示例#1
0
func drawPolyLine(img *image.RGBA, color color.Color, coords [][]float64) {
	path := draw2d.NewPathStorage()
	for i, coord := range coords {
		if i == 0 {
			path.MoveTo(coord[0], coord[1])
		} else {
			path.LineTo(coord[0], coord[1])
		}
	}
	gc := draw2d.NewGraphicContext(img)
	gc.SetStrokeColor(color)
	gc.Stroke(path)
}
示例#2
0
func (s *PngDebugDraw) DrawShape(shape *figo.Shape, mass, vel, acc float32) {
	ps := draw2d.NewPathStorage()
	data := shape.TransformedVertices()
	_x, _y := 0.0, 0.0
	for i := 0; i < len(data); i += 2 {
		x := float64((data[i] + s.offset.X) * s.DecToPix)
		y := float64((data[i+1] + s.offset.Y) * s.DecToPix)
		if i == 0 {
			_x, _y = x, y
			ps.MoveTo(x, y)
		} else {
			ps.LineTo(x, y)
		}
	}
	ps.LineTo(_x, _y)
	s.ctx.SetFillColor(color.RGBA{R: 255, A: 255})
	s.ctx.FillStroke(ps)
}
示例#3
0
文件: gc.go 项目: xushiwei/draw2d
func (gc *GraphicContext) FillStroke(paths ...*draw2d.PathStorage) {
	gc.fillRasterizer.UseNonZeroWinding = gc.Current.FillRule.UseNonZeroWinding()
	gc.strokeRasterizer.UseNonZeroWinding = true

	filler := draw2d.NewVertexMatrixTransform(gc.Current.Tr, draw2d.NewVertexAdder(gc.fillRasterizer))

	stroker := draw2d.NewLineStroker(gc.Current.Cap, gc.Current.Join, draw2d.NewVertexMatrixTransform(gc.Current.Tr, draw2d.NewVertexAdder(gc.strokeRasterizer)))
	stroker.HalfLineWidth = gc.Current.LineWidth / 2

	demux := draw2d.NewDemuxConverter(filler, stroker)
	paths = append(paths, gc.Current.Path)
	pathConverter := draw2d.NewPathConverter(demux)
	pathConverter.ApproximationScale = gc.Current.Tr.GetScale() // From agg code
	pathConverter.Convert(paths...)

	gc.paint(gc.fillRasterizer, gc.Current.FillColor)
	gc.paint(gc.strokeRasterizer, gc.Current.StrokeColor)
	gc.Current.Path = draw2d.NewPathStorage()
}