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Combine all GenImageXNoise functions into one function (GenImageNoise)

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dane_madsen 2023-05-21 16:11:20 +10:00
parent 36bf4372b8
commit 5ad0fdbc05
9 changed files with 605 additions and 419 deletions
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105
parser/output/raylib_api.json
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@ -15,7 +15,7 @@
{ {
"name": "RAYLIB_VERSION_MINOR", "name": "RAYLIB_VERSION_MINOR",
"type": "INT", "type": "INT",
"value": 5, "value": 6,
"description": "" "description": ""
}, },
{ {
@ -27,7 +27,7 @@
{ {
"name": "RAYLIB_VERSION", "name": "RAYLIB_VERSION",
"type": "STRING", "type": "STRING",
"value": "4.5", "value": "4.6-dev",
"description": "" "description": ""
}, },
{ {
@ -1032,6 +1032,11 @@
"type": "Transform **", "type": "Transform **",
"name": "framePoses", "name": "framePoses",
"description": "Poses array by frame" "description": "Poses array by frame"
},
{
"type": "char[32]",
"name": "name",
"description": "Animation name"
} }
] ]
}, },
@ -2545,6 +2550,63 @@
} }
] ]
}, },
{
"name": "NoiseType",
"description": "Noise types",
"values": [
{
"name": "NOISE_VALUE",
"value": 0,
"description": "Value noise"
},
{
"name": "NOISE_WHITE",
"value": 1,
"description": "White noise"
},
{
"name": "NOISE_PERLIN",
"value": 2,
"description": "Perlin noise"
},
{
"name": "NOISE_LAYERED_PERLIN",
"value": 3,
"description": "Layered perlin noise"
}
]
},
{
"name": "GradientType",
"description": "Gradient types",
"values": [
{
"name": "GRADIENT_COLOR",
"value": 0,
"description": "Color gradient"
},
{
"name": "GRADIENT_LINEAR",
"value": 1,
"description": "Horizontal gradient"
},
{
"name": "GRADIENT_RADIAL",
"value": 2,
"description": "Vertical gradient"
},
{
"name": "GRADIENT_SQUARE",
"value": 3,
"description": "Square gradient"
},
{
"name": "GRADIENT_CONICAL",
"value": 4,
"description": "Conical gradient"
}
]
},
{ {
"name": "PixelFormat", "name": "PixelFormat",
"description": "Pixel formats", "description": "Pixel formats",
@ -6340,10 +6402,14 @@
] ]
}, },
{ {
"name": "GenImageWhiteNoise", "name": "GenImageNoise",
"description": "Generate image: white noise", "description": "Generate image: noise",
"returnType": "Image", "returnType": "Image",
"params": [ "params": [
{
"type": "NoiseType",
"name": "type"
},
{ {
"type": "int", "type": "int",
"name": "width" "name": "width"
@ -6353,35 +6419,8 @@
"name": "height" "name": "height"
}, },
{ {
"type": "float", "type": "...",
"name": "factor" "name": "args"
}
]
},
{
"name": "GenImagePerlinNoise",
"description": "Generate image: perlin noise",
"returnType": "Image",
"params": [
{
"type": "int",
"name": "width"
},
{
"type": "int",
"name": "height"
},
{
"type": "int",
"name": "offsetX"
},
{
"type": "int",
"name": "offsetY"
},
{
"type": "float",
"name": "scale"
} }
] ]
}, },

85
parser/output/raylib_api.lua
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@ -15,7 +15,7 @@ return {
{ {
name = "RAYLIB_VERSION_MINOR", name = "RAYLIB_VERSION_MINOR",
type = "INT", type = "INT",
value = 5, value = 6,
description = "" description = ""
}, },
{ {
@ -27,7 +27,7 @@ return {
{ {
name = "RAYLIB_VERSION", name = "RAYLIB_VERSION",
type = "STRING", type = "STRING",
value = "4.5", value = "4.6-dev",
description = "" description = ""
}, },
{ {
@ -1032,6 +1032,11 @@ return {
type = "Transform **", type = "Transform **",
name = "framePoses", name = "framePoses",
description = "Poses array by frame" description = "Poses array by frame"
},
{
type = "char[32]",
name = "name",
description = "Animation name"
} }
} }
}, },
@ -2545,6 +2550,63 @@ return {
} }
} }
}, },
{
name = "NoiseType",
description = "Noise types",
values = {
{
name = "NOISE_VALUE",
value = 0,
description = "Value noise"
},
{
name = "NOISE_WHITE",
value = 1,
description = "White noise"
},
{
name = "NOISE_PERLIN",
value = 2,
description = "Perlin noise"
},
{
name = "NOISE_LAYERED_PERLIN",
value = 3,
description = "Layered perlin noise"
}
}
},
{
name = "GradientType",
description = "Gradient types",
values = {
{
name = "GRADIENT_COLOR",
value = 0,
description = "Color gradient"
