| package imaging |
| |
| import ( |
| "bytes" |
| "image" |
| "image/color" |
| "testing" |
| ) |
| |
| func TestNew(t *testing.T) { |
| testCases := []struct { |
| name string |
| w, h int |
| c color.Color |
| dstBounds image.Rectangle |
| dstPix []uint8 |
| }{ |
| { |
| "New 1x1 transparent", |
| 1, 1, |
| color.Transparent, |
| image.Rect(0, 0, 1, 1), |
| []uint8{0x00, 0x00, 0x00, 0x00}, |
| }, |
| { |
| "New 1x2 red", |
| 1, 2, |
| color.RGBA{255, 0, 0, 255}, |
| image.Rect(0, 0, 1, 2), |
| []uint8{0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff}, |
| }, |
| { |
| "New 2x1 white", |
| 2, 1, |
| color.White, |
| image.Rect(0, 0, 2, 1), |
| []uint8{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, |
| }, |
| { |
| "New 3x3 with alpha", |
| 3, 3, |
| color.NRGBA{0x01, 0x23, 0x45, 0x67}, |
| image.Rect(0, 0, 3, 3), |
| []uint8{ |
| 0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67, |
| 0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67, |
| 0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67, |
| }, |
| }, |
| { |
| "New 0x0 white", |
| 0, 0, |
| color.White, |
| image.Rect(0, 0, 0, 0), |
| nil, |
| }, |
| { |
| "New 800x600 custom", |
| 800, 600, |
| color.NRGBA{1, 2, 3, 4}, |
| image.Rect(0, 0, 800, 600), |
| bytes.Repeat([]byte{1, 2, 3, 4}, 800*600), |
| }, |
| } |
| |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := New(tc.w, tc.h, tc.c) |
| want := image.NewNRGBA(tc.dstBounds) |
| want.Pix = tc.dstPix |
| if !compareNRGBA(got, want, 0) { |
| t.Fatalf("got result %#v want %#v", got, want) |
| } |
| }) |
| } |
| } |
| |
| func BenchmarkNew(b *testing.B) { |
| b.ReportAllocs() |
| for i := 0; i < b.N; i++ { |
| New(1024, 1024, color.White) |
| } |
| } |
| |
| func TestClone(t *testing.T) { |
| testCases := []struct { |
| name string |
| src image.Image |
| want *image.NRGBA |
| }{ |
| { |
| "Clone NRGBA", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 0, 1), |
| Stride: 1 * 4, |
| Pix: []uint8{0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff}, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 2), |
| Stride: 1 * 4, |
| Pix: []uint8{0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff}, |
| }, |
| }, |
| { |
| "Clone NRGBA64", |
| &image.NRGBA64{ |
| Rect: image.Rect(-1, -1, 0, 1), |
| Stride: 1 * 8, |
| Pix: []uint8{ |
| 0x00, 0x00, 0x11, 0x11, 0x22, 0x22, 0x33, 0x33, |
| 0xcc, 0xcc, 0xdd, 0xdd, 0xee, 0xee, 0xff, 0xff, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 2), |
| Stride: 1 * 4, |
| Pix: []uint8{0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff}, |
| }, |
| }, |
| { |
| "Clone RGBA", |
| &image.RGBA{ |
| Rect: image.Rect(-1, -1, 0, 2), |
| Stride: 1 * 4, |
| Pix: []uint8{0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff}, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 3), |
| Stride: 1 * 4, |
| Pix: []uint8{0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0x33, 0xcc, 0xdd, 0xee, 0xff}, |
| }, |
| }, |
| { |
| "Clone RGBA64", |
| &image.RGBA64{ |
| Rect: image.Rect(-1, -1, 0, 2), |
| Stride: 1 * 8, |
| Pix: []uint8{ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x11, 0x11, 0x22, 0x22, 0x33, 0x33, |
| 0xcc, 0xcc, 0xdd, 0xdd, 0xee, 0xee, 0xff, 0xff, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 3), |
| Stride: 1 * 4, |
| Pix: []uint8{0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0x33, 0xcc, 0xdd, 0xee, 0xff}, |
| }, |
| }, |
| { |
| "Clone Gray", |
| &image.Gray{ |
| Rect: image.Rect(-1, -1, 0, 1), |
| Stride: 1 * 1, |
