minor fix

draw2d/arc.go

@@ -55,13 +55,13 @@ func arcAdder(adder raster.Adder, x, y, rx, ry, start, angle, scale float64) ras
 		if (angle < end-da/4) != clockWise {
 			curX = x + math.Cos(end)*rx
 			curY = y + math.Sin(end)*ry
-			return floatToPoint(curX, curY)
+			return raster.Point{raster.Fix32(curX * 256), raster.Fix32(curY * 256)}
 		}
 		curX = x + math.Cos(angle)*rx
 		curY = y + math.Sin(angle)*ry
 
 		angle += da
-		adder.Add1(floatToPoint(curX, curY))
+		adder.Add1(raster.Point{raster.Fix32(curX * 256), raster.Fix32(curY * 256)})
 	}
-	return floatToPoint(curX, curY)
+	return raster.Point{raster.Fix32(curX * 256), raster.Fix32(curY * 256)}
 }

draw2d/image.go

@@ -139,7 +139,7 @@ func (gc *ImageGraphicContext) Stroke2(paths ...*PathStorage) {
 	pathConverter.Convert(paths...)
 
 	mta := NewMatrixTransformAdder(gc.Current.Tr, gc.strokeRasterizer)
-	raster.Stroke(mta, *rasterPath, raster.Fix32(gc.Current.LineWidth*256), gc.Current.Cap.capper(), gc.Current.Join.joiner())
+	raster.Stroke(mta, *rasterPath, raster.Fix32(gc.Current.LineWidth*256), gc.Current.Cap.Convert(), gc.Current.Join.Convert())
 
 	gc.paint(gc.strokeRasterizer, gc.Current.StrokeColor)
 }
@@ -204,7 +204,7 @@ func (gc *ImageGraphicContext) FillStroke2(paths ...*PathStorage) {
 	pathConverter.Convert(paths...)
 
 	mta := NewMatrixTransformAdder(gc.Current.Tr, gc.strokeRasterizer)
-	raster.Stroke(mta, *rasterPath, raster.Fix32(gc.Current.LineWidth*256), gc.Current.Cap.capper(), gc.Current.Join.joiner())
+	raster.Stroke(mta, *rasterPath, raster.Fix32(gc.Current.LineWidth*256), gc.Current.Cap.Convert(), gc.Current.Join.Convert())
 
 	gc.paint(gc.fillRasterizer, gc.Current.FillColor)
 	gc.paint(gc.strokeRasterizer, gc.Current.StrokeColor)
@@ -241,7 +241,7 @@ func (f FillRule) UseNonZeroWinding() bool {
 	return false
 }
 
-func (c Cap) capper() raster.Capper {
+func (c Cap) Convert() raster.Capper {
 	switch c {
 	case RoundCap:
 		return raster.RoundCapper
@@ -253,7 +253,7 @@ func (c Cap) capper() raster.Capper {
 	return raster.RoundCapper
 }
 
-func (j Join) joiner() raster.Joiner {
+func (j Join) Convert() raster.Joiner {
 	switch j {
 	case RoundJoin:
 		return raster.RoundJoiner

draw2d/path_adder.go

@@ -13,12 +13,6 @@ type VertexAdder struct {
 	adder				  raster.Adder
 }
 
-
-func floatToPoint(x, y float64) raster.Point {
-	return raster.Point{raster.Fix32(x * 256), raster.Fix32(y * 256)}
-}
-
-
 func NewVertexAdder(adder raster.Adder) *VertexAdder {
 	return &VertexAdder{VertexNoCommand, adder}
 }
@@ -40,7 +34,7 @@ func (vertexAdder *VertexAdder) Vertex(x, y float64) {
 
 type PathAdder struct {
 	adder              raster.Adder
-	lastPoint          raster.Point
+	firstPoint          raster.Point
 	ApproximationScale float64
 }
 