},
{
name = "GRADIENT_LINEAR",
value = 1,
description = "Horizontal gradient"
},
{
name = "GRADIENT_RADIAL",
value = 2,
description = "Vertical gradient"
},
{
name = "GRADIENT_SQUARE",
value = 3,
description = "Square gradient"
},
{
name = "GRADIENT_CONICAL",
value = 4,
description = "Conical gradient"
}
}
},
{ {
name = "PixelFormat", name = "PixelFormat",
description = "Pixel formats", description = "Pixel formats",
@ -5038,25 +5100,14 @@ return {
} }
}, },
{ {
name = "GenImageWhiteNoise", name = "GenImageNoise",
description = "Generate image: white noise", description = "Generate image: noise",
returnType = "Image", returnType = "Image",
params = { params = {
{type = "NoiseType", name = "type"},
{type = "int", name = "width"}, {type = "int", name = "width"},
{type = "int", name = "height"}, {type = "int", name = "height"},
{type = "float", name = "factor"} {type = "...", name = "args"}
}
},
{
name = "GenImagePerlinNoise",
description = "Generate image: perlin noise",
returnType = "Image",
params = {
{type = "int", name = "width"},
{type = "int", name = "height"},
{type = "int", name = "offsetX"},
{type = "int", name = "offsetY"},
{type = "float", name = "scale"}
} }
}, },
{ {

600
parser/output/raylib_api.txt
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36
parser/output/raylib_api.xml
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@ -3,9 +3,9 @@
<Defines count="56"> <Defines count="56">
<Define name="RAYLIB_H" type="GUARD" value="" desc="" /> <Define name="RAYLIB_H" type="GUARD" value="" desc="" />
<Define name="RAYLIB_VERSION_MAJOR" type="INT" value="4" desc="" /> <Define name="RAYLIB_VERSION_MAJOR" type="INT" value="4" desc="" />
<Define name="RAYLIB_VERSION_MINOR" type="INT" value="5" desc="" /> <Define name="RAYLIB_VERSION_MINOR" type="INT" value="6" desc="" />
<Define name="RAYLIB_VERSION_PATCH" type="INT" value="0" desc="" /> <Define name="RAYLIB_VERSION_PATCH" type="INT" value="0" desc="" />
<Define name="RAYLIB_VERSION" type="STRING" value="4.5" desc="" /> <Define name="RAYLIB_VERSION" type="STRING" value="4.6-dev" desc="" />
<Define name="__declspec(x)" type="MACRO" value="__attribute__((x))" desc="" /> <Define name="__declspec(x)" type="MACRO" value="__attribute__((x))" desc="" />
<Define name="RLAPI" type="UNKNOWN" value="__declspec(dllexport)" desc="We are building the library as a Win32 shared library (.dll)" /> <Define name="RLAPI" type="UNKNOWN" value="__declspec(dllexport)" desc="We are building the library as a Win32 shared library (.dll)" />
<Define name="PI" type="FLOAT" value="3.14159265358979323846" desc="" /> <Define name="PI" type="FLOAT" value="3.14159265358979323846" desc="" />
@ -210,11 +210,12 @@
<Field type="BoneInfo *" name="bones" desc="Bones information (skeleton)" /> <Field type="BoneInfo *" name="bones" desc="Bones information (skeleton)" />
<Field type="Transform *" name="bindPose" desc="Bones base transformation (pose)" /> <Field type="Transform *" name="bindPose" desc="Bones base transformation (pose)" />
</Struct> </Struct>
<Struct name="ModelAnimation" fieldCount="4" desc="ModelAnimation"> <Struct name="ModelAnimation" fieldCount="5" desc="ModelAnimation">
<Field type="int" name="boneCount" desc="Number of bones" /> <Field type="int" name="boneCount" desc="Number of bones" />
<Field type="int" name="frameCount" desc="Number of animation frames" /> <Field type="int" name="frameCount" desc="Number of animation frames" />
<Field type="BoneInfo *" name="bones" desc="Bones information (skeleton)" /> <Field type="BoneInfo *" name="bones" desc="Bones information (skeleton)" />
<Field type="Transform **" name="framePoses" desc="Poses array by frame" /> <Field type="Transform **" name="framePoses" desc="Poses array by frame" />
<Field type="char[32]" name="name" desc="Animation name" />
</Struct> </Struct>
<Struct name="Ray" fieldCount="2" desc="Ray, ray for raycasting"> <Struct name="Ray" fieldCount="2" desc="Ray, ray for raycasting">
<Field type="Vector3" name="position" desc="Ray position (origin)" /> <Field type="Vector3" name="position" desc="Ray position (origin)" />
@ -290,7 +291,7 @@
