Pixel drawing.
https://pkg.go.dev/maze.io/x/pixel
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406 lines
12 KiB
406 lines
12 KiB
package pixel
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import (
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"image"
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"image/color"
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"reflect"
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"testing"
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)
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var testColor = color.RGBA{R: 0x55, G: 0xaa, B: 0xff, A: 0x33}
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func TestFill(t *testing.T) {
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tests := []struct {
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Test Image
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Want Image
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}{
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{
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NewBitmap(8, 8),
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&Bitmap{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
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Stride: 8,
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Format: MVLSBFormat,
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},
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},
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{
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NewRGB565(5, 5),
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&RGB565{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f,
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0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f,
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0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f,
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0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f,
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0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f,
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},
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Stride: 10,
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},
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},
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{
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NewRGB888(3, 3),
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&RGB888{
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Rect: image.Rectangle{Max: image.Point{X: 3, Y: 3}},
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Pix: []byte{
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0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff,
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0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff,
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0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff,
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},
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Stride: 9,
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},
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},
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}
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for _, test := range tests {
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t.Run(reflect.TypeOf(test.Test).Elem().String(), func(it *testing.T) {
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Fill(test.Test, testColor)
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if !reflect.DeepEqual(test.Test, test.Want) {
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it.Fatalf("expected %T:\n%+v\ngot %T:\n%+v", test.Want, test.Want, test.Test, test.Test)
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}
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})
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}
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}
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func TestFillRectangle(t *testing.T) {
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tests := []struct {
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Test Image
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Want Image
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}{
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{
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NewBitmap(8, 8),
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&Bitmap{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{
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0b00000011,
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0b00000011,
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0b00000000,
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0b00000000,
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0b00000000,
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0b00000000,
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0b00000000,
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0b00000000,
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},
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Stride: 8,
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Format: MVLSBFormat,
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},
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},
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{
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NewRGB565(5, 5),
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&RGB565{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x55, 0x5f, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x55, 0x5f, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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Stride: 10,
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},
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},
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{
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NewRGB888(3, 3),
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&RGB888{
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Rect: image.Rectangle{Max: image.Point{X: 3, Y: 3}},
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Pix: []byte{
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0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00,
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0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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Stride: 9,
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},
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},
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}
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for _, test := range tests {
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t.Run(reflect.TypeOf(test.Test).Elem().String(), func(it *testing.T) {
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FillRectangle(test.Test, image.Rect(0, 0, 2, 2), testColor)
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if !reflect.DeepEqual(test.Test, test.Want) {
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it.Fatalf("expected %T:\n%+v\ngot %T:\n%+v", test.Want, test.Want, test.Test, test.Test)
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}
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})
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}
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}
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func TestHLine(t *testing.T) {
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tests := []struct {
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Test Image
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Want Image
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}{
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{
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NewBitmap(8, 8),
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&Bitmap{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{
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0b00000000,
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0b00000100,
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0b00000100,
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0b00000100,
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0b00000100,
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0b00000100,
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0b00000100,
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0b00000100,
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},
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Stride: 8,
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Format: MVLSBFormat,
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},
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},
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{
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NewRGB565(5, 5),
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&RGB565{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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Stride: 10,
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},
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},
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{
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NewRGB888(5, 5),
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&RGB888{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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Stride: 15,
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},
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},
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}
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for _, test := range tests {
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t.Run(reflect.TypeOf(test.Test).Elem().String(), func(it *testing.T) {
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HLine(test.Test, image.Pt(1, 2), 10, testColor)
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if !reflect.DeepEqual(test.Test, test.Want) {