| Pix: []uint8{0x11, 0xee}, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 2), |
| Stride: 1 * 4, |
| Pix: []uint8{0x11, 0x11, 0x11, 0xff, 0xee, 0xee, 0xee, 0xff}, |
| }, |
| }, |
| { |
| "Clone Gray16", |
| &image.Gray16{ |
| Rect: image.Rect(-1, -1, 0, 1), |
| Stride: 1 * 2, |
| Pix: []uint8{0x11, 0x11, 0xee, 0xee}, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 2), |
| Stride: 1 * 4, |
| Pix: []uint8{0x11, 0x11, 0x11, 0xff, 0xee, 0xee, 0xee, 0xff}, |
| }, |
| }, |
| { |
| "Clone Alpha", |
| &image.Alpha{ |
| Rect: image.Rect(-1, -1, 0, 1), |
| Stride: 1 * 1, |
| Pix: []uint8{0x11, 0xee}, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 2), |
| Stride: 1 * 4, |
| Pix: []uint8{0xff, 0xff, 0xff, 0x11, 0xff, 0xff, 0xff, 0xee}, |
| }, |
| }, |
| { |
| "Clone YCbCr", |
| &image.YCbCr{ |
| Rect: image.Rect(-1, -1, 5, 0), |
| SubsampleRatio: image.YCbCrSubsampleRatio444, |
| YStride: 6, |
| CStride: 6, |
| Y: []uint8{0x00, 0xff, 0x7f, 0x26, 0x4b, 0x0e}, |
| Cb: []uint8{0x80, 0x80, 0x80, 0x6b, 0x56, 0xc0}, |
| Cr: []uint8{0x80, 0x80, 0x80, 0xc0, 0x4b, 0x76}, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 6, 1), |
| Stride: 6 * 4, |
| Pix: []uint8{ |
| 0x00, 0x00, 0x00, 0xff, |
| 0xff, 0xff, 0xff, 0xff, |
| 0x7f, 0x7f, 0x7f, 0xff, |
| 0x7f, 0x00, 0x00, 0xff, |
| 0x00, 0x7f, 0x00, 0xff, |
| 0x00, 0x00, 0x7f, 0xff, |
| }, |
| }, |
| }, |
| { |
| "Clone YCbCr 444", |
| &image.YCbCr{ |
| Y: []uint8{0x4c, 0x69, 0x1d, 0xb1, 0x96, 0xe2, 0x26, 0x34, 0xe, 0x59, 0x4b, 0x71, 0x0, 0x4c, 0x99, 0xff}, |
| Cb: []uint8{0x55, 0xd4, 0xff, 0x8e, 0x2c, 0x01, 0x6b, 0xaa, 0xc0, 0x95, 0x56, 0x40, 0x80, 0x80, 0x80, 0x80}, |
| Cr: []uint8{0xff, 0xeb, 0x6b, 0x36, 0x15, 0x95, 0xc0, 0xb5, 0x76, 0x41, 0x4b, 0x8c, 0x80, 0x80, 0x80, 0x80}, |
| YStride: 4, |
| CStride: 4, |
| SubsampleRatio: image.YCbCrSubsampleRatio444, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| &image.NRGBA{ |
| Pix: []uint8{0xff, 0x0, 0x0, 0xff, 0xff, 0x0, 0xff, 0xff, 0x0, 0x0, 0xff, 0xff, 0x49, 0xe1, 0xca, 0xff, 0x0, 0xff, 0x0, 0xff, 0xff, 0xff, 0x0, 0xff, 0x7f, 0x0, 0x0, 0xff, 0x7f, 0x0, 0x7f, 0xff, 0x0, 0x0, 0x7f, 0xff, 0x0, 0x7f, 0x7f, 0xff, 0x0, 0x7f, 0x0, 0xff, 0x82, 0x7f, 0x0, 0xff, 0x0, 0x0, 0x0, 0xff, 0x4c, 0x4c, 0x4c, 0xff, 0x99, 0x99, 0x99, 0xff, 0xff, 0xff, 0xff, 0xff}, |
| Stride: 16, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| }, |
| { |
| "Clone YCbCr 440", |
| &image.YCbCr{ |
| Y: []uint8{0x4c, 0x69, 0x1d, 0xb1, 0x96, 0xe2, 0x26, 0x34, 0xe, 0x59, 0x4b, 0x71, 0x0, 0x4c, 0x99, 0xff}, |
| Cb: []uint8{0x2c, 0x01, 0x6b, 0xaa, 0x80, 0x80, 0x80, 0x80}, |
| Cr: []uint8{0x15, 0x95, 0xc0, 0xb5, 0x80, 0x80, 0x80, 0x80}, |
| YStride: 4, |
| CStride: 4, |
| SubsampleRatio: image.YCbCrSubsampleRatio440, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| &image.NRGBA{ |
| Pix: []uint8{0x0, 0xb5, 0x0, 0xff, 0x86, 0x86, 0x0, 0xff, 0x77, 0x0, 0x0, 0xff, 0xfb, 0x7d, 0xfb, 0xff, 0x0, 0xff, 0x1, 0xff, 0xff, 0xff, 0x1, 0xff, 0x80, 0x0, 0x1, 0xff, 0x7e, 0x0, 0x7e, 0xff, 0xe, 0xe, 0xe, 0xff, 0x59, 0x59, 0x59, 0xff, 0x4b, 0x4b, 0x4b, 0xff, 0x71, 0x71, 0x71, 0xff, 0x0, 0x0, 0x0, 0xff, 0x4c, 0x4c, 0x4c, 0xff, 0x99, 0x99, 0x99, 0xff, 0xff, 0xff, 0xff, 0xff}, |
| Stride: 16, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| }, |
| { |
| "Clone YCbCr 422", |
| &image.YCbCr{ |
| Y: []uint8{0x4c, 0x69, 0x1d, 0xb1, 0x96, 0xe2, 0x26, 0x34, 0xe, 0x59, 0x4b, 0x71, 0x0, 0x4c, 0x99, 0xff}, |
| Cb: []uint8{0xd4, 0x8e, 0x01, 0xaa, 0x95, 0x40, 0x80, 0x80}, |