<Alias type="RenderTexture2D" name="RenderTexture" desc="RenderTexture2D, same as RenderTexture" /> <Alias type="RenderTexture2D" name="RenderTexture" desc="RenderTexture2D, same as RenderTexture" />
<Alias type="Camera" name="Camera3D" desc="Camera type fallback, defaults to Camera3D" /> <Alias type="Camera" name="Camera3D" desc="Camera type fallback, defaults to Camera3D" />
</Aliases> </Aliases>
<Enums count="21"> <Enums count="23">
<Enum name="ConfigFlags" valueCount="15" desc="System/Window config flags"> <Enum name="ConfigFlags" valueCount="15" desc="System/Window config flags">
<Value name="FLAG_VSYNC_HINT" integer="64" desc="Set to try enabling V-Sync on GPU" /> <Value name="FLAG_VSYNC_HINT" integer="64" desc="Set to try enabling V-Sync on GPU" />
<Value name="FLAG_FULLSCREEN_MODE" integer="2" desc="Set to run program in fullscreen" /> <Value name="FLAG_FULLSCREEN_MODE" integer="2" desc="Set to run program in fullscreen" />
@ -538,6 +539,19 @@
<Value name="SHADER_ATTRIB_VEC3" integer="2" desc="Shader attribute type: vec3 (3 float)" /> <Value name="SHADER_ATTRIB_VEC3" integer="2" desc="Shader attribute type: vec3 (3 float)" />
<Value name="SHADER_ATTRIB_VEC4" integer="3" desc="Shader attribute type: vec4 (4 float)" /> <Value name="SHADER_ATTRIB_VEC4" integer="3" desc="Shader attribute type: vec4 (4 float)" />
</Enum> </Enum>
<Enum name="NoiseType" valueCount="4" desc="Noise types">
<Value name="NOISE_VALUE" integer="0" desc="Value noise" />
<Value name="NOISE_WHITE" integer="1" desc="White noise" />
<Value name="NOISE_PERLIN" integer="2" desc="Perlin noise" />
<Value name="NOISE_LAYERED_PERLIN" integer="3" desc="Layered perlin noise" />
</Enum>
<Enum name="GradientType" valueCount="5" desc="Gradient types">
<Value name="GRADIENT_COLOR" integer="0" desc="Color gradient" />
<Value name="GRADIENT_LINEAR" integer="1" desc="Horizontal gradient" />
<Value name="GRADIENT_RADIAL" integer="2" desc="Vertical gradient" />
<Value name="GRADIENT_SQUARE" integer="3" desc="Square gradient" />
<Value name="GRADIENT_CONICAL" integer="4" desc="Conical gradient" />
</Enum>
<Enum name="PixelFormat" valueCount="21" desc="Pixel formats"> <Enum name="PixelFormat" valueCount="21" desc="Pixel formats">
<Value name="PIXELFORMAT_UNCOMPRESSED_GRAYSCALE" integer="1" desc="8 bit per pixel (no alpha)" /> <Value name="PIXELFORMAT_UNCOMPRESSED_GRAYSCALE" integer="1" desc="8 bit per pixel (no alpha)" />
<Value name="PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA" integer="2" desc="8*2 bpp (2 channels)" /> <Value name="PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA" integer="2" desc="8*2 bpp (2 channels)" />
@ -655,7 +669,7 @@
<Param type="unsigned int" name="frames" desc="" /> <Param type="unsigned int" name="frames" desc="" />
</Callback> </Callback>
</Callbacks> </Callbacks>
<Functions count="517"> <Functions count="516">
<Function name="InitWindow" retType="void" paramCount="3" desc="Initialize window and OpenGL context"> <Function name="InitWindow" retType="void" paramCount="3" desc="Initialize window and OpenGL context">
<Param type="int" name="width" desc="" /> <Param type="int" name="width" desc="" />
<Param type="int" name="height" desc="" /> <Param type="int" name="height" desc="" />
@ -1575,17 +1589,11 @@
<Param type="Color" name="col1" desc="" /> <Param type="Color" name="col1" desc="" />
<Param type="Color" name="col2" desc="" /> <Param type="Color" name="col2" desc="" />
</Function> </Function>
<Function name="GenImageWhiteNoise" retType="Image" paramCount="3" desc="Generate image: white noise"> <Function name="GenImageNoise" retType="Image" paramCount="4" desc="Generate image: noise">
<Param type="NoiseType" name="type" desc="" />
<Param type="int" name="width" desc="" /> <Param type="int" name="width" desc="" />
<Param type="int" name="height" desc="" /> <Param type="int" name="height" desc="" />
<Param type="float" name="factor" desc="" /> <Param type="..." name="args" desc="" />
</Function>
<Function name="GenImagePerlinNoise" retType="Image" paramCount="5" desc="Generate image: perlin noise">
<Param type="int" name="width" desc="" />
<Param type="int" name="height" desc="" />
<Param type="int" name="offsetX" desc="" />
