610 lines
15 KiB
Go
610 lines
15 KiB
Go
package pixel_test
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import (
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"fmt"
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"reflect"
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"testing"
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"github.com/faiface/pixel"
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)
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var (
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squareAroundOrigin = pixel.R(-10, -10, 10, 10)
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squareAround2020 = pixel.R(10, 10, 30, 30)
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rectangleAroundOrigin = pixel.R(-20, -10, 20, 10)
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rectangleAround2020 = pixel.R(0, 10, 40, 30)
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)
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func TestR(t *testing.T) {
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type args struct {
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minX float64
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minY float64
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maxX float64
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maxY float64
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}
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tests := []struct {
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name string
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args args
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want pixel.Rect
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}{
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{
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name: "R(): square around origin",
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args: args{minX: -10, minY: -10, maxX: 10, maxY: 10},
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want: squareAroundOrigin,
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},
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{
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name: "R(): square around 20 20",
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args: args{minX: 10, minY: 10, maxX: 30, maxY: 30},
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want: squareAround2020,
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},
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{
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name: "R(): rectangle around origin",
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args: args{minX: -20, minY: -10, maxX: 20, maxY: 10},
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want: rectangleAroundOrigin,
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},
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{
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name: "R(): square around 20 20",
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args: args{minX: 0, minY: 10, maxX: 40, maxY: 30},
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want: rectangleAround2020,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := pixel.R(tt.args.minX, tt.args.minY, tt.args.maxX, tt.args.maxY); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("R() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_String(t *testing.T) {
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tests := []struct {
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name string
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r pixel.Rect
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want string
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}{
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{
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name: "Rect.String(): square around origin",
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r: squareAroundOrigin,
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want: "Rect(-10, -10, 10, 10)",
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},
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{
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name: "Rect.String(): square around 20 20",
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r: squareAround2020,
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want: "Rect(10, 10, 30, 30)",
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},
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{
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name: "Rect.String(): rectangle around origin",
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r: rectangleAroundOrigin,
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want: "Rect(-20, -10, 20, 10)",
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},
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{
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name: "Rect.String(): square around 20 20",
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r: rectangleAround2020,
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want: "Rect(0, 10, 40, 30)",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.String(); got != tt.want {
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t.Errorf("Rect.String() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Norm(t *testing.T) {
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tests := []struct {
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name string
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r pixel.Rect
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want pixel.Rect
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}{
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{
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name: "Rect.Norm(): square around origin",
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r: squareAroundOrigin,
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want: squareAroundOrigin,
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},
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{
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name: "Rect.Norm(): square around 20 20",
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r: squareAround2020,
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want: squareAround2020,
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},
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{
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name: "Rect.Norm(): rectangle around origin",
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r: rectangleAroundOrigin,
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want: rectangleAroundOrigin,
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},
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{
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name: "Rect.Norm(): square around 20 20",
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r: rectangleAround2020,
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want: rectangleAround2020,
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},
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{
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name: "Rect.Norm(): square around origin unnormalized",
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r: pixel.Rect{Min: squareAroundOrigin.Max, Max: squareAroundOrigin.Min},
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want: squareAroundOrigin,
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},
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{
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name: "Rect.Norm(): square around 20 20 unnormalized",
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r: pixel.Rect{Min: squareAround2020.Max, Max: squareAround2020.Min},
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want: squareAround2020,
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},
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{
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name: "Rect.Norm(): rectangle around origin unnormalized",
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r: pixel.Rect{Min: rectangleAroundOrigin.Max, Max: rectangleAroundOrigin.Min},
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want: rectangleAroundOrigin,
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},
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{
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name: "Rect.Norm(): square around 20 20 unnormalized",
