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/*******************************************************************************************
*
* raylib [textures] example - Procedural images generation
*
* This example has been created using raylib 1.8 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2O17 Wilhem Barbier (@nounoursheureux)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
#define NUM_TEXTURES 7 // Currently we have 7 generation algorithms
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
Texture2D textures[NUM_TEXTURES];
int currentTexture = 0;
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Main Enry Point
//----------------------------------------------------------------------------------
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [textures] example - procedural images generation");
Image verticalGradient = GenImageGradientV(screenWidth, screenHeight, RED, BLUE);
Image horizontalGradient = GenImageGradientH(screenWidth, screenHeight, RED, BLUE);
Image radialGradient = GenImageGradientRadial(screenWidth, screenHeight, 0.f, WHITE, BLACK);
Image checked = GenImageChecked(screenWidth, screenHeight, 32, 32, RED, BLUE);
Image whiteNoise = GenImageWhiteNoise(screenWidth, screenHeight, 0.5f);
Image perlinNoise = GenImagePerlinNoise(screenWidth, screenHeight, 8.f);
Image cellular = GenImageCellular(screenWidth, screenHeight, 32);
textures[0] = LoadTextureFromImage(verticalGradient);
textures[1] = LoadTextureFromImage(horizontalGradient);
textures[2] = LoadTextureFromImage(radialGradient);
textures[3] = LoadTextureFromImage(checked);
textures[4] = LoadTextureFromImage(whiteNoise);
textures[5] = LoadTextureFromImage(perlinNoise);
textures[6] = LoadTextureFromImage(cellular);
// Unload image data (CPU RAM)
UnloadImage(verticalGradient);
UnloadImage(horizontalGradient);
UnloadImage(radialGradient);
UnloadImage(checked);
UnloadImage(whiteNoise);
UnloadImage(perlinNoise);
UnloadImage(cellular);
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
#else
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
UpdateDrawFrame();
}
#endif
// De-Initialization
//--------------------------------------------------------------------------------------
// Unload textures data (GPU VRAM)
for (int i = 0; i < NUM_TEXTURES; i++) UnloadTexture(textures[i]);
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// Update
//----------------------------------------------------------------------------------
if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
{
currentTexture = (currentTexture + 1)%NUM_TEXTURES; // Cycle between the textures
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawTexture(textures[currentTexture], 0, 0, WHITE);
DrawRectangle(30, 400, 325, 30, Fade(SKYBLUE, 0.5f));
DrawRectangleLines(30, 400, 325, 30, Fade(WHITE, 0.5f));
DrawText("MOUSE LEFT BUTTON to CYCLE PROCEDURAL TEXTURES", 40, 410, 10, WHITE);
switch(currentTexture)
{
case 0: DrawText("VERTICAL GRADIENT", 560, 10, 20, RAYWHITE); break;
case 1: DrawText("HORIZONTAL GRADIENT", 540, 10, 20, RAYWHITE); break;
case 2: DrawText("RADIAL GRADIENT", 580, 10, 20, LIGHTGRAY); break;
case 3: DrawText("CHECKED", 680, 10, 20, RAYWHITE); break;
case 4: DrawText("WHITE NOISE", 640, 10, 20, RED); break;
case 5: DrawText("PERLIN NOISE", 630, 10, 20, RAYWHITE); break;
case 6: DrawText("CELLULAR", 670, 10, 20, RAYWHITE); break;
default: break;
}
EndDrawing();
//----------------------------------------------------------------------------------
}
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