diff options
| author | Daniel J. Ramirez <djrmuv@gmail.com> | 2017-08-18 21:21:24 -0500 |
|---|---|---|
| committer | Daniel J. Ramirez <djrmuv@gmail.com> | 2017-08-20 13:53:02 -0500 |
| commit | da8fecf25e11ea05ad6aaab4f9676c78e4faecdc (patch) | |
| tree | f56d429c0bca3b6bfd214e4cbc1a8c481691b43e | |
| parent | ab13d0aeed43b7263b1e62bb62551525b70822a8 (diff) | |
Added support for SVG
26 files changed, 4710 insertions, 26 deletions
diff --git a/core/io/image_loader.cpp b/core/io/image_loader.cpp index 23719940be..7b5b4a13ea 100644 --- a/core/io/image_loader.cpp +++ b/core/io/image_loader.cpp @@ -43,7 +43,7 @@ bool ImageFormatLoader::recognize(const String &p_extension) const { return false; } -Error ImageLoader::load_image(String p_file, Ref<Image> p_image, FileAccess *p_custom, bool p_force_linear) { +Error ImageLoader::load_image(String p_file, Ref<Image> p_image, FileAccess *p_custom, bool p_force_linear, float p_scale) { ERR_FAIL_COND_V(p_image.is_null(), ERR_INVALID_PARAMETER); FileAccess *f = p_custom; @@ -62,7 +62,7 @@ Error ImageLoader::load_image(String p_file, Ref<Image> p_image, FileAccess *p_c if (!loader[i]->recognize(extension)) continue; - Error err = loader[i]->load_image(p_image, f, p_force_linear); + Error err = loader[i]->load_image(p_image, f, p_force_linear, p_scale); if (err != ERR_FILE_UNRECOGNIZED) { diff --git a/core/io/image_loader.h b/core/io/image_loader.h index e528d1423b..f79d9789bf 100644 --- a/core/io/image_loader.h +++ b/core/io/image_loader.h @@ -56,7 +56,7 @@ class ImageFormatLoader { friend class ImageLoader; protected: - virtual Error load_image(Ref<Image> p_image, FileAccess *p_fileaccess, bool p_force_linear) = 0; + virtual Error load_image(Ref<Image> p_image, FileAccess *p_fileaccess, bool p_force_linear, float p_scale) = 0; virtual void get_recognized_extensions(List<String> *p_extensions) const = 0; bool recognize(const String &p_extension) const; @@ -75,7 +75,7 @@ class ImageLoader { protected: public: - static Error load_image(String p_file, Ref<Image> p_image, FileAccess *p_custom = NULL, bool p_force_linear = false); + static Error load_image(String p_file, Ref<Image> p_image, FileAccess *p_custom = NULL, bool p_force_linear = false, float p_scale = 1.0); static void get_recognized_extensions(List<String> *p_extensions); static bool recognize(const String &p_extension); diff --git a/drivers/png/image_loader_png.cpp b/drivers/png/image_loader_png.cpp index 33d271248c..30ec8cd036 100644 --- a/drivers/png/image_loader_png.cpp +++ b/drivers/png/image_loader_png.cpp @@ -201,7 +201,7 @@ Error ImageLoaderPNG::_load_image(void *rf_up, png_rw_ptr p_func, Ref<Image> p_i return OK; } -Error ImageLoaderPNG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear) { +Error ImageLoaderPNG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { Error err = _load_image(f, _read_png_data, p_image); f->close(); diff --git a/drivers/png/image_loader_png.h b/drivers/png/image_loader_png.h index f0a525a9eb..c11e25e1a4 100644 --- a/drivers/png/image_loader_png.h +++ b/drivers/png/image_loader_png.h @@ -43,7 +43,7 @@ class ImageLoaderPNG : public ImageFormatLoader { public: static Error _load_image(void *rf_up, png_rw_ptr p_func, Ref<Image> p_image); - virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear); + virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale); virtual void get_recognized_extensions(List<String> *p_extensions) const; ImageLoaderPNG(); }; diff --git a/editor/import/resource_importer_texture.cpp b/editor/import/resource_importer_texture.cpp index c0c507c2d6..060e683077 100644 --- a/editor/import/resource_importer_texture.cpp +++ b/editor/import/resource_importer_texture.cpp @@ -45,8 +45,6 @@ void ResourceImporterTexture::_texture_reimport_srgb(const Ref<StreamTexture> &p singleton->make_flags[path] |= MAKE_SRGB_FLAG; - print_line("requesting srgb for " + String(path)); - singleton->mutex->unlock(); } @@ -61,8 +59,6 @@ void ResourceImporterTexture::_texture_reimport_3d(const Ref<StreamTexture> &p_t singleton->make_flags[path] |= MAKE_3D_FLAG; - print_line("requesting 3d for " + String(path)); - singleton->mutex->unlock(); } @@ -77,8 +73,6 @@ void ResourceImporterTexture::_texture_reimport_normal(const Ref<StreamTexture> singleton->make_flags[path] |= MAKE_NORMAL_FLAG; - print_line("requesting normalfor " + String(path)); - singleton->mutex->unlock(); } @@ -97,8 +91,6 @@ void ResourceImporterTexture::update_imports() { Vector<String> to_reimport; for (Map<StringName, int>::Element *E = make_flags.front(); E; E = E->next()) { - print_line("checking for reimport " + String(E->key())); - Ref<ConfigFile> cf; cf.instance(); String src_path = String(E->key()) + ".import"; @@ -207,11 +199,11 @@ void ResourceImporterTexture::get_import_options(List<ImportOption> *r_options, r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "stream"), false)); r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "size_limit", PROPERTY_HINT_RANGE, "0,4096,1"), 0)); r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "detect_3d"), p_preset == PRESET_DETECT)); + r_options->push_back(ImportOption(PropertyInfo(Variant::REAL, "scale", PROPERTY_HINT_RANGE, "0.001,100,0.1"), 1.0)); } void ResourceImporterTexture::_save_stex(const Ref<Image> &p_image, const String &p_to_path, int p_compress_mode, float p_lossy_quality, Image::CompressMode p_vram_compression, bool p_mipmaps, int p_texture_flags, bool p_streamable, bool p_detect_3d, bool p_detect_srgb, bool p_force_rgbe, bool p_detect_normal, bool p_force_normal) { - print_line("saving: " + p_to_path); FileAccess *f = FileAccess::open(p_to_path, FileAccess::WRITE); f->store_8('G'); f->store_8('D'); @@ -365,10 +357,11 @@ Error ResourceImporterTexture::import(const String &p_source_file, const String bool force_rgbe = int(p_options["compress/hdr_mode"]) == 1; bool hdr_as_srgb = p_options["process/HDR_as_SRGB"]; int normal = p_options["compress/normal_map"]; + float scale = p_options["scale"]; Ref<Image> image; image.instance(); - Error err = ImageLoader::load_image(p_source_file, image, NULL, hdr_as_srgb); + Error err = ImageLoader::load_image(p_source_file, image, NULL, hdr_as_srgb, scale); if (err != OK) return err; diff --git a/modules/hdr/image_loader_hdr.cpp b/modules/hdr/image_loader_hdr.cpp index 19df27b962..a3f0601043 100644 --- a/modules/hdr/image_loader_hdr.cpp +++ b/modules/hdr/image_loader_hdr.cpp @@ -34,7 +34,7 @@ #include "thirdparty/tinyexr/tinyexr.h" -Error ImageLoaderHDR::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear) { +Error ImageLoaderHDR::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { String header = f->get_token(); diff --git a/modules/hdr/image_loader_hdr.h b/modules/hdr/image_loader_hdr.h index 127833ebd0..1e08e954e1 100644 --- a/modules/hdr/image_loader_hdr.h +++ b/modules/hdr/image_loader_hdr.h @@ -38,7 +38,7 @@ class ImageLoaderHDR : public ImageFormatLoader { public: - virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear); + virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale); virtual void get_recognized_extensions(List<String> *p_extensions) const; ImageLoaderHDR(); }; diff --git a/modules/jpg/image_loader_jpegd.cpp b/modules/jpg/image_loader_jpegd.cpp index 8c73b69f1b..4f38e83274 100644 --- a/modules/jpg/image_loader_jpegd.cpp +++ b/modules/jpg/image_loader_jpegd.cpp @@ -89,7 +89,7 @@ Error jpeg_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p return OK; } -Error ImageLoaderJPG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear) { +Error ImageLoaderJPG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { PoolVector<uint8_t> src_image; int src_image_len = f->get_len(); diff --git a/modules/jpg/image_loader_jpegd.h b/modules/jpg/image_loader_jpegd.h index aa073b493d..917c0e1d95 100644 --- a/modules/jpg/image_loader_jpegd.h +++ b/modules/jpg/image_loader_jpegd.h @@ -38,7 +38,7 @@ class ImageLoaderJPG : public ImageFormatLoader { public: - virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear); + virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale); virtual void get_recognized_extensions(List<String> *p_extensions) const; ImageLoaderJPG(); }; diff --git a/modules/svg/SCsub b/modules/svg/SCsub new file mode 100644 index 0000000000..0d3a347b7e --- /dev/null +++ b/modules/svg/SCsub @@ -0,0 +1,34 @@ +#!/usr/bin/env python + +Import('env') + +# Thirdparty source files +thirdparty_dir = "#thirdparty/nanosvg/src/" +thirdparty_sources = [ + "nanosvg.cc" +] +thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources] + +# env.add_source_files(env.modules_sources, thirdparty_sources) + +lib = env.Library("svg_builtin", thirdparty_sources) +# Needs to be appended to arrive after libscene in the linker call, +# but we don't want it to arrive *after* system libs, so manual hack +# LIBS contains first SCons Library objects ("SCons.Node.FS.File object") +# and then plain strings for system library. We insert between the two. +inserted = False +for idx, linklib in enumerate(env["LIBS"]): + if isinstance(linklib, basestring): # first system lib such as "X11", otherwise SCons lib object + env["LIBS"].insert(idx, lib) + inserted = True + break +if not inserted: + env.Append(LIBS=[lib]) + +env.Append(CPPPATH=[thirdparty_dir]) +env.Append(CCFLAGS=["-DSVG_ENABLED"]) + +# Godot's own source files +env.add_source_files(env.modules_sources, "*.cpp") + +Export('env')
\ No newline at end of file diff --git a/modules/svg/config.py b/modules/svg/config.py new file mode 100644 index 0000000000..fb920482f5 --- /dev/null +++ b/modules/svg/config.py @@ -0,0 +1,7 @@ + +def can_build(platform): + return True + + +def configure(env): + pass diff --git a/modules/svg/image_loader_svg.cpp b/modules/svg/image_loader_svg.cpp new file mode 100644 index 0000000000..cc801775b8 --- /dev/null +++ b/modules/svg/image_loader_svg.cpp @@ -0,0 +1,107 @@ +/*************************************************************************/ +/* image_loader_svg.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#include "image_loader_svg.h" + +#include "os/os.h" +#include "print_string.h" + +#include <ustring.h> + +void SVGRasterizer::rasterize(NSVGimage *p_image, float p_tx, float p_ty, float p_scale, unsigned char *p_dst, int p_w, int p_h, int p_stride) { + nsvgRasterize(rasterizer, p_image, p_tx, p_ty, p_scale, p_dst, p_w, p_h, p_stride); +} + +SVGRasterizer::SVGRasterizer() { + rasterizer = nsvgCreateRasterizer(); +} +SVGRasterizer::~SVGRasterizer() { + nsvgDeleteRasterizer(rasterizer); +} + +SVGRasterizer ImageLoaderSVG::rasterizer; + +Error ImageLoaderSVG::_create_image(Ref<Image> p_image, const PoolVector<uint8_t> *p_data, float p_scale) { + NSVGimage *svg_image; + PoolVector<uint8_t>::Read src_r = p_data->read(); + svg_image = nsvgParse((char *)src_r.ptr(), "px", 96); + if (svg_image == NULL) { + ERR_PRINT("SVG Corrupted"); + return ERR_FILE_CORRUPT; + } + int w = (int)(svg_image->width * p_scale); + int h = (int)(svg_image->height * p_scale); + + PoolVector<uint8_t> dst_image; + dst_image.resize(w * h * 4); + + PoolVector<uint8_t>::Write dw = dst_image.write(); + + rasterizer.rasterize(svg_image, 0, 0, p_scale, (unsigned char *)dw.ptr(), w, h, w * 4); + + dw = PoolVector<uint8_t>::Write(); + p_image->create(w, h, false, Image::FORMAT_RGBA8, dst_image); + if (upsample) + p_image->shrink_x2(); + + nsvgDelete(svg_image); + + return OK; +} + +Error ImageLoaderSVG::create_image_from_string(Ref<Image> p_image, const char *svg_str, float p_scale) { + + size_t str_len = strlen(svg_str); + PoolVector<uint8_t> src_data; + src_data.resize(str_len); + PoolVector<uint8_t>::Write src_w = src_data.write(); + memcpy(src_w.ptr(), svg_str, str_len); + + return _create_image(p_image, &src_data, p_scale); +} + +Error ImageLoaderSVG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { + + uint32_t size = f->get_len(); + PoolVector<uint8_t> src_image; + src_image.resize(size); + PoolVector<uint8_t>::Write src_w = src_image.write(); + f->get_buffer(src_w.ptr(), size); + + return _create_image(p_image, &src_image, p_scale); +} + +void ImageLoaderSVG::get_recognized_extensions(List<String> *p_extensions) const { + + p_extensions->push_back("svg"); + p_extensions->push_back("svgz"); +} + +ImageLoaderSVG::ImageLoaderSVG() { +} diff --git a/modules/svg/image_loader_svg.h b/modules/svg/image_loader_svg.h new file mode 100644 index 0000000000..2b6a59edc8 --- /dev/null +++ b/modules/svg/image_loader_svg.h @@ -0,0 +1,67 @@ +/*************************************************************************/ +/* image_loader_svg.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#ifndef IMAGE_LOADER_SVG_H +#define IMAGE_LOADER_SVG_H + +#include "io/image_loader.h" +#include "ustring.h" + +#include <nanosvg.h> +#include <nanosvgrast.h> + +/** + @author Daniel Ramirez <djrmuv@gmail.com> +*/ + +class SVGRasterizer { + + NSVGrasterizer *rasterizer; + +public: + void rasterize(NSVGimage *p_image, float p_tx, float p_ty, float p_scale, unsigned char *p_dst, int p_w, int p_h, int p_stride); + + SVGRasterizer(); + ~SVGRasterizer(); +}; + +class ImageLoaderSVG : public ImageFormatLoader { + + static SVGRasterizer rasterizer; + static Error _create_image(Ref<Image> p_image, const PoolVector<uint8_t> *p_data, float p_scale); + +public: + static Error create_image_from_string(Ref<Image> p_image, const char *p_svg_str, float p_scale); + + virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale); + virtual void get_recognized_extensions(List<String> *p_extensions) const; + ImageLoaderSVG(); +}; + +#endif
\ No newline at end of file diff --git a/modules/svg/register_types.cpp b/modules/svg/register_types.cpp new file mode 100644 index 0000000000..e0f967ca06 --- /dev/null +++ b/modules/svg/register_types.cpp @@ -0,0 +1,45 @@ +/*************************************************************************/ +/* register_types.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#include "register_types.h" + +#include "image_loader_svg.h" + +static ImageLoaderSVG *image_loader_svg = NULL; + +void register_svg_types() { + + image_loader_svg = memnew(ImageLoaderSVG); + ImageLoader::add_image_format_loader(image_loader_svg); +} + +void unregister_svg_types() { + + memdelete(image_loader_svg); +} diff --git a/modules/svg/register_types.h b/modules/svg/register_types.h new file mode 100644 index 0000000000..920b724623 --- /dev/null +++ b/modules/svg/register_types.h @@ -0,0 +1,31 @@ +/*************************************************************************/ +/* register_types.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +void register_svg_types(); +void unregister_svg_types(); diff --git a/modules/tga/image_loader_tga.cpp b/modules/tga/image_loader_tga.cpp index 5b8610b975..2329d0bcc2 100644 --- a/modules/tga/image_loader_tga.cpp +++ b/modules/tga/image_loader_tga.cpp @@ -203,7 +203,7 @@ Error ImageLoaderTGA::convert_to_image(Ref<Image> p_image, const uint8_t *p_buff return OK; } -Error ImageLoaderTGA::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear) { +Error ImageLoaderTGA::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { PoolVector<uint8_t> src_image; int src_image_len = f->get_len(); diff --git a/modules/tga/image_loader_tga.h b/modules/tga/image_loader_tga.h index 11329ec68a..f42a3f7e75 100644 --- a/modules/tga/image_loader_tga.h +++ b/modules/tga/image_loader_tga.h @@ -75,7 +75,7 @@ class ImageLoaderTGA : public ImageFormatLoader { static Error convert_to_image(Ref<Image> p_image, const uint8_t *p_buffer, const tga_header_s &p_header, const uint8_t *p_palette, const bool p_is_monochrome); public: - virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear); + virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale); virtual void get_recognized_extensions(List<String> *p_extensions) const; ImageLoaderTGA(); }; diff --git a/modules/tinyexr/image_loader_tinyexr.cpp b/modules/tinyexr/image_loader_tinyexr.cpp index 4eb91da10b..18d453a717 100644 --- a/modules/tinyexr/image_loader_tinyexr.cpp +++ b/modules/tinyexr/image_loader_tinyexr.cpp @@ -34,7 +34,7 @@ #include "thirdparty/tinyexr/tinyexr.h" -Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear) { +Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { PoolVector<uint8_t> src_image; int src_image_len = f->get_len(); diff --git a/modules/tinyexr/image_loader_tinyexr.h b/modules/tinyexr/image_loader_tinyexr.h index a52894b12b..f9636a303e 100644 --- a/modules/tinyexr/image_loader_tinyexr.h +++ b/modules/tinyexr/image_loader_tinyexr.h @@ -38,7 +38,7 @@ class ImageLoaderTinyEXR : public ImageFormatLoader { public: - virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear); + virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale); virtual void get_recognized_extensions(List<String> *p_extensions) const; ImageLoaderTinyEXR(); }; diff --git a/modules/webp/image_loader_webp.cpp b/modules/webp/image_loader_webp.cpp index 87c2e811b3..4ffcdefbe9 100644 --- a/modules/webp/image_loader_webp.cpp +++ b/modules/webp/image_loader_webp.cpp @@ -115,7 +115,7 @@ static Ref<Image> _webp_lossy_unpack(const PoolVector<uint8_t> &p_buffer) { return img; } -Error ImageLoaderWEBP::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear) { +Error ImageLoaderWEBP::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) { uint32_t size = f->get_len(); PoolVector<uint8_t> src_image; diff --git a/modules/webp/image_loader_webp.h b/modules/webp/image_loader_webp.h index 1ac2196a71..b8c5933512 100644 --- a/modules/webp/image_loader_webp.h +++ b/modules/webp/image_loader_webp.h @@ -38,7 +38,7 @@ class ImageLoaderWEBP : public ImageFormatLoader { public: - virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear); + virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale); virtual void get_recognized_extensions(List<String> *p_extensions) const; ImageLoaderWEBP(); }; diff --git a/thirdparty/nanosvg/LICENSE.txt b/thirdparty/nanosvg/LICENSE.txt new file mode 100644 index 0000000000..6fde401cb2 --- /dev/null +++ b/thirdparty/nanosvg/LICENSE.txt @@ -0,0 +1,18 @@ +Copyright (c) 2013-14 Mikko Mononen memon@inside.org
