diff options
Diffstat (limited to 'examples/textures_image_drawing.c')
| -rw-r--r-- | examples/textures_image_drawing.c | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/examples/textures_image_drawing.c b/examples/textures_image_drawing.c index 51a90b07..e09828d5 100644 --- a/examples/textures_image_drawing.c +++ b/examples/textures_image_drawing.c @@ -1,11 +1,13 @@ /******************************************************************************************* * -* raylib [core] example - Basic window +* raylib [textures] example - Image loading and drawing on it * -* This example has been created using raylib 1.0 (www.raylib.com) +* 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) 2014 Ramon Santamaria (@raysan5) +* Copyright (c) 2016 Ramon Santamaria (@raysan5) * ********************************************************************************************/ @@ -18,8 +20,28 @@ int main() int screenWidth = 800; int screenHeight = 450; - InitWindow(screenWidth, screenHeight, "raylib [core] example - basic window"); - //-------------------------------------------------------------------------------------- + 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 @@ -35,15 +57,21 @@ int main() ClearBackground(RAYWHITE); - DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY); + 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 - //-------------------------------------------------------------------------------------- - CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + UnloadTexture(texture); // Texture unloading + + CloseWindow(); // Close window and OpenGL context //-------------------------------------------------------------------------------------- return 0; |