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)
}
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)
}
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()
}