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+claim that you wrote the original software. If you use this software
+in a product, an acknowledgment in the product documentation would be
+appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+
diff --git a/thirdparty/nanosvg/README.md b/thirdparty/nanosvg/README.md new file mode 100644 index 0000000000..919a1ec5e8 --- /dev/null +++ b/thirdparty/nanosvg/README.md @@ -0,0 +1,2 @@ +See: +https://github.com/memononen/nanosvg diff --git a/thirdparty/nanosvg/src/nanosvg.cc b/thirdparty/nanosvg/src/nanosvg.cc new file mode 100644 index 0000000000..3e8e86c792 --- /dev/null +++ b/thirdparty/nanosvg/src/nanosvg.cc @@ -0,0 +1,8 @@ +#include "stdio.h" +#include "string.h" +#include "math.h" +#define NANOSVG_ALL_COLOR_KEYWORDS +#define NANOSVG_IMPLEMENTATION +#include "nanosvg.h" +#define NANOSVGRAST_IMPLEMENTATION +#include "nanosvgrast.h" diff --git a/thirdparty/nanosvg/src/nanosvg.h b/thirdparty/nanosvg/src/nanosvg.h new file mode 100644 index 0000000000..2321c56fd2 --- /dev/null +++ b/thirdparty/nanosvg/src/nanosvg.h @@ -0,0 +1,2925 @@ +/* + * Copyright (c) 2013-14 Mikko Mononen memon@inside.org + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * The SVG parser is based on Anti-Grain Geometry 2.4 SVG example + * Copyright (C) 2002-2004 Maxim Shemanarev (McSeem) (http://www.antigrain.com/) + * + * Arc calculation code based on canvg (https://code.google.com/p/canvg/) + * + * Bounding box calculation based on http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html + * + */ + +#ifndef NANOSVG_H +#define NANOSVG_H + +#ifdef __cplusplus +extern "C" { +#endif + +// NanoSVG is a simple stupid single-header-file SVG parse. The output of the parser is a list of cubic bezier shapes. +// +// The library suits well for anything from rendering scalable icons in your editor application to prototyping a game. +// +// NanoSVG supports a wide range of SVG features, but something may be missing, feel free to create a pull request! +// +// The shapes in the SVG images are transformed by the viewBox and converted to specified units. +// That is, you should get the same looking data as your designed in your favorite app. +// +// NanoSVG can return the paths in few different units. For example if you want to render an image, you may choose +// to get the paths in pixels, or if you are feeding the data into a CNC-cutter, you may want to use millimeters. +// +// The units passed to NanoVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'. +// DPI (dots-per-inch) controls how the unit conversion is done. +// +// If you don't know or care about the units stuff, "px" and 96 should get you going. + + +/* Example Usage: + // Load + NSVGImage* image; + image = nsvgParseFromFile("test.svg", "px", 96); + printf("size: %f x %f\n", image->width, image->height); + // Use... + for (NSVGshape *shape = image->shapes; shape != NULL; shape = shape->next) { + for (NSVGpath *path = shape->paths; path != NULL; path = path->next) { + for (int i = 0; i < path->npts-1; i += 3) { + float* p = &path->pts[i*2]; + drawCubicBez(p[0],p[1], p[2],p[3], p[4],p[5], p[6],p[7]); + } + } + } + // Delete + nsvgDelete(image); +*/ + +enum NSVGpaintType { + NSVG_PAINT_NONE = 0, + NSVG_PAINT_COLOR = 1, + NSVG_PAINT_LINEAR_GRADIENT = 2, + NSVG_PAINT_RADIAL_GRADIENT = 3 +}; + +enum NSVGspreadType { + NSVG_SPREAD_PAD = 0, + NSVG_SPREAD_REFLECT = 1, + NSVG_SPREAD_REPEAT = 2 +}; + +enum NSVGlineJoin { + NSVG_JOIN_MITER = 0, + NSVG_JOIN_ROUND = 1, + NSVG_JOIN_BEVEL = 2 +}; + +enum NSVGlineCap { + NSVG_CAP_BUTT = 0, + NSVG_CAP_ROUND = 1, + NSVG_CAP_SQUARE = 2 +}; + +enum NSVGfillRule { + NSVG_FILLRULE_NONZERO = 0, + NSVG_FILLRULE_EVENODD = 1 +}; + +enum NSVGflags { + NSVG_FLAGS_VISIBLE = 0x01 +}; + +typedef struct NSVGgradientStop { + unsigned int color; + float offset; +} NSVGgradientStop; + +typedef struct NSVGgradient { + float xform[6]; + char spread; + float fx, fy; + int nstops; + NSVGgradientStop stops[1]; +} NSVGgradient; + +typedef struct NSVGpaint { + char type; + union { + unsigned int color; + NSVGgradient* gradient; + }; +} NSVGpaint; + +typedef struct NSVGpath +{ + float* pts; // Cubic bezier points: x0,y0, [cpx1,cpx1,cpx2,cpy2,x1,y1], ... + int npts; // Total number of bezier points. + char closed; // Flag indicating if shapes should be treated as closed. + float bounds[4]; // Tight bounding box of the shape [minx,miny,maxx,maxy]. + struct NSVGpath* next; // Pointer to next path, or NULL if last element. +} NSVGpath; + +typedef struct NSVGshape +{ + char id[64]; // Optional 'id' attr of the shape or its group + NSVGpaint fill; // Fill paint + NSVGpaint stroke; // Stroke paint + float opacity; // Opacity of the shape. + float strokeWidth; // Stroke width (scaled). + float strokeDashOffset; // Stroke dash offset (scaled). + float strokeDashArray[8]; // Stroke dash array (scaled). + char strokeDashCount; // Number of dash values in dash array. + char strokeLineJoin; // Stroke join type. + char strokeLineCap; // Stroke cap type. + float miterLimit; // Miter limit + char fillRule; // Fill rule, see NSVGfillRule. + unsigned char flags; // Logical or of NSVG_FLAGS_* flags + float bounds[4]; // Tight bounding box of the shape [minx,miny,maxx,maxy]. + NSVGpath* paths; // Linked list of paths in the image. + struct NSVGshape* next; // Pointer to next shape, or NULL if last element. +} NSVGshape; + +typedef struct NSVGimage +{ + float width; // Width of the image. + float height; // Height of the image. + NSVGshape* shapes; // Linked list of shapes in the image. +} NSVGimage; + +// Parses SVG file from a file, returns SVG image as paths. +NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi); + +// Parses SVG file from a null terminated string, returns SVG image as paths. +// Important note: changes the string. +NSVGimage* nsvgParse(char* input, const char* units, float dpi); + +// Deletes list of paths. +void nsvgDelete(NSVGimage* image); + +#ifdef __cplusplus +} +#endif + +#endif // NANOSVG_H + +#ifdef NANOSVG_IMPLEMENTATION + +#include <string.h> +#include <stdlib.h> +#include <math.h> + +#define NSVG_PI (3.14159265358979323846264338327f) +#define NSVG_KAPPA90 (0.5522847493f) // Length proportional to radius of a cubic bezier handle for 90deg arcs. + +#define NSVG_ALIGN_MIN 0 +#define NSVG_ALIGN_MID 1 +#define NSVG_ALIGN_MAX 2 +#define NSVG_ALIGN_NONE 0 +#define NSVG_ALIGN_MEET 1 +#define NSVG_ALIGN_SLICE 2 + +#define NSVG_NOTUSED(v) do { (void)(1 ? (void)0 : ( (void)(v) ) ); } while(0) +#define NSVG_RGB(r, g, b) (((unsigned int)r) | ((unsigned int)g << 8) | ((unsigned int)b << 16)) + +#ifdef _MSC_VER + #pragma warning (disable: 4996) // Switch off security warnings + #pragma warning (disable: 4100) // Switch off unreferenced formal parameter warnings + #ifdef __cplusplus + #define NSVG_INLINE inline + #else + #define NSVG_INLINE + #endif +#else + #define NSVG_INLINE inline +#endif + + +static int nsvg__isspace(char c) +{ + return strchr(" \t\n\v\f\r", c) != 0; +} + +static int nsvg__isdigit(char c) +{ + return c >= '0' && c <= '9'; +} + +static int nsvg__isnum(char c) +{ + return strchr("0123456789+-.eE", c) != 0; +} + +static NSVG_INLINE float nsvg__minf(float a, float b) { return a < b ? a : b; } +static NSVG_INLINE float nsvg__maxf(float a, float b) { return a > b ? a : b; } + + +// Simple XML parser + +#define NSVG_XML_TAG 1 +#define NSVG_XML_CONTENT 2 +#define NSVG_XML_MAX_ATTRIBS 256 + +static void nsvg__parseContent(char* s, + void (*contentCb)(void* ud, const char* s), + void* ud) +{ + // Trim start white spaces + while (*s && nsvg__isspace(*s)) s++; + if (!*s) return; + + if (contentCb) + (*contentCb)(ud, s); +} + +static void nsvg__parseElement(char* s, + void (*startelCb)(void* ud, const char* el, const char** attr), + void (*endelCb)(void* ud, const char* el), + void* ud) +{ + const char* attr[NSVG_XML_MAX_ATTRIBS]; + int nattr = 0; + char* name; + int start = 0; + int end = 0; + char quote; + + // Skip white space after the '<' + while (*s && nsvg__isspace(*s)) s++; + + // Check if the tag is end tag + if (*s == '/') { + s++; + end = 1; + } else { + start = 1; + } + + // Skip comments, data and preprocessor stuff. + if (!*s || *s == '?' || *s == '!') + return; + + // Get tag name + name = s; + while (*s && !nsvg__isspace(*s)) s++; + if (*s) { *s++ = '\0'; } + + // Get attribs + while (!end && *s && nattr < NSVG_XML_MAX_ATTRIBS-3) { + char* name = NULL; + char* value = NULL; + + // Skip white space before the attrib name + while (*s && nsvg__isspace(*s)) s++; + if (!*s) break; + if (*s == '/') { + end = 1; + break; + } + name = s; + // Find end of the attrib name. + while (*s && !nsvg__isspace(*s) && *s != '=') s++; + if (*s) { *s++ = '\0'; } + // Skip until the beginning of the value. + while (*s && *s != '\"' && *s != '\'') s++; + if (!*s) break; + quote = *s; + s++; + // Store value and find the end of it. + value = s; + while (*s && *s != quote) s++; + if (*s) { *s++ = '\0'; } + + // Store only well formed attributes + if (name && value) { + attr[nattr++] = name; + attr[nattr++] = value; + } + } + + // List terminator + attr[nattr++] = 0; + attr[nattr++] = 0; + + // Call callbacks. + if (start && startelCb) + (*startelCb)(ud, name, attr); + if (end && endelCb) + (*endelCb)(ud, name); +} + +int nsvg__parseXML(char* input, + void (*startelCb)(void* ud, const char* el, const char** attr), + void (*endelCb)(void* ud, const char* el), + void (*contentCb)(void* ud, const char* s), + void* ud) +{ + char* s = input; + char* mark = s; + int state = NSVG_XML_CONTENT; + while (*s) { + if (*s == '<' && state == NSVG_XML_CONTENT) { + // Start of a tag + *s++ = '\0'; + nsvg__parseContent(mark, contentCb, ud); + mark = s; + state = NSVG_XML_TAG; + } else if (*s == '>' && state == NSVG_XML_TAG) { + // Start of a content or new tag. + *s++ = '\0'; + nsvg__parseElement(mark, startelCb, endelCb, ud); + mark = s; + state = NSVG_XML_CONTENT; + } else { + s++; + } + } + + return 1; +} + + +/* Simple SVG parser. */ + +#define NSVG_MAX_ATTR 128 + +enum NSVGgradientUnits { + NSVG_USER_SPACE = 0, + NSVG_OBJECT_SPACE = 1 +}; + +#define NSVG_MAX_DASHES 8 + +enum NSVGunits { + NSVG_UNITS_USER, + NSVG_UNITS_PX, + NSVG_UNITS_PT, + NSVG_UNITS_PC, + NSVG_UNITS_MM, + NSVG_UNITS_CM, + NSVG_UNITS_IN, + NSVG_UNITS_PERCENT, + NSVG_UNITS_EM, + NSVG_UNITS_EX +}; + +typedef struct NSVGcoordinate { + float value; + int units; +} NSVGcoordinate; + +typedef struct NSVGlinearData { + NSVGcoordinate x1, y1, x2, y2; +} NSVGlinearData; + +typedef struct NSVGradialData { + NSVGcoordinate cx, cy, r, fx, fy; +} NSVGradialData; + +typedef struct NSVGgradientData +{ + char id[64]; + char ref[64]; + char type; + union { + NSVGlinearData linear; + NSVGradialData radial; + }; + char spread; + char units; + float xform[6]; + int nstops; + NSVGgradientStop* stops; + struct NSVGgradientData* next; +} NSVGgradientData; + +typedef struct NSVGattrib +{ + char id[64]; + float xform[6]; + unsigned int fillColor; + unsigned int strokeColor; + float opacity; + float fillOpacity; + float strokeOpacity; + char fillGradient[64]; + char strokeGradient[64]; + float strokeWidth; + float strokeDashOffset; + float strokeDashArray[NSVG_MAX_DASHES]; + int strokeDashCount; + char strokeLineJoin; + char strokeLineCap; + float miterLimit; + char fillRule; + float fontSize; + unsigned int stopColor; + float stopOpacity; + float stopOffset; + char hasFill; + char hasStroke; + char visible; +} NSVGattrib; + +typedef struct NSVGparser +{ + NSVGattrib attr[NSVG_MAX_ATTR]; + int attrHead; + float* pts; + int npts; + int cpts; + NSVGpath* plist; + NSVGimage* image; + NSVGgradientData* gradients; + NSVGshape* shapesTail; + float viewMinx, viewMiny, viewWidth, viewHeight; + int alignX, alignY, alignType; + float dpi; + char pathFlag; + char defsFlag; +} NSVGparser; + +static void nsvg__xformIdentity(float* t) +{ + t[0] = 1.0f; t[1] = 0.0f; + t[2] = 0.0f; t[3] = 1.0f; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetTranslation(float* t, float tx, float ty) +{ + t[0] = 1.0f; t[1] = 0.0f; + t[2] = 0.0f; t[3] = 1.0f; + t[4] = tx; t[5] = ty; +} + +static void nsvg__xformSetScale(float* t, float sx, float sy) +{ + t[0] = sx; t[1] = 0.0f; + t[2] = 0.0f; t[3] = sy; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetSkewX(float* t, float a) +{ + t[0] = 1.0f; t[1] = 0.0f; + t[2] = tanf(a); t[3] = 1.0f; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetSkewY(float* t, float a) +{ + t[0] = 1.0f; t[1] = tanf(a); + t[2] = 0.0f; t[3] = 1.0f; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetRotation(float* t, float a) +{ + float cs = cosf(a), sn = sinf(a); + t[0] = cs; t[1] = sn; + t[2] = -sn; t[3] = cs; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformMultiply(float* t, float* s) +{ + float t0 = t[0] * s[0] + t[1] * s[2]; + float t2 = t[2] * s[0] + t[3] * s[2]; + float t4 = t[4] * s[0] + t[5] * s[2] + s[4]; + t[1] = t[0] * s[1] + t[1] * s[3]; + t[3] = t[2] * s[1] + t[3] * s[3]; + t[5] = t[4] * s[1] + t[5] * s[3] + s[5]; + t[0] = t0; + t[2] = t2; + t[4] = t4; +} + +static void nsvg__xformInverse(float* inv, float* t) +{ + double invdet, det = (double)t[0] * t[3] - (double)t[2] * t[1]; + if (det > -1e-6 && det < 1e-6) { + nsvg__xformIdentity(t); + return; + } + invdet = 1.0 / det; + inv[0] = (float)(t[3] * invdet); + inv[2] = (float)(-t[2] * invdet); + inv[4] = (float)(((double)t[2] * t[5] - (double)t[3] * t[4]) * invdet); + inv[1] = (float)(-t[1] * invdet); + inv[3] = (float)(t[0] * invdet); + inv[5] = (float)(((double)t[1] * t[4] - (double)t[0] * t[5]) * invdet); +} + +static void nsvg__xformPremultiply(float* t, float* s) +{ + float s2[6]; + memcpy(s2, s, sizeof(float)*6); + nsvg__xformMultiply(s2, t); + memcpy(t, s2, sizeof(float)*6); +} + +static void nsvg__xformPoint(float* dx, float* dy, float x, float y, float* t) +{ + *dx = x*t[0] + y*t[2] + t[4]; + *dy = x*t[1] + y*t[3] + t[5]; +} + +static void nsvg__xformVec(float* dx, float* dy, float x, float y, float* t) +{ + *dx = x*t[0] + y*t[2]; + *dy = x*t[1] + y*t[3]; +} + +#define NSVG_EPSILON (1e-12) + +static int nsvg__ptInBounds(float* pt, float* bounds) +{ + return pt[0] >= bounds[0] && pt[0] <= bounds[2] && pt[1] >= bounds[1] && pt[1] <= bounds[3]; +} + + +static double nsvg__evalBezier(double t, double p0, double p1, double p2, double p3) +{ + double it = 1.0-t; + return it*it*it*p0 + 3.0*it*it*t*p1 + 3.0*it*t*t*p2 + t*t*t*p3; +} + +static void nsvg__curveBounds(float* bounds, float* curve) +{ + int i, j, count; + double roots[2], a, b, c, b2ac, t, v; + float* v0 = &curve[0]; + float* v1 = &curve[2]; + float* v2 = &curve[4]; + float* v3 = &curve[6]; + + // Start the bounding box by end points + bounds[0] = nsvg__minf(v0[0], v3[0]); + bounds[1] = nsvg__minf(v0[1], v3[1]); + bounds[2] = nsvg__maxf(v0[0], v3[0]); + bounds[3] = nsvg__maxf(v0[1], v3[1]); + + // Bezier curve fits inside the convex hull of it's control points. + // If control points