3e71232a04
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.
103 lines
4.1 KiB
C
103 lines
4.1 KiB
C
/*******************************************************************************************
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*
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* raylib [textures] example - Procedural images generation
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*
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* This example has been created using raylib 1.8 (www.raylib.com)
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* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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*
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* Copyright (c) 2O17-2021 Wilhem Barbier (@nounoursheureux) and Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#define NUM_TEXTURES 6 // Currently we have 7 generation algorithms
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int main(void)
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
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const int screenHeight = 450;
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InitWindow(screenWidth, screenHeight, "raylib [textures] example - procedural images generation");
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Image verticalGradient = GenImageGradientV(screenWidth, screenHeight, RED, BLUE);
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Image horizontalGradient = GenImageGradientH(screenWidth, screenHeight, RED, BLUE);
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Image radialGradient = GenImageGradientRadial(screenWidth, screenHeight, 0.0f, WHITE, BLACK);
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Image checked = GenImageChecked(screenWidth, screenHeight, 32, 32, RED, BLUE);
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Image whiteNoise = GenImageWhiteNoise(screenWidth, screenHeight, 0.5f);
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Image cellular = GenImageCellular(screenWidth, screenHeight, 32);
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Texture2D textures[NUM_TEXTURES] = { 0 };
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textures[0] = LoadTextureFromImage(verticalGradient);
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textures[1] = LoadTextureFromImage(horizontalGradient);
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textures[2] = LoadTextureFromImage(radialGradient);
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textures[3] = LoadTextureFromImage(checked);
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textures[4] = LoadTextureFromImage(whiteNoise);
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textures[5] = LoadTextureFromImage(cellular);
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// Unload image data (CPU RAM)
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UnloadImage(verticalGradient);
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UnloadImage(horizontalGradient);
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UnloadImage(radialGradient);
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UnloadImage(checked);
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UnloadImage(whiteNoise);
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UnloadImage(cellular);
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int currentTexture = 0;
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SetTargetFPS(60);
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//---------------------------------------------------------------------------------------
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// Main game loop
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while (!WindowShouldClose())
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{
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// Update
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//----------------------------------------------------------------------------------
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if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT) || IsKeyPressed(KEY_RIGHT))
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{
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currentTexture = (currentTexture + 1)%NUM_TEXTURES; // Cycle between the textures
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}
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(RAYWHITE);
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DrawTexture(textures[currentTexture], 0, 0, WHITE);
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DrawRectangle(30, 400, 325, 30, Fade(SKYBLUE, 0.5f));
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DrawRectangleLines(30, 400, 325, 30, Fade(WHITE, 0.5f));
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DrawText("MOUSE LEFT BUTTON to CYCLE PROCEDURAL TEXTURES", 40, 410, 10, WHITE);
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switch(currentTexture)
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{
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case 0: DrawText("VERTICAL GRADIENT", 560, 10, 20, RAYWHITE); break;
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case 1: DrawText("HORIZONTAL GRADIENT", 540, 10, 20, RAYWHITE); break;
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case 2: DrawText("RADIAL GRADIENT", 580, 10, 20, LIGHTGRAY); break;
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case 3: DrawText("CHECKED", 680, 10, 20, RAYWHITE); break;
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case 4: DrawText("WHITE NOISE", 640, 10, 20, RED); break;
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case 5: DrawText("CELLULAR", 670, 10, 20, RAYWHITE); break;
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default: break;
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}
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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// De-Initialization
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//--------------------------------------------------------------------------------------
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// Unload textures data (GPU VRAM)
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for (int i = 0; i < NUM_TEXTURES; i++) UnloadTexture(textures[i]);
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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