<Param type="int" name="offsetY" desc="" />
<Param type="float" name="scale" desc="" />
</Function> </Function>
<Function name="GenImageCellular" retType="Image" paramCount="3" desc="Generate image: cellular algorithm, bigger tileSize means bigger cells"> <Function name="GenImageCellular" retType="Image" paramCount="3" desc="Generate image: cellular algorithm, bigger tileSize means bigger cells">
<Param type="int" name="width" desc="" /> <Param type="int" name="width" desc="" />

3
projects/Geany/raylib.c.tags
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@ -215,8 +215,7 @@ GenImageGradientV|Image|(int width, int height, Color top, Color bottom);|
GenImageGradientH|Image|(int width, int height, Color left, Color right);| GenImageGradientH|Image|(int width, int height, Color left, Color right);|
GenImageGradientRadial|Image|(int width, int height, float density, Color inner, Color outer);| GenImageGradientRadial|Image|(int width, int height, float density, Color inner, Color outer);|
GenImageChecked|Image|(int width, int height, int checksX, int checksY, Color col1, Color col2);| GenImageChecked|Image|(int width, int height, int checksX, int checksY, Color col1, Color col2);|
GenImageWhiteNoise|Image|(int width, int height, float factor);| GenImageNoise|Image|(int width, int height, ... args);|
GenImagePerlinNoise|Image|(int width, int height, int offsetX, int offsetY, float scale);|
GenImageCellular|Image|(int width, int height, int tileSize);| GenImageCellular|Image|(int width, int height, int tileSize);|
GenTextureMipmaps|void|(Texture2D *texture);| GenTextureMipmaps|void|(Texture2D *texture);|
SetTextureFilter|void|(Texture2D texture, int filterMode);| SetTextureFilter|void|(Texture2D texture, int filterMode);|

14
projects/Notepad++/raylib_npp_parser/raylib_npp.xml
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@ -1413,6 +1413,20 @@
<Param name="Color col2" /> <Param name="Color col2" />
</Overload> </Overload>
</KeyWord> </KeyWord>
<KeyWord name="GenImageNoise" func="yes">
<Overload retVal="Image" descr="Generate image: noise">
<Param name="NoiseType type" />
<Param name="int width" />
<Param name="int height" />
<Param name="float factor" />
<Param name="int offsetX" />
<Param name="int offsetY" />
<Param name="float scale" />
<Param name="float lacunarity" />
<Param name="float gain" />
<Param name="int octaves" />
</Overload>
</KeyWord>
<KeyWord name="GenImageWhiteNoise" func="yes"> <KeyWord name="GenImageWhiteNoise" func="yes">
<Overload retVal="Image" descr="Generate image: white noise"> <Overload retVal="Image" descr="Generate image: white noise">
<Param name="int width" /> <Param name="int width" />

3
projects/Notepad++/raylib_npp_parser/raylib_to_parse.h
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@ -321,8 +321,7 @@ RLAPI Image GenImageGradientV(int width, int height, Color top, Color bottom);
RLAPI Image GenImageGradientH(int width, int height, Color left, Color right); // Generate image: horizontal gradient RLAPI Image GenImageGradientH(int width, int height, Color left, Color right); // Generate image: horizontal gradient
RLAPI Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer); // Generate image: radial gradient RLAPI Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer); // Generate image: radial gradient
RLAPI Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2); // Generate image: checked RLAPI Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2); // Generate image: checked
RLAPI Image GenImageWhiteNoise(int width, int height, float factor); // Generate image: white noise RLAPI Image GenImageNoise(NoiseType type, int width, int height, ...); // Generate image: noise
RLAPI Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float scale); // Generate image: perlin noise
RLAPI Image GenImageCellular(int width, int height, int tileSize); // Generate image: cellular algorithm, bigger tileSize means bigger cells RLAPI Image GenImageCellular(int width, int height, int tileSize); // Generate image: cellular algorithm, bigger tileSize means bigger cells
