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/*************************************************************************/
/* line_builder.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 LINE_BUILDER_H
#define LINE_BUILDER_H
#include "core/math/color.h"
#include "core/math/vector2.h"
#include "line_2d.h"
#include "scene/resources/gradient.h"
class LineBuilder {
public:
// TODO Move in a struct and reference it
// Input
Vector<Vector2> points;
Line2D::LineJointMode joint_mode = Line2D::LINE_JOINT_SHARP;
Line2D::LineCapMode begin_cap_mode = Line2D::LINE_CAP_NONE;
Line2D::LineCapMode end_cap_mode = Line2D::LINE_CAP_NONE;
float width = 10.0;
Curve *curve = nullptr;
Color default_color = Color(0.4, 0.5, 1);
Gradient *gradient = nullptr;
Line2D::LineTextureMode texture_mode = Line2D::LineTextureMode::LINE_TEXTURE_NONE;
float sharp_limit = 2.f;
int round_precision = 8;
float tile_aspect = 1.f; // w/h
// TODO offset_joints option (offers alternative implementation of round joints)
// TODO Move in a struct and reference it
// Output
Vector<Vector2> vertices;
Vector<Color> colors;
Vector<Vector2> uvs;
Vector<int> indices;
LineBuilder();
void build();
void clear_output();
private:
enum Orientation {
UP = 0,
DOWN = 1
};
// Triangle-strip methods
void strip_begin(Vector2 up, Vector2 down, Color color, float uvx);
void strip_new_quad(Vector2 up, Vector2 down, Color color, float uvx);
void strip_add_quad(Vector2 up, Vector2 down, Color color, float uvx);
void strip_add_tri(Vector2 up, Orientation orientation);
void strip_add_arc(Vector2 center, float angle_delta, Orientation orientation);
void new_arc(Vector2 center, Vector2 vbegin, float angle_delta, Color color, Rect2 uv_rect);
private:
bool _interpolate_color = false;
int _last_index[2] = {}; // Index of last up and down vertices of the strip
};
#endif // LINE_BUILDER_H
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