private StylePen interpolatePen(StylePen min, StylePen max, Double attr)
{
Double frac = fraction(attr);
StyleColor color = StyleColor.Interpolate(min.BackgroundBrush.Color, max.BackgroundBrush.Color, frac);
StylePen pen = new StylePen(color, interpolateDouble(min.Width, max.Width, attr));
pen.MiterLimit = interpolateFloat(min.MiterLimit, max.MiterLimit, attr);
pen.StartCap = (frac > 0.5 ? max.StartCap : min.StartCap);
pen.EndCap = (frac > 0.5 ? max.EndCap : min.EndCap);
pen.LineJoin = (frac > 0.5 ? max.LineJoin : min.LineJoin);
pen.DashStyle = (frac > 0.5 ? max.DashStyle : min.DashStyle);
if (min.DashStyle == LineDashStyle.Custom && max.DashStyle == LineDashStyle.Custom)
{
pen.DashPattern = (frac > 0.5 ? max.DashPattern : min.DashPattern);
}
pen.DashOffset = (frac > 0.5 ? max.DashOffset : min.DashOffset);
pen.DashCap = (frac > 0.5 ? max.DashCap : min.DashCap);
if (min.CompoundArray.Length > 0 && max.CompoundArray.Length > 0)
{
pen.CompoundArray = (frac > 0.5 ? max.CompoundArray : min.CompoundArray);
}
pen.Alignment = (frac > 0.5 ? max.Alignment : min.Alignment);
//pen.CustomStartCap = (frac > 0.5 ? max.CustomStartCap : min.CustomStartCap); //Throws ArgumentException
//pen.CustomEndCap = (frac > 0.5 ? max.CustomEndCap : min.CustomEndCap); //Throws ArgumentException
return(pen);
}
private StyleBrush interpolateBrush(StyleBrush min, StyleBrush max, Double attr)
{
return(new SolidStyleBrush(StyleColor.Interpolate(min.Color, max.Color, fraction(attr))));
}