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bezier_test.go
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bezier_test.go
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package gg
import (
"math/rand"
"testing"
)
func quadraticnoasm(x0, y0, x1, y1, x2, y2, ds float64, p []Point) {
var u, a, b, c, t float64
for i := 0; i < len(p); i++ {
t = float64(i) / ds
u = 1 - t
a = u * u
b = 2 * u * t
c = t * t
p[i].X, p[i].Y = a*x0+b*x1+c*x2, a*y0+b*y1+c*y2
}
}
func cubicnoasm(x0, y0, x1, y1, x2, y2, x3, y3, ds float64, p []Point) {
var u, a, b, c, d, t float64
for i := 0; i < len(p); i++ {
t = float64(i) / ds
u = 1 - t
a = u * u * u
b = 3 * u * u * t
c = 3 * u * t * t
d = t * t * t
p[i].X, p[i].Y = a*x0+b*x1+c*x2+d*x3, a*y0+b*y1+c*y2+d*y3
}
}
func TestQuadraticCalc(t *testing.T) {
p1 := make([]Point, 4096)
p2 := make([]Point, 4096)
for i := 0; i < 4096; i++ {
x0, y0, x1, y1, x2, y2, ds := rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64()
quadratic(x0, y0, x1, y1, x2, y2, ds, p1)
quadraticnoasm(x0, y0, x1, y1, x2, y2, ds, p2)
for j := 0; j < 4096; j++ {
if p1[j].X != p2[j].X || p1[j].Y != p2[j].Y {
t.Fatal()
}
}
}
}
func BenchmarkQuadraticCalc(b *testing.B) {
b.Run("16", func(b *testing.B) {
benchmarkQuadratic(b, 16)
})
b.Run("256", func(b *testing.B) {
benchmarkQuadratic(b, 256)
})
b.Run("512", func(b *testing.B) {
benchmarkQuadratic(b, 512)
})
b.Run("1024", func(b *testing.B) {
benchmarkQuadratic(b, 1024)
})
b.Run("2048", func(b *testing.B) {
benchmarkQuadratic(b, 2048)
})
b.Run("4K", func(b *testing.B) {
benchmarkQuadratic(b, 1024*4)
})
b.Run("32K", func(b *testing.B) {
benchmarkQuadratic(b, 1024*32)
})
}
func BenchmarkQuadraticNoASMCalc(b *testing.B) {
b.Run("16", func(b *testing.B) {
benchmarkQuadraticNoASM(b, 16)
})
b.Run("256", func(b *testing.B) {
benchmarkQuadraticNoASM(b, 256)
})
b.Run("512", func(b *testing.B) {
benchmarkQuadraticNoASM(b, 512)
})
b.Run("1024", func(b *testing.B) {
benchmarkQuadraticNoASM(b, 1024)
})
b.Run("2048", func(b *testing.B) {
benchmarkQuadraticNoASM(b, 2048)
})
b.Run("4K", func(b *testing.B) {
benchmarkQuadraticNoASM(b, 1024*4)
})
b.Run("32K", func(b *testing.B) {
benchmarkQuadraticNoASM(b, 1024*32)
})
}
func benchmarkQuadratic(b *testing.B, plen int) {
p := make([]Point, plen)
x0, y0, x1, y1, x2, y2, ds := rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64()
b.ResetTimer()
for i := 0; i < b.N; i++ {
quadratic(x0, y0, x1, y1, x2, y2, ds, p)
}
}
func benchmarkQuadraticNoASM(b *testing.B, plen int) {
p := make([]Point, plen)
x0, y0, x1, y1, x2, y2, ds := rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64()
b.ResetTimer()
for i := 0; i < b.N; i++ {
quadraticnoasm(x0, y0, x1, y1, x2, y2, ds, p)
}
}
func TestCubicCalc(t *testing.T) {
p1 := make([]Point, 4096)
p2 := make([]Point, 4096)
for i := 0; i < 4096; i++ {
x0, y0, x1, y1, x2, y2, x3, y3, ds := rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64()
cubic(x0, y0, x1, y1, x2, y2, x3, y3, ds, p1)
cubicnoasm(x0, y0, x1, y1, x2, y2, x3, y3, ds, p2)
for j := 0; j < 4096; j++ {
if p1[j].X != p2[j].X || p1[j].Y != p2[j].Y {
t.Fatal()
}
}
}
}
func BenchmarkCubicCalc(b *testing.B) {
b.Run("16", func(b *testing.B) {
benchmarkCubic(b, 16)
})
b.Run("256", func(b *testing.B) {
benchmarkCubic(b, 256)
})
b.Run("512", func(b *testing.B) {
benchmarkCubic(b, 512)
})
b.Run("1024", func(b *testing.B) {
benchmarkCubic(b, 1024)
})
b.Run("2048", func(b *testing.B) {
benchmarkCubic(b, 2048)
})
b.Run("4K", func(b *testing.B) {
benchmarkCubic(b, 1024*4)
})
b.Run("32K", func(b *testing.B) {
benchmarkCubic(b, 1024*32)
})
}
func BenchmarkCubicNoASMCalc(b *testing.B) {
b.Run("16", func(b *testing.B) {
benchmarkCubicNoASM(b, 16)
})
b.Run("256", func(b *testing.B) {
benchmarkCubicNoASM(b, 256)
})
b.Run("512", func(b *testing.B) {
benchmarkCubicNoASM(b, 512)
})
b.Run("1024", func(b *testing.B) {
benchmarkCubicNoASM(b, 1024)
})
b.Run("2048", func(b *testing.B) {
benchmarkCubicNoASM(b, 2048)
})
b.Run("4K", func(b *testing.B) {
benchmarkCubicNoASM(b, 1024*4)
})
b.Run("32K", func(b *testing.B) {
benchmarkCubicNoASM(b, 1024*32)
})
}
func benchmarkCubic(b *testing.B, plen int) {
p := make([]Point, plen)
x0, y0, x1, y1, x2, y2, x3, y3, ds := rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64()
b.ResetTimer()
for i := 0; i < b.N; i++ {
cubic(x0, y0, x1, y1, x2, y2, x3, y3, ds, p)
}
}
func benchmarkCubicNoASM(b *testing.B, plen int) {
p := make([]Point, plen)
x0, y0, x1, y1, x2, y2, x3, y3, ds := rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64(), rand.Float64()
b.ResetTimer()
for i := 0; i < b.N; i++ {
cubicnoasm(x0, y0, x1, y1, x2, y2, x3, y3, ds, p)
}
}