are inside the bounds, we're done. + if (nsvg__ptInBounds(v1, bounds) && nsvg__ptInBounds(v2, bounds)) + return; + + // Add bezier curve inflection points in X and Y. + for (i = 0; i < 2; i++) { + a = -3.0 * v0[i] + 9.0 * v1[i] - 9.0 * v2[i] + 3.0 * v3[i]; + b = 6.0 * v0[i] - 12.0 * v1[i] + 6.0 * v2[i]; + c = 3.0 * v1[i] - 3.0 * v0[i]; + count = 0; + if (fabs(a) < NSVG_EPSILON) { + if (fabs(b) > NSVG_EPSILON) { + t = -c / b; + if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON) + roots[count++] = t; + } + } else { + b2ac = b*b - 4.0*c*a; + if (b2ac > NSVG_EPSILON) { + t = (-b + sqrt(b2ac)) / (2.0 * a); + if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON) + roots[count++] = t; + t = (-b - sqrt(b2ac)) / (2.0 * a); + if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON) + roots[count++] = t; + } + } + for (j = 0; j < count; j++) { + v = nsvg__evalBezier(roots[j], v0[i], v1[i], v2[i], v3[i]); + bounds[0+i] = nsvg__minf(bounds[0+i], (float)v); + bounds[2+i] = nsvg__maxf(bounds[2+i], (float)v); + } + } +} + +static NSVGparser* nsvg__createParser() +{ + NSVGparser* p; + p = (NSVGparser*)malloc(sizeof(NSVGparser)); + if (p == NULL) goto error; + memset(p, 0, sizeof(NSVGparser)); + + p->image = (NSVGimage*)malloc(sizeof(NSVGimage)); + if (p->image == NULL) goto error; + memset(p->image, 0, sizeof(NSVGimage)); + + // Init style + nsvg__xformIdentity(p->attr[0].xform); + memset(p->attr[0].id, 0, sizeof p->attr[0].id); + p->attr[0].fillColor = NSVG_RGB(0,0,0); + p->attr[0].strokeColor = NSVG_RGB(0,0,0); + p->attr[0].opacity = 1; + p->attr[0].fillOpacity = 1; + p->attr[0].strokeOpacity = 1; + p->attr[0].stopOpacity = 1; + p->attr[0].strokeWidth = 1; + p->attr[0].strokeLineJoin = NSVG_JOIN_MITER; + p->attr[0].strokeLineCap = NSVG_CAP_BUTT; + p->attr[0].miterLimit = 4; + p->attr[0].fillRule = NSVG_FILLRULE_NONZERO; + p->attr[0].hasFill = 1; + p->attr[0].visible = 1; + + return p; + +error: + if (p) { + if (p->image) free(p->image); + free(p); + } + return NULL; +} + +static void nsvg__deletePaths(NSVGpath* path) +{ + while (path) { + NSVGpath *next = path->next; + if (path->pts != NULL) + free(path->pts); + free(path); + path = next; + } +} + +static void nsvg__deletePaint(NSVGpaint* paint) +{ + if (paint->type == NSVG_PAINT_LINEAR_GRADIENT || paint->type == NSVG_PAINT_RADIAL_GRADIENT) + free(paint->gradient); +} + +static void nsvg__deleteGradientData(NSVGgradientData* grad) +{ + NSVGgradientData* next; + while (grad != NULL) { + next = grad->next; + free(grad->stops); + free(grad); + grad = next; + } +} + +static void nsvg__deleteParser(NSVGparser* p) +{ + if (p != NULL) { + nsvg__deletePaths(p->plist); + nsvg__deleteGradientData(p->gradients); + nsvgDelete(p->image); + free(p->pts); + free(p); + } +} + +static void nsvg__resetPath(NSVGparser* p) +{ + p->npts = 0; +} + +static void nsvg__addPoint(NSVGparser* p, float x, float y) +{ + if (p->npts+1 > p->cpts) { + p->cpts = p->cpts ? p->cpts*2 : 8; + p->pts = (float*)realloc(p->pts, p->cpts*2*sizeof(float)); + if (!p->pts) return; + } + p->pts[p->npts*2+0] = x; + p->pts[p->npts*2+1] = y; + p->npts++; +} + +static void nsvg__moveTo(NSVGparser* p, float x, float y) +{ + if (p->npts > 0) { + p->pts[(p->npts-1)*2+0] = x; + p->pts[(p->npts-1)*2+1] = y; + } else { + nsvg__addPoint(p, x, y); + } +} + +static void nsvg__lineTo(NSVGparser* p, float x, float y) +{ + float px,py, dx,dy; + if (p->npts > 0) { + px = p->pts[(p->npts-1)*2+0]; + py = p->pts[(p->npts-1)*2+1]; + dx = x - px; + dy = y - py; + nsvg__addPoint(p, px + dx/3.0f, py + dy/3.0f); + nsvg__addPoint(p, x - dx/3.0f, y - dy/3.0f); + nsvg__addPoint(p, x, y); + } +} + +static void nsvg__cubicBezTo(NSVGparser* p, float cpx1, float cpy1, float cpx2, float cpy2, float x, float y) +{ + nsvg__addPoint(p, cpx1, cpy1); + nsvg__addPoint(p, cpx2, cpy2); + nsvg__addPoint(p, x, y); +} + +static NSVGattrib* nsvg__getAttr(NSVGparser* p) +{ + return &p->attr[p->attrHead]; +} + +static void nsvg__pushAttr(NSVGparser* p) +{ + if (p->attrHead < NSVG_MAX_ATTR-1) { + p->attrHead++; + memcpy(&p->attr[p->attrHead], &p->attr[p->attrHead-1], sizeof(NSVGattrib)); + } +} + +static void nsvg__popAttr(NSVGparser* p) +{ + if (p->attrHead > 0) + p->attrHead--; +} + +static float nsvg__actualOrigX(NSVGparser* p) +{ + return p->viewMinx; +} + +static float nsvg__actualOrigY(NSVGparser* p) +{ + return p->viewMiny; +} + +static float nsvg__actualWidth(NSVGparser* p) +{ + return p->viewWidth; +} + +static float nsvg__actualHeight(NSVGparser* p) +{ + return p->viewHeight; +} + +static float nsvg__actualLength(NSVGparser* p) +{ + float w = nsvg__actualWidth(p), h = nsvg__actualHeight(p); + return sqrtf(w*w + h*h) / sqrtf(2.0f); +} + +static float nsvg__convertToPixels(NSVGparser* p, NSVGcoordinate c, float orig, float length) +{ + NSVGattrib* attr = nsvg__getAttr(p); + switch (c.units) { + case NSVG_UNITS_USER: return c.value; + case NSVG_UNITS_PX: return c.value; + case NSVG_UNITS_PT: return c.value / 72.0f * p->dpi; + case NSVG_UNITS_PC: return c.value / 6.0f * p->dpi; + case NSVG_UNITS_MM: return c.value / 25.4f * p->dpi; + case NSVG_UNITS_CM: return c.value / 2.54f * p->dpi; + case NSVG_UNITS_IN: return c.value * p->dpi; + case NSVG_UNITS_EM: return c.value * attr->fontSize; + case NSVG_UNITS_EX: return c.value * attr->fontSize * 0.52f; // x-height of Helvetica. + case NSVG_UNITS_PERCENT: return orig + c.value / 100.0f * length; + default: return c.value; + } + return c.value; +} + +static NSVGgradientData* nsvg__findGradientData(NSVGparser* p, const char* id) +{ + NSVGgradientData* grad = p->gradients; + while (grad) { + if (strcmp(grad->id, id) == 0) + return grad; + grad = grad->next; + } + return NULL; +} + +static NSVGgradient* nsvg__createGradient(NSVGparser* p, const char* id, const float* localBounds, char* paintType) +{ + NSVGattrib* attr = nsvg__getAttr(p); + NSVGgradientData* data = NULL; + NSVGgradientData* ref = NULL; + NSVGgradientStop* stops = NULL; + NSVGgradient* grad; + float ox, oy, sw, sh, sl; + int nstops = 0; + + data = nsvg__findGradientData(p, id); + if (data == NULL) return NULL; + + // TODO: use ref to fill in all unset values too. + ref = data; + while (ref != NULL) { + if (stops == NULL && ref->stops != NULL) { + stops = ref->stops; + nstops = ref->nstops; + break; + } + ref = nsvg__findGradientData(p, ref->ref); + } + if (stops == NULL) return NULL; + + grad = (NSVGgradient*)malloc(sizeof(NSVGgradient) + sizeof(NSVGgradientStop)*(nstops-1)); + if (grad == NULL) return NULL; + + // The shape width and height. + if (data->units == NSVG_OBJECT_SPACE) { + ox = localBounds[0]; + oy = localBounds[1]; + sw = localBounds[2] - localBounds[0]; + sh = localBounds[3] - localBounds[1]; + } else { + ox = nsvg__actualOrigX(p); + oy = nsvg__actualOrigY(p); + sw = nsvg__actualWidth(p); + sh = nsvg__actualHeight(p); + } + sl = sqrtf(sw*sw + sh*sh) / sqrtf(2.0f); + + if (data->type == NSVG_PAINT_LINEAR_GRADIENT) { + float x1, y1, x2, y2, dx, dy; + x1 = nsvg__convertToPixels(p, data->linear.x1, ox, sw); + y1 = nsvg__convertToPixels(p, data->linear.y1, oy, sh); + x2 = nsvg__convertToPixels(p, data->linear.x2, ox, sw); + y2 = nsvg__convertToPixels(p, data->linear.y2, oy, sh); + // Calculate transform aligned to the line + dx = x2 - x1; + dy = y2 - y1; + grad->xform[0] = dy; grad->xform[1] = -dx; + grad->xform[2] = dx; grad->xform[3] = dy; + grad->xform[4] = x1; grad->xform[5] = y1; + } else { + float cx, cy, fx, fy, r; + cx = nsvg__convertToPixels(p, data->radial.cx, ox, sw); + cy = nsvg__convertToPixels(p, data->radial.cy, oy, sh); + fx = nsvg__convertToPixels(p, data->radial.fx, ox, sw); + fy = nsvg__convertToPixels(p, data->radial.fy, oy, sh); + r = nsvg__convertToPixels(p, data->radial.r, 0, sl); + // Calculate transform aligned to the circle + grad->xform[0] = r; grad->xform[1] = 0; + grad->xform[2] = 0; grad->xform[3] = r; + grad->xform[4] = cx; grad->xform[5] = cy; + grad->fx = fx / r; + grad->fy = fy / r; + } + + nsvg__xformMultiply(grad->xform, data->xform); + nsvg__xformMultiply(grad->xform, attr->xform); + + grad->spread = data->spread; + memcpy(grad->stops, stops, nstops*sizeof(NSVGgradientStop)); + grad->nstops = nstops; + + *paintType = data->type; + + return grad; +} + +static float nsvg__getAverageScale(float* t) +{ + float sx = sqrtf(t[0]*t[0] + t[2]*t[2]); + float sy = sqrtf(t[1]*t[1] + t[3]*t[3]); + return (sx + sy) * 0.5f; +} + +static void nsvg__getLocalBounds(float* bounds, NSVGshape *shape, float* xform) +{ + NSVGpath* path; + float curve[4*2], curveBounds[4]; + int i, first = 1; + for (path = shape->paths; path != NULL; path = path->next) { + nsvg__xformPoint(&curve[0], &curve[1], path->pts[0], path->pts[1], xform); + for (i = 0; i < path->npts-1; i += 3) { + nsvg__xformPoint(&curve[2], &curve[3], path->pts[(i+1)*2], path->pts[(i+1)*2+1], xform); + nsvg__xformPoint(&curve[4], &curve[5], path->pts[(i+2)*2], path->pts[(i+2)*2+1], xform); + nsvg__xformPoint(&curve[6], &curve[7], path->pts[(i+3)*2], path->pts[(i+3)*2+1], xform); + nsvg__curveBounds(curveBounds, curve); + if (first) { + bounds[0] = curveBounds[0]; + bounds[1] = curveBounds[1]; + bounds[2] = curveBounds[2]; + bounds[3] = curveBounds[3]; + first = 0; + } else { + bounds[0] = nsvg__minf(bounds[0], curveBounds[0]); + bounds[1] = nsvg__minf(bounds[1], curveBounds[1]); + bounds[2] = nsvg__maxf(bounds[2], curveBounds[2]); + bounds[3] = nsvg__maxf(bounds[3], curveBounds[3]); + } + curve[0] = curve[6]; + curve[1] = curve[7]; + } + } +} + +static void nsvg__addShape(NSVGparser* p) +{ + NSVGattrib* attr = nsvg__getAttr(p); + float scale = 1.0f; + NSVGshape* shape; + NSVGpath* path; + int i; + + if (p->plist == NULL) + return; + + shape = (NSVGshape*)malloc(sizeof(NSVGshape)); + if (shape == NULL) goto error; + memset(shape, 0, sizeof(NSVGshape)); + + memcpy(shape->id, attr->id, sizeof shape->id); + scale = nsvg__getAverageScale(attr->xform); + shape->strokeWidth = attr->strokeWidth * scale; + shape->strokeDashOffset = attr->strokeDashOffset * scale; + shape->strokeDashCount = (char)attr->strokeDashCount; + for (i = 0; i < attr->strokeDashCount; i++) + shape->strokeDashArray[i] = attr->strokeDashArray[i] * scale; + shape->strokeLineJoin = attr->strokeLineJoin; + shape->strokeLineCap = attr->strokeLineCap; + shape->miterLimit = attr->miterLimit; + shape->fillRule = attr->fillRule; + shape->opacity = attr->opacity; + + shape->paths = p->plist; + p->plist = NULL; + + // Calculate shape bounds + shape->bounds[0] = shape->paths->bounds[0]; + shape->bounds[1] = shape->paths->bounds[1]; + shape->bounds[2] = shape->paths->bounds[2]; + shape->bounds[3] = shape->paths->bounds[3]; + for (path = shape->paths->next; path != NULL; path = path->next) { + shape->bounds[0] = nsvg__minf(shape->bounds[0], path->bounds[0]); + shape->bounds[1] = nsvg__minf(shape->bounds[1], path->bounds[1]); + shape->bounds[2] = nsvg__maxf(shape->bounds[2], path->bounds[2]); + shape->bounds[3] = nsvg__maxf(shape->bounds[3], path->bounds[3]); + } + + // Set fill + if (attr->hasFill == 0) { + shape->fill.type = NSVG_PAINT_NONE; + } else if (attr->hasFill == 1) { + shape->fill.type = NSVG_PAINT_COLOR; + shape->fill.color = attr->fillColor; + shape->fill.color |= (unsigned int)(attr->fillOpacity*255) << 24; + } else if (attr->hasFill == 2) { + float inv[6], localBounds[4]; + nsvg__xformInverse(inv, attr->xform); + nsvg__getLocalBounds(localBounds, shape, inv); + shape->fill.gradient = nsvg__createGradient(p, attr->fillGradient, localBounds, &shape->fill.type); + if (shape->fill.gradient == NULL) { + shape->fill.type = NSVG_PAINT_NONE; + } + } + + // Set stroke + if (attr->hasStroke == 0) { + shape->stroke.type = NSVG_PAINT_NONE; + } else if (attr->hasStroke == 1) { + shape->stroke.type = NSVG_PAINT_COLOR; + shape->stroke.color = attr->strokeColor; + shape->stroke.color |= (unsigned int)(attr->strokeOpacity*255) << 24; + } else if (attr->hasStroke == 2) { + float inv[6], localBounds[4]; + nsvg__xformInverse(inv, attr->xform); + nsvg__getLocalBounds(localBounds, shape, inv); + shape->stroke.gradient = nsvg__createGradient(p, attr->strokeGradient, localBounds, &shape->stroke.type); + if (shape->stroke.gradient == NULL) + shape->stroke.type = NSVG_PAINT_NONE; + } + + // Set flags + shape->flags = (attr->visible ? NSVG_FLAGS_VISIBLE : 0x00); + + // Add to tail + if (p->image->shapes == NULL) + p->image->shapes = shape; + else + p->shapesTail->next = shape; + p->shapesTail = shape; + + return; + +error: + if (shape) free(shape); +} + +static void nsvg__addPath(NSVGparser* p, char closed) +{ + NSVGattrib* attr = nsvg__getAttr(p); + NSVGpath* path = NULL; + float bounds[4]; + float* curve; + int i; + + if (p->npts < 4) + return; + + if (closed) + nsvg__lineTo(p, p->pts[0], p->pts[1]); + + path = (NSVGpath*)malloc(sizeof(NSVGpath)); + if (path == NULL) goto error; + memset(path, 0, sizeof(NSVGpath)); + + path->pts = (float*)malloc(p->npts*2*sizeof(float)); + if (path->pts == NULL) goto error; + path->closed = closed; + path->npts = p->npts; + + // Transform path. + for (i = 0; i < p->npts; ++i) + nsvg__xformPoint(&path->pts[i*2], &path->pts[i*2+1], p->pts[i*2], p->pts[i*2+1], attr->xform); + + // Find bounds + for (i = 0; i < path->npts-1; i += 3) { + curve = &path->pts[i*2]; + nsvg__curveBounds(bounds, curve); + if (i == 0) { + path->bounds[0] = bounds[0]; + path->bounds[1] = bounds[1]; + path->bounds[2] = bounds[2]; + path->bounds[3] = bounds[3]; + } else { + path->bounds[0] = nsvg__minf(path->bounds[0], bounds[0]); + path->bounds[1] = nsvg__minf(path->bounds[1], bounds[1]); + path->bounds[2] = nsvg__maxf(path->bounds[2], bounds[2]); + path->bounds[3] = nsvg__maxf(path->bounds[3], bounds[3]); + } + } + + path->next = p->plist; + p->plist = path; + + return; + +error: + if (path != NULL) { + if (path->pts != NULL) free(path->pts); + free(path); + } +} + +// We roll our own string to float because the std library one uses locale and messes things up. +static double nsvg__atof(const char* s) +{ + char* cur = (char*)s; + char* end = NULL; + double res = 0.0, sign = 1.0; + long long intPart = 0, fracPart = 0; + char hasIntPart = 0, hasFracPart = 0; + + // Parse optional sign + if (*cur == '+') { + cur++; + } else if (*cur == '-') { + sign = -1; + cur++; + } + + // Parse integer part + if (nsvg__isdigit(*cur)) { + // Parse digit sequence + intPart = (double)strtoll(cur, &end, 10); + if (cur != end) { + res = (double)intPart; + hasIntPart = 1; + cur = end; + } + } + + // Parse fractional part. + if (*cur == '.') { + cur++; // Skip '.' + if (nsvg__isdigit(*cur)) { + // Parse digit sequence + fracPart = strtoll(cur, &end, 10); + if (cur != end) { + res += (double)fracPart / pow(10.0, (double)(end - cur)); + hasFracPart = 1; + cur = end; + } + } + } + + // A valid number should have integer or fractional part. + if (!hasIntPart && !hasFracPart) + return 0.0; + + // Parse optional exponent + if (*cur == 'e' || *cur == 'E') { + int expPart = 0; + cur++; // skip 'E' + expPart = strtol(cur, &end, 10); // Parse digit sequence with sign + if (cur != end) { + res *= pow(10.0, (double)expPart); + } + } + + return res * sign; +} + + +static const char* nsvg__parseNumber(const char* s, char* it, const int size) +{ + const int last = size-1; + int i = 0; + + // sign + if (*s == '-' || *s == '+') { + if (i < last) it[i++] = *s; + s++; + } + // integer part + while (*s && nsvg__isdigit(*s)) { + if (i < last) it[i++] = *s; + s++; + } + if (*s == '.') { + // decimal point + if (i < last) it[i++] = *s; + s++; + // fraction part + while (*s && nsvg__isdigit(*s)) { + if (i < last) it[i++] = *s; + s++; + } + } + // exponent + if (*s == 'e' || *s == 'E') { + if (i < last) it[i++] = *s; + s++; + if (*s == '-' || *s == '+') { + if (i < last) it[i++] = *s; + s++; + } + while (*s && nsvg__isdigit(*s)) { + if (i < last) it[i++] = *s; + s++; + } + } + it[i] = '\0'; + + return s; +} + +static const char* nsvg__getNextPathItem(const char* s, char* it) +{ + it[0] = '\0'; + // Skip white spaces and commas + while (*s && (nsvg__isspace(*s) || *s == ',')) s++; + if (!