| Cr: []uint8{0xeb, 0x36, 0x95, 0xb5, 0x41, 0x8c, 0x80, 0x80}, |
| YStride: 4, |
| CStride: 2, |
| SubsampleRatio: image.YCbCrSubsampleRatio422, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| &image.NRGBA{ |
| Pix: []uint8{0xe2, 0x0, 0xe1, 0xff, 0xff, 0x0, 0xfe, 0xff, 0x0, 0x4d, 0x36, 0xff, 0x49, 0xe1, 0xca, 0xff, 0xb3, 0xb3, 0x0, 0xff, 0xff, 0xff, 0x1, 0xff, 0x70, 0x0, 0x70, 0xff, 0x7e, 0x0, 0x7e, 0xff, 0x0, 0x34, 0x33, 0xff, 0x1, 0x7f, 0x7e, 0xff, 0x5c, 0x58, 0x0, 0xff, 0x82, 0x7e, 0x0, 0xff, 0x0, 0x0, 0x0, 0xff, 0x4c, 0x4c, 0x4c, 0xff, 0x99, 0x99, 0x99, 0xff, 0xff, 0xff, 0xff, 0xff}, |
| Stride: 16, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| }, |
| { |
| "Clone YCbCr 420", |
| &image.YCbCr{ |
| Y: []uint8{0x4c, 0x69, 0x1d, 0xb1, 0x96, 0xe2, 0x26, 0x34, 0xe, 0x59, 0x4b, 0x71, 0x0, 0x4c, 0x99, 0xff}, |
| Cb: []uint8{0x01, 0xaa, 0x80, 0x80}, |
| Cr: []uint8{0x95, 0xb5, 0x80, 0x80}, |
| YStride: 4, CStride: 2, |
| SubsampleRatio: image.YCbCrSubsampleRatio420, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| &image.NRGBA{ |
| Pix: []uint8{0x69, 0x69, 0x0, 0xff, 0x86, 0x86, 0x0, 0xff, 0x67, 0x0, 0x67, 0xff, 0xfb, 0x7d, 0xfb, 0xff, 0xb3, 0xb3, 0x0, 0xff, 0xff, 0xff, 0x1, 0xff, 0x70, 0x0, 0x70, 0xff, 0x7e, 0x0, 0x7e, 0xff, 0xe, 0xe, 0xe, 0xff, 0x59, 0x59, 0x59, 0xff, 0x4b, 0x4b, 0x4b, 0xff, 0x71, 0x71, 0x71, 0xff, 0x0, 0x0, 0x0, 0xff, 0x4c, 0x4c, 0x4c, 0xff, 0x99, 0x99, 0x99, 0xff, 0xff, 0xff, 0xff, 0xff}, |
| Stride: 16, |
| Rect: image.Rectangle{Min: image.Point{X: 0, Y: 0}, Max: image.Point{X: 4, Y: 4}}, |
| }, |
| }, |
| { |
| "Clone Paletted", |
| &image.Paletted{ |
| Rect: image.Rect(-1, -1, 5, 0), |
| Stride: 6 * 1, |
| Palette: color.Palette{ |
| color.NRGBA{R: 0x00, G: 0x00, B: 0x00, A: 0xff}, |
| color.NRGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}, |
| color.NRGBA{R: 0x7f, G: 0x7f, B: 0x7f, A: 0xff}, |
| color.NRGBA{R: 0x7f, G: 0x00, B: 0x00, A: 0xff}, |
| color.NRGBA{R: 0x00, G: 0x7f, B: 0x00, A: 0xff}, |
| color.NRGBA{R: 0x00, G: 0x00, B: 0x7f, A: 0xff}, |
| }, |
| Pix: []uint8{0x0, 0x1, 0x2, 0x3, 0x4, 0x5}, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 6, 1), |
| Stride: 6 * 4, |
| Pix: []uint8{ |
| 0x00, 0x00, 0x00, 0xff, |
| 0xff, 0xff, 0xff, 0xff, |
| 0x7f, 0x7f, 0x7f, 0xff, |
| 0x7f, 0x00, 0x00, 0xff, |
| 0x00, 0x7f, 0x00, 0xff, |
| 0x00, 0x00, 0x7f, 0xff, |
| }, |
| }, |
| }, |
| } |
| |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := Clone(tc.src) |
| delta := 0 |
| if _, ok := tc.src.(*image.YCbCr); ok { |
| delta = 1 |
| } |
| if !compareNRGBA(got, tc.want, delta) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
| |
| func TestCrop(t *testing.T) { |
| testCases := []struct { |
| name string |
| src image.Image |
| r image.Rectangle |
| want *image.NRGBA |
| }{ |
| { |
| "Crop 2x3 2x1", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| image.Rect(-1, 0, 1, 1), |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 1), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| }, |
| }, |
| }, |
| } |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := Crop(tc.src, tc.r) |
| if !compareNRGBA(got, tc.want, 0) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
| |
| func BenchmarkCrop(b *testing.B) { |
| b.ReportAllocs() |
| for i := 0; i < b.N; i++ { |
| Crop(testdataBranchesJPG, image.Rect(100, 100, 300, 300)) |
| } |
| } |
| |
| func TestCropCenter(t *testing.T) { |
| testCases := []struct { |
| name string |
| src image.Image |
| w, h int |
| want *image.NRGBA |
| }{ |
| { |
