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package raster
import (
"bufio"
"code.google.com/p/draw2d/draw2d/curve"
"code.google.com/p/freetype-go/freetype/raster"
"image"
"image/color"
"image/png"
"log"
"os"
"testing"
)
var flattening_threshold float64 = 0.5
func savepng(filePath string, m image.Image) {
f, err := os.Create(filePath)
if err != nil {
log.Println(err)
os.Exit(1)
}
defer f.Close()
b := bufio.NewWriter(f)
err = png.Encode(b, m)
if err != nil {
log.Println(err)
os.Exit(1)
}
err = b.Flush()
if err != nil {
log.Println(err)
os.Exit(1)
}
}
type Path struct {
points []float64
}
func (p *Path) LineTo(x, y float64) {
if len(p.points)+2 > cap(p.points) {
points := make([]float64, len(p.points)+2, len(p.points)+32)
copy(points, p.points)
p.points = points
} else {
p.points = p.points[0 : len(p.points)+2]
}
p.points[len(p.points)-2] = x
p.points[len(p.points)-1] = y
}
func TestFreetype(t *testing.T) {
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
rasterizer := raster.NewRasterizer(200, 200)
rasterizer.UseNonZeroWinding = false
rasterizer.Start(raster.Point{raster.Fix32(10 * 256), raster.Fix32(190 * 256)})
for j := 0; j < len(poly); j = j + 2 {
rasterizer.Add1(raster.Point{raster.Fix32(poly[j] * 256), raster.Fix32(poly[j+1] * 256)})
}
painter := raster.NewRGBAPainter(img)
painter.SetColor(color)
rasterizer.Rasterize(painter)
savepng("_testFreetype.png", img)
}
func TestFreetypeNonZeroWinding(t *testing.T) {
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
rasterizer := raster.NewRasterizer(200, 200)
rasterizer.UseNonZeroWinding = true
rasterizer.Start(raster.Point{raster.Fix32(10 * 256), raster.Fix32(190 * 256)})
for j := 0; j < len(poly); j = j + 2 {
rasterizer.Add1(raster.Point{raster.Fix32(poly[j] * 256), raster.Fix32(poly[j+1] * 256)})
}
painter := raster.NewRGBAPainter(img)
painter.SetColor(color)
rasterizer.Rasterize(painter)
savepng("_testFreetypeNonZeroWinding.png", img)
}
func TestRasterizer(t *testing.T) {
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
tr := [6]float64{1, 0, 0, 1, 0, 0}
r := NewRasterizer8BitsSample(200, 200)
//PolylineBresenham(img, image.Black, poly...)
r.RenderEvenOdd(img, &color, &poly, tr)
savepng("_testRasterizer.png", img)
}
func TestRasterizerNonZeroWinding(t *testing.T) {
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
tr := [6]float64{1, 0, 0, 1, 0, 0}
r := NewRasterizer8BitsSample(200, 200)
//PolylineBresenham(img, image.Black, poly...)
r.RenderNonZeroWinding(img, &color, &poly, tr)
savepng("_testRasterizerNonZeroWinding.png", img)
}
func BenchmarkFreetype(b *testing.B) {
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
for i := 0; i < b.N; i++ {
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
rasterizer := raster.NewRasterizer(200, 200)
rasterizer.UseNonZeroWinding = false
rasterizer.Start(raster.Point{raster.Fix32(10 * 256), raster.Fix32(190 * 256)})
for j := 0; j < len(poly); j = j + 2 {
rasterizer.Add1(raster.Point{raster.Fix32(poly[j] * 256), raster.Fix32(poly[j+1] * 256)})
}
painter := raster.NewRGBAPainter(img)
painter.SetColor(color)
rasterizer.Rasterize(painter)
}
}
func BenchmarkFreetypeNonZeroWinding(b *testing.B) {
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
for i := 0; i < b.N; i++ {
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
rasterizer := raster.NewRasterizer(200, 200)
rasterizer.UseNonZeroWinding = true
rasterizer.Start(raster.Point{raster.Fix32(10 * 256), raster.Fix32(190 * 256)})
for j := 0; j < len(poly); j = j + 2 {
rasterizer.Add1(raster.Point{raster.Fix32(poly[j] * 256), raster.Fix32(poly[j+1] * 256)})
}
painter := raster.NewRGBAPainter(img)
painter.SetColor(color)
rasterizer.Rasterize(painter)
}
}
func BenchmarkRasterizerNonZeroWinding(b *testing.B) {
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
tr := [6]float64{1, 0, 0, 1, 0, 0}
for i := 0; i < b.N; i++ {
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
rasterizer := NewRasterizer8BitsSample(200, 200)
rasterizer.RenderNonZeroWinding(img, &color, &poly, tr)
}
}
func BenchmarkRasterizer(b *testing.B) {
var p Path
p.LineTo(10, 190)
c := curve.CubicCurveFloat64{10, 190, 10, 10, 190, 10, 190, 190}
c.Segment(&p, flattening_threshold)
poly := Polygon(p.points)
color := color.RGBA{0, 0, 0, 0xff}
tr := [6]float64{1, 0, 0, 1, 0, 0}
for i := 0; i < b.N; i++ {
img := image.NewRGBA(image.Rect(0, 0, 200, 200))
rasterizer := NewRasterizer8BitsSample(200, 200)
rasterizer.RenderEvenOdd(img, &color, &poly, tr)
}
}
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