*s) return s; + if (*s == '-' || *s == '+' || *s == '.' || nsvg__isdigit(*s)) { + s = nsvg__parseNumber(s, it, 64); + } else { + // Parse command + it[0] = *s++; + it[1] = '\0'; + return s; + } + + return s; +} + +static unsigned int nsvg__parseColorHex(const char* str) +{ + unsigned int c = 0, r = 0, g = 0, b = 0; + int n = 0; + str++; // skip # + // Calculate number of characters. + while(str[n] && !nsvg__isspace(str[n])) + n++; + if (n == 6) { + sscanf(str, "%x", &c); + } else if (n == 3) { + sscanf(str, "%x", &c); + c = (c&0xf) | ((c&0xf0) << 4) | ((c&0xf00) << 8); + c |= c<<4; + } + r = (c >> 16) & 0xff; + g = (c >> 8) & 0xff; + b = c & 0xff; + return NSVG_RGB(r,g,b); +} + +static unsigned int nsvg__parseColorRGB(const char* str) +{ + int r = -1, g = -1, b = -1; + char s1[32]="", s2[32]=""; + sscanf(str + 4, "%d%[%%, \t]%d%[%%, \t]%d", &r, s1, &g, s2, &b); + if (strchr(s1, '%')) { + return NSVG_RGB((r*255)/100,(g*255)/100,(b*255)/100); + } else { + return NSVG_RGB(r,g,b); + } +} + +typedef struct NSVGNamedColor { + const char* name; + unsigned int color; +} NSVGNamedColor; + +NSVGNamedColor nsvg__colors[] = { + + { "red", NSVG_RGB(255, 0, 0) }, + { "green", NSVG_RGB( 0, 128, 0) }, + { "blue", NSVG_RGB( 0, 0, 255) }, + { "yellow", NSVG_RGB(255, 255, 0) }, + { "cyan", NSVG_RGB( 0, 255, 255) }, + { "magenta", NSVG_RGB(255, 0, 255) }, + { "black", NSVG_RGB( 0, 0, 0) }, + { "grey", NSVG_RGB(128, 128, 128) }, + { "gray", NSVG_RGB(128, 128, 128) }, + { "white", NSVG_RGB(255, 255, 255) }, + +#ifdef NANOSVG_ALL_COLOR_KEYWORDS + { "aliceblue", NSVG_RGB(240, 248, 255) }, + { "antiquewhite", NSVG_RGB(250, 235, 215) }, + { "aqua", NSVG_RGB( 0, 255, 255) }, + { "aquamarine", NSVG_RGB(127, 255, 212) }, + { "azure", NSVG_RGB(240, 255, 255) }, + { "beige", NSVG_RGB(245, 245, 220) }, + { "bisque", NSVG_RGB(255, 228, 196) }, + { "blanchedalmond", NSVG_RGB(255, 235, 205) }, + { "blueviolet", NSVG_RGB(138, 43, 226) }, + { "brown", NSVG_RGB(165, 42, 42) }, + { "burlywood", NSVG_RGB(222, 184, 135) }, + { "cadetblue", NSVG_RGB( 95, 158, 160) }, + { "chartreuse", NSVG_RGB(127, 255, 0) }, + { "chocolate", NSVG_RGB(210, 105, 30) }, + { "coral", NSVG_RGB(255, 127, 80) }, + { "cornflowerblue", NSVG_RGB(100, 149, 237) }, + { "cornsilk", NSVG_RGB(255, 248, 220) }, + { "crimson", NSVG_RGB(220, 20, 60) }, + { "darkblue", NSVG_RGB( 0, 0, 139) }, + { "darkcyan", NSVG_RGB( 0, 139, 139) }, + { "darkgoldenrod", NSVG_RGB(184, 134, 11) }, + { "darkgray", NSVG_RGB(169, 169, 169) }, + { "darkgreen", NSVG_RGB( 0, 100, 0) }, + { "darkgrey", NSVG_RGB(169, 169, 169) }, + { "darkkhaki", NSVG_RGB(189, 183, 107) }, + { "darkmagenta", NSVG_RGB(139, 0, 139) }, + { "darkolivegreen", NSVG_RGB( 85, 107, 47) }, + { "darkorange", NSVG_RGB(255, 140, 0) }, + { "darkorchid", NSVG_RGB(153, 50, 204) }, + { "darkred", NSVG_RGB(139, 0, 0) }, + { "darksalmon", NSVG_RGB(233, 150, 122) }, + { "darkseagreen", NSVG_RGB(143, 188, 143) }, + { "darkslateblue", NSVG_RGB( 72, 61, 139) }, + { "darkslategray", NSVG_RGB( 47, 79, 79) }, + { "darkslategrey", NSVG_RGB( 47, 79, 79) }, + { "darkturquoise", NSVG_RGB( 0, 206, 209) }, + { "darkviolet", NSVG_RGB(148, 0, 211) }, + { "deeppink", NSVG_RGB(255, 20, 147) }, + { "deepskyblue", NSVG_RGB( 0, 191, 255) }, + { "dimgray", NSVG_RGB(105, 105, 105) }, + { "dimgrey", NSVG_RGB(105, 105, 105) }, + { "dodgerblue", NSVG_RGB( 30, 144, 255) }, + { "firebrick", NSVG_RGB(178, 34, 34) }, + { "floralwhite", NSVG_RGB(255, 250, 240) }, + { "forestgreen", NSVG_RGB( 34, 139, 34) }, + { "fuchsia", NSVG_RGB(255, 0, 255) }, + { "gainsboro", NSVG_RGB(220, 220, 220) }, + { "ghostwhite", NSVG_RGB(248, 248, 255) }, + { "gold", NSVG_RGB(255, 215, 0) }, + { "goldenrod", NSVG_RGB(218, 165, 32) }, + { "greenyellow", NSVG_RGB(173, 255, 47) }, + { "honeydew", NSVG_RGB(240, 255, 240) }, + { "hotpink", NSVG_RGB(255, 105, 180) }, + { "indianred", NSVG_RGB(205, 92, 92) }, + { "indigo", NSVG_RGB( 75, 0, 130) }, + { "ivory", NSVG_RGB(255, 255, 240) }, + { "khaki", NSVG_RGB(240, 230, 140) }, + { "lavender", NSVG_RGB(230, 230, 250) }, + { "lavenderblush", NSVG_RGB(255, 240, 245) }, + { "lawngreen", NSVG_RGB(124, 252, 0) }, + { "lemonchiffon", NSVG_RGB(255, 250, 205) }, + { "lightblue", NSVG_RGB(173, 216, 230) }, + { "lightcoral", NSVG_RGB(240, 128, 128) }, + { "lightcyan", NSVG_RGB(224, 255, 255) }, + { "lightgoldenrodyellow", NSVG_RGB(250, 250, 210) }, + { "lightgray", NSVG_RGB(211, 211, 211) }, + { "lightgreen", NSVG_RGB(144, 238, 144) }, + { "lightgrey", NSVG_RGB(211, 211, 211) }, + { "lightpink", NSVG_RGB(255, 182, 193) }, + { "lightsalmon", NSVG_RGB(255, 160, 122) }, + { "lightseagreen", NSVG_RGB( 32, 178, 170) }, + { "lightskyblue", NSVG_RGB(135, 206, 250) }, + { "lightslategray", NSVG_RGB(119, 136, 153) }, + { "lightslategrey", NSVG_RGB(119, 136, 153) }, + { "lightsteelblue", NSVG_RGB(176, 196, 222) }, + { "lightyellow", NSVG_RGB(255, 255, 224) }, + { "lime", NSVG_RGB( 0, 255, 0) }, + { "limegreen", NSVG_RGB( 50, 205, 50) }, + { "linen", NSVG_RGB(250, 240, 230) }, + { "maroon", NSVG_RGB(128, 0, 0) }, + { "mediumaquamarine", NSVG_RGB(102, 205, 170) }, + { "mediumblue", NSVG_RGB( 0, 0, 205) }, + { "mediumorchid", NSVG_RGB(186, 85, 211) }, + { "mediumpurple", NSVG_RGB(147, 112, 219) }, + { "mediumseagreen", NSVG_RGB( 60, 179, 113) }, + { "mediumslateblue", NSVG_RGB(123, 104, 238) }, + { "mediumspringgreen", NSVG_RGB( 0, 250, 154) }, + { "mediumturquoise", NSVG_RGB( 72, 209, 204) }, + { "mediumvioletred", NSVG_RGB(199, 21, 133) }, + { "midnightblue", NSVG_RGB( 25, 25, 112) }, + { "mintcream", NSVG_RGB(245, 255, 250) }, + { "mistyrose", NSVG_RGB(255, 228, 225) }, + { "moccasin", NSVG_RGB(255, 228, 181) }, + { "navajowhite", NSVG_RGB(255, 222, 173) }, + { "navy", NSVG_RGB( 0, 0, 128) }, + { "oldlace", NSVG_RGB(253, 245, 230) }, + { "olive", NSVG_RGB(128, 128, 0) }, + { "olivedrab", NSVG_RGB(107, 142, 35) }, + { "orange", NSVG_RGB(255, 165, 0) }, + { "orangered", NSVG_RGB(255, 69, 0) }, + { "orchid", NSVG_RGB(218, 112, 214) }, + { "palegoldenrod", NSVG_RGB(238, 232, 170) }, + { "palegreen", NSVG_RGB(152, 251, 152) }, + { "paleturquoise", NSVG_RGB(175, 238, 238) }, + { "palevioletred", NSVG_RGB(219, 112, 147) }, + { "papayawhip", NSVG_RGB(255, 239, 213) }, + { "peachpuff", NSVG_RGB(255, 218, 185) }, + { "peru", NSVG_RGB(205, 133, 63) }, + { "pink", NSVG_RGB(255, 192, 203) }, + { "plum", NSVG_RGB(221, 160, 221) }, + { "powderblue", NSVG_RGB(176, 224, 230) }, + { "purple", NSVG_RGB(128, 0, 128) }, + { "rosybrown", NSVG_RGB(188, 143, 143) }, + { "royalblue", NSVG_RGB( 65, 105, 225) }, + { "saddlebrown", NSVG_RGB(139, 69, 19) }, + { "salmon", NSVG_RGB(250, 128, 114) }, + { "sandybrown", NSVG_RGB(244, 164, 96) }, + { "seagreen", NSVG_RGB( 46, 139, 87) }, + { "seashell", NSVG_RGB(255, 245, 238) }, + { "sienna", NSVG_RGB(160, 82, 45) }, + { "silver", NSVG_RGB(192, 192, 192) }, + { "skyblue", NSVG_RGB(135, 206, 235) }, + { "slateblue", NSVG_RGB(106, 90, 205) }, + { "slategray", NSVG_RGB(112, 128, 144) }, + { "slategrey", NSVG_RGB(112, 128, 144) }, + { "snow", NSVG_RGB(255, 250, 250) }, + { "springgreen", NSVG_RGB( 0, 255, 127) }, + { "steelblue", NSVG_RGB( 70, 130, 180) }, + { "tan", NSVG_RGB(210, 180, 140) }, + { "teal", NSVG_RGB( 0, 128, 128) }, + { "thistle", NSVG_RGB(216, 191, 216) }, + { "tomato", NSVG_RGB(255, 99, 71) }, + { "turquoise", NSVG_RGB( 64, 224, 208) }, + { "violet", NSVG_RGB(238, 130, 238) }, + { "wheat", NSVG_RGB(245, 222, 179) }, + { "whitesmoke", NSVG_RGB(245, 245, 245) }, + { "yellowgreen", NSVG_RGB(154, 205, 50) }, +#endif +}; + +static unsigned int nsvg__parseColorName(const char* str) +{ + int i, ncolors = sizeof(nsvg__colors) / sizeof(NSVGNamedColor); + + for (i = 0; i < ncolors; i++) { + if (strcmp(nsvg__colors[i].name, str) == 0) { + return nsvg__colors[i].color; + } + } + + return NSVG_RGB(128, 128, 128); +} + +static unsigned int nsvg__parseColor(const char* str) +{ + size_t len = 0; + while(*str == ' ') ++str; + len = strlen(str); + if (len >= 1 && *str == '#') + return nsvg__parseColorHex(str); + else if (len >= 4 && str[0] == 'r' && str[1] == 'g' && str[2] == 'b' && str[3] == '(') + return nsvg__parseColorRGB(str); + return nsvg__parseColorName(str); +} + +static float nsvg__parseOpacity(const char* str) +{ + float val = 0; + sscanf(str, "%f", &val); + if (val < 0.0f) val = 0.0f; + if (val > 1.0f) val = 1.0f; + return val; +} + +static float nsvg__parseMiterLimit(const char* str) +{ + float val = 0; + sscanf(str, "%f", &val); + if (val < 0.0f) val = 0.0f; + return val; +} + +static int nsvg__parseUnits(const char* units) +{ + if (units[0] == 'p' && units[1] == 'x') + return NSVG_UNITS_PX; + else if (units[0] == 'p' && units[1] == 't') + return NSVG_UNITS_PT; + else if (units[0] == 'p' && units[1] == 'c') + return NSVG_UNITS_PC; + else if (units[0] == 'm' && units[1] == 'm') + return NSVG_UNITS_MM; + else if (units[0] == 'c' && units[1] == 'm') + return NSVG_UNITS_CM; + else if (units[0] == 'i' && units[1] == 'n') + return NSVG_UNITS_IN; + else if (units[0] == '%') + return NSVG_UNITS_PERCENT; + else if (units[0] == 'e' && units[1] == 'm') + return NSVG_UNITS_EM; + else if (units[0] == 'e' && units[1] == 'x') + return NSVG_UNITS_EX; + return NSVG_UNITS_USER; +} + +static NSVGcoordinate nsvg__parseCoordinateRaw(const char* str) +{ + NSVGcoordinate coord = {0, NSVG_UNITS_USER}; + char units[32]=""; + sscanf(str, "%f%31s", &coord.value, units); + coord.units = nsvg__parseUnits(units); + return coord; +} + +static NSVGcoordinate nsvg__coord(float v, int units) +{ + NSVGcoordinate coord = {v, units}; + return coord; +} + +static float nsvg__parseCoordinate(NSVGparser* p, const char* str, float orig, float length) +{ + NSVGcoordinate coord = nsvg__parseCoordinateRaw(str); + return nsvg__convertToPixels(p, coord, orig, length); +} + +static int nsvg__parseTransformArgs(const char* str, float* args, int maxNa, int* na) +{ + const char* end; + const char* ptr; + char it[64]; + + *na = 0; + ptr = str; + while (*ptr && *ptr != '(') ++ptr; + if (*ptr == 0) + return 1; + end = ptr; + while (*end && *end != ')') ++end; + if (*end == 0) + return 1; + + while (ptr < end) { + if (*ptr == '-' || *ptr == '+' || *ptr == '.' || nsvg__isdigit(*ptr)) { + if (*na >= maxNa) return 0; + ptr = nsvg__parseNumber(ptr, it, 64); + args[(*na)++] = (float)nsvg__atof(it); + } else { + ++ptr; + } + } + return (int)(end - str); +} + + +static int nsvg__parseMatrix(float* xform, const char* str) +{ + float t[6]; + int na = 0; + int len = nsvg__parseTransformArgs(str, t, 6, &na); + if (na != 6) return len; + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseTranslate(float* xform, const char* str) +{ + float args[2]; + float t[6]; + int na = 0; + int len = nsvg__parseTransformArgs(str, args, 2, &na); + if (na == 1) args[1] = 0.0; + + nsvg__xformSetTranslation(t, args[0], args[1]); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseScale(float* xform, const char* str) +{ + float args[2]; + int na = 0; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 2, &na); + if (na == 1) args[1] = args[0]; + nsvg__xformSetScale(t, args[0], args[1]); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseSkewX(float* xform, const char* str) +{ + float args[1]; + int na = 0; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 1, &na); + nsvg__xformSetSkewX(t, args[0]/180.0f*NSVG_PI); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseSkewY(float* xform, const char* str) +{ + float args[1]; + int na = 0; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 1, &na); + nsvg__xformSetSkewY(t, args[0]/180.0f*NSVG_PI); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseRotate(float* xform, const char* str) +{ + float args[3]; + int na = 0; + float m[6]; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 3, &na); + if (na == 1) + args[1] = args[2] = 0.0f; + nsvg__xformIdentity(m); + + if (na > 1) { + nsvg__xformSetTranslation(t, -args[1], -args[2]); + nsvg__xformMultiply(m, t); + } + + nsvg__xformSetRotation(t, args[0]/180.0f*NSVG_PI); + nsvg__xformMultiply(m, t); + + if (na > 1) { + nsvg__xformSetTranslation(t, args[1], args[2]); + nsvg__xformMultiply(m, t); + } + + memcpy(xform, m, sizeof(float)*6); + + return len; +} + +static void nsvg__parseTransform(float* xform, const char* str) +{ + float t[6]; + nsvg__xformIdentity(xform); + while (*str) + { + if (strncmp(str, "matrix", 6) == 0) + str += nsvg__parseMatrix(t, str); + else if (strncmp(str, "translate", 9) == 0) + str += nsvg__parseTranslate(t, str); + else if (strncmp(str, "scale", 5) == 0) + str += nsvg__parseScale(t, str); + else if (strncmp(str, "rotate", 6) == 0) + str += nsvg__parseRotate(t, str); + else if (strncmp(str, "skewX", 5) == 0) + str += nsvg__parseSkewX(t, str); + else if (strncmp(str, "skewY", 5) == 0) + str += nsvg__parseSkewY(t, str); + else{ + ++str; + continue; + } + + nsvg__xformPremultiply(xform, t); + } +} + +static void nsvg__parseUrl(char* id, const char* str) +{ + int i = 0; + str += 4; // "url("; + if (*str == '#') + str++; + while (i < 63 && *str != ')') { + id[i] = *str++; + i++; + } + id[i] = '\0'; +} + +static char nsvg__parseLineCap(const char* str) +{ + if (strcmp(str, "butt") == 0) + return NSVG_CAP_BUTT; + else if (strcmp(str, "round") == 0) + return NSVG_CAP_ROUND; + else if (strcmp(str, "square") == 0) + return NSVG_CAP_SQUARE; + // TODO: handle inherit. + return NSVG_CAP_BUTT; +} + +static char nsvg__parseLineJoin(const char* str) +{ + if (strcmp(str, "miter") == 0) + return NSVG_JOIN_MITER; + else if (strcmp(str, "round") == 0) + return NSVG_JOIN_ROUND; + else if (strcmp(str, "bevel") == 0) + return NSVG_JOIN_BEVEL; + // TODO: handle inherit. + return NSVG_CAP_BUTT; +} + +static char nsvg__parseFillRule(const char* str) +{ + if (strcmp(str, "nonzero") == 0) + return NSVG_FILLRULE_NONZERO; + else if (strcmp(str, "evenodd") == 0) + return NSVG_FILLRULE_EVENODD; + // TODO: handle inherit. + return NSVG_FILLRULE_NONZERO; +} + +static const char* nsvg__getNextDashItem(const char* s, char* it) +{ + int n = 0; + it[0] = '\0'; + // Skip white spaces and commas + while (*s && (nsvg__isspace(*s) || *s == ',')) s++; + // Advance until whitespace, comma or end. + while (*s && (!nsvg__isspace(*s) && *s != ',')) { + if (n < 63) + it[n++] = *s; + s++; + } + it[n++] = '\0'; + return s; +} + +static int nsvg__parseStrokeDashArray(NSVGparser* p, const char* str, float* strokeDashArray) +{ + char item[64]; + int count = 0, i; + float sum = 0.0f; + + // Handle "none" + if (str[0] == 'n') + return 0; + + // Parse dashes + while (*str) { + str = nsvg__getNextDashItem(str, item); + if (!