| "CropCenter 2x3 2x1", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| 2, 1, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 1), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| }, |
| }, |
| }, |
| { |
| "CropCenter 2x3 0x1", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| 0, 1, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 0, 0), |
| Stride: 0, |
| Pix: []uint8{}, |
| }, |
| }, |
| { |
| "CropCenter 2x3 5x5", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| 5, 5, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 3), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| }, |
| } |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := CropCenter(tc.src, tc.w, tc.h) |
| if !compareNRGBA(got, tc.want, 0) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
| |
| func TestCropAnchor(t *testing.T) { |
| testCases := []struct { |
| name string |
| src image.Image |
| w, h int |
| anchor Anchor |
| want *image.NRGBA |
| }{ |
| { |
| "CropAnchor 4x4 2x2 TopLeft", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| TopLeft, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 Top", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| Top, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, |
| 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 TopRight", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| TopRight, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 Left", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| Left, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 Center", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| Center, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, |
| 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 Right", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| Right, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 BottomLeft", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| BottomLeft, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 Bottom", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| Bottom, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
| 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 2x2 BottomRight", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 2, 2, |
| BottomRight, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 0x0 BottomRight", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 0, 0, |
| BottomRight, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 0, 0), |
| Stride: 0, |
| Pix: []uint8{}, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 100x100 BottomRight", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 100, 100, |
| BottomRight, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 4, 4), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 1x100 BottomRight", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 1, 100, |
| BottomRight, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 1, 4), |
| Stride: 1 * 4, |
| Pix: []uint8{ |
| 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| }, |
| { |
| "CropAnchor 4x4 0x100 BottomRight", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 3, 3), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| }, |
| }, |
| 0, 100, |
| BottomRight, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 0, 0), |
| Stride: 0, |
| Pix: []uint8{}, |
| }, |
| }, |
| } |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := CropAnchor(tc.src, tc.w, tc.h, tc.anchor) |
| if !compareNRGBA(got, tc.want, 0) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
