photo mosaic blog 11

.go

for y := bounds.Min.Y; y < bounds.Max.Y; y = y + tileSize {
    for x := bounds.Min.X; x < bounds.Max.X; x = x + tileSize {
        // use the top left most pixel color as the average color
        r, g, b, _ := original.At(x, y).RGBA()
        color := [3]float64{float64(r), float64(g), float64(b)}
        // get the closest tile from the tiles DB
        nearest := nearest(color, &db)
        file, err := os.Open(nearest)
        if err == nil {
            img, _, err := image.Decode(file)
            if err == nil {
                // resize the tile to the correct size 
                t := resize(img, tileSize)
                tile := t.SubImage(t.Bounds())
                tileBounds := image.Rect(x, y, x+tileSize, y+tileSize)
                // draw the tile into the mosaic
                draw.Draw(newimage, tileBounds, tile, sp, draw.Src)
            } else {
                fmt.Println("error:", err, nearest)
            }
        } else {
            fmt.Println("error:", nearest)
        }
        file.Close()
    }
}