*item) break; + if (count < NSVG_MAX_DASHES) + strokeDashArray[count++] = fabsf(nsvg__parseCoordinate(p, item, 0.0f, nsvg__actualLength(p))); + } + + for (i = 0; i < count; i++) + sum += strokeDashArray[i]; + if (sum <= 1e-6f) + count = 0; + + return count; +} + +static void nsvg__parseStyle(NSVGparser* p, const char* str); + +static int nsvg__parseAttr(NSVGparser* p, const char* name, const char* value) +{ + float xform[6]; + NSVGattrib* attr = nsvg__getAttr(p); + if (!attr) return 0; + + if (strcmp(name, "style") == 0) { + nsvg__parseStyle(p, value); + } else if (strcmp(name, "display") == 0) { + if (strcmp(value, "none") == 0) + attr->visible = 0; + // Don't reset ->visible on display:inline, one display:none hides the whole subtree + + } else if (strcmp(name, "fill") == 0) { + if (strcmp(value, "none") == 0) { + attr->hasFill = 0; + } else if (strncmp(value, "url(", 4) == 0) { + attr->hasFill = 2; + nsvg__parseUrl(attr->fillGradient, value); + } else { + attr->hasFill = 1; + attr->fillColor = nsvg__parseColor(value); + } + } else if (strcmp(name, "opacity") == 0) { + attr->opacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "fill-opacity") == 0) { + attr->fillOpacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "stroke") == 0) { + if (strcmp(value, "none") == 0) { + attr->hasStroke = 0; + } else if (strncmp(value, "url(", 4) == 0) { + attr->hasStroke = 2; + nsvg__parseUrl(attr->strokeGradient, value); + } else { + attr->hasStroke = 1; + attr->strokeColor = nsvg__parseColor(value); + } + } else if (strcmp(name, "stroke-width") == 0) { + attr->strokeWidth = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p)); + } else if (strcmp(name, "stroke-dasharray") == 0) { + attr->strokeDashCount = nsvg__parseStrokeDashArray(p, value, attr->strokeDashArray); + } else if (strcmp(name, "stroke-dashoffset") == 0) { + attr->strokeDashOffset = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p)); + } else if (strcmp(name, "stroke-opacity") == 0) { + attr->strokeOpacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "stroke-linecap") == 0) { + attr->strokeLineCap = nsvg__parseLineCap(value); + } else if (strcmp(name, "stroke-linejoin") == 0) { + attr->strokeLineJoin = nsvg__parseLineJoin(value); + } else if (strcmp(name, "stroke-miterlimit") == 0) { + attr->miterLimit = nsvg__parseMiterLimit(value); + } else if (strcmp(name, "fill-rule") == 0) { + attr->fillRule = nsvg__parseFillRule(value); + } else if (strcmp(name, "font-size") == 0) { + attr->fontSize = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p)); + } else if (strcmp(name, "transform") == 0) { + nsvg__parseTransform(xform, value); + nsvg__xformPremultiply(attr->xform, xform); + } else if (strcmp(name, "stop-color") == 0) { + attr->stopColor = nsvg__parseColor(value); + } else if (strcmp(name, "stop-opacity") == 0) { + attr->stopOpacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "offset") == 0) { + attr->stopOffset = nsvg__parseCoordinate(p, value, 0.0f, 1.0f); + } else if (strcmp(name, "id") == 0) { + strncpy(attr->id, value, 63); + attr->id[63] = '\0'; + } else { + return 0; + } + return 1; +} + +static int nsvg__parseNameValue(NSVGparser* p, const char* start, const char* end) +{ + const char* str; + const char* val; + char name[512]; + char value[512]; + int n; + + str = start; + while (str < end && *str != ':') ++str; + + val = str; + + // Right Trim + while (str > start && (*str == ':' || nsvg__isspace(*str))) --str; + ++str; + + n = (int)(str - start); + if (n > 511) n = 511; + if (n) memcpy(name, start, n); + name[n] = 0; + + while (val < end && (*val == ':' || nsvg__isspace(*val))) ++val; + + n = (int)(end - val); + if (n > 511) n = 511; + if (n) memcpy(value, val, n); + value[n] = 0; + + return nsvg__parseAttr(p, name, value); +} + +static void nsvg__parseStyle(NSVGparser* p, const char* str) +{ + const char* start; + const char* end; + + while (*str) { + // Left Trim + while(*str && nsvg__isspace(*str)) ++str; + start = str; + while(*str && *str != ';') ++str; + end = str; + + // Right Trim + while (end > start && (*end == ';' || nsvg__isspace(*end))) --end; + ++end; + + nsvg__parseNameValue(p, start, end); + if (*str) ++str; + } +} + +static void nsvg__parseAttribs(NSVGparser* p, const char** attr) +{ + int i; + for (i = 0; attr[i]; i += 2) + { + if (strcmp(attr[i], "style") == 0) + nsvg__parseStyle(p, attr[i + 1]); + else + nsvg__parseAttr(p, attr[i], attr[i + 1]); + } +} + +static int nsvg__getArgsPerElement(char cmd) +{ + switch (cmd) { + case 'v': + case 'V': + case 'h': + case 'H': + return 1; + case 'm': + case 'M': + case 'l': + case 'L': + case 't': + case 'T': + return 2; + case 'q': + case 'Q': + case 's': + case 'S': + return 4; + case 'c': + case 'C': + return 6; + case 'a': + case 'A': + return 7; + } + return 0; +} + +static void nsvg__pathMoveTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) { + *cpx += args[0]; + *cpy += args[1]; + } else { + *cpx = args[0]; + *cpy = args[1]; + } + nsvg__moveTo(p, *cpx, *cpy); +} + +static void nsvg__pathLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) { + *cpx += args[0]; + *cpy += args[1]; + } else { + *cpx = args[0]; + *cpy = args[1]; + } + nsvg__lineTo(p, *cpx, *cpy); +} + +static void nsvg__pathHLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) + *cpx += args[0]; + else + *cpx = args[0]; + nsvg__lineTo(p, *cpx, *cpy); +} + +static void nsvg__pathVLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) + *cpy += args[0]; + else + *cpy = args[0]; + nsvg__lineTo(p, *cpx, *cpy); +} + +static void nsvg__pathCubicBezTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x2, y2, cx1, cy1, cx2, cy2; + + if (rel) { + cx1 = *cpx + args[0]; + cy1 = *cpy + args[1]; + cx2 = *cpx + args[2]; + cy2 = *cpy + args[3]; + x2 = *cpx + args[4]; + y2 = *cpy + args[5]; + } else { + cx1 = args[0]; + cy1 = args[1]; + cx2 = args[2]; + cy2 = args[3]; + x2 = args[4]; + y2 = args[5]; + } + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx2; + *cpy2 = cy2; + *cpx = x2; + *cpy = y2; +} + +static void nsvg__pathCubicBezShortTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x1, y1, x2, y2, cx1, cy1, cx2, cy2; + + x1 = *cpx; + y1 = *cpy; + if (rel) { + cx2 = *cpx + args[0]; + cy2 = *cpy + args[1]; + x2 = *cpx + args[2]; + y2 = *cpy + args[3]; + } else { + cx2 = args[0]; + cy2 = args[1]; + x2 = args[2]; + y2 = args[3]; + } + + cx1 = 2*x1 - *cpx2; + cy1 = 2*y1 - *cpy2; + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx2; + *cpy2 = cy2; + *cpx = x2; + *cpy = y2; +} + +static void nsvg__pathQuadBezTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x1, y1, x2, y2, cx, cy; + float cx1, cy1, cx2, cy2; + + x1 = *cpx; + y1 = *cpy; + if (rel) { + cx = *cpx + args[0]; + cy = *cpy + args[1]; + x2 = *cpx + args[2]; + y2 = *cpy + args[3]; + } else { + cx = args[0]; + cy = args[1]; + x2 = args[2]; + y2 = args[3]; + } + + // Convert to cubic bezier + cx1 = x1 + 2.0f/3.0f*(cx - x1); + cy1 = y1 + 2.0f/3.0f*(cy - y1); + cx2 = x2 + 2.0f/3.0f*(cx - x2); + cy2 = y2 + 2.0f/3.0f*(cy - y2); + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx; + *cpy2 = cy; + *cpx = x2; + *cpy = y2; +} + +static void nsvg__pathQuadBezShortTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x1, y1, x2, y2, cx, cy; + float cx1, cy1, cx2, cy2; + + x1 = *cpx; + y1 = *cpy; + if (rel) { + x2 = *cpx + args[0]; + y2 = *cpy + args[1]; + } else { + x2 = args[0]; + y2 = args[1]; + } + + cx = 2*x1 - *cpx2; + cy = 2*y1 - *cpy2; + + // Convert to cubix bezier + cx1 = x1 + 2.0f/3.0f*(cx - x1); + cy1 = y1 + 2.0f/3.0f*(cy - y1); + cx2 = x2 + 2.0f/3.0f*(cx - x2); + cy2 = y2 + 2.0f/3.0f*(cy - y2); + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx; + *cpy2 = cy; + *cpx = x2; + *cpy = y2; +} + +static float nsvg__sqr(float x) { return x*x; } +static float nsvg__vmag(float x, float y) { return sqrtf(x*x + y*y); } + +static float nsvg__vecrat(float ux, float uy, float vx, float vy) +{ + return (ux*vx + uy*vy) / (nsvg__vmag(ux,uy) * nsvg__vmag(vx,vy)); +} + +static float nsvg__vecang(float ux, float uy, float vx, float vy) +{ + float r = nsvg__vecrat(ux,uy, vx,vy); + if (r < -1.0f) r = -1.0f; + if (r > 1.0f) r = 1.0f; + return ((ux*vy < uy*vx) ? -1.0f : 1.0f) * acosf(r); +} + +static void nsvg__pathArcTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + // Ported from canvg (https://code.google.com/p/canvg/) + float rx, ry, rotx; + float x1, y1, x2, y2, cx, cy, dx, dy, d; + float x1p, y1p, cxp, cyp, s, sa, sb; + float ux, uy, vx, vy, a1, da; + float x, y, tanx, tany, a, px = 0, py = 0, ptanx = 0, ptany = 0, t[6]; + float sinrx, cosrx; + int fa, fs; + int i, ndivs; + float hda, kappa; + + rx = fabsf(args[0]); // y radius + ry = fabsf(args[1]); // x radius + rotx = args[2] / 180.0f * NSVG_PI; // x rotation angle + fa = fabsf(args[3]) > 1e-6 ? 1 : 0; // Large arc + fs = fabsf(args[4]) > 1e-6 ? 1 : 0; // Sweep direction + x1 = *cpx; // start point + y1 = *cpy; + if (rel) { // end point + x2 = *cpx + args[5]; + y2 = *cpy + args[6]; + } else { + x2 = args[5]; + y2 = args[6]; + } + + dx = x1 - x2; + dy = y1 - y2; + d = sqrtf(dx*dx + dy*dy); + if (d < 1e-6f || rx < 1e-6f || ry < 1e-6f) { + // The arc degenerates to a line + nsvg__lineTo(p, x2, y2); + *cpx = x2; + *cpy = y2; + return; + } + + sinrx = sinf(rotx); + cosrx = cosf(rotx); + + // Convert to center point parameterization. + // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes + // 1) Compute x1', y1' + x1p = cosrx * dx / 2.0f + sinrx * dy / 2.0f; + y1p = -sinrx * dx / 2.0f + cosrx * dy / 2.0f; + d = nsvg__sqr(x1p)/nsvg__sqr(rx) + nsvg__sqr(y1p)/nsvg__sqr(ry); + if (d > 1) { + d = sqrtf(d); + rx *= d; + ry *= d; + } + // 2) Compute cx', cy' + s = 0.0f; + sa = nsvg__sqr(rx)*nsvg__sqr(ry) - nsvg__sqr(rx)*nsvg__sqr(y1p) - nsvg__sqr(ry)*nsvg__sqr(x1p); + sb = nsvg__sqr(rx)*nsvg__sqr(y1p) + nsvg__sqr(ry)*nsvg__sqr(x1p); + if (sa < 0.0f) sa = 0.0f; + if (sb > 0.0f) + s = sqrtf(sa / sb); + if (fa == fs) + s = -s; + cxp = s * rx * y1p / ry; + cyp = s * -ry * x1p / rx; + + // 3) Compute cx,cy from cx',cy' + cx = (x1 + x2)/2.0f + cosrx*cxp - sinrx*cyp; + cy = (y1 + y2)/2.0f + sinrx*cxp + cosrx*cyp; + + // 4) Calculate theta1, and delta theta. + ux = (x1p - cxp) / rx; + uy = (y1p - cyp) / ry; + vx = (-x1p - cxp) / rx; + vy = (-y1p - cyp) / ry; + a1 = nsvg__vecang(1.0f,0.0f, ux,uy); // Initial angle + da = nsvg__vecang(ux,uy, vx,vy); // Delta angle + +// if (vecrat(ux,uy,vx,vy) <= -1.0f) da = NSVG_PI; +// if (vecrat(ux,uy,vx,vy) >= 1.0f) da = 0; + + if (fs == 0 && da > 0) + da -= 2 * NSVG_PI; + else if (fs == 1 && da < 0) + da += 2 * NSVG_PI; + + // Approximate the arc using cubic spline segments. + t[0] = cosrx; t[1] = sinrx; + t[2] = -sinrx; t[3] = cosrx; + t[4] = cx; t[5] = cy; + + // Split arc into max 90 degree segments. + // The loop assumes an iteration per end point (including start and end), this +1. + ndivs = (int)(fabsf(da) / (NSVG_PI*0.5f) + 1.0f); + hda = (da / (float)ndivs) / 2.0f; + kappa = fabsf(4.0f / 3.0f * (1.0f - cosf(hda)) / sinf(hda)); + if (da < 0.0f) + kappa = -kappa; + + for (i = 0; i <= ndivs; i++) { + a = a1 + da * ((float)i/(float)ndivs); + dx = cosf(a); + dy = sinf(a); + nsvg__xformPoint(&x, &y, dx*rx, dy*ry, t); // position + nsvg__xformVec(&tanx, &tany, -dy*rx * kappa, dx*ry * kappa, t); // tangent + if (i > 0) + nsvg__cubicBezTo(p, px+ptanx,py+ptany, x-tanx, y-tany, x, y); + px = x; + py = y; + ptanx = tanx; + ptany = tany; + } + + *cpx = x2; + *cpy = y2; +} + +static void nsvg__parsePath(NSVGparser* p, const char** attr) +{ + const char* s = NULL; + char cmd = '\0'; + float args[10]; + int nargs; + int rargs = 0; + float cpx, cpy, cpx2, cpy2; + const char* tmp[4]; + char closedFlag; + int i; + char item[64]; + + for (i = 0; attr[i]; i += 2) { + if (strcmp(attr[i], "d") == 0) { + s = attr[i + 1]; + } else { + tmp[0] = attr[i]; + tmp[1] = attr[i + 1]; + tmp[2] = 0; + tmp[3] = 0; + nsvg__parseAttribs(p, tmp); + } + } + + if (s) { + nsvg__resetPath(p); + cpx = 0; cpy = 0; + cpx2 = 0; cpy2 = 0; + closedFlag = 0; + nargs = 0; + + while (*s) { + s = nsvg__getNextPathItem(s, item); + if (!*item) break; + if (nsvg__isnum(item[0])) { + if (nargs < 10) + args[nargs++] = (float)nsvg__atof(item); + if (nargs >= rargs) { + switch (cmd) { + case 'm': + case 'M': + nsvg__pathMoveTo(p, &cpx, &cpy, args, cmd == 'm' ? 1 : 0); + // Moveto can be followed by multiple coordinate pairs, + // which should be treated as linetos. + cmd = (cmd == 'm') ? 'l' : 'L'; + rargs = nsvg__getArgsPerElement(cmd); + cpx2 = cpx; cpy2 = cpy; + break; + case 'l': + case 'L': + nsvg__pathLineTo(p, &cpx, &cpy, args, cmd == 'l' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + case 'H': + case 'h': + nsvg__pathHLineTo(p, &cpx, &cpy, args, cmd == 'h' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + case 'V': + case 'v': + nsvg__pathVLineTo(p, &cpx, &cpy, args, cmd == 'v' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + case 'C': + case 'c': + nsvg__pathCubicBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'c' ? 1 : 0); + break; + case 'S': + case 's': + nsvg__pathCubicBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 's' ? 1 : 0); + break; + case 'Q': + case 'q': + nsvg__pathQuadBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'q' ? 1 : 0); + break; + case 'T': + case 't': + nsvg__pathQuadBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 't' ? 1 : 0); + break; + case 'A': + case 'a': + nsvg__pathArcTo(p, &cpx, &cpy, args, cmd == 'a' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + default: + if (nargs >= 2) { + cpx = args[nargs-2]; + cpy = args[nargs-1]; + cpx2 = cpx; cpy2 = cpy; + } + break; + } + nargs = 0; + } + } else { + cmd = item[0]; + rargs = nsvg__getArgsPerElement(cmd); + if (cmd == 'M' || cmd == 'm') { + // Commit path. + if (p->npts > 0) + nsvg__addPath(p, closedFlag); + // Start new subpath. + nsvg__resetPath(p); + closedFlag = 0; + nargs = 0; + } else if (cmd == 'Z' || cmd == 'z') { + closedFlag = 1; + // Commit path. + if (p->npts > 0) { + // Move current point to first point + cpx = p->pts[0]; + cpy = p->pts[1]; + cpx2 = cpx; cpy2 = cpy; + nsvg__addPath(p, closedFlag); + } + // Start new subpath. + nsvg__resetPath(p); + nsvg__moveTo(p, cpx, cpy); + closedFlag = 0; + nargs = 0; + } + } + } + // Commit path. + if (p->npts) + nsvg__addPath(p, closedFlag); + } + + nsvg__addShape(p); +} + +static void nsvg__parseRect(NSVGparser* p, const char** attr) +{ + float x = 0.0f; + float y = 0.0f; + float w = 0.0f; + float h = 0.0f; + float rx = -1.0f; // marks not set + float ry = -1.0f; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "x") == 0) x = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "y") == 0) y = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "width") == 0) w = nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p)); + if (strcmp(attr[i], "height") == 0) h = nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p)); + if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p))); + if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p))); + } + } + + if (rx < 0.0f && ry > 0.0f) rx = ry; + if (ry < 0.0f && rx > 0.0f) ry = rx; + if (rx < 0.0f) rx = 0.0f; + if (ry < 0.0f) ry = 0.0f; + if (rx > w/2.0f) rx = w/2.0f; + if (ry > h/2.0f) ry = h/2.0f; + + if (w != 0.0f && h != 0.0f) { + nsvg__resetPath(p); + + if (rx < 0.00001f || ry < 0.0001f) { + nsvg__moveTo(p, x, y); + nsvg__lineTo(p, x+w, y); + nsvg__lineTo(p, x+w, y+h); + nsvg__lineTo(p, x, y+h); + } else { + // Rounded rectangle + nsvg__moveTo(p, x+rx, y); + nsvg__lineTo(p, x+w-rx, y); + nsvg__cubicBezTo(p, x+w-rx*(1-NSVG_KAPPA90), y, x+w, y+ry*(1-NSVG_KAPPA90), x+w, y+ry); + nsvg__lineTo(p, x+w, y+h-ry); + nsvg__cubicBezTo(p, x+w, y+h-ry*(1-NSVG_KAPPA90), x+w-rx*(1-NSVG_KAPPA90), y+h, x+w-rx, y+h); + nsvg__lineTo(p, x+rx, y+h); + nsvg__cubicBezTo(p, x+rx*(1-NSVG_KAPPA90), y+h, x, y+h-ry*(1-NSVG_KAPPA90), x, y+h-ry); + nsvg__lineTo(p, x, y+ry); + nsvg__cubicBezTo(p, x, y+ry*(1-NSVG_KAPPA90), x+rx*(1-NSVG_KAPPA90), y, x+rx, y); + } + + nsvg__addPath(p, 1); + + nsvg__addShape(p); + } +} + +static void nsvg__parseCircle(NSVGparser* p, const char** attr) +{ + float cx = 0.0f; + float cy = 0.0f; + float r = 0.0f; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "r") == 0) r = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualLength(p))); + } + } + + if (r > 0.0f) { + nsvg__resetPath(p); + + nsvg__moveTo(p, cx+r, cy); + nsvg__cubicBezTo(p, cx+r, cy+r*NSVG_KAPPA90, cx+r*NSVG_KAPPA90, cy+r, cx, cy+r); + nsvg__cubicBezTo(p, cx-r*NSVG_KAPPA90, cy+r, cx-r, cy+r*NSVG_KAPPA90, cx-r, cy); + nsvg__cubicBezTo(p, cx-r, cy-r*NSVG_KAPPA90, cx-r*NSVG_KAPPA90, cy-r, cx, cy-r); + nsvg__cubicBezTo(p, cx+r*NSVG_KAPPA90, cy-r, cx+r, cy-r*NSVG_KAPPA90, cx+r, cy); + + nsvg__addPath(p, 1); + + nsvg__addShape(p); + } +} + +static void nsvg__parseEllipse(NSVGparser* p, const char** attr) +{ + float cx = 0.0f; + float cy = 0.0f; + float rx = 0.0f; + float ry = 0.0f; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p))); + if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p))); + } + } + + if (rx > 0.0f && ry > 0.0f) { + + nsvg__resetPath(p); + + nsvg__moveTo(p, cx+rx, cy); + nsvg__cubicBezTo(p, cx+rx, cy+ry*NSVG_KAPPA90, cx+rx*NSVG_KAPPA90, cy+ry, cx, cy+ry); + nsvg__cubicBezTo(p, cx-rx*NSVG_KAPPA90, cy+ry, cx-rx, cy+ry*NSVG_KAPPA90, cx-rx, cy); + nsvg__cubicBezTo(p, cx-rx, cy-ry*NSVG_KAPPA90, cx-rx*NSVG_KAPPA90, cy-ry, cx, cy-ry); + nsvg__cubicBezTo(p, cx+rx*NSVG_KAPPA90, cy-ry, cx+rx, cy-ry*NSVG_KAPPA90, cx+rx, cy); + + nsvg__addPath(p, 1); + + nsvg__addShape(p); + } +} + +static void nsvg__parseLine(NSVGparser* p, const char** attr) +{ + float x1 = 0.0; + float y1 = 0.0; + float x2 = 0.0; + float y2 = 0.0; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "x1") == 0) x1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "y1") == 0) y1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "x2") == 0) x2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "y2") == 0) y2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + } + } + + nsvg__resetPath(p); + + nsvg__moveTo(p, x1, y1); + nsvg__lineTo(p, x2, y2); + + nsvg__addPath(p, 0); + + nsvg__addShape(p); +} + +static void nsvg__parsePoly(NSVGparser* p, const char** attr, int closeFlag) +{ + int i; + const char* s; + float args[2]; + int nargs, npts = 0; + char item[64]; + + nsvg__resetPath(p); + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "points") == 0) { + s = attr[i + 1]; + nargs = 0; + while (*s) { + s = nsvg__getNextPathItem(s, item); + args[nargs++] = (float)nsvg__atof(item); + if (nargs >= 2) { + if (npts == 0) + nsvg__moveTo(p, args[0], args[1]); + else + nsvg__lineTo(p, args[0], args[1]); + nargs = 0; + npts++; + } + } + } + } + } + + nsvg__addPath(p, (char)closeFlag); + + nsvg__addShape(p); +} + +static void nsvg__parseSVG(NSVGparser* p, const char** attr) +{ + int i; + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "width") == 