64 lines
1.2 KiB
Go
64 lines
1.2 KiB
Go
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package pixel_test
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import (
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"math/rand"
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"testing"
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"github.com/faiface/pixel"
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)
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func BenchmarkMatrix(b *testing.B) {
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b.Run("Moved", func(b *testing.B) {
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m := pixel.IM
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for i := 0; i < b.N; i++ {
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m = m.Moved(pixel.V(4.217, -132.99))
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}
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})
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b.Run("ScaledXY", func(b *testing.B) {
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m := pixel.IM
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for i := 0; i < b.N; i++ {
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m = m.ScaledXY(pixel.V(-5.1, 9.3), pixel.V(2.1, 0.98))
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}
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})
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b.Run("Rotated", func(b *testing.B) {
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m := pixel.IM
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for i := 0; i < b.N; i++ {
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m = m.Rotated(pixel.V(-5.1, 9.3), 1.4)
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}
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})
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b.Run("Chained", func(b *testing.B) {
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var m1, m2 pixel.Matrix
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for i := range m1 {
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m1[i] = rand.Float64()
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m2[i] = rand.Float64()
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}
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for i := 0; i < b.N; i++ {
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m1 = m1.Chained(m2)
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}
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})
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b.Run("Project", func(b *testing.B) {
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var m pixel.Matrix
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for i := range m {
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m[i] = rand.Float64()
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}
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u := pixel.V(1, 1)
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for i := 0; i < b.N; i++ {
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u = m.Project(u)
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}
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})
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b.Run("Unproject", func(b *testing.B) {
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again:
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var m pixel.Matrix
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for i := range m {
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m[i] = rand.Float64()
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}
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if (m[0]*m[3])-(m[1]*m[2]) == 0 { // zero determinant, not invertible
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goto again
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}
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u := pixel.V(1, 1)
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for i := 0; i < b.N; i++ {
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u = m.Unproject(u)
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}
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})
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}
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