public void DrawPath(IEnumerable <PathOp> ops, Pen pen = null, Brush brush = null)
{
if (pen == null && brush == null)
{
return;
}
DrawElement(() => {
var bb = new BoundingBoxBuilder();
foreach (var op in ops)
{
var mt = op as MoveTo;
if (mt != null)
{
var p = mt.Point;
if (!IsValid(p.X) || !IsValid(p.Y))
{
continue;
}
context.MoveTo((nfloat)p.X, (nfloat)p.Y);
bb.Add(p);
continue;
}
var lt = op as LineTo;
if (lt != null)
{
var p = lt.Point;
if (!IsValid(p.X) || !IsValid(p.Y))
{
continue;
}
context.AddLineToPoint((nfloat)p.X, (nfloat)p.Y);
bb.Add(p);
continue;
}
var at = op as ArcTo;
if (at != null)
{
var p = at.Point;
if (!IsValid(p.X) || !IsValid(p.Y))
{
continue;
}
var pp = Conversions.GetPoint(context.GetPathCurrentPoint());
if (pp == p)
{
continue;
}
Point c1, c2;
at.GetCircles(pp, out c1, out c2);
var circleCenter = (at.LargeArc ^ at.SweepClockwise) ? c1 : c2;
var startAngle = (float)Math.Atan2(pp.Y - circleCenter.Y, pp.X - circleCenter.X);
var endAngle = (float)Math.Atan2(p.Y - circleCenter.Y, p.X - circleCenter.X);
if (!IsValid(circleCenter.X) || !IsValid(circleCenter.Y) || !IsValid(startAngle) || !IsValid(endAngle))
{
context.MoveTo((nfloat)p.X, (nfloat)p.Y);
continue;
}
var clockwise = !at.SweepClockwise;
context.AddArc((nfloat)circleCenter.X, (nfloat)circleCenter.Y, (nfloat)at.Radius.Min, startAngle, endAngle, clockwise);
bb.Add(p);
continue;
}
var ct = op as CurveTo;
if (ct != null)
{
var p = ct.Point;
if (!IsValid(p.X) || !IsValid(p.Y))
{
continue;
}
var c1 = ct.Control1;
var c2 = ct.Control2;
if (!IsValid(c1.X) || !IsValid(c1.Y) || !IsValid(c2.X) || !IsValid(c2.Y))
{
context.MoveTo((nfloat)p.X, (nfloat)p.Y);
continue;
}
context.AddCurveToPoint((nfloat)c1.X, (nfloat)c1.Y, (nfloat)c2.X, (nfloat)c2.Y, (nfloat)p.X, (nfloat)p.Y);
bb.Add(p);
bb.Add(c1);
bb.Add(c2);
continue;
}
var cp = op as ClosePath;
if (cp != null)
{
context.ClosePath();
continue;
}
throw new NotSupportedException("Path Op " + op);
}
return(bb.BoundingBox);
}, pen, brush);
}
public void DrawPath(IEnumerable <PathOp> ops, Pen pen = null, Brush brush = null)
{
if (pen == null && brush == null)
{
return;
}
DrawElement(() => {
var bb = new BoundingBoxBuilder();
foreach (var op in ops)
{
var mt = op as MoveTo;
if (mt != null)
{
var p = mt.Point;
context.MoveTo((nfloat)p.X, (nfloat)p.Y);
bb.Add(p);
continue;
}
var lt = op as LineTo;
if (lt != null)
{
var p = lt.Point;
context.AddLineToPoint((nfloat)p.X, (nfloat)p.Y);
bb.Add(p);
continue;
}
var at = op as ArcTo;
if (at != null)
{
var p = at.Point;
var pp = Conversions.GetPoint(context.GetPathCurrentPoint());
Point c1, c2;
at.GetCircles(pp, out c1, out c2);
context.AddLineToPoint((nfloat)p.X, (nfloat)p.Y);
bb.Add(p);
continue;
}
var ct = op as CurveTo;
if (ct != null)
{
var p = ct.Point;
var c1 = ct.Control1;
var c2 = ct.Control2;
context.AddCurveToPoint((nfloat)c1.X, (nfloat)c1.Y, (nfloat)c2.X, (nfloat)c2.Y, (nfloat)p.X, (nfloat)p.Y);
bb.Add(p);
bb.Add(c1);
bb.Add(c2);
continue;
}
var cp = op as ClosePath;
if (cp != null)
{
context.ClosePath();
continue;
}
throw new NotSupportedException("Path Op " + op);
}
return(bb.BoundingBox);
}, pen, brush);
}
