95 lines
2.3 KiB
Go
95 lines
2.3 KiB
Go
package pixel_test
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import (
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"testing"
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"github.com/faiface/pixel"
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)
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func TestResizeRect(t *testing.T) {
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testCases := []pixel.Rect{
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pixel.R(-10, -10, 10, 10),
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pixel.R(10, 10, 30, 30),
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}
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resizeAroundCenterAnswers := []pixel.Rect{
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pixel.R(-5, -5, 5, 5),
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pixel.R(15, 15, 25, 25),
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}
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for i, rect := range testCases {
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answer := resizeAroundCenterAnswers[i]
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// resize rectangle by 50% anchored at it's current center point
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resizedRect := rect.Resized(rect.Center(), rect.Size().Scaled(0.5))
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if resizedRect != answer {
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t.Errorf("Rectangle resize was incorrect, got %v, want: %v.", resizedRect, answer)
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}
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}
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resizeAroundMinAnswers := []pixel.Rect{
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pixel.R(-10, -10, 0, 0),
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pixel.R(10, 10, 20, 20),
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}
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for i, rect := range testCases {
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answer := resizeAroundMinAnswers[i]
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// resize rectangle by 50% anchored at it's Min coordinate
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resizedRect := rect.Resized(rect.Min, rect.Size().Scaled(0.5))
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if resizedRect != answer {
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t.Errorf("Rectangle resize was incorrect, got %v, want: %v.", resizedRect, answer)
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}
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}
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resizeAroundMaxAnswers := []pixel.Rect{
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pixel.R(0, 0, 10, 10),
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pixel.R(20, 20, 30, 30),
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}
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for i, rect := range testCases {
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answer := resizeAroundMaxAnswers[i]
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// resize rectangle by 50% anchored at it's Max coordinate
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resizedRect := rect.Resized(rect.Max, rect.Size().Scaled(0.5))
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if resizedRect != answer {
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t.Errorf("Rectangle resize was incorrect, got %v, want: %v.", resizedRect, answer)
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}
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}
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resizeAroundMiddleOfLeftSideAnswers := []pixel.Rect{
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pixel.R(-10, -5, 0, 5),
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pixel.R(10, 15, 20, 25),
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}
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for i, rect := range testCases {
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answer := resizeAroundMiddleOfLeftSideAnswers[i]
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// resize rectangle by 50% anchored at the middle of it's left side
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resizedRect := rect.Resized(pixel.V(rect.Min.X, rect.Center().Y), rect.Size().Scaled(0.5))
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if resizedRect != answer {
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t.Errorf("Rectangle resize was incorrect, got %v, want: %v.", resizedRect, answer)
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}
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}
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resizeAroundOriginAnswers := []pixel.Rect{
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pixel.R(-5, -5, 5, 5),
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pixel.R(5, 5, 15, 15),
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}
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for i, rect := range testCases {
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answer := resizeAroundOriginAnswers[i]
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// resize rectangle by 50% anchored at the origin
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resizedRect := rect.Resized(pixel.ZV, rect.Size().Scaled(0.5))
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if resizedRect != answer {
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t.Errorf("Rectangle resize was incorrect, got %v, want: %v.", resizedRect, answer)
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}
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}
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}
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