UnrealXR/raylib-go
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Add ToImage/FromImage helpers for Go image.Image interface

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This commit is contained in:
Milan Nikolic 2017-10-27 13:59:05 +02:00
parent bc794349c5
commit fb585b0065
2 changed files with 55 additions and 19 deletions
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40
examples/textures/image_image/main.go
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@ -24,33 +24,37 @@ func main() {
raylib.TraceLog(raylib.LogError, err.Error())
}
// Get image size
size := img.Bounds().Size()
// Dynamic memory allocation to store pixels data (Color type)
pixels := make([]raylib.Color, size.X*size.Y)
for y := 0; y < size.Y; y++ {
for x := 0; x < size.X; x++ {
color := img.At(x, y)
r, g, b, a := color.RGBA()
pixels[x+y*size.Y] = raylib.NewColor(uint8(r), uint8(g), uint8(b), uint8(a))
}
}
// Load pixels data into an image structure and create texture
imEx := raylib.LoadImageEx(pixels, int32(size.X), int32(size.Y))
texture := raylib.LoadTextureFromImage(imEx)
// Create raylib.Image from Go image.Image and create texture
im := raylib.NewImageFromImage(img)
texture := raylib.LoadTextureFromImage(im)
// Unload CPU (RAM) image data
raylib.UnloadImage(imEx)
raylib.UnloadImage(im)
raylib.SetTargetFPS(60)
for !raylib.WindowShouldClose() {
if raylib.IsKeyPressed(raylib.KeyS) {
rimg := raylib.GetTextureData(texture)
f, err := os.Create("image_saved.png")
if err != nil {
raylib.TraceLog(raylib.LogError, err.Error())
}
err = png.Encode(f, rimg.ToImage())
if err != nil {
raylib.TraceLog(raylib.LogError, err.Error())
}
f.Close()
}
raylib.BeginDrawing()
raylib.ClearBackground(raylib.RayWhite)
raylib.DrawText("PRESS S TO SAVE IMAGE FROM TEXTURE", 20, 20, 12, raylib.LightGray)
raylib.DrawTexture(texture, screenWidth/2-texture.Width/2, screenHeight/2-texture.Height/2, raylib.White)
raylib.DrawText("this IS a texture loaded from an image.Image!", 285, 370, 10, raylib.Gray)