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WARNING: BREAKING: REMOVED: GenImagePerlinNoise()

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raylib was using `stb_perlin.h` library to generate perlin noise, it seems that recently this library has been flagged as it could be infringing some algorythm patent. For security, it has been removed from raylib.
This commit is contained in:
raysan5
2021-10-06 21:20:36 +02:00
parent 700d448d75
commit 3e71232a04
4 changed files with 4 additions and 478 deletions
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41
src/rtextures.c
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@@ -141,11 +141,6 @@
#include "external/stb_image_resize.h" // Required for: stbir_resize_uint8() [ImageResize()]
#endif
#if defined(SUPPORT_IMAGE_GENERATION)
#define STB_PERLIN_IMPLEMENTATION
#include "external/stb_perlin.h" // Required for: stb_perlin_fbm_noise3
#endif
//----------------------------------------------------------------------------------
// Defines and Macros
//----------------------------------------------------------------------------------
@@ -722,42 +717,6 @@ Image GenImageWhiteNoise(int width, int height, float factor)
return image;
}
// Generate image: perlin noise
Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float scale)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
float nx = (float)(x + offsetX)*scale/(float)width;
float ny = (float)(y + offsetY)*scale/(float)height;
// Typical values to start playing with:
// lacunarity = ~2.0 -- spacing between successive octaves (use exactly 2.0 for wrapping output)
// gain = 0.5 -- relative weighting applied to each successive octave
// octaves = 6 -- number of "octaves" of noise3() to sum
// NOTE: We need to translate the data from [-1..1] to [0..1]
float p = (stb_perlin_fbm_noise3(nx, ny, 1.0f, 2.0f, 0.5f, 6) + 1.0f)/2.0f;
int intensity = (int)(p*255.0f);
pixels[y*width + x] = (Color){ intensity, intensity, intensity, 255 };
}
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
// Generate image: cellular algorithm. Bigger tileSize means bigger cells
Image GenImageCellular(int width, int height, int tileSize)
{