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r: pixel.Rect{Min: rectangleAround2020.Max, Max: rectangleAround2020.Min},
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want: rectangleAround2020,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.Norm(); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("Rect.Norm() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_W(t *testing.T) {
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tests := []struct {
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name string
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r pixel.Rect
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want float64
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}{
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{
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name: "Rect.W(): square around origin",
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r: squareAroundOrigin,
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want: 20,
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},
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{
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name: "Rect.W(): square around 20 20",
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r: squareAround2020,
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want: 20,
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},
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{
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name: "Rect.W(): rectangle around origin",
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r: rectangleAroundOrigin,
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want: 40,
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},
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{
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name: "Rect.W(): square around 20 20",
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r: rectangleAround2020,
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want: 40,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.W(); got != tt.want {
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t.Errorf("Rect.W() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_H(t *testing.T) {
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tests := []struct {
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name string
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r pixel.Rect
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want float64
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}{
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{
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name: "Rect.H(): square around origin",
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r: squareAroundOrigin,
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want: 20,
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},
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{
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name: "Rect.H(): square around 20 20",
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r: squareAround2020,
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want: 20,
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},
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{
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name: "Rect.H(): rectangle around origin",
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r: rectangleAroundOrigin,
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want: 20,
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},
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{
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name: "Rect.H(): square around 20 20",
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r: rectangleAround2020,
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want: 20,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.H(); got != tt.want {
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t.Errorf("Rect.H() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Size(t *testing.T) {
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tests := []struct {
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name string
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r pixel.Rect
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want pixel.Vec
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}{
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{
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name: "Rect.Size(): square around origin",
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r: squareAroundOrigin,
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want: pixel.V(20, 20),
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},
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{
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name: "Rect.Size(): square around 20 20",
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r: squareAround2020,
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want: pixel.V(20, 20),
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},
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{
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name: "Rect.Size(): rectangle around origin",
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r: rectangleAroundOrigin,
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want: pixel.V(40, 20),
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},
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{
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name: "Rect.Size(): square around 20 20",
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r: rectangleAround2020,
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want: pixel.V(40, 20),
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.Size(); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("Rect.Size() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Area(t *testing.T) {
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tests := []struct {
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name string
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r pixel.Rect
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want float64
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}{
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{
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name: "Rect.Area(): square around origin",
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r: squareAroundOrigin,
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want: 400,
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},
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{
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name: "Rect.Area(): square around 20 20",
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r: squareAround2020,
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want: 400,
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},
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{
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name: "Rect.Area(): rectangle around origin",
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r: rectangleAroundOrigin,
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want: 800,
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},
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{
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name: "Rect.Area(): square around 20 20",
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r: rectangleAround2020,
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want: 800,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.Area(); got != tt.want {
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t.Errorf("Rect.Area() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Center(t *testing.T) {
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tests := []struct {
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name string
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r pixel.Rect
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want pixel.Vec
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}{
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{
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name: "Rect.Center(): square around origin",
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r: squareAroundOrigin,
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want: pixel.V(0, 0),
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},
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{
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name: "Rect.Center(): square around 20 20",
