public static void CubicToLine(IPathRender output, PointF cur, PointF c1, PointF c2, PointF pt,
double resolution)
{
int k = 0;
int l = 0;
var tempSet = new ControlSet[64];
var controlSet = new ControlSet[64];
tempSet[l++] = new ControlSet(cur, c1, c2, pt);
while (l > 0)
{
var control1 = tempSet[--l];
double b = control1.CalcBreadth(resolution);
if (b > resolution)
{
var control3 = control1.Bisect();
tempSet[l++] = control1;
tempSet[l++] = control3;
}
else
{
controlSet[k++] = control1;
}
}
while (k > 0)
{
var control2 = controlSet[--k];
var p = control2.getPoint();
output.Line(cur, p);
cur = p;
}
}
static void Close(IPathRender output, PathRenderFeatures features, PointF cur, PointF start)
{
if ((features & PathRenderFeatures.Close) != 0)
{
output.Close(cur);
}
else
{
output.Line(cur, start);
}
}
public static void Render(GraphicsPath path, IPathRender render, PathRenderFeatures features, float resolution)
{
int n = path.PointCount;
if (n > 0)
{
var bezier = new PointF[3];
int bezierIdx = 0;
var points = path.PathPoints;
var types = path.PathTypes;
var start = PointF.Empty;
var cur = PointF.Empty;
for (int i = 0; i < n; ++i)
{
var type = (PathPointType)types[i];
var pointType = (PathPointType)((int)type & (int)PathPointType.PathTypeMask);
var pt = points[i];
if (type == PathPointType.Start)
{
render.Move(cur, pt);
start = cur = pt;
}
else if (type == PathPointType.CloseSubpath)
{
Close(render, features, cur, start);
cur = start;
}
else if (type == PathPointType.PathMarker)
{
}
else if (pointType == PathPointType.Line)
{
if (i == 0)
{
render.Move(cur, pt);
start = pt;
}
else
{
render.Line(cur, pt);
}
cur = pt;
if (((int)type & (int)PathPointType.CloseSubpath) != 0)
{
Close(render, features, cur, start);
cur = start;
}
}
else if (pointType == PathPointType.Bezier ||
pointType == PathPointType.Bezier3)
{
bezier[bezierIdx++] = pt;
if (bezierIdx == 3)
{
Cubic(render, features, cur, bezier[0], bezier[1], pt, resolution);
cur = pt;
bezierIdx = 0;
if (((int)type & (int)PathPointType.CloseSubpath) != 0)
{
Close(render, features, cur, start);
cur = start;
}
}
}
}
}
}
