Exemplo n.º 1
0
func TestTraceBoth(t *testing.T) {
	img := genTestBitmap()
	bm := gtr.NewBitmapFromImage(img, gtr.ThresholdAlpha)
	{
		paths, err := Trace(bm, nil)
		if err != nil {
			t.Fatal(err)
		} else if len(paths) != 1 {
			t.Fatal("wrong paths count:", len(paths))
		} else if paths[0].Sign != +1 {
			t.Fatal("wrong sign in path:", paths[0].Sign)
		}
		t.Log(paths)
	}
	{
		paths, err := Trace(bm, nil)
		if err != nil {
			t.Fatal(err)
		} else if len(paths) != 1 {
			t.Fatal("wrong paths count:", len(paths))
		} else if paths[0].Sign != +1 {
			t.Fatal("wrong sign in path:", paths[0].Sign)
		}
		t.Log(paths)
	}
}
Exemplo n.º 2
0
func loadBitmap(t *testing.T) *gtr.Bitmap {
	file, err := os.Open("../../inp.png")
	if err != nil {
		t.Skip(err)
	}
	defer file.Close()
	img, _, err := image.Decode(file)
	if err != nil {
		t.Fatal(err)
	}
	bm := gtr.NewBitmapFromImage(img, func(x, y int, c color.Color) bool {
		r, _, _, _ := c.RGBA()
		return (float64(r)/0xffff)*0xff > 128
	})
	return bm
}