public void PaintMarker(GdiGraphicsRenderer renderer, GdiGraphicsWrapper gr,
SvgMarkerPosition markerPos, SvgStyleableElement refElement)
{
ISharpMarkerHost markerHostElm = (ISharpMarkerHost)refElement;
SvgMarkerElement markerElm = (SvgMarkerElement) element;
SvgPointF[] vertexPositions = markerHostElm.MarkerPositions;
int start;
int len;
// Choose which part of the position array to use
switch (markerPos)
{
case SvgMarkerPosition.Start:
start = 0;
len = 1;
break;
case SvgMarkerPosition.Mid:
start = 1;
len = vertexPositions.Length - 2;
break;
default:
// == MarkerPosition.End
start = vertexPositions.Length-1;
len = 1;
break;
}
for (int i = start; i < start+len; i++)
{
SvgPointF point = vertexPositions[i];
GdiGraphicsContainer gc = gr.BeginContainer();
gr.TranslateTransform(point.X, point.Y);
if (markerElm.OrientType.AnimVal.Equals(SvgMarkerOrient.Angle))
{
gr.RotateTransform((float)markerElm.OrientAngle.AnimVal.Value);
}
else
{
double angle;
switch(markerPos)
{
case SvgMarkerPosition.Start:
angle = markerHostElm.GetStartAngle(i + 1);
break;
case SvgMarkerPosition.Mid:
//angle = (markerHostElm.GetEndAngle(i) + markerHostElm.GetStartAngle(i + 1)) / 2;
angle = SvgNumber.CalcAngleBisection(markerHostElm.GetEndAngle(i), markerHostElm.GetStartAngle(i + 1));
break;
default:
angle = markerHostElm.GetEndAngle(i);
break;
}
gr.RotateTransform((float)angle);
}
if (markerElm.MarkerUnits.AnimVal.Equals(SvgMarkerUnit.StrokeWidth))
{
SvgLength strokeWidthLength = new SvgLength(refElement,
"stroke-width", SvgLengthSource.Css, SvgLengthDirection.Viewport, "1");
float strokeWidth = (float)strokeWidthLength.Value;
gr.ScaleTransform(strokeWidth, strokeWidth);
}
SvgPreserveAspectRatio spar =
(SvgPreserveAspectRatio)markerElm.PreserveAspectRatio.AnimVal;
double[] translateAndScale = spar.FitToViewBox((SvgRect)markerElm.ViewBox.AnimVal,
new SvgRect(0, 0, markerElm.MarkerWidth.AnimVal.Value,
markerElm.MarkerHeight.AnimVal.Value));
gr.TranslateTransform(-(float)(markerElm.RefX.AnimVal.Value * translateAndScale[2]),
-(float)(markerElm.RefY.AnimVal.Value * translateAndScale[3]));
gr.ScaleTransform((float)translateAndScale[2], (float)translateAndScale[3]);
Clip(gr);
renderer.RenderChildren(markerElm);
gr.EndContainer(gc);
}
}
public void PaintMarker(GdiGraphicsRenderer renderer, GdiGraphicsWrapper gr,
SvgMarkerPosition markerPos, SvgStyleableElement refElement)
{
ISharpMarkerHost markerHostElm = (ISharpMarkerHost)refElement;
SvgMarkerElement markerElm = (SvgMarkerElement)element;
SvgPointF[] vertexPositions = markerHostElm.MarkerPositions;
int start;
int len;
// Choose which part of the position array to use
switch (markerPos)
{
case SvgMarkerPosition.Start:
start = 0;
len = 1;
break;
case SvgMarkerPosition.Mid:
start = 1;
len = vertexPositions.Length - 2;
break;
default:
// == MarkerPosition.End
start = vertexPositions.Length - 1;
len = 1;
break;
}
for (int i = start; i < start + len; i++)
{
SvgPointF point = vertexPositions[i];
GdiGraphicsContainer gc = gr.BeginContainer();
gr.TranslateTransform(point.X, point.Y);
if (markerElm.OrientType.AnimVal.Equals((ushort)SvgMarkerOrient.Angle))
{
gr.RotateTransform((float)markerElm.OrientAngle.AnimVal.Value);
}
else
{
double angle;
switch (markerPos)
{
case SvgMarkerPosition.Start:
angle = markerHostElm.GetStartAngle(i + 1);
break;
case SvgMarkerPosition.Mid:
//angle = (markerHostElm.GetEndAngle(i) + markerHostElm.GetStartAngle(i + 1)) / 2;
angle = SvgNumber.CalcAngleBisection(markerHostElm.GetEndAngle(i), markerHostElm.GetStartAngle(i + 1));
break;
default:
angle = markerHostElm.GetEndAngle(i);
break;
}
gr.RotateTransform((float)angle);
}
if (markerElm.MarkerUnits.AnimVal.Equals((ushort)SvgMarkerUnit.StrokeWidth))
{
SvgLength strokeWidthLength = new SvgLength(refElement,
"stroke-width", SvgLengthSource.Css, SvgLengthDirection.Viewport, "1");
float strokeWidth = (float)strokeWidthLength.Value;
gr.ScaleTransform(strokeWidth, strokeWidth);
}
SvgPreserveAspectRatio spar = (SvgPreserveAspectRatio)markerElm.PreserveAspectRatio.AnimVal;
double[] translateAndScale = spar.FitToViewBox((SvgRect)markerElm.ViewBox.AnimVal,
new SvgRect(0, 0, markerElm.MarkerWidth.AnimVal.Value,
markerElm.MarkerHeight.AnimVal.Value));
gr.TranslateTransform(-(float)(markerElm.RefX.AnimVal.Value * translateAndScale[2]),
-(float)(markerElm.RefY.AnimVal.Value * translateAndScale[3]));
gr.ScaleTransform((float)translateAndScale[2], (float)translateAndScale[3]);
Clip(gr);
renderer.RenderChildren(markerElm);
gr.EndContainer(gc);
}
}