49 lines
2.1 KiB
Go
49 lines
2.1 KiB
Go
package main
|
|
|
|
import (
|
|
"github.com/gen2brain/raylib-go/raylib"
|
|
)
|
|
|
|
func main() {
|
|
screenWidth := int32(800)
|
|
screenHeight := int32(450)
|
|
|
|
raylib.InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture loading and drawing")
|
|
|
|
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
|
|
cat := raylib.LoadImage("cat.png") // Load image in CPU memory (RAM)
|
|
raylib.ImageCrop(cat, raylib.NewRectangle(100, 10, 280, 380)) // Crop an image piece
|
|
raylib.ImageFlipHorizontal(cat) // Flip cropped image horizontally
|
|
raylib.ImageResize(cat, 150, 200) // Resize flipped-cropped image
|
|
|
|
parrots := raylib.LoadImage("parrots.png") // Load image in CPU memory (RAM)
|
|
|
|
// Draw one image over the other with a scaling of 1.5f
|
|
raylib.ImageDraw(parrots, cat, raylib.NewRectangle(0, 0, float32(cat.Width), float32(cat.Height)), raylib.NewRectangle(30, 40, float32(cat.Width)*1.5, float32(cat.Height)*1.5))
|
|
raylib.ImageCrop(parrots, raylib.NewRectangle(0, 50, float32(parrots.Width), float32(parrots.Height-100))) // Crop resulting image
|
|
|
|
raylib.UnloadImage(cat) // Unload image from RAM
|
|
|
|
texture := raylib.LoadTextureFromImage(parrots) // Image converted to texture, uploaded to GPU memory (VRAM)
|
|
raylib.UnloadImage(parrots) // Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM
|
|
|
|
raylib.SetTargetFPS(60)
|
|
|
|
for !raylib.WindowShouldClose() {
|
|
raylib.BeginDrawing()
|
|
|
|
raylib.ClearBackground(raylib.RayWhite)
|
|
|
|
raylib.DrawTexture(texture, screenWidth/2-texture.Width/2, screenHeight/2-texture.Height/2-40, raylib.White)
|
|
raylib.DrawRectangleLines(screenWidth/2-texture.Width/2, screenHeight/2-texture.Height/2-40, texture.Width, texture.Height, raylib.DarkGray)
|
|
|
|
raylib.DrawText("We are drawing only one texture from various images composed!", 240, 350, 10, raylib.DarkGray)
|
|
raylib.DrawText("Source images have been cropped, scaled, flipped and copied one over the other.", 190, 370, 10, raylib.DarkGray)
|
|
|
|
raylib.EndDrawing()
|
|
}
|
|
|
|
raylib.UnloadTexture(texture)
|
|
|
|
raylib.CloseWindow()
|
|
}
|