| |
| func TestPaste(t *testing.T) { |
| testCases := []struct { |
| name string |
| src1 image.Image |
| src2 image.Image |
| p image.Point |
| want *image.NRGBA |
| }{ |
| { |
| "Paste 2x3 2x1", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(1, 1, 3, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, |
| }, |
| }, |
| image.Pt(-1, 0), |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 3), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| }, |
| { |
| "Paste 3x4 4x3 bottom right intersection", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 2, 3), |
| Stride: 3 * 4, |
| Pix: []uint8{ |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(1, 1, 5, 4), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
| 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
| 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
| }, |
| }, |
| image.Pt(0, 1), |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 3, 4), |
| Stride: 3 * 4, |
| Pix: []uint8{ |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
| 0x30, 0x31, 0x32, 0x33, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 0x40, 0x41, 0x42, 0x43, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, |
| }, |
| }, |
| }, |
| { |
| "Paste 3x4 4x3 top left intersection", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 2, 3), |
| Stride: 3 * 4, |
| Pix: []uint8{ |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(1, 1, 5, 4), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
| 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
| 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
| }, |
| }, |
| image.Pt(-3, -2), |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 3, 4), |
| Stride: 3 * 4, |
| Pix: []uint8{ |
| 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0x18, 0x19, 0x1a, 0x1b, |
| 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0x28, 0x29, 0x2a, 0x2b, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, |
| }, |
| }, |
| }, |
| { |
| "Paste 3x4 4x3 no intersection", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 2, 3), |
| Stride: 3 * 4, |
| Pix: []uint8{ |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(1, 1, 5, 4), |
| Stride: 4 * 4, |
| Pix: []uint8{ |
| 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
| 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
| 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
| }, |
| }, |
| image.Pt(-20, 20), |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 3, 4), |
| Stride: 3 * 4, |
| Pix: []uint8{ |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, |
| }, |
| }, |
| }, |
| } |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := Paste(tc.src1, tc.src2, tc.p) |
| if !compareNRGBA(got, tc.want, 0) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
| |
| func BenchmarkPaste(b *testing.B) { |
| b.ReportAllocs() |
| for i := 0; i < b.N; i++ { |
| Paste(testdataBranchesJPG, testdataFlowersSmallPNG, image.Pt(100, 100)) |
| } |
| } |
| |
| func TestPasteCenter(t *testing.T) { |
| testCases := []struct { |
| name string |
| src1 image.Image |
| src2 image.Image |
| want *image.NRGBA |
| }{ |
| { |
| "PasteCenter 2x3 2x1", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(1, 1, 3, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 3), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| }, |
| } |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := PasteCenter(tc.src1, tc.src2) |
| if !compareNRGBA(got, tc.want, 0) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