0) { + p->image->width = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 1.0f); + } else if (strcmp(attr[i], "height") == 0) { + p->image->height = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 1.0f); + } else if (strcmp(attr[i], "viewBox") == 0) { + sscanf(attr[i + 1], "%f%*[%%, \t]%f%*[%%, \t]%f%*[%%, \t]%f", &p->viewMinx, &p->viewMiny, &p->viewWidth, &p->viewHeight); + } else if (strcmp(attr[i], "preserveAspectRatio") == 0) { + if (strstr(attr[i + 1], "none") != 0) { + // No uniform scaling + p->alignType = NSVG_ALIGN_NONE; + } else { + // Parse X align + if (strstr(attr[i + 1], "xMin") != 0) + p->alignX = NSVG_ALIGN_MIN; + else if (strstr(attr[i + 1], "xMid") != 0) + p->alignX = NSVG_ALIGN_MID; + else if (strstr(attr[i + 1], "xMax") != 0) + p->alignX = NSVG_ALIGN_MAX; + // Parse X align + if (strstr(attr[i + 1], "yMin") != 0) + p->alignY = NSVG_ALIGN_MIN; + else if (strstr(attr[i + 1], "yMid") != 0) + p->alignY = NSVG_ALIGN_MID; + else if (strstr(attr[i + 1], "yMax") != 0) + p->alignY = NSVG_ALIGN_MAX; + // Parse meet/slice + p->alignType = NSVG_ALIGN_MEET; + if (strstr(attr[i + 1], "slice") != 0) + p->alignType = NSVG_ALIGN_SLICE; + } + } + } + } +} + +static void nsvg__parseGradient(NSVGparser* p, const char** attr, char type) +{ + int i; + NSVGgradientData* grad = (NSVGgradientData*)malloc(sizeof(NSVGgradientData)); + if (grad == NULL) return; + memset(grad, 0, sizeof(NSVGgradientData)); + grad->units = NSVG_OBJECT_SPACE; + grad->type = type; + if (grad->type == NSVG_PAINT_LINEAR_GRADIENT) { + grad->linear.x1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT); + grad->linear.y1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT); + grad->linear.x2 = nsvg__coord(100.0f, NSVG_UNITS_PERCENT); + grad->linear.y2 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT); + } else if (grad->type == NSVG_PAINT_RADIAL_GRADIENT) { + grad->radial.cx = nsvg__coord(50.0f, NSVG_UNITS_PERCENT); + grad->radial.cy = nsvg__coord(50.0f, NSVG_UNITS_PERCENT); + grad->radial.r = nsvg__coord(50.0f, NSVG_UNITS_PERCENT); + } + + nsvg__xformIdentity(grad->xform); + + for (i = 0; attr[i]; i += 2) { + if (strcmp(attr[i], "id") == 0) { + strncpy(grad->id, attr[i+1], 63); + grad->id[63] = '\0'; + } else if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "gradientUnits") == 0) { + if (strcmp(attr[i+1], "objectBoundingBox") == 0) + grad->units = NSVG_OBJECT_SPACE; + else + grad->units = NSVG_USER_SPACE; + } else if (strcmp(attr[i], "gradientTransform") == 0) { + nsvg__parseTransform(grad->xform, attr[i + 1]); + } else if (strcmp(attr[i], "cx") == 0) { + grad->radial.cx = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "cy") == 0) { + grad->radial.cy = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "r") == 0) { + grad->radial.r = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "fx") == 0) { + grad->radial.fx = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "fy") == 0) { + grad->radial.fy = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "x1") == 0) { + grad->linear.x1 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "y1") == 0) { + grad->linear.y1 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "x2") == 0) { + grad->linear.x2 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "y2") == 0) { + grad->linear.y2 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "spreadMethod") == 0) { + if (strcmp(attr[i+1], "pad") == 0) + grad->spread = NSVG_SPREAD_PAD; + else if (strcmp(attr[i+1], "reflect") == 0) + grad->spread = NSVG_SPREAD_REFLECT; + else if (strcmp(attr[i+1], "repeat") == 0) + grad->spread = NSVG_SPREAD_REPEAT; + } else if (strcmp(attr[i], "xlink:href") == 0) { + const char *href = attr[i+1]; + strncpy(grad->ref, href+1, 62); + grad->ref[62] = '\0'; + } + } + } + + grad->next = p->gradients; + p->gradients = grad; +} + +static void nsvg__parseGradientStop(NSVGparser* p, const char** attr) +{ + NSVGattrib* curAttr = nsvg__getAttr(p); + NSVGgradientData* grad; + NSVGgradientStop* stop; + int i, idx; + + curAttr->stopOffset = 0; + curAttr->stopColor = 0; + curAttr->stopOpacity = 1.0f; + + for (i = 0; attr[i]; i += 2) { + nsvg__parseAttr(p, attr[i], attr[i + 1]); + } + + // Add stop to the last gradient. + grad = p->gradients; + if (grad == NULL) return; + + grad->nstops++; + grad->stops = (NSVGgradientStop*)realloc(grad->stops, sizeof(NSVGgradientStop)*grad->nstops); + if (grad->stops == NULL) return; + + // Insert + idx = grad->nstops-1; + for (i = 0; i < grad->nstops-1; i++) { + if (curAttr->stopOffset < grad->stops[i].offset) { + idx = i; + break; + } + } + if (idx != grad->nstops-1) { + for (i = grad->nstops-1; i > idx; i--) + grad->stops[i] = grad->stops[i-1]; + } + + stop = &grad->stops[idx]; + stop->color = curAttr->stopColor; + stop->color |= (unsigned int)(curAttr->stopOpacity*255) << 24; + stop->offset = curAttr->stopOffset; +} + +static void nsvg__startElement(void* ud, const char* el, const char** attr) +{ + NSVGparser* p = (NSVGparser*)ud; + + if (p->defsFlag) { + // Skip everything but gradients in defs + if (strcmp(el, "linearGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT); + } else if (strcmp(el, "radialGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT); + } else if (strcmp(el, "stop") == 0) { + nsvg__parseGradientStop(p, attr); + } + return; + } + + if (strcmp(el, "g") == 0) { + nsvg__pushAttr(p); + nsvg__parseAttribs(p, attr); + } else if (strcmp(el, "path") == 0) { + if (p->pathFlag) // Do not allow nested paths. + return; + nsvg__pushAttr(p); + nsvg__parsePath(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "rect") == 0) { + nsvg__pushAttr(p); + nsvg__parseRect(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "circle") == 0) { + nsvg__pushAttr(p); + nsvg__parseCircle(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "ellipse") == 0) { + nsvg__pushAttr(p); + nsvg__parseEllipse(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "line") == 0) { + nsvg__pushAttr(p); + nsvg__parseLine(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "polyline") == 0) { + nsvg__pushAttr(p); + nsvg__parsePoly(p, attr, 0); + nsvg__popAttr(p); + } else if (strcmp(el, "polygon") == 0) { + nsvg__pushAttr(p); + nsvg__parsePoly(p, attr, 1); + nsvg__popAttr(p); + } else if (strcmp(el, "linearGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT); + } else if (strcmp(el, "radialGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT); + } else if (strcmp(el, "stop") == 0) { + nsvg__parseGradientStop(p, attr); + } else if (strcmp(el, "defs") == 0) { + p->defsFlag = 1; + } else if (strcmp(el, "svg") == 0) { + nsvg__parseSVG(p, attr); + } +} + +static void nsvg__endElement(void* ud, const char* el) +{ + NSVGparser* p = (NSVGparser*)ud; + + if (strcmp(el, "g") == 0) { + nsvg__popAttr(p); + } else if (strcmp(el, "path") == 0) { + p->pathFlag = 0; + } else if (strcmp(el, "defs") == 0) { + p->defsFlag = 0; + } +} + +static void nsvg__content(void* ud, const char* s) +{ + NSVG_NOTUSED(ud); + NSVG_NOTUSED(s); + // empty +} + +static void nsvg__imageBounds(NSVGparser* p, float* bounds) +{ + NSVGshape* shape; + shape = p->image->shapes; + if (shape == NULL) { + bounds[0] = bounds[1] = bounds[2] = bounds[3] = 0.0; + return; + } + bounds[0] = shape->bounds[0]; + bounds[1] = shape->bounds[1]; + bounds[2] = shape->bounds[2]; + bounds[3] = shape->bounds[3]; + for (shape = shape->next; shape != NULL; shape = shape->next) { + bounds[0] = nsvg__minf(bounds[0], shape->bounds[0]); + bounds[1] = nsvg__minf(bounds[1], shape->bounds[1]); + bounds[2] = nsvg__maxf(bounds[2], shape->bounds[2]); + bounds[3] = nsvg__maxf(bounds[3], shape->bounds[3]); + } +} + +static float nsvg__viewAlign(float content, float container, int type) +{ + if (type == NSVG_ALIGN_MIN) + return 0; + else if (type == NSVG_ALIGN_MAX) + return container - content; + // mid + return (container - content) * 0.5f; +} + +static void nsvg__scaleGradient(NSVGgradient* grad, float tx, float ty, float sx, float sy) +{ + float t[6]; + nsvg__xformSetTranslation(t, tx, ty); + nsvg__xformMultiply (grad->xform, t); + + nsvg__xformSetScale(t, sx, sy); + nsvg__xformMultiply (grad->xform, t); +} + +static void nsvg__scaleToViewbox(NSVGparser* p, const char* units) +{ + NSVGshape* shape; + NSVGpath* path; + float tx, ty, sx, sy, us, bounds[4], t[6], avgs; + int i; + float* pt; + + // Guess image size if not set completely. + nsvg__imageBounds(p, bounds); + + if (p->viewWidth == 0) { + if (p->image->width > 0) { + p->viewWidth = p->image->width; + } else { + p->viewMinx = bounds[0]; + p->viewWidth = bounds[2] - bounds[0]; + } + } + if (p->viewHeight == 0) { + if (p->image->height > 0) { + p->viewHeight = p->image->height; + } else { + p->viewMiny = bounds[1]; + p->viewHeight = bounds[3] - bounds[1]; + } + } + if (p->image->width == 0) + p->image->width = p->viewWidth; + if (p->image->height == 0) + p->image->height = p->viewHeight; + + tx = -p->viewMinx; + ty = -p->viewMiny; + sx = p->viewWidth > 0 ? p->image->width / p->viewWidth : 0; + sy = p->viewHeight > 0 ? p->image->height / p->viewHeight : 0; + // Unit scaling + us = 1.0f / nsvg__convertToPixels(p, nsvg__coord(1.0f, nsvg__parseUnits(units)), 0.0f, 1.0f); + + // Fix aspect ratio + if (p->alignType == NSVG_ALIGN_MEET) { + // fit whole image into viewbox + sx = sy = nsvg__minf(sx, sy); + tx += nsvg__viewAlign(p->viewWidth*sx, p->image->width, p->alignX) / sx; + ty += nsvg__viewAlign(p->viewHeight*sy, p->image->height, p->alignY) / sy; + } else if (p->alignType == NSVG_ALIGN_SLICE) { + // fill whole viewbox with image + sx = sy = nsvg__maxf(sx, sy); + tx += nsvg__viewAlign(p->viewWidth*sx, p->image->width, p->alignX) / sx; + ty += nsvg__viewAlign(p->viewHeight*sy, p->image->height, p->alignY) / sy; + } + + // Transform + sx *= us; + sy *= us; + avgs = (sx+sy) / 2.0f; + for (shape = p->image->shapes; shape != NULL; shape = shape->next) { + shape->bounds[0] = (shape->bounds[0] + tx) * sx; + shape->bounds[1] = (shape->bounds[1] + ty) * sy; + shape->bounds[2] = (shape->bounds[2] + tx) * sx; + shape->bounds[3] = (shape->bounds[3] + ty) * sy; + for (path = shape->paths; path != NULL; path = path->next) { + path->bounds[0] = (path->bounds[0] + tx) * sx; + path->bounds[1] = (path->bounds[1] + ty) * sy; + path->bounds[2] = (path->bounds[2] + tx) * sx; + path->bounds[3] = (path->bounds[3] + ty) * sy; + for (i =0; i < path->npts; i++) { + pt = &path->pts[i*2]; + pt[0] = (pt[0] + tx) * sx; + pt[1] = (pt[1] + ty) * sy; + } + } + + if (shape->fill.type == NSVG_PAINT_LINEAR_GRADIENT || shape->fill.type == NSVG_PAINT_RADIAL_GRADIENT) { + nsvg__scaleGradient(shape->fill.gradient, tx,ty, sx,sy); + memcpy(t, shape->fill.gradient->xform, sizeof(float)*6); + nsvg__xformInverse(shape->fill.gradient->xform, t); + } + if (shape->stroke.type == NSVG_PAINT_LINEAR_GRADIENT || shape->stroke.type == NSVG_PAINT_RADIAL_GRADIENT) { + nsvg__scaleGradient(shape->stroke.gradient, tx,ty, sx,sy); + memcpy(t, shape->stroke.gradient->xform, sizeof(float)*6); + nsvg__xformInverse(shape->stroke.gradient->xform, t); + } + + shape->strokeWidth *= avgs; + shape->strokeDashOffset *= avgs; + for (i = 0; i < shape->strokeDashCount; i++) + shape->strokeDashArray[i] *= avgs; + } +} + +NSVGimage* nsvgParse(char* input, const char* units, float dpi) +{ + NSVGparser* p; + NSVGimage* ret = 0; + + p = nsvg__createParser(); + if (p == NULL) { + return NULL; + } + p->dpi = dpi; + + nsvg__parseXML(input, nsvg__startElement, nsvg__endElement, nsvg__content, p); + + // Scale to viewBox + nsvg__scaleToViewbox(p, units); + + ret = p->image; + p->image = NULL; + + nsvg__deleteParser(p); + + return ret; +} + +NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi) +{ + FILE* fp = NULL; + size_t size; + char* data = NULL; + NSVGimage* image = NULL; + + fp = fopen(filename, "rb"); + if (!fp) goto error; + fseek(fp, 0, SEEK_END); + size = ftell(fp); + fseek(fp, 0, SEEK_SET); + data = (char*)malloc(size+1); + if (data == NULL) goto error; + if (fread(data, 1, size, fp) != size) goto error; + data[size] = '\0'; // Must be null terminated. + fclose(fp); + image = nsvgParse(data, units, dpi); + free(data); + + return image; + +error: + if (fp) fclose(fp); + if (data) free(data); + if (image) nsvgDelete(image); + return NULL; +} + +void nsvgDelete(NSVGimage* image) +{ + NSVGshape *snext, *shape; + if (image == NULL) return; + shape = image->shapes; + while (shape != NULL) { + snext = shape->next; + nsvg__deletePaths(shape->paths); + nsvg__deletePaint(&shape->fill); + nsvg__deletePaint(&shape->stroke); + free(shape); + shape = snext; + } + free(image); +} + +#endif diff --git a/thirdparty/nanosvg/src/nanosvgrast.h b/thirdparty/nanosvg/src/nanosvgrast.h new file mode 100644 index 0000000000..2940c1f916 --- /dev/null +++ b/thirdparty/nanosvg/src/nanosvgrast.h @@ -0,0 +1,1447 @@ +/* + * Copyright (c) 2013-14 Mikko Mononen memon@inside.org + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * The polygon rasterization is heavily based on stb_truetype rasterizer + * by Sean Barrett - http://nothings.org/ + * + */ + +#ifndef NANOSVGRAST_H +#define NANOSVGRAST_H + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct NSVGrasterizer NSVGrasterizer; + +/* Example Usage: + // Load SVG + struct SNVGImage* image = nsvgParseFromFile("test.svg."); + + // Create rasterizer (can be used to render multiple images). + struct NSVGrasterizer* rast = nsvgCreateRasterizer(); + // Allocate memory for image + unsigned char* img = malloc(w*h*4); + // Rasterize + nsvgRasterize(rast, image, 0,0,1, img, w, h, w*4); +*/ + +// Allocated rasterizer context. +NSVGrasterizer* nsvgCreateRasterizer(); + +// Rasterizes SVG image, returns RGBA image (non-premultiplied alpha) +// r - pointer to rasterizer context +// image - pointer to image to rasterize +// tx,ty - image offset (applied after scaling) +// scale - image scale +// dst - pointer to destination image data, 4 bytes per pixel (RGBA) +// w - width of the image to render +// h - height of the image to render +// stride - number of bytes per scaleline in the destination buffer +void nsvgRasterize(NSVGrasterizer* r, + NSVGimage* image, float tx, float ty, float scale, + unsigned char* dst, int w, int h, int stride); + +// Deletes rasterizer context. +void nsvgDeleteRasterizer(NSVGrasterizer*); + + +#ifdef __cplusplus +} +#endif + +#endif // NANOSVGRAST_H + +#ifdef NANOSVGRAST_IMPLEMENTATION + +#include <math.h> + +#define NSVG__SUBSAMPLES 5 +#define NSVG__FIXSHIFT 10 +#define NSVG__FIX (1 << NSVG__FIXSHIFT) +#define NSVG__FIXMASK (NSVG__FIX-1) +#define NSVG__MEMPAGE_SIZE 1024 + +typedef struct NSVGedge { + float x0,y0, x1,y1; + int dir; + struct NSVGedge* next; +} NSVGedge; + +typedef struct NSVGpoint { + float x, y; + float dx, dy; + float len; + float dmx, dmy; + unsigned char flags; +} NSVGpoint; + +typedef struct NSVGactiveEdge { + int x,dx; + float ey; + int dir; + struct NSVGactiveEdge *next; +} NSVGactiveEdge; + +typedef struct NSVGmemPage { + unsigned char mem[NSVG__MEMPAGE_SIZE]; + int size; + struct NSVGmemPage* next; +} NSVGmemPage; + +typedef struct NSVGcachedPaint { + char type; + char spread; + float xform[6]; + unsigned int colors[256]; +} NSVGcachedPaint; + +struct NSVGrasterizer +{ + float px, py; + + float tessTol; + float distTol; + + NSVGedge* edges; + int nedges; + int cedges; + + NSVGpoint* points; + int npoints; + int cpoints; + + NSVGpoint* points2; + int npoints2; + int cpoints2; + + NSVGactiveEdge* freelist; + NSVGmemPage* pages; + NSVGmemPage* curpage; + + unsigned char* scanline; + int cscanline; + + unsigned char* bitmap; + int width, height, stride; +}; + +NSVGrasterizer* nsvgCreateRasterizer() +{ + NSVGrasterizer* r = (NSVGrasterizer*)malloc(sizeof(NSVGrasterizer)); + if (r == NULL) goto error; + memset(r, 0, sizeof(NSVGrasterizer)); + + r->tessTol = 0.25f; + r->distTol = 0.01f; + + return r; + +error: + nsvgDeleteRasterizer(r); + return NULL; +} + +void nsvgDeleteRasterizer(NSVGrasterizer* r) +{ + NSVGmemPage* p; + + if (r == NULL) return; + + p = r->pages; + while (p != NULL) { + NSVGmemPage* next = p->next; + free(p); + p = next; + } + + if (r->edges) free(r->edges); + if (r->points) free(r->points); + if (r->points2) free(r->points2); + if (r->scanline) free(r->scanline); + + free(r); +} + +static NSVGmemPage* nsvg__nextPage(NSVGrasterizer* r, NSVGmemPage* cur) +{ + NSVGmemPage *newp; + + // If using existing chain, return the next page in chain + if (cur != NULL && cur->next != NULL) { + return cur->next; + } + + // Alloc new page + newp = (NSVGmemPage*)malloc(sizeof(NSVGmemPage)); + if (newp == NULL) return NULL; + memset(newp, 0, sizeof(NSVGmemPage)); + + // Add to linked list + if (cur != NULL) + cur->next = newp; + else + r->pages = newp; + + return newp; +} + +static void nsvg__resetPool(NSVGrasterizer* r) +{ + NSVGmemPage* p = r->pages; + while (p != NULL) { + p->size = 0; + p = p->next; + } + r->curpage = r->pages; +} + +static unsigned char* nsvg__alloc(NSVGrasterizer* r, int size) +{ + unsigned char* buf; + if (size > NSVG__MEMPAGE_SIZE) return NULL; + if (r->curpage == NULL || r->curpage->size+size > NSVG__MEMPAGE_SIZE) { + r->curpage = nsvg__nextPage(r, r->curpage); + } + buf = &r->curpage->mem[r->curpage->size]; + r->curpage->size += size; + return buf; +} + +static int nsvg__ptEquals(float x1, float y1, float x2, float y2, float tol) +{ + float dx = x2 - x1; + float dy = y2 - y1; + return dx*dx + dy*dy < tol*tol; +} + +static void nsvg__addPathPoint(NSVGrasterizer* r, float x, float y, int flags) +{ + NSVGpoint* pt; + + if (r->npoints > 0) { + pt = &r->points[r->npoints-1]; + if (nsvg__ptEquals(pt->x,pt->y, x,y, r->distTol)) { + pt->flags = (unsigned char)(pt->flags | flags); + return; + } + } + + if (r->npoints+1 > r->cpoints) { + r->cpoints = r->cpoints > 0 ? r->cpoints * 2 : 64; + r->points = (NSVGpoint*)realloc(r->points, sizeof(NSVGpoint) * r->cpoints); + if (r->points == NULL) return; + } + + pt = &r->points[r->npoints]; + pt->x = x; + pt->y = y; + pt->flags = (unsigned char)flags; + r->npoints++; +} + +static void nsvg__appendPathPoint(NSVGrasterizer* r, NSVGpoint pt) +{ + if (r->npoints+1 > r->cpoints) { + r->cpoints = r->cpoints > 0 ? r->cpoints * 2 : 64; + r->points = (NSVGpoint*)realloc(r->points, sizeof(NSVGpoint) * r->cpoints); + if (r->points == NULL) return; + } + r->points[r->npoints] = pt; + r->npoints++; +} + +static void nsvg__duplicatePoints(NSVGrasterizer* r) +{ + if (r->npoints > r->cpoints2) { + r->cpoints2 = r->npoints; + r->points2 = (NSVGpoint*)realloc(r->points2, sizeof(NSVGpoint) * r->cpoints2); + if (r->points2 == NULL) return; + } + + memcpy(r->points2, r->points, sizeof(NSVGpoint) * r->npoints); + r->npoints2 = r->npoints; +} + +static void nsvg__addEdge(NSVGrasterizer* r, float x0, float y0, float x1, float y1) +{ + NSVGedge* e; + + // Skip horizontal edges + if (y0 == y1) + return; + + if (r->nedges+1 > r->cedges) { + r->cedges = r->cedges > 0 ? r->cedges * 2 : 64; + r->edges = (NSVGedge*)realloc(r->edges, sizeof(NSVGedge) * r->cedges); + if (r->edges == NULL) return; + } + + e = &r->edges[r->nedges]; + r->nedges++; + + if (y0 < y1) { + e->x0 = x0; + e->y0 = y0; + e->x1 = x1; + e->y1 = y1; + e->dir = 1; + } else { + e->x0 = x1; + e->y0 = y1; + e->x1 = x0; + e->y1 = y0; + e->dir = -1; + } +} + +static float nsvg__normalize(float *x, float* y) +{ + float d = sqrtf((*x)*(*x) + (*y)*(*y)); + if (d > 1e-6f) { + float id = 1.0f / d; + *x *= id; + *y *= id; + } + return d; +} + +static float nsvg__absf(float x) { return x < 0 ? -x : x; } + +static void nsvg__flattenCubicBez(NSVGrasterizer* r, + float x1, float y1, float x2, float y2, + float x3, float y3, float x4, float y4, + int level, int type) +{ + float x12,y12,x23,y23,x34,y34,x123,y123,x234,y234,x1234,y1234; + float dx,dy,d2,d3; + + if (level > 10) return; + + x12 = (x1+x2)*0.5f; + y12 = (y1+y2)*0.5f; + x23 = (x2+x3)*0.5f; + y23 = (y2+y3)*0.5f; + x34 = (x3+x4)*0.5f; + y34 = (y3+y4)*0.5f; + x123 = (x12+x23)*0.5f; + y123 = (y12+y23)*0.5f; + + dx = x4 - x1; + dy = y4 - y1; + d2 = nsvg__absf(((x2 - x4) * dy - (y2 - y4) * dx)); + d3 = nsvg__absf(((x3 - x4) * dy - (y3 - y4) * dx)); + + if ((d2 + d3)*(d2 + d3) < r->tessTol * (dx*dx + dy*dy)) { + nsvg__addPathPoint(r, x4, y4, type); + return; + } + + x234 = (x23+x34)*0.5f; + y234 = (y23+y34)*0.5f; + x1234 = (x123+x234)*0.5f; + y1234 = (y123+y234)*0.5f; + + nsvg__flattenCubicBez(r, x1,y1, x12,y12, x123,y123, x1234,y1234, level+1, 0); + nsvg__flattenCubicBez(r, x1234,y1234, x234,y234, x34,y34, x4,y4, level+1, type); +} + +static void nsvg__flattenShape(NSVGrasterizer* r, NSVGshape* shape, float scale) +{ + int i, j; + NSVGpath* path; + + for (path = shape->paths; path != NULL; path = path->next) { + r->npoints = 0; + // Flatten path + nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, 0); + for (i = 0; i < path->npts-1; i += 3) { + float* p = &path->pts[i*2]; + nsvg__flattenCubicBez(r, p[0]*scale,p[1]*scale, p[2]*scale,p[3]*scale, p[4]*scale,p[5]*scale, p[6]*scale,p[7]*scale, 0, 0); + } + // Close path + nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, 0); + // Build edges + for (i = 0, j = r->npoints-1; i < r->npoints; j = i++) + nsvg__addEdge(r, r->points[j].x, r->points[j].y, r->points[i].x, r->points[i].y); + } +} + +enum NSVGpointFlags +{ + NSVG_PT_CORNER = 0x01, + NSVG_PT_BEVEL = 0x02, + NSVG_PT_LEFT = 0x04 +}; + +static void nsvg__initClosed(NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float dx = p1->x - p0->x; + float dy = p1->y - p0->y; + float len = nsvg__normalize(&dx, &dy); + float px = p0->x + dx*len*0.5f, py = p0->y + dy*len*0.5f; + float dlx = dy, dly = -dx; + float lx = px - dlx*w, ly = py - dly*w; + float rx = px + dlx*w, ry = py + dly*w; + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__buttCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int connect) +{ + float w = lineWidth * 0.5f; + float px = p->x, py = p->y; + float dlx = dy, dly = -dx; + float lx = px - dlx*w, ly = py - dly*w; + float rx = px + dlx*w, ry = py + dly*w; + + nsvg__addEdge(r, lx, ly, rx, ry); + + if (connect) { + nsvg__addEdge(r, left->x, left->y, lx, ly); + nsvg__addEdge(r, rx, ry, right->x, right->y); + } + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__squareCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int connect) +{ + float w = lineWidth * 0.5f; + float px = p->x - dx*w, py = p->y - dy*w; + float dlx = dy, dly = -dx; + float lx = px - dlx*w, ly = py - dly*w; + float rx = px + dlx*w, ry = py + dly*w; + + nsvg__addEdge(r, lx, ly, rx, ry); + + if (connect) { + nsvg__addEdge(r, left->x, left->y, lx, ly); + nsvg__addEdge(r, rx, ry, right->x, right->y); + } + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +#ifndef NSVG_PI +#define NSVG_PI (3.14159265358979323846264338327f) +#endif + +static void nsvg__roundCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int ncap, int connect) +{ + int i; + float w = lineWidth * 0.5f; + float px = p->x, py = p->y; + float dlx = dy, dly = -dx; + float lx = 0, ly = 0, rx = 0, ry = 0, prevx = 0, prevy = 0; + + for (i = 0; i < ncap; i++) { + float a = (float)i/(float)(ncap-1)*NSVG_PI; + float ax = cosf(a) * w, ay = sinf(a) * w; + float x = px - dlx*ax - dx*ay; + float y = py - dly*ax - dy*ay; + + if (i > 0) + nsvg__addEdge(r, prevx, prevy, x, y); + + prevx = x; + prevy = y; + + if (i == 0) { + lx = x; ly = y; + } else if (i == ncap-1) { + rx = x; ry = y; + } + } + + if (connect) { + nsvg__addEdge(r, left->x, left->y, lx, ly); + nsvg__addEdge(r, rx, ry, right->x, right->y); + } + + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__bevelJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float dlx0 = p0->dy, dly0 = -p0->dx; + float dlx1 = p1->dy, dly1 = -p1->dx; + float lx0 = p1->x - (dlx0 * w), ly0 = p1->y - (dly0 * w); + float rx0 = p1->x + (dlx0 * w), ry0 = p1->y + (dly0 * w); + float lx1 = p1->x - (dlx1 * w), ly1 = p1->y - (dly1 * w); + float rx1 = p1->x + (dlx1 * w), ry1 = p1->y + (dly1 * w); + + nsvg__addEdge(r, lx0, ly0, left->x, left->y); + nsvg__addEdge(r, lx1, ly1, lx0, ly0); + + nsvg__addEdge(r, right->x, right->y, rx0, ry0); + nsvg__addEdge(r, rx0, ry0, rx1, ry1); + + left->x = lx1; left->y = ly1; + right->x = rx1; right->y = ry1; +} + +static void nsvg__miterJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float dlx0 = p0->dy, dly0 = -p0->dx; + float dlx1 = p1->dy, dly1 = -p1->dx; + float lx0, rx0, lx1, rx1; + float ly0, ry0, ly1, ry1; + + if (p1->flags & NSVG_PT_LEFT) { + lx0 = lx1 = p1->x - p1->dmx * w; + ly0 = ly1 = p1->y - p1->dmy * w; + nsvg__addEdge(r, lx1, ly1, left->x, left->y); + + rx0 = p1->x + (dlx0 * w); + ry0 = p1->y + (dly0 * w); + rx1 = p1->x + (dlx1 * w); + ry1 = p1->y + (dly1 * w); + nsvg__addEdge(r, right->x, right->y, rx0, ry0); + nsvg__addEdge(r, rx0, ry0, rx1, ry1); + } else { + lx0 = p1->x - (dlx0 * w); + ly0 = p1->y - (dly0 * w); + lx1 = p1->x - (dlx1 * w); + ly1 = p1->y - (dly1 * w); + nsvg__addEdge(r, lx0, ly0, left->x, left->y); + nsvg__addEdge(r, lx1, ly1, lx0, ly0); + + rx0 = rx1 = p1->x + p1->dmx * w; + ry0 = ry1 = p1->y + p1->dmy * w; + nsvg__addEdge(r, right->x, right->y, rx1, ry1); + } + + left->x = lx1; left->y = ly1; + right->x = rx1; right->y = ry1; +} + +static void nsvg__roundJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth, int ncap) +{ + int i, n; + float w = lineWidth * 0.5f; + float dlx0 = p0->dy, dly0 = -p0->dx; + float dlx1 = p1->dy, dly1 = -p1->dx; + float a0 = atan2f(dly0, dlx0); + float a1 = atan2f(dly1, dlx1); + float da = a1 - a0; + float lx, ly, rx, ry; + + if (da < NSVG_PI) da += NSVG_PI*2; + if (da > NSVG_PI) da -= NSVG_PI*2; + + n = (int)ceilf((nsvg__absf(da) / NSVG_PI) * (float)ncap); + if (n < 2) n = 2; + if (n > ncap) n = ncap; + + lx = left->x; + ly = left->y; + rx = right->x; + ry = right->y; + + for (i = 0; i < n; i++) { + float u = (float)i/(float)(n-1); + float a = a0 + u*da; + float ax = cosf(a) * w, ay = sinf(a) * w; + float lx1 = p1->x - ax, ly1 = p1->y - ay; + float rx1 = p1->x + ax, ry1 = p1->y + ay; + + nsvg__addEdge(r, lx1, ly1, lx, ly); + nsvg__addEdge(r, rx, ry, rx1, ry1); + + lx = lx1; ly = ly1; + rx = rx1; ry = ry1; + } + + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__straightJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float lx = p1->x - (p1->dmx * w), ly = p1->y - (p1->dmy * w); + float rx = p1->x + (p1->dmx * w), ry = p1->y + (p1->dmy * w); + + nsvg__addEdge(r, lx, ly, left->x, left->y); + nsvg__addEdge(r, right->x, right->y, rx, ry); + + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static int nsvg__curveDivs(float r, float arc, float tol) +{ + float da = acosf(r / (r + tol)) * 2.0f; + int divs = (int)ceilf(arc / da); + if (divs < 2) divs = 2; + return divs; +} + +static void nsvg__expandStroke(NSVGrasterizer* r, NSVGpoint* points, int npoints, int closed, int lineJoin, int lineCap, float lineWidth) +{ + int ncap = nsvg__curveDivs(lineWidth*0.5f, NSVG_PI, r->tessTol); // Calculate divisions per half circle. + NSVGpoint left = {0,0,0,0,0,0,0,0}, right = {0,0,0,0,0,0,0,0}, firstLeft = {0,0,0,0,0,0,0,0}, firstRight = {0,0,0,0,0,0,0,0}; + NSVGpoint* p0, *p1; + int j, s, e; + + // Build stroke edges + if (closed) { + // Looping + p0 = &points[npoints-1]; + p1 = &points[0]; + s = 0; + e = npoints; + } else { + // Add cap + p0 = &points[0]; + p1 = &points[1]; + s = 1; + e = npoints-1; + } + + if (closed) { + nsvg__initClosed(&left, &right, p0, p1, lineWidth); + firstLeft = left; + firstRight = right; + } else { + // Add cap + float dx = p1->x - p0->x; + float dy = p1->y - p0->y; + nsvg__normalize(&dx, &dy); + if (lineCap == NSVG_CAP_BUTT) + nsvg__buttCap(r, &left, &right, p0, dx, dy, lineWidth, 0); + else if (lineCap == NSVG_CAP_SQUARE) + nsvg__squareCap(r, &left, &right, p0, dx, dy, lineWidth, 0); + else if (lineCap == NSVG_CAP_ROUND) + nsvg__roundCap(r, &left, &right, p0, dx, dy, lineWidth, ncap, 0); + } + + for (j = s; j < e; ++j) { + if (p1->flags & NSVG_PT_CORNER) { + if (lineJoin == NSVG_JOIN_ROUND) + nsvg__roundJoin(r, &left, &right, p0, p1, lineWidth, ncap); + else if (lineJoin == NSVG_JOIN_BEVEL || (p1->flags & NSVG_PT_BEVEL)) + nsvg__bevelJoin(r, &left, &right, p0, p1, lineWidth); + else + nsvg__miterJoin(r, &left, &right, p0, p1, lineWidth); + } else { + nsvg__straightJoin(r, &left, &right, p1, lineWidth); + } + p0 = p1++; + } + + if (closed) { + // Loop it + nsvg__addEdge(r, firstLeft.x, firstLeft.y, left.x, left.y); + nsvg__addEdge(r, right.x, right.y, firstRight.x, firstRight.y); + } else { + // Add cap + float dx = p1->x - p0->x; + float dy = p1->y - p0->y; + nsvg__normalize(&dx, &dy); + if (lineCap == NSVG_CAP_BUTT) + nsvg__buttCap(r, &right, &left, p1, -dx, -dy, lineWidth, 1); + else if (lineCap == NSVG_CAP_SQUARE) + nsvg__squareCap(r, &right, &left, p1, -dx, -dy, lineWidth, 1); + else if (lineCap == NSVG_CAP_ROUND) + nsvg__roundCap(r, &right, &left, p1, -dx, -dy, lineWidth, ncap, 1); + } +} + +static void nsvg__prepareStroke(NSVGrasterizer* r, float miterLimit, int lineJoin) +{ + int i, j; + NSVGpoint* p0, *p1; + + p0 = &r->points[r->npoints-1]; + p1 = &r->points[0]; + for (i = 0; i < r->npoints; i++) { + // Calculate segment direction and length + p0->dx = p1->x - p0->x; + p0->dy = p1->y - p0->y; + p0->len = nsvg__normalize(&p0->dx, &p0->dy); + // Advance + p0 = p1++; + } + + // calculate joins + p0 = &r->points[r->npoints-1]; + p1 = &r->points[0]; + for (j = 0; j < r->npoints; j++) { + float dlx0, dly0, dlx1, dly1, dmr2, cross; + dlx0 = p0->dy; + dly0 = -p0->dx; + dlx1 = p1->dy; + dly1 = -p1->dx; + // Calculate extrusions + p1->dmx = (dlx0 + dlx1) * 0.5f; + p1->dmy = (dly0 + dly1) * 0.5f; + dmr2 = p1->dmx*p1->dmx + p1->dmy*p1->dmy; + if (dmr2 > 0.000001f) { + float s2 = 1.0f / dmr2; + if (s2 > 600.0f) { + s2 = 600.0f; + } + p1->dmx *= s2; + p1->dmy *= s2; + } + + // Clear flags, but keep the corner. + p1->flags = (p1->flags & NSVG_PT_CORNER) ? NSVG_PT_CORNER : 0; + + // Keep track of left turns. + cross = p1->dx * p0->dy - p0->dx * p1->dy; + if (cross > 0.0f) + p1->flags |= NSVG_PT_LEFT; + + // Check to see if the corner needs to be beveled. + if (p1->flags & NSVG_PT_CORNER) { + if ((dmr2 * miterLimit*miterLimit) < 1.0f || lineJoin == NSVG_JOIN_BEVEL || lineJoin == NSVG_JOIN_ROUND) { + p1->flags |= NSVG_PT_BEVEL; + } + } + + p0 = p1++; + } +} + +static void nsvg__flattenShapeStroke(NSVGrasterizer* r, NSVGshape* shape, float scale) +{ + int i, j, closed; + NSVGpath* path; + NSVGpoint* p0, *p1; + float miterLimit = shape->miterLimit; + int lineJoin = shape->strokeLineJoin; + int lineCap = shape->strokeLineCap; + float lineWidth = shape->strokeWidth * scale; + + for (path = shape->paths; path != NULL; path = path->next) { + // Flatten path + r->npoints = 0; + nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, NSVG_PT_CORNER); + for (i = 0; i < path->npts-1; i += 3) { + float* p = &path->pts[i*2]; + nsvg__flattenCubicBez(r, p[0]*scale,p[1]*scale, p[2]*scale,p[3]*scale, p[4]*scale,p[5]*scale, p[6]*scale,p[7]*scale, 0, NSVG_PT_CORNER); + } + if (r->npoints < 2) + continue; + + closed = path->closed; + + // If the first and last points are the same, remove the last, mark as closed path. + p0 = &r->points[r->npoints-1]; + p1 = &r->points[0]; + if (nsvg__ptEquals(p0->x,p0->y, p1->x,p1->y, r->distTol)) { + r->npoints--; + p0 = &r->points[r->npoints-1]; + closed = 1; + } + + if (shape->strokeDashCount > 0) { + int idash = 0, dashState = 1; + float totalDist = 0, dashLen, allDashLen, dashOffset; + NSVGpoint cur; + + if (closed) + nsvg__appendPathPoint(r, r->points[0]); + + // Duplicate points -> points2. + nsvg__duplicatePoints(r); + + r->npoints = 0; + cur = r->points2[0]; + nsvg__appendPathPoint(r, cur); + + // Figure out dash offset. + allDashLen = 0; + for (j = 0; j < shape->strokeDashCount; j++) + allDashLen += shape->strokeDashArray[j]; + if (shape->strokeDashCount & 1) + allDashLen *= 2.0f; + // Find location inside pattern + dashOffset = fmodf(shape->strokeDashOffset, allDashLen); + if (dashOffset < 0.0f) + dashOffset += allDashLen; + + while (dashOffset > shape->strokeDashArray[idash]) { + dashOffset -= shape->strokeDashArray[idash]; + idash = (idash + 1) % shape->strokeDashCount; + } + dashLen = (shape->strokeDashArray[idash] - dashOffset) * scale; + + for (j = 1; j < r->npoints2; ) { + float dx = r->points2[j].x - cur.x; + float dy = r->points2[j].y - cur.y; + float dist = sqrtf(dx*dx + dy*dy); + + if ((totalDist + dist) > dashLen) { + // Calculate intermediate point + float d = (dashLen - totalDist) / dist; + float x = cur.x + dx * d; + float y = cur.y + dy * d; + nsvg__addPathPoint(r, x, y, NSVG_PT_CORNER); + + // Stroke + if (r->npoints > 1 && dashState) { + nsvg__prepareStroke(r, miterLimit, lineJoin); + nsvg__expandStroke(r, r->points, r->npoints, 0, lineJoin, lineCap, lineWidth); + } + // Advance dash pattern + dashState = !dashState; + idash = (idash+1) % shape->strokeDashCount; + dashLen = shape->strokeDashArray[idash] * scale; + // Restart + cur.x = x; + cur.y = y; + cur.flags = NSVG_PT_CORNER; + totalDist = 0.0f; + r->npoints = 0; + nsvg__appendPathPoint(r, cur); + } else { + totalDist += dist; + cur = r->points2[j]; + nsvg__appendPathPoint(r, cur); + j++; + } + } + // Stroke any leftover path + if (r->npoints > 1 && dashState) + nsvg__expandStroke(r, r->points, r->npoints, 0, lineJoin, lineCap, lineWidth); + } else { + nsvg__prepareStroke(r, miterLimit, lineJoin); + nsvg__expandStroke(r, r->points, r->npoints, closed, lineJoin, lineCap, lineWidth); + } + } +} + +static int nsvg__cmpEdge(const void *p, const void *q) +{ + const NSVGedge* a = (const NSVGedge*)p; + const NSVGedge* b = (const NSVGedge*)q; + + if (a->y0 < b->y0) return -1; + if (a->y0 > b->y0) return 1; + return 0; +} + + +static NSVGactiveEdge* nsvg__addActive(NSVGrasterizer* r, NSVGedge* e, float startPoint) +{ + NSVGactiveEdge* z; + + if (r->freelist != NULL) { + // Restore from freelist. + z = r->freelist; + r->freelist = z->next; + } else { + // Alloc new edge. + z = (NSVGactiveEdge*)nsvg__alloc(r, sizeof(NSVGactiveEdge)); + if (z == NULL) return NULL; + } + + float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); +// STBTT_assert(e->y0 <= start_point); + // round dx down to avoid going too far + if (dxdy < 0) + z->dx = (int)(-floorf(NSVG__FIX * -dxdy)); + else + z->dx = (int)floorf(NSVG__FIX * dxdy); + z->x = (int)floorf(NSVG__FIX * (e->x0 + dxdy * (startPoint - e->y0))); +// z->x -= off_x * FIX; + z->ey = e->y1; + z->next = 0; + z->dir = e->dir; + + return z; +} + +static void nsvg__freeActive(NSVGrasterizer* r, NSVGactiveEdge* z) +{ + z->next = r->freelist; + r->freelist = z; +} + +static void nsvg__fillScanline(unsigned char* scanline, int len, int x0, int x1, int maxWeight, int* xmin, int* xmax) +{ + int i = x0 >> NSVG__FIXSHIFT; + int j = x1 >> NSVG__FIXSHIFT; + if (i < *xmin) *xmin = i; + if (j > *xmax) *xmax = j; + if (i < len && j >= 0) { + if (i == j) { + // x0,x1 are the same pixel, so compute combined coverage + scanline[i] = (unsigned char)(scanline[i] + ((x1 - x0) * maxWeight >> NSVG__FIXSHIFT)); + } else { + if (i >= 0) // add antialiasing for x0 + scanline[i] = (unsigned char)(scanline[i] + (((NSVG__FIX - (x0 & NSVG__FIXMASK)) * maxWeight) >> NSVG__FIXSHIFT)); + else + i = -1; // clip + + if (j < len) // add antialiasing for x1 + scanline[j] = (unsigned char)(scanline[j] + (((x1 & NSVG__FIXMASK) * maxWeight) >> NSVG__FIXSHIFT)); + else + j = len; // clip + + for (++i; i < j; ++i) // fill pixels between x0 and x1 + scanline[i] = (unsigned char)(scanline[i] + maxWeight); + } + } +} + +// note: this routine clips fills that extend off the edges... ideally this +// wouldn't happen, but it could happen if the truetype glyph bounding boxes +// are wrong, or if the user supplies a too-small bitmap +static void nsvg__fillActiveEdges(unsigned char* scanline, int len, NSVGactiveEdge* e, int maxWeight, int* xmin, int* xmax, char fillRule) +{ + // non-zero winding fill + int x0 = 0, w = 0; + + if (fillRule == NSVG_FILLRULE_NONZERO) { + // Non-zero + while (e != NULL) { + if (w == 0) { + // if we're currently at zero, we need to record the edge start point + x0 = e->x; w += e->dir; + } else { + int x1 = e->x; w += e->dir; + // if we went to zero, we need to draw + if (w == 0) + nsvg__fillScanline(scanline, len, x0, x1, maxWeight, xmin, xmax); + } + e = e->next; + } + } else if (fillRule == NSVG_FILLRULE_EVENODD) { + // Even-odd + while (e != NULL) { + if (w == 0) { + // if we're currently at zero, we need to record the edge start point + x0 = e->x; w = 1; + } else { + int x1 = e->x; w = 0; + nsvg__fillScanline(scanline, len, x0, x1, maxWeight, xmin, xmax); + } + e = e->next; + } + } +} + +static float nsvg__clampf(float a, float mn, float mx) { return a < mn ? mn : (a > mx ? mx : a); } + +static unsigned int nsvg__RGBA(unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + return (r) | (g << 8) | (b << 16) | (a << 24); +} + +static unsigned int nsvg__lerpRGBA(unsigned int c0, unsigned int c1, float u) +{ + int iu = (int)(nsvg__clampf(u, 0.0f, 1.0f) * 256.0f); + int r = (((c0) & 0xff)*(256-iu) + (((c1) & 0xff)*iu)) >> 8; + int g = (((c0>>8) & 0xff)*(256-iu) + (((c1>>8) & 0xff)*iu)) >> 8; + int b = (((c0>>16) & 0xff)*(256-iu) + (((c1>>16) & 0xff)*iu)) >> 8; + int a = (((c0>>24) & 0xff)*(256-iu) + (((c1>>24) & 0xff)*iu)) >> 8; + return nsvg__RGBA((unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a); +} + +static unsigned int nsvg__applyOpacity(unsigned int c, float u) +{ + int iu = (int)(nsvg__clampf(u, 0.0f, 1.0f) * 256.0f); + int r = (c) & 0xff; + int g = (c>>8) & 0xff; + int b = (c>>16) & 0xff; + int a = (((c>>24) & 0xff)*iu) >> 8; + return nsvg__RGBA((unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a); +} + +static inline int nsvg__div255(int x) +{ + return ((x+1) * 257) >> 16; +} + +static void nsvg__scanlineSolid(unsigned char* dst, int count, unsigned char* cover, int x, int y, + float tx, float ty, float scale, NSVGcachedPaint* cache) +{ + + if (cache->type == NSVG_PAINT_COLOR) { + int i, cr, cg, cb, ca; + cr = cache->colors[0] & 0xff; + cg = (cache->colors[0] >> 8) & 0xff; + cb = (cache->colors[0] >> 16) & 0xff; + ca = (cache->colors[0] >> 24) & 0xff; + + for (i = 0; i < count; i++) { + int r,g,b; + int a = nsvg__div255((int)cover[0] * ca); + int ia = 255 - a; + // Premultiply + r = nsvg__div255(cr * a); + g = nsvg__div255(cg * a); + b = nsvg__div255(cb * a); + + // Blend over + r += nsvg__div255(ia * (int)dst[0]); + g += nsvg__div255(ia * (int)dst[1]); + b += nsvg__div255(ia * (int)dst[2]); + a += nsvg__div255(ia * (int)dst[3]); + + dst[0] = (unsigned char)r; + dst[1] = (unsigned char)g; + dst[2] = (unsigned char)b; + dst[3] = (unsigned char)a; + + cover++; + dst += 4; + } + } else if (cache->type == NSVG_PAINT_LINEAR_GRADIENT) { + // TODO: spread modes. + // TODO: plenty of opportunities to optimize. + float fx, fy, dx, gy; + float* t = cache->xform; + int i, cr, cg, cb, ca; + unsigned int c; + + fx = ((float)x - tx) / scale; + fy = ((float)y - ty) / scale; + dx = 1.0f / scale; + + for (i = 0; i < count; i++) { + int r,g,b,a,ia; + gy = fx*t[1] + fy*t[3] + t[5]; + c = cache->colors[(int)nsvg__clampf(gy*255.0f, 0, 255.0f)]; + cr = (c) & 0xff; + cg = (c >> 8) & 0xff; + cb = (c >> 16) & 0xff; + ca = (c >> 24) & 0xff; + + a = nsvg__div255((int)cover[0] * ca); + ia = 255 - a; + + // Premultiply + r = nsvg__div255(cr * a); + g = nsvg__div255(cg * a); + b = nsvg__div255(cb * a); + + // Blend over + r += nsvg__div255(ia * (int)dst[0]); + g += nsvg__div255(ia * (int)dst[1]); + b += nsvg__div255(ia * (int)dst[2]); + a += nsvg__div255(ia * (int)dst[3]); + + dst[0] = (unsigned char)r; + dst[1] = (unsigned char)g; + dst[2] = (unsigned char)b; + dst[3] = (unsigned char)a; + + cover++; + dst += 4; + fx += dx; + } + } else if (cache->type == NSVG_PAINT_RADIAL_GRADIENT) { + // TODO: spread modes. + // TODO: plenty of opportunities to optimize. + // TODO: focus (fx,fy) + float fx, fy, dx, gx, gy, gd; + float* t = cache->xform; + int i, cr, cg, cb, ca; + unsigned int c; + + fx = ((float)x - tx) / scale; + fy = ((float)y - ty) / scale; + dx = 1.0f / scale; + + for (i = 0; i < count; i++) { + int r,g,b,a,ia; + gx = fx*t[0] + fy*t[2] + t[4]; + gy = fx*t[1] + fy*t[3] + t[5]; + gd = sqrtf(gx*gx + gy*gy); + c = cache->colors[(int)nsvg__clampf(gd*255.0f, 0, 255.0f)]; + cr = (c) & 0xff; + cg = (c >> 8) & 0xff; + cb = (c >> 16) & 0xff; + ca = (c >> 24) & 0xff; + + a = nsvg__div255((int)cover[0] * ca); + ia = 255 - a; + + // Premultiply + r = nsvg__div255(cr * a); + g = nsvg__div255(cg * a); + b = nsvg__div255(cb * a); + + // Blend over + r += nsvg__div255(ia * (int)dst[0]); + g += nsvg__div255(ia * (int)dst[1]); + b += nsvg__div255(ia * (int)dst[2]); + a += nsvg__div255(ia * (int)dst[3]); + + dst[0] = (unsigned char)r; + dst[1] = (unsigned char)g; + dst[2] = (unsigned char)b; + dst[3] = (unsigned char)a; + + cover++; + dst += 4; + fx += dx; + } + } +} + +static void nsvg__rasterizeSortedEdges(NSVGrasterizer *r, float tx, float ty, float scale, NSVGcachedPaint* cache, char fillRule) +{ + NSVGactiveEdge *active = NULL; + int y, s; + int e = 0; + int maxWeight = (255 / NSVG__SUBSAMPLES); // weight per vertical scanline + int xmin, xmax; + + for (y = 0; y < r->height; y++) { + memset(r->scanline, 0, r->width); + xmin = r->width; + xmax = 0; + for (s = 0; s < NSVG__SUBSAMPLES; ++s) { + // find center of pixel for this scanline + float scany = (float)(y*NSVG__SUBSAMPLES + s) + 0.5f; + NSVGactiveEdge **step = &active; + + // update all active edges; + // remove all active edges that terminate before the center of this scanline + while (*step) { + NSVGactiveEdge *z = *step; + if (z->ey <= scany) { + *step = z->next; // delete from list +// NSVG__assert(z->valid); + nsvg__freeActive(r, z); + } else { + z->x += z->dx; // advance to position for current scanline + step = &((*step)->next); // advance through list + } + } + + // resort the list if needed + for (;;) { + int changed = 0; + step = &active; + while (*step && (*step)->next) { + if ((*step)->x > (*step)->next->x) { + NSVGactiveEdge* t = *step; + NSVGactiveEdge* q = t->next; + t->next = q->next; + q->next = t; + *step = q; + changed = 1; + } + step = &(*step)->next; + } + if (!changed) break; + } + + // insert all edges that start before the center of this scanline -- omit ones that also end on this scanline + while (e < r->nedges && r->edges[e].y0 <= scany) { + if (r->edges[e].y1 > scany) { + NSVGactiveEdge* z = nsvg__addActive(r, &r->edges[e], scany); + if (z == NULL) break; + // find insertion point + if (active == NULL) { + active = z; + } else if (z->x < active->x) { + // insert at front + z->next = active; + active = z; + } else { + // find thing to insert AFTER + NSVGactiveEdge* p = active; + while (p->next && p->next->x < z->x) + p = p->next; + // at this point, p->next->x is NOT < z->x + z->next = p->next; + p->next = z; + } + } + e++; + } + + // now process all active edges in non-zero fashion + if (active != NULL) + nsvg__fillActiveEdges(r->scanline, r->width, active, maxWeight, &xmin, &xmax, fillRule); + } + // Blit + if (xmin < 0) xmin = 0; + if (xmax > r->width-1) xmax = r->width-1; + if (xmin <= xmax) { + nsvg__scanlineSolid(&r->bitmap[y * r->stride] + xmin*4, xmax-xmin+1, &r->scanline[xmin], xmin, y, tx,ty, scale, cache); + } + } + +} + +static void nsvg__unpremultiplyAlpha(unsigned char* image, int w, int h, int stride) +{ + int x,y; + + // Unpremultiply + for (y = 0; y < h; y++) { + unsigned char *row = &image[y*stride]; + for (x = 0; x < w; x++) { + int r = row[0], g = row[1], b = row[2], a = row[3]; + if (a != 0) { + row[0] = (unsigned char)(r*255/a); + row[1] = (unsigned char)(g*255/a); + row[2] = (unsigned char)(b*255/a); + } + row += 4; + } + } + + // Defringe + for (y = 0; y < h; y++) { + unsigned char *row = &image[y*stride]; + for (x = 0; x < w; x++) { + int r = 0, g = 0, b = 0, a = row[3], n = 0; + if (a == 0) { + if (x-1 > 0 && row[-1] != 0) { + r += row[-4]; + g += row[-3]; + b += row[-2]; + n++; + } + if (x+1 < w && row[7] != 0) { + r += row[4]; + g += row[5]; + b += row[6]; + n++; + } + if (y-1 > 0 && row[-stride+3] != 0) { + r += row[-stride]; + g += row[-stride+1]; + b += row[-stride+2]; + n++; + } + if (y+1 < h && row[stride+3] != 0) { + r += row[stride]; + g += row[stride+1]; + b += row[stride+2]; + n++; + } + if (n > 0) { + row[0] = (unsigned char)(r/n); + row[1] = (unsigned char)(g/n); + row[2] = (unsigned char)(b/n); + } + } + row += 4; + } + } +} + + +static void nsvg__initPaint(NSVGcachedPaint* cache, NSVGpaint* paint, float opacity) +{ + int i, j; + NSVGgradient* grad; + + cache->type = paint->type; + + if (paint->type == NSVG_PAINT_COLOR) { + cache->colors[0] = nsvg__applyOpacity(paint->color, opacity); + return; + } + + grad = paint->gradient; + + cache->spread = grad->spread; + memcpy(cache->xform, grad->xform, sizeof(float)*6); + + if (grad->nstops == 0) { + for (i = 0; i < 256; i++) + cache->colors[i] = 0; + } if (grad->nstops == 1) { + for (i = 0; i < 256; i++) + cache->colors[i] = nsvg__applyOpacity(grad->stops[i].color, opacity); + } else { + unsigned int ca, cb = 0; + float ua, ub, du, u; + int ia, ib, count; + + ca = nsvg__applyOpacity(grad->stops[0].color, opacity); + ua = nsvg__clampf(grad->stops[0].offset, 0, 1); + ub = nsvg__clampf(grad->stops[grad->nstops-1].offset, ua, 1); + ia = (int)(ua * 255.0f); + ib = (int)(ub * 255.0f); + for (i = 0; i < ia; i++) { + cache->colors[i] = ca; + } + + for (i = 0; i < grad->nstops-1; i++) { + ca = nsvg__applyOpacity(grad->stops[i].color, opacity); + cb = nsvg__applyOpacity(grad->stops[i+1].color, opacity); + ua = nsvg__clampf(grad->stops[i].offset, 0, 1); + ub = nsvg__clampf(grad->stops[i+1].offset, 0, 1); + ia = (int)(ua * 255.0f); + ib = (int)(ub * 255.0f); + count = ib - ia; + if (count <= 0) continue; + u = 0; + du = 1.0f / (float)count; + for (j = 0; j < count; j++) { + cache->colors[ia+j] = nsvg__lerpRGBA(ca,cb,u); + u += du; + } + } + + for (i = ib; i < 256; i++) + cache->colors[i] = cb; + } + +} + +/* +static void dumpEdges(NSVGrasterizer* r, const char* name) +{ + float xmin = 0, xmax = 0, ymin = 0, ymax = 0; + NSVGedge *e = NULL; + int i; + if (r->nedges == 0) return; + FILE* fp = fopen(name, "w"); + if (fp == NULL) return; + + xmin = xmax = r->edges[0].x0; + ymin = ymax = r->edges[0].y0; + for (i = 0; i < r->nedges; i++) { + e = &r->edges[i]; + xmin = nsvg__minf(xmin, e->x0); + xmin = nsvg__minf(xmin, e->x1); + xmax = nsvg__maxf(xmax, e->x0); + xmax = nsvg__maxf(xmax, e->x1); + ymin = nsvg__minf(ymin, e->y0); + ymin = nsvg__minf(ymin, e->y1); + ymax = nsvg__maxf(ymax, e->y0); + ymax = nsvg__maxf(ymax, e->y1); + } + + fprintf(fp, "<svg viewBox=\"%f %f %f %f\" xmlns=\"http://www.w3.org/2000/svg\">", xmin, ymin, (xmax - xmin), (ymax - ymin)); + + for (i = 0; i < r->nedges; i++) { + e = &r->edges[i]; + fprintf(fp ,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" style=\"stroke:#000;\" />", e->x0,e->y0, e->x1,e->y1); + } + + for (i = 0; i < r->npoints; i++) { + if (i+1 < r->npoints) + fprintf(fp ,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" style=\"stroke:#f00;\" />", r->points[i].x, r->points[i].y, r->points[i+1].x, r->points[i+1].y); + fprintf(fp ,"<circle cx=\"%f\" cy=\"%f\" r=\"1\" style=\"fill:%s;\" />", r->points[i].x, r->points[i].y, r->points[i].flags == 0 ? "#f00" : "#0f0"); + } + + fprintf(fp, "</svg>"); + fclose(fp); +} +*/ + +void nsvgRasterize(NSVGrasterizer* r, + NSVGimage* image, float tx, float ty, float scale, + unsigned char* dst, int w, int h, int stride) +{ + NSVGshape *shape = NULL; + NSVGedge *e = NULL; + NSVGcachedPaint cache; + int i; + + r->bitmap = dst; + r->width = w; + r->height = h; + r->stride = stride; + + if (w > r->cscanline) { + r->cscanline = w; + r->scanline = (unsigned char*)realloc(r->scanline, w); + if (r->scanline == NULL) return; + } + + for (i = 0; i < h; i++) + memset(&dst[i*stride], 0, w*4); + + for (shape = image->shapes; shape != NULL; shape = shape->next) { + if (!(shape->flags & NSVG_FLAGS_VISIBLE)) + continue; + + if (shape->fill.type != NSVG_PAINT_NONE) { + nsvg__resetPool(r); + r->freelist = NULL; + r->nedges = 0; + + nsvg__flattenShape(r, shape, scale); + + // Scale and translate edges + for (i = 0; i < r->nedges; i++) { + e = &r->edges[i]; + e->x0 = tx + e->x0; + e->y0 = (ty + e->y0) * NSVG__SUBSAMPLES; + e->x1 = tx + e->x1; + e->y1 = (ty + e->y1) * NSVG__SUBSAMPLES; + } + + // Rasterize edges + qsort(r->edges, r->nedges, sizeof(NSVGedge), nsvg__cmpEdge); + + // now, traverse the scanlines and find the intersections on each scanline, use non-zero rule + nsvg__initPaint(&cache, &shape->fill, shape->opacity); + + nsvg__rasterizeSortedEdges(r, tx,ty,scale, &cache, shape->fillRule); + } + if (shape->stroke.type != NSVG_PAINT_NONE && (shape->strokeWidth * scale) > 0.01f) { + nsvg__resetPool(r); + r->freelist = NULL; + r->nedges = 0; + + nsvg__flattenShapeStroke(r, shape, scale); + +// dumpEdges(r, "edge.svg"); + + // Scale and translate edges + for (i = 0; i < r->nedges; i++) { + e = &r->edges[i]; + e->x0 = tx + e->x0; + e->y0 = (ty + e->y0) * NSVG__SUBSAMPLES; + e->x1 = tx + e->x1; + e->y1 = (ty + e->y1) * NSVG__SUBSAMPLES; + } + + // Rasterize edges + qsort(r->edges, r->nedges, sizeof(NSVGedge), nsvg__cmpEdge); + + // now, traverse the scanlines and find the intersections on each scanline, use non-zero rule + nsvg__initPaint(&cache, &shape->stroke, shape->opacity); + + nsvg__rasterizeSortedEdges(r, tx,ty,scale, &cache, NSVG_FILLRULE_NONZERO); + } + } + + nsvg__unpremultiplyAlpha(dst, w, h, stride); + + r->bitmap = NULL; + r->width = 0; + r->height = 0; + r->stride = 0; +} + +#endif |