static void RenderTo(this GeometryDrawing drawing, d.Graphics graphics, double opacity) {
if (drawing.Geometry == null || drawing.Geometry.IsEmpty()) return;
var path = drawing.Geometry.ToGdiPlus();
var brush = drawing.Brush;
if (brush != null) {
if (!Utility.IsZero(opacity - 1)) {
brush = brush.Clone();
brush.Opacity *= opacity;
}
graphics.FillPath(brush.ToGdiPlus(drawing.Geometry.Bounds), path);
}
var pen = drawing.Pen;
if (pen != null) {
if (!Utility.IsZero(opacity - 1)) {
pen = pen.Clone();
pen.Brush.Opacity *= opacity;
}
graphics.DrawPath(pen.ToGdiPlus(drawing.Geometry.GetRenderBounds(pen)), path);
}
}