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r: squareAround2020,
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want: pixel.V(20, 20),
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},
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{
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name: "Rect.Center(): rectangle around origin",
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r: rectangleAroundOrigin,
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want: pixel.V(0, 0),
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},
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{
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name: "Rect.Center(): square around 20 20",
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r: rectangleAround2020,
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want: pixel.V(20, 20),
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.Center(); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("Rect.Center() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Moved(t *testing.T) {
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positiveShift := pixel.V(10, 10)
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negativeShift := pixel.V(-10, -10)
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type args struct {
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delta pixel.Vec
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}
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tests := []struct {
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name string
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r pixel.Rect
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args args
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want pixel.Rect
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}{
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{
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name: "Rect.Moved(): positive shift",
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r: squareAroundOrigin,
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args: args{delta: positiveShift},
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want: pixel.R(0, 0, 20, 20),
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},
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{
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name: "Rect.Moved(): negative shift",
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r: squareAroundOrigin,
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args: args{delta: negativeShift},
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want: pixel.R(-20, -20, 0, 0),
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.Moved(tt.args.delta); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("Rect.Moved() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Resized(t *testing.T) {
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// resize transformations
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resizeByHalfAroundCenter := rectTestTransform{"by half around center", func(rect pixel.Rect) pixel.Rect {
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return rect.Resized(rect.Center(), rect.Size().Scaled(0.5))
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}}
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resizeByHalfAroundMin := rectTestTransform{"by half around Min", func(rect pixel.Rect) pixel.Rect {
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return rect.Resized(rect.Min, rect.Size().Scaled(0.5))
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}}
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resizeByHalfAroundMax := rectTestTransform{"by half around Max", func(rect pixel.Rect) pixel.Rect {
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return rect.Resized(rect.Max, rect.Size().Scaled(0.5))
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}}
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resizeByHalfAroundMiddleOfLeftSide := rectTestTransform{"by half around middle of left side", func(rect pixel.Rect) pixel.Rect {
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return rect.Resized(pixel.V(rect.Min.X, rect.Center().Y), rect.Size().Scaled(0.5))
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}}
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resizeByHalfAroundOrigin := rectTestTransform{"by half around the origin", func(rect pixel.Rect) pixel.Rect {
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return rect.Resized(pixel.ZV, rect.Size().Scaled(0.5))
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}}
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testCases := []struct {
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input pixel.Rect
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transform rectTestTransform
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answer pixel.Rect
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}{
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{squareAroundOrigin, resizeByHalfAroundCenter, pixel.R(-5, -5, 5, 5)},
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{squareAround2020, resizeByHalfAroundCenter, pixel.R(15, 15, 25, 25)},
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{rectangleAroundOrigin, resizeByHalfAroundCenter, pixel.R(-10, -5, 10, 5)},
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{rectangleAround2020, resizeByHalfAroundCenter, pixel.R(10, 15, 30, 25)},
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{squareAroundOrigin, resizeByHalfAroundMin, pixel.R(-10, -10, 0, 0)},
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{squareAround2020, resizeByHalfAroundMin, pixel.R(10, 10, 20, 20)},
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{rectangleAroundOrigin, resizeByHalfAroundMin, pixel.R(-20, -10, 0, 0)},
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{rectangleAround2020, resizeByHalfAroundMin, pixel.R(0, 10, 20, 20)},
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{squareAroundOrigin, resizeByHalfAroundMax, pixel.R(0, 0, 10, 10)},
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{squareAround2020, resizeByHalfAroundMax, pixel.R(20, 20, 30, 30)},
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{rectangleAroundOrigin, resizeByHalfAroundMax, pixel.R(0, 0, 20, 10)},
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{rectangleAround2020, resizeByHalfAroundMax, pixel.R(20, 20, 40, 30)},
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{squareAroundOrigin, resizeByHalfAroundMiddleOfLeftSide, pixel.R(-10, -5, 0, 5)},
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{squareAround2020, resizeByHalfAroundMiddleOfLeftSide, pixel.R(10, 15, 20, 25)},
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{rectangleAroundOrigin, resizeByHalfAroundMiddleOfLeftSide, pixel.R(-20, -5, 0, 5)},
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{rectangleAround2020, resizeByHalfAroundMiddleOfLeftSide, pixel.R(0, 15, 20, 25)},
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{squareAroundOrigin, resizeByHalfAroundOrigin, pixel.R(-5, -5, 5, 5)},
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{squareAround2020, resizeByHalfAroundOrigin, pixel.R(5, 5, 15, 15)},
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{rectangleAroundOrigin, resizeByHalfAroundOrigin, pixel.R(-10, -5, 10, 5)},
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{rectangleAround2020, resizeByHalfAroundOrigin, pixel.R(0, 5, 20, 15)},
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}
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for _, testCase := range testCases {
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t.Run(fmt.Sprintf("Resize %v %s", testCase.input, testCase.transform.name), func(t *testing.T) {
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testResult := testCase.transform.f(testCase.input)
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if testResult != testCase.answer {
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t.Errorf("Got: %v, wanted: %v\n", testResult, testCase.answer)
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}
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})
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}
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}
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func TestRect_ResizedMin(t *testing.T) {
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grow := pixel.V(5, 5)
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shrink := pixel.V(-5, -5)
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type args struct {
