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-rw-r--r--modules/noise/noise.cpp141
1 files changed, 77 insertions, 64 deletions
diff --git a/modules/noise/noise.cpp b/modules/noise/noise.cpp
index d14b63f7c8..e95788b863 100644
--- a/modules/noise/noise.cpp
+++ b/modules/noise/noise.cpp
@@ -1,44 +1,46 @@
-/*************************************************************************/
-/* noise.cpp */
-/*************************************************************************/
-/* This file is part of: */
-/* GODOT ENGINE */
-/* https://godotengine.org */
-/*************************************************************************/
-/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
-/* Copyright (c) 2014-2022 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. */
-/*************************************************************************/
+/**************************************************************************/
+/* noise.cpp */
+/**************************************************************************/
+/* This file is part of: */
+/* GODOT ENGINE */
+/* https://godotengine.org */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
+/* */
+/* 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 "noise.h"
-Ref<Image> Noise::get_seamless_image(int p_width, int p_height, bool p_invert, bool p_in_3d_space, real_t p_blend_skirt) const {
+#include <float.h>
+
+Ref<Image> Noise::get_seamless_image(int p_width, int p_height, bool p_invert, bool p_in_3d_space, real_t p_blend_skirt, bool p_normalize) const {
ERR_FAIL_COND_V(p_width <= 0 || p_height <= 0, Ref<Image>());
- int skirt_width = p_width * p_blend_skirt;
- int skirt_height = p_height * p_blend_skirt;
+ int skirt_width = MAX(1, p_width * p_blend_skirt);
+ int skirt_height = MAX(1, p_height * p_blend_skirt);
int src_width = p_width + skirt_width;
int src_height = p_height + skirt_height;
- Ref<Image> src = get_image(src_width, src_height, p_invert, p_in_3d_space);
+ Ref<Image> src = get_image(src_width, src_height, p_invert, p_in_3d_space, p_normalize);
bool grayscale = (src->get_format() == Image::FORMAT_L8);
if (grayscale) {
return _generate_seamless_image<uint8_t>(src, p_width, p_height, p_invert, p_blend_skirt);
@@ -56,7 +58,7 @@ uint8_t Noise::_alpha_blend<uint8_t>(uint8_t p_bg, uint8_t p_fg, int p_alpha) co
return (uint8_t)((alpha * p_fg + inv_alpha * p_bg) >> 8);
}
-Ref<Image> Noise::get_image(int p_width, int p_height, bool p_invert, bool p_in_3d_space) const {
+Ref<Image> Noise::get_image(int p_width, int p_height, bool p_invert, bool p_in_3d_space, bool p_normalize) const {
ERR_FAIL_COND_V(p_width <= 0 || p_height <= 0, Ref<Image>());
Vector<uint8_t> data;
@@ -64,38 +66,49 @@ Ref<Image> Noise::get_image(int p_width, int p_height, bool p_invert, bool p_in_
uint8_t *wd8 = data.ptrw();
- // Get all values and identify min/max values.
- Vector<real_t> values;
- values.resize(p_width * p_height);
- real_t min_val = 1000;
- real_t max_val = -1000;
-
- for (int y = 0, i = 0; y < p_height; y++) {
- for (int x = 0; x < p_width; x++, i++) {
- values.set(i, p_in_3d_space ? get_noise_3d(x, y, 0.0) : get_noise_2d(x, y));
- if (values[i] > max_val) {
- max_val = values[i];
- }
- if (values[i] < min_val) {
- min_val = values[i];
+ if (p_normalize) {
+ // Get all values and identify min/max values.
+ Vector<real_t> values;
+ values.resize(p_width * p_height);
+ real_t min_val = FLT_MAX;
+ real_t max_val = -FLT_MAX;
+ for (int y = 0, i = 0; y < p_height; y++) {
+ for (int x = 0; x < p_width; x++, i++) {
+ values.set(i, p_in_3d_space ? get_noise_3d(x, y, 0.0) : get_noise_2d(x, y));
+ if (values[i] > max_val) {
+ max_val = values[i];
+ }
+ if (values[i] < min_val) {
+ min_val = values[i];
+ }
}
}
- }
-
- // Normalize values and write to texture.
- uint8_t value;
- for (int i = 0, x = 0; i < p_height; i++) {
- for (int j = 0; j < p_width; j++, x++) {
- if (max_val == min_val) {
- value = 0;
- } else {
- value = uint8_t(CLAMP((values[x] - min_val) / (max_val - min_val) * 255.f, 0, 255));
+ // Normalize values and write to texture.
+ uint8_t ivalue;
+ for (int i = 0, x = 0; i < p_height; i++) {
+ for (int j = 0; j < p_width; j++, x++) {
+ if (max_val == min_val) {
+ ivalue = 0;
+ } else {
+ ivalue = static_cast<uint8_t>(CLAMP((values[x] - min_val) / (max_val - min_val) * 255.f, 0, 255));
+ }
+
+ if (p_invert) {
+ ivalue = 255 - ivalue;
+ }
+
+ wd8[x] = ivalue;
}
- if (p_invert) {
- value = 255 - value;
+ }
+ } else {
+ // Without normalization, the expected range of the noise function is [-1, 1].
+ uint8_t ivalue;
+ for (int y = 0, i = 0; y < p_height; y++) {
+ for (int x = 0; x < p_width; x++, i++) {
+ float value = (p_in_3d_space ? get_noise_3d(x, y, 0.0) : get_noise_2d(x, y));
+ ivalue = static_cast<uint8_t>(CLAMP(value * 127.5f + 127.5f, 0.0f, 255.0f));
+ wd8[i] = p_invert ? (255 - ivalue) : ivalue;
}
-
- wd8[x] = value;
}
}
@@ -111,6 +124,6 @@ void Noise::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_noise_3dv", "v"), &Noise::get_noise_3dv);
// Textures.
- ClassDB::bind_method(D_METHOD("get_image", "width", "height", "invert", "in_3d_space"), &Noise::get_image, DEFVAL(false), DEFVAL(false));
- ClassDB::bind_method(D_METHOD("get_seamless_image", "width", "height", "invert", "in_3d_space", "skirt"), &Noise::get_seamless_image, DEFVAL(false), DEFVAL(false), DEFVAL(0.1));
+ ClassDB::bind_method(D_METHOD("get_image", "width", "height", "invert", "in_3d_space", "normalize"), &Noise::get_image, DEFVAL(false), DEFVAL(false), DEFVAL(true));
+ ClassDB::bind_method(D_METHOD("get_seamless_image", "width", "height", "invert", "in_3d_space", "skirt", "normalize"), &Noise::get_seamless_image, DEFVAL(false), DEFVAL(false), DEFVAL(0.1), DEFVAL(true));
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-31 13:02:08 +0000