@@ -53,37 +47,29 @@ func (pathAdder *PathAdder) Convert(paths ...*PathStorage) {
 	for _, path := range paths {
 		j := 0
 		for _, cmd := range path.commands {
-			j = j + pathAdder.ConvertCommand(cmd, path.vertices[j:]...)
-		}
-	}
-}
-
-
-func (pathAdder *PathAdder) ConvertCommand(cmd PathCmd, vertices ...float64) int {
 			switch cmd {
 			case MoveTo:
-		pathAdder.lastPoint = floatToPoint(vertices[0], vertices[1])
+				pathAdder.firstPoint = raster.Point{raster.Fix32(path.vertices[j] * 256), raster.Fix32(path.vertices[j+1] * 256)}
-		pathAdder.adder.Start(pathAdder.lastPoint)
+				pathAdder.adder.Start(pathAdder.firstPoint)
-		return 2
+				j += 2
 			case LineTo:
-		pathAdder.lastPoint = floatToPoint(vertices[0], vertices[1])
+				pathAdder.adder.Add1(raster.Point{raster.Fix32(path.vertices[j] * 256), raster.Fix32(path.vertices[j+1] * 256)})
-		pathAdder.adder.Add1(pathAdder.lastPoint)
+				j += 2
-		return 2
 			case QuadCurveTo:
-		pathAdder.lastPoint = floatToPoint(vertices[2], vertices[3])
+				pathAdder.adder.Add2(raster.Point{raster.Fix32(path.vertices[j] * 256), raster.Fix32(path.vertices[j+1] * 256)}, raster.Point{raster.Fix32(path.vertices[j+2] * 256), raster.Fix32(path.vertices[j+3] * 256)})
-		pathAdder.adder.Add2(floatToPoint(vertices[0], vertices[1]), pathAdder.lastPoint)
+				j += 4
-		return 4
 			case CubicCurveTo:
-		pathAdder.lastPoint = floatToPoint(vertices[4], vertices[5])
+				pathAdder.adder.Add3(raster.Point{raster.Fix32(path.vertices[j] * 256), raster.Fix32(path.vertices[j+1] * 256)}, raster.Point{raster.Fix32(path.vertices[j+2] * 256), raster.Fix32(path.vertices[j+3] * 256)}, raster.Point{raster.Fix32(path.vertices[j+4] * 256), raster.Fix32(path.vertices[j+5] * 256)})
-		pathAdder.adder.Add3(floatToPoint(vertices[0], vertices[1]), floatToPoint(vertices[2], vertices[3]), pathAdder.lastPoint)
+				j += 6
-		return 6
 			case ArcTo:
-		pathAdder.lastPoint = arcAdder(pathAdder.adder, vertices[0], vertices[1], vertices[2], vertices[3], vertices[4], vertices[5], pathAdder.ApproximationScale)
+				lastPoint := arcAdder(pathAdder.adder, path.vertices[j], path.vertices[j+1], path.vertices[j+2], path.vertices[j+3], path.vertices[j+4], path.vertices[j+5], pathAdder.ApproximationScale)
-		pathAdder.adder.Add1(pathAdder.lastPoint)
+				pathAdder.adder.Add1(lastPoint)
-		return 6
+				j += 6
 			case Close:
-		pathAdder.adder.Add1(pathAdder.lastPoint)
+				pathAdder.adder.Add1(pathAdder.firstPoint)
-		return 0
+			}
+		}
 	}
-	return 0
 }
+
+

draw2d/transform.go

@@ -26,6 +26,15 @@ func (tr MatrixTransform) Transform(points ...*float64) {
 	}
 }
 
+func (tr MatrixTransform) TransformArray(points []float64) {
+	for i, j := 0, 1; j < len(points); i, j = i+2, j+2 {
+		x := points[i]
+		y := points[j]
+		points[i] = x*tr[0] + y*tr[2] + tr[4]
+		points[j] = x*tr[1] + y*tr[3] + tr[5]
+	}
+}
+
 func (tr MatrixTransform) TransformRectangle(x0, y0, x2, y2 *float64) {
 	x1 := *x2
 	y1 := *y0

draw2dgl/gc.go

@@ -110,6 +110,7 @@ func NewGLPainter() *GLPainter {
 	return p
 }
 
+
 type GraphicContext struct {
 	*draw2d.StackGraphicContext
 	painter          *GLPainter
@@ -117,6 +118,23 @@ type GraphicContext struct {
 	strokeRasterizer *raster.Rasterizer
 }
 
+type GLVertex struct {
+	x, y float64
+}
+
+
+func NewGLVertex() *GLVertex {
+	return &GLVertex{}
+}
+
+func (glVertex *GLVertex) NextCommand(cmd draw2d.VertexCommand) {
+
+}
+
+func (glVertex *GLVertex) Vertex(x, y float64) {
+	gl.Vertex2d(x, y)
+}
+
 /**
  * Create a new Graphic context from an image
  */
@@ -150,7 +168,6 @@ func (gc *GraphicContext) DrawImage(img image.Image) {
 
 }
 
-
 func (gc *GraphicContext) FillString(text string) (cursor float64) {
 	return 0
 }
@@ -163,7 +180,7 @@ func (gc *GraphicContext) paint(rasterizer *raster.Rasterizer, color image.Color
 	gc.painter.Flush()
 }
 
-func (gc *GraphicContext) Stroke(paths ...*draw2d.PathStorage) {
+func (gc *GraphicContext) Stroke(paths ...*draw2d.PathStorage){
 	paths = append(paths, gc.Current.Path)
 	gc.strokeRasterizer.UseNonZeroWinding = true
 
@@ -194,6 +211,19 @@ func (gc *GraphicContext) Fill(paths ...*draw2d.PathStorage) {
 	gc.paint(gc.fillRasterizer, gc.Current.FillColor)
 	gc.Current.Path.Clear()
 }
+/*
+func (gc *GraphicContext) Fill(paths ...*draw2d.PathStorage) {
+	paths = append(paths, gc.Current.Path)
+	gc.fillRasterizer.UseNonZeroWinding = gc.Current.FillRule.UseNonZeroWinding()
+
+	pathConverter := draw2d.NewPathAdder(draw2d.NewMatrixTransformAdder(gc.Current.Tr, gc.fillRasterizer))
+	pathConverter.ApproximationScale = gc.Current.Tr.GetScale()
+	pathConverter.Convert(paths...)
+
+	gc.paint(gc.fillRasterizer, gc.Current.FillColor)
+	gc.Current.Path.Clear()
+}
+*/
 
 func (gc *GraphicContext) FillStroke(paths ...*draw2d.PathStorage) {
 	gc.fillRasterizer.UseNonZeroWinding = gc.Current.FillRule.UseNonZeroWinding()