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Diffstat (limited to 'examples/textures_image_drawing.c')
| -rw-r--r-- | examples/textures_image_drawing.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/examples/textures_image_drawing.c b/examples/textures_image_drawing.c new file mode 100644 index 00000000..e09828d5 --- /dev/null +++ b/examples/textures_image_drawing.c @@ -0,0 +1,78 @@ +/******************************************************************************************* +* +* raylib [textures] example - Image loading and drawing on it +* +* NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM) +* +* This example has been created using raylib 1.4 (www.raylib.com) +* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) +* +* Copyright (c) 2016 Ramon Santamaria (@raysan5) +* +********************************************************************************************/ + +#include "raylib.h" + +int main() +{ + // Initialization + //-------------------------------------------------------------------------------------- + int screenWidth = 800; + int screenHeight = 450; + + InitWindow(screenWidth, screenHeight, "raylib [textures] example - image drawing"); + + // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required) + + Image cat = LoadImage("resources/cat.png"); // Load image in CPU memory (RAM) + ImageCrop(&cat, (Rectangle){ 170, 120, 280, 380 }); // Crop an image piece + ImageFlipHorizontal(&cat); // Flip cropped image horizontally + ImageResize(&cat, 150, 200); // Resize flipped-cropped image + + Image parrots = LoadImage("resources/parrots.png"); // Load image in CPU memory (RAM) + + // Draw one image over the other with a scaling of 1.5f + ImageDraw(&parrots, cat, (Rectangle){ 0, 0, cat.width, cat.height}, (Rectangle){ 30, 40, cat.width*1.5f, cat.height*1.5f }); + ImageCrop(&parrots, (Rectangle){ 0, 50, parrots.width, parrots.height - 100 }); // Crop resulting image + + UnloadImage(cat); // Unload image from RAM + + Texture2D texture = LoadTextureFromImage(parrots); // Image converted to texture, uploaded to GPU memory (VRAM) + UnloadImage(parrots); // Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM + + SetTargetFPS(60); + //--------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + // TODO: Update your variables here + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2 - 40, WHITE); + DrawRectangleLines(screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2 - 40, texture.width, texture.height, DARKGRAY); + + DrawText("We are drawing only one texture from various images composed!", 240, 350, 10, DARKGRAY); + DrawText("Source images have been cropped, scaled, flipped and copied one over the other.", 190, 370, 10, DARKGRAY); + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + UnloadTexture(texture); // Texture unloading + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +}
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