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123 lines
5.4 KiB
123 lines
5.4 KiB
/*******************************************************************************************
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*
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* raylib [textures] example - image generation
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*
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* Example complexity rating: [★★☆☆] 2/4
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*
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* Example originally created with raylib 1.8, last time updated with raylib 1.8
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*
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* Example contributed by Wilhem Barbier (@nounoursheureux) and reviewed by Ramon Santamaria (@raysan5)
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*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* Copyright (c) 2017-2025 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 9 // Currently we have 8 generation algorithms but some have multiple purposes (Linear and Square Gradients)
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//------------------------------------------------------------------------------------
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// Program main entry point
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//------------------------------------------------------------------------------------
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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 - image generation");
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Image verticalGradient = GenImageGradientLinear(screenWidth, screenHeight, 0, RED, BLUE);
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Image horizontalGradient = GenImageGradientLinear(screenWidth, screenHeight, 90, RED, BLUE);
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Image diagonalGradient = GenImageGradientLinear(screenWidth, screenHeight, 45, RED, BLUE);
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Image radialGradient = GenImageGradientRadial(screenWidth, screenHeight, 0.0f, WHITE, BLACK);
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Image squareGradient = GenImageGradientSquare(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 perlinNoise = GenImagePerlinNoise(screenWidth, screenHeight, 50, 50, 4.0f);
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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(diagonalGradient);
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textures[3] = LoadTextureFromImage(radialGradient);
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textures[4] = LoadTextureFromImage(squareGradient);
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textures[5] = LoadTextureFromImage(checked);
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textures[6] = LoadTextureFromImage(whiteNoise);
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textures[7] = LoadTextureFromImage(perlinNoise);
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textures[8] = 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(diagonalGradient);
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UnloadImage(radialGradient);
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UnloadImage(squareGradient);
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UnloadImage(checked);
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UnloadImage(whiteNoise);
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UnloadImage(perlinNoise);
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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("DIAGONAL GRADIENT", 540, 10, 20, RAYWHITE); break;
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case 3: DrawText("RADIAL GRADIENT", 580, 10, 20, LIGHTGRAY); break;
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case 4: DrawText("SQUARE GRADIENT", 580, 10, 20, LIGHTGRAY); break;
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case 5: DrawText("CHECKED", 680, 10, 20, RAYWHITE); break;
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case 6: DrawText("WHITE NOISE", 640, 10, 20, RED); break;
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case 7: DrawText("PERLIN NOISE", 640, 10, 20, RED); break;
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case 8: 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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