| |
| func TestOverlay(t *testing.T) { |
| testCases := []struct { |
| name string |
| src1 image.Image |
| src2 image.Image |
| p image.Point |
| a float64 |
| want *image.NRGBA |
| }{ |
| { |
| "Overlay 2x3 2x1 1.0", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0x60, 0x00, 0x90, 0xff, 0xff, 0x00, 0x99, 0x7f, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(1, 1, 3, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x20, 0x40, 0x80, 0x7f, 0xaa, 0xbb, 0xcc, 0xff, |
| }, |
| }, |
| image.Pt(-1, 0), |
| 1.0, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 3), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x00, 0x11, 0x22, 0x33, 0xcc, 0xdd, 0xee, 0xff, |
| 0x40, 0x1f, 0x88, 0xff, 0xaa, 0xbb, 0xcc, 0xff, |
| 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, |
| }, |
| }, |
| }, |
| { |
| "Overlay 2x2 2x2 0.5", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 1), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, |
| 0x00, 0x00, 0xff, 0xff, 0x20, 0x20, 0x20, 0x00, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 1), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, |
| 0xff, 0xff, 0x00, 0xff, 0x20, 0x20, 0x20, 0xff, |
| }, |
| }, |
| image.Pt(-1, -1), |
| 0.5, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0x7f, 0x7f, 0xff, 0x00, 0xff, 0x00, 0xff, |
| 0x7f, 0x7f, 0x7f, 0xff, 0x20, 0x20, 0x20, 0x7f, |
| }, |
| }, |
| }, |
| { |
| "Overlay 2x2 2x2 0.5 no intersection", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 1), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, |
| 0x00, 0x00, 0xff, 0xff, 0x20, 0x20, 0x20, 0x00, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 1), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, |
| 0xff, 0xff, 0x00, 0xff, 0x20, 0x20, 0x20, 0xff, |
| }, |
| }, |
| image.Pt(-10, 10), |
| 0.5, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0xff, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, |
| 0x00, 0x00, 0xff, 0xff, 0x20, 0x20, 0x20, 0x00, |
| }, |
| }, |
| }, |
| } |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := Overlay(tc.src1, tc.src2, tc.p, tc.a) |
| if !compareNRGBA(got, tc.want, 0) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
| |
| func BenchmarkOverlay(b *testing.B) { |
| b.ReportAllocs() |
| for i := 0; i < b.N; i++ { |
| Overlay(testdataBranchesJPG, testdataFlowersSmallPNG, image.Pt(100, 100), 0.5) |
| } |
| } |
| |
| func TestOverlayCenter(t *testing.T) { |
| testCases := []struct { |
| name string |
| src1 image.Image |
| src2 image.Image |
| a float64 |
| want *image.NRGBA |
| }{ |
| { |
| "OverlayCenter 2x3 2x1", |
| &image.NRGBA{ |
| Rect: image.Rect(-1, -1, 1, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x10, 0x10, 0x10, 0xff, 0x10, 0x10, 0x10, 0xff, |
| 0x10, 0x10, 0x10, 0xff, 0x10, 0x10, 0x10, 0xff, |
| 0x10, 0x10, 0x10, 0xff, 0x10, 0x10, 0x10, 0xff, |
| }, |
| }, |
| &image.NRGBA{ |
| Rect: image.Rect(1, 1, 3, 2), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, |
| }, |
| }, |
| 0.5, |
| &image.NRGBA{ |
| Rect: image.Rect(0, 0, 2, 3), |
| Stride: 2 * 4, |
| Pix: []uint8{ |
| 0x10, 0x10, 0x10, 0xff, 0x10, 0x10, 0x10, 0xff, |
| 0x2c, 0x2c, 0x2c, 0xff, 0x2c, 0x2c, 0x2c, 0xff, |
| 0x10, 0x10, 0x10, 0xff, 0x10, 0x10, 0x10, 0xff, |
| }, |
| }, |
| }, |
| } |
| for _, tc := range testCases { |
| t.Run(tc.name, func(t *testing.T) { |
| got := OverlayCenter(tc.src1, tc.src2, 0.5) |
| if !compareNRGBA(got, tc.want, 0) { |
| t.Fatalf("got result %#v want %#v", got, tc.want) |
| } |
| }) |
| } |
| } |
