Add raylib lua examples

1 files changed, 70 insertions, 0 deletions

diff --git a/examples/textures_image_drawing.lua b/examples/textures_image_drawing.lua
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+-------------------------------------------------------------------------------------------
+--
+--  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 1.6 (www.raylib.com)
+--  raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+--
+--  Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
+--
+-------------------------------------------------------------------------------------------
+
+-- Initialization
+-------------------------------------------------------------------------------------------
+local screenWidth = 800
+local screenHeight = 450
+
+InitWindow(screenWidth, screenHeight, "raylib [textures] example - image drawing")
+
+-- NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+local cat = LoadImage("resources/cat.png")             -- Load image in CPU memory (RAM)
+cat = ImageCrop(cat, Rectangle(100, 10, 280, 380))     -- Crop an image piece
+cat = ImageFlipHorizontal(cat)                         -- Flip cropped image horizontally
+cat = ImageResize(cat, 150, 200)                       -- Resize flipped-cropped image
+
+local parrots = LoadImage("resources/parrots.png")     -- Load image in CPU memory (RAM)
+
+-- Draw one image over the other with a scaling of 1.5f
+parrots = ImageDraw(parrots, cat, Rectangle(0, 0, cat.width, cat.height), Rectangle(30, 40, cat.width*1.5, cat.height*1.5))
+parrots = ImageCrop(parrots, Rectangle(0, 50, parrots.width, parrots.height - 100)) -- Crop resulting image
+
+UnloadImage(cat)       -- Unload image from RAM
+
+local 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 not WindowShouldClose() do            -- 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()
+    ---------------------------------------------------------------------------------------
+end
+
+-- De-Initialization
+-------------------------------------------------------------------------------------------
+UnloadTexture(texture)       -- Texture unloading
+
+CloseWindow()                -- Close window and OpenGL context
+-------------------------------------------------------------------------------------------
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