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it.Fatalf("expected %T:\n%+v\ngot %T:\n%+v", test.Want, test.Want, test.Test, test.Test)
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}
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})
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}
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}
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func TestVLine(t *testing.T) {
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tests := []struct {
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Test Image
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Want Image
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}{
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{
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NewBitmap(8, 8),
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&Bitmap{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{
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0b00000000,
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0b11111100,
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0b00000000,
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0b00000000,
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0b00000000,
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0b00000000,
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0b00000000,
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0b00000000,
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},
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Stride: 8,
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Format: MVLSBFormat,
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},
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},
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{
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NewRGB565(5, 5),
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&RGB565{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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Stride: 10,
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},
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},
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{
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NewRGB888(5, 5),
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&RGB888{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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Stride: 15,
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},
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},
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}
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for _, test := range tests {
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t.Run(reflect.TypeOf(test.Test).Elem().String(), func(it *testing.T) {
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VLine(test.Test, image.Pt(1, 2), 10, testColor)
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if !reflect.DeepEqual(test.Test, test.Want) {
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it.Fatalf("expected %T:\n%+v\ngot %T:\n%+v", test.Want, test.Want, test.Test, test.Test)
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}
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})
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}
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}
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func TestLine(t *testing.T) {
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tests := []struct {
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Test Image
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Want Image
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}{
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{
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NewBitmap(8, 8),
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&Bitmap{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{
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0b00000000,
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0b00000010,
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0b00000100,
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0b00001000,
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0b00010000,
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0b00100000,
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0b01000000,
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0b10000000,
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},
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Stride: 8,
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Format: MVLSBFormat,
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},
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},
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{
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NewRGB565(5, 5),
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&RGB565{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x5f, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x5f,
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},
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Stride: 10,
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},
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},
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{
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NewRGB888(5, 5),
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&RGB888{
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Rect: image.Rectangle{Max: image.Point{X: 5, Y: 5}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0xff,
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},
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Stride: 15,
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},
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},
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}
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for _, test := range tests {
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t.Run(reflect.TypeOf(test.Test).Elem().String(), func(it *testing.T) {
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Line(test.Test, image.Pt(1, 1), image.Pt(10, 10), testColor)
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if !reflect.DeepEqual(test.Test, test.Want) {
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it.Fatalf("expected %T:\n%+v\ngot %T:\n%+v", test.Want, test.Want, test.Test, test.Test)
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}
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})
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}
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}
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func TestCircle(t *testing.T) {
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tests := []struct {
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Test Image
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Want Image
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}{
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{
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NewBitmap(8, 8),
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&Bitmap{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{
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0b00000000,
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0b01110000,
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0b10001100,
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0b00000100,
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0b00000010,
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0b00000010,
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0b00000010,
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0b00000100,
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},
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Stride: 8,
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Format: MVLSBFormat,
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},
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},
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{
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NewRGB565(8, 8),
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&RGB565{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x5f, 0x55, 0x5f, 0x55, 0x5f, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x55, 0x5f, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x5f,
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0x00, 0x00, 0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x55, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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Stride: 16,
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},
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},
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{
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NewRGB888(8, 8),
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&RGB888{
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Rect: image.Rectangle{Max: image.Point{X: 8, Y: 8}},
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Pix: []byte{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x55, 0xaa, 0xff,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0xff,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
},
|
|
Stride: 24,
|
|
},
|
|
},
|
|
}
|
|
for _, test := range tests {
|
|
t.Run(reflect.TypeOf(test.Test).Elem().String(), func(it *testing.T) {
|
|
Circle(test.Test, image.Pt(5, 5), 4, testColor)
|
|
if !reflect.DeepEqual(test.Test, test.Want) {
|
|
it.Fatalf("expected %T:\n%+v\ngot %T:\n%+v", test.Want, test.Want, test.Test, test.Test)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
/*
|
|
// Only used for debugging tests:
|
|
func testOutput(t *testing.T, i Image) {
|
|
t.Helper()
|
|
f, err := os.Create(reflect.TypeOf(i).Elem().String() + ".png")
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
if err = png.Encode(f, i); err != nil {
|
|
_ = f.Close()
|
|
_ = os.Remove(f.Name())
|
|
t.Error(err)
|
|
return
|
|
}
|
|
if err = f.Close(); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
t.Logf("saved as %s", f.Name())
|
|
}
|
|
*/
|