// Draw this glyph part. gaps is used only for Circle parts, and is a set of gaps in the circle in degrees.
public void Draw(GraphicsTarget g, float[] gaps, RenderOptions renderOpts)
{
float radius;
switch (kind) {
case GlyphPartKind.Line:
if (lineWidth > 0 && path.Length > 0) {
if (pen == null) {
pen = GraphicsUtil.CreateSolidPen(color.ColorValue, lineWidth, lineStyle);
}
path.Draw(g, pen);
}
break;
case GlyphPartKind.Area:
areaPath.Fill(g, color.Brush);
break;
case GlyphPartKind.Circle:
if (lineWidth > 0 && circleDiam > lineWidth) {
if (pen == null) {
pen = GraphicsUtil.CreateSolidPen(color.ColorValue, lineWidth, LineStyle.Mitered);
}
radius = (circleDiam - lineWidth) / 2;
if (gaps == null || gaps.Length == 0) {
g.DrawEllipse(pen, point, radius, radius);
}
else {
// There are gaps in the circle. The arcs to draw are from end of one gap to start of the next.
RectangleF rect = new RectangleF(point.X - radius, point.Y - radius, radius * 2, radius * 2);
for (int i = 1; i < gaps.Length; i += 2) {
float startArc = gaps[i];
float endArc = (i == gaps.Length - 1) ? gaps[0] : gaps[i + 1];
#if false
Point ptStart = new Point(Math.Cos(startArc * Math.PI / 180.0) * radius, Math.Sin(startArc * Math.PI / 180.0) * radius);
Point ptEnd = new Point(Math.Cos(endArc * Math.PI / 180.0) * radius, Math.Sin(endArc * Math.PI / 180.0) * radius);
ArcSegment segment = new ArcSegment(ptEnd, new Size(radius, radius), 0, ((endArc - startArc + 360.0) % 360.0) > 180.0, SweepDirection.Clockwise, true);
PathFigure figure = new PathFigure(ptStart, new PathSegment[] { segment }, false);
PathGeometry geometry = new PathGeometry(new PathFigure[] { figure });
g.DrawingContext.DrawGeometry(null, pen, geometry);
#else
g.Graphics.DrawArc(pen, rect, startArc, (float) ((endArc - startArc + 360.0) % 360.0));
#endif
}
}
}
break;
case GlyphPartKind.FilledCircle:
if (circleDiam > 0) {
radius = circleDiam / 2;
g.FillEllipse(color.Brush, point, radius, radius);
}
break;
}
}
void DrawSimple(GraphicsTarget g, PointF pt, RenderOptions renderOpts)
{
Debug.Assert(parts.Length == 1);
Debug.Assert(parts[0].kind == GlyphPartKind.Circle || parts[0].kind == GlyphPartKind.FilledCircle);
Debug.Assert(parts[0].point.X == 0.0F && parts[0].point.Y == 0.0F);
if (parts[0].kind == GlyphPartKind.Circle) {
if (parts[0].lineWidth > 0 && parts[0].circleDiam > 0) {
if (parts[0].pen == null)
parts[0].pen = GraphicsUtil.CreateSolidPen(parts[0].color.ColorValue, parts[0].lineWidth, LineStyle.Mitered);
float radius = (parts[0].circleDiam - parts[0].lineWidth) / 2;
g.DrawEllipse(parts[0].pen, pt, radius, radius);
}
}
else {
// filled circle
if (parts[0].circleDiam > 0) {
float radius = parts[0].circleDiam / 2;
g.FillEllipse(parts[0].color.Brush, pt, radius, radius);
}
}
}