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size pixel.Vec
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}
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tests := []struct {
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name string
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r pixel.Rect
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args args
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want pixel.Rect
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}{
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{
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name: "Rect.ResizedMin(): square around origin - growing",
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r: squareAroundOrigin,
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args: args{size: grow},
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want: pixel.R(-10, -10, -5, -5),
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},
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{
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name: "Rect.ResizedMin(): square around 20 20 - growing",
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r: squareAround2020,
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args: args{size: grow},
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want: pixel.R(10, 10, 15, 15),
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},
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{
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name: "Rect.ResizedMin(): rectangle around origin - growing",
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r: rectangleAroundOrigin,
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args: args{size: grow},
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want: pixel.R(-20, -10, -15, -5),
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},
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{
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name: "Rect.ResizedMin(): square around 20 20 - growing",
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r: rectangleAround2020,
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args: args{size: grow},
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want: pixel.R(0, 10, 5, 15),
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},
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{
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name: "Rect.ResizedMin(): square around origin - growing",
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r: squareAroundOrigin,
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args: args{size: shrink},
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want: pixel.R(-10, -10, -15, -15),
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},
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{
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name: "Rect.ResizedMin(): square around 20 20 - growing",
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r: squareAround2020,
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args: args{size: shrink},
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want: pixel.R(10, 10, 5, 5),
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},
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{
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name: "Rect.ResizedMin(): rectangle around origin - growing",
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r: rectangleAroundOrigin,
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args: args{size: shrink},
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want: pixel.R(-20, -10, -25, -15),
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},
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{
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name: "Rect.ResizedMin(): square around 20 20 - growing",
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r: rectangleAround2020,
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args: args{size: shrink},
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want: pixel.R(0, 10, -5, 5),
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.ResizedMin(tt.args.size); !reflect.DeepEqual(got, tt.want) {
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t.Errorf("Rect.ResizedMin() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Contains(t *testing.T) {
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type args struct {
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u pixel.Vec
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}
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tests := []struct {
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name string
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r pixel.Rect
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args args
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want bool
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}{
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{
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name: "Rect.Contains(): square and contained vector",
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r: squareAroundOrigin,
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args: args{u: pixel.V(-5, 5)},
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want: true,
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},
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{
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name: "Rect.Contains(): square and seperate vector",
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r: squareAroundOrigin,
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args: args{u: pixel.V(50, 55)},
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want: false,
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},
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{
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name: "Rect.Contains(): square and overlapping vector",
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r: squareAroundOrigin,
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args: args{u: pixel.V(0, 50)},
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want: false,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := tt.r.Contains(tt.args.u); got != tt.want {
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t.Errorf("Rect.Contains() = %v, want %v", got, tt.want)
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}
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})
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}
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}
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func TestRect_Union(t *testing.T) {
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type args struct {
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s pixel.Rect
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}
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tests := []struct {
|
|
name string
|
|
r pixel.Rect
|
|
args args
|
|
want pixel.Rect
|
|
}{
|
|
{
|
|
name: "Rect.Union(): seperate squares",
|
|
r: squareAroundOrigin,
|
|
args: args{s: squareAround2020},
|
|
want: pixel.R(-10, -10, 30, 30),
|
|
},
|
|
{
|
|
name: "Rect.Union(): overlapping squares",
|
|
r: squareAroundOrigin,
|
|
args: args{s: pixel.R(0, 0, 20, 20)},
|
|
want: pixel.R(-10, -10, 20, 20),
|
|
},
|
|
{
|
|
name: "Rect.Union(): square within a square",
|
|
r: squareAroundOrigin,
|
|
args: args{s: pixel.R(-5, -5, 5, 5)},
|
|
want: squareAroundOrigin,
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
if got := tt.r.Union(tt.args.s); !reflect.DeepEqual(got, tt.want) {
|
|
t.Errorf("Rect.Union() = %v, want %v", got, tt.want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestRect_Intersect(t *testing.T) {
|
|
type args struct {
|
|
s pixel.Rect
|
|
}
|
|
tests := []struct {
|
|
name string
|
|
r pixel.Rect
|
|
args args
|
|
want pixel.Rect
|
|
}{
|
|
{
|
|
name: "Rect.Union(): seperate squares",
|
|
r: squareAroundOrigin,
|
|
args: args{s: squareAround2020},
|
|
want: pixel.R(0, 0, 0, 0),
|
|
},
|
|
{
|
|
name: "Rect.Union(): overlapping squares",
|
|
r: squareAroundOrigin,
|
|
args: args{s: pixel.R(0, 0, 20, 20)},
|
|
want: pixel.R(0, 0, 10, 10),
|
|
},
|
|
{
|
|
name: "Rect.Union(): square within a square",
|
|
r: squareAroundOrigin,
|
|
args: args{s: pixel.R(-5, -5, 5, 5)},
|
|
want: pixel.R(-5, -5, 5, 5),
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
if got := tt.r.Intersect(tt.args.s); !reflect.DeepEqual(got, tt.want) {
|
|
t.Errorf("Rect.Intersect() = %v, want %v", got, tt.want)
|
|
}
|
|
})
|
|
}
|
|
}
|