RLAPI Image GenImageText(int width, int height, const char *text); // Generate image: grayscale image from text data RLAPI Image GenImageText(int width, int height, const char *text); // Generate image: grayscale image from text data

22
src/raylib.h
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@ -79,7 +79,7 @@
#ifndef RAYLIB_H #ifndef RAYLIB_H
#define RAYLIB_H #define RAYLIB_H
#include <stdarg.h> // Required for: va_list - Only used by TraceLogCallback #include <stdarg.h> // Required for: va_list and for using ellipsis notation (...) for functions with varying arguments
#define RAYLIB_VERSION_MAJOR 4 #define RAYLIB_VERSION_MAJOR 4
#define RAYLIB_VERSION_MINOR 6 #define RAYLIB_VERSION_MINOR 6
@ -790,6 +790,23 @@ typedef enum {
SHADER_ATTRIB_VEC4 // Shader attribute type: vec4 (4 float) SHADER_ATTRIB_VEC4 // Shader attribute type: vec4 (4 float)
} ShaderAttributeDataType; } ShaderAttributeDataType;
// Noise types
typedef enum {
NOISE_VALUE = 0, // Value noise
NOISE_WHITE, // White noise
NOISE_PERLIN, // Perlin noise
NOISE_LAYERED_PERLIN // Layered perlin noise
} NoiseType;
// Gradient types
typedef enum {
GRADIENT_COLOR = 0, // Color gradient
GRADIENT_LINEAR, // Horizontal gradient
GRADIENT_RADIAL, // Vertical gradient
GRADIENT_SQUARE, // Square gradient
GRADIENT_CONICAL // Conical gradient
} GradientType;
// Pixel formats // Pixel formats
// NOTE: Support depends on OpenGL version and platform // NOTE: Support depends on OpenGL version and platform
typedef enum { typedef enum {
@ -1243,8 +1260,7 @@ RLAPI Image GenImageGradientV(int width, int height, Color top, Color bottom);
RLAPI Image GenImageGradientH(int width, int height, Color left, Color right); // Generate image: horizontal gradient RLAPI Image GenImageGradientH(int width, int height, Color left, Color right); // Generate image: horizontal gradient
RLAPI Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer); // Generate image: radial gradient RLAPI Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer); // Generate image: radial gradient
RLAPI Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2); // Generate image: checked RLAPI Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2); // Generate image: checked
RLAPI Image GenImageWhiteNoise(int width, int height, float factor); // Generate image: white noise RLAPI Image GenImageNoise(NoiseType type, int width, int height, ...); // Generate image: noise
RLAPI Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float scale); // Generate image: perlin noise
RLAPI Image GenImageCellular(int width, int height, int tileSize); // Generate image: cellular algorithm, bigger tileSize means bigger cells RLAPI Image GenImageCellular(int width, int height, int tileSize); // Generate image: cellular algorithm, bigger tileSize means bigger cells
RLAPI Image GenImageText(int width, int height, const char *text); // Generate image: grayscale image from text data RLAPI Image GenImageText(int width, int height, const char *text); // Generate image: grayscale image from text data

156
src/rtextures.c
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@ -74,6 +74,7 @@
#include "rlgl.h" // OpenGL abstraction layer to OpenGL 1.1, 3.3 or ES2 #include "rlgl.h" // OpenGL abstraction layer to OpenGL 1.1, 3.3 or ES2
#include <stdlib.h> // Required for: malloc(), free() #include <stdlib.h> // Required for: malloc(), free()
#include <stdarg.h> // Required for: using ellipsis notation (...) for functions with varying arguments
#include <string.h> // Required for: strlen() [Used in ImageTextEx()], strcmp() [Used in LoadImageFromMemory()] #include <string.h> // Required for: strlen() [Used in ImageTextEx()], strcmp() [Used in LoadImageFromMemory()]
#include <math.h> // Required for: fabsf() [Used in DrawTextureRec()] #include <math.h> // Required for: fabsf() [Used in DrawTextureRec()]
#include <stdio.h> // Required for: sprintf() [Used in ExportImageAsCode()] #include <stdio.h> // Required for: sprintf() [Used in ExportImageAsCode()]
@ -802,67 +803,118 @@ Image GenImageChecked(int width, int height, int checksX, int checksY, Color col
return image; return image;
} }
// Generate image: white noise Image GenImageNoise(NoiseType type, int width, int height, ...)
Image GenImageWhiteNoise(int width, int height, float factor)
{ {
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); Color *pixels = (Color *)malloc(width * height * sizeof(Color));
int argsCount = 0;
va_list args;
for (int i = 0; i < width*height; i++) switch (type) {
{ case NOISE_VALUE: {
if (GetRandomValue(0, 99) < (int)(factor*100.0f)) pixels[i] = WHITE; // Process the arguments for NOISE_VALUE if required
else pixels[i] = BLACK; break;
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
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);
// Basic perlin noise implementation (not used)
//float p = (stb_perlin_noise3(nx, ny, 0.0f, 0, 0, 0);
// Calculate a better perlin noise using fbm (fractal brownian motion)
// 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
float p = stb_perlin_fbm_noise3(nx, ny, 1.0f, 2.0f, 0.5f, 6);
// Clamp between -1.0f and 1.0f
if(p < -1.0f) p = -1.0f;
if(p > 1.0f) p = 1.0f;
// We need to normalize the data from [-1..1] to [0..1]
float np = (p + 1.0f)/2.0f;
int intensity = (int)(np*255.0);
pixels[y*width + x] = (Color){ intensity, intensity, intensity, 255 };
} }
case NOISE_WHITE: {
argsCount = 1;
va_start(args, argsCount);
float factor = (float)va_arg(args, double);
for (int i = 0; i < width * height; i++) {
if (rand() % 100 < (int)(factor * 100.0f))
pixels[i] = (Color){255, 255, 255, 255};
else
pixels[i] = (Color){0, 0, 0, 255};
}
break;
}
case NOISE_PERLIN: {
argsCount = 3;
va_start(args, argsCount);
int offsetX = va_arg(args, int);
int offsetY = va_arg(args, int);
float scale = (float)va_arg(args, double);
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);
// Basic perlin noise implementation (not used)
//float p = (stb_perlin_noise3(nx, ny, 0.0f, 0, 0, 0);
// Calculate a better perlin noise using fbm (fractal brownian motion)
// 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
float p = stb_perlin_fbm_noise3(nx, ny, 1.0f, 2.0f, 0.5f, 6);
// Clamp between -1.0f and 1.0f
if(p < -1.0f) p = -1.0f;
if(p > 1.0f) p = 1.0f;
// We need to normalize the data from [-1..1] to [0..1]
float np = (p + 1.0f)/2.0f;
int intensity = (int)(np*255.0);
pixels[y*width + x] = (Color){ intensity, intensity, intensity, 255 };
}
}
break;
}
case NOISE_LAYERED_PERLIN: {
argsCount = 6;
va_start(args, argsCount);
int offsetX = va_arg(args, int);
int offsetY = va_arg(args, int);
float scale = (float)va_arg(args, double);
float lacunarity = (float)va_arg(args, double);
float gain = (float)va_arg(args, double);
int octaves = va_arg(args, int);
// Generate layered Perlin noise image
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);
// Basic perlin noise implementation (not used)
//float p = (stb_perlin_noise3(nx, ny, 0.0f, 0, 0, 0);
// Calculate a better perlin noise using fbm (fractal brownian motion)
// 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
float p = stb_perlin_fbm_noise3(nx, ny, 1.0f, lacunarity, gain, octaves);
// Clamp between -1.0f and 1.0f
if(p < -1.0f) p = -1.0f;
if(p > 1.0f) p = 1.0f;
// We need to normalize the data from [-1..1] to [0..1]
float np = (p + 1.0f)/2.0f;
int intensity = (int)(np*255.0);
pixels[y*width + x] = (Color){ intensity, intensity, intensity, 255 };
}
}
break;
}
default:
break;
} }
va_end(args);
Image image = { Image image = {
.data = pixels, .data = pixels,
.width = width, .width = width,
.height = height, .height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, // Update with the desired format
.mipmaps = 1 .mipmaps = 1
}; };