internal void TessellateOutline(float strokeWidth, [CanBeNull] StrokeStyle strokeStyle, [CanBeNull] Matrix3x2?transform, float flatteningTolerance, [NotNull] TessellationSink sink)
{
throw new NotImplementedException();
}
public void Tessellate([CanBeNull] Matrix3x2?transform, float flatteningTolerance, [NotNull] TessellationSink sink)
{
if (!_isUpdateRequired && _triangles != null)
{
sink.AddTriangles(_triangles);
sink.Close();
return;
}
var figures = _figures;
if (figures == null || figures.Length == 0)
{
return;
}
var tess = new Tess();
for (var i = 0; i < figures.Length; ++i)
{
var contour = CreateContourFromFigure(transform, flatteningTolerance, figures[i]);
tess.AddContour(contour);
}
WindingRule winding;
switch (FillMode)
{
case FillMode.Alternate:
winding = WindingRule.EvenOdd;
break;
case FillMode.Winding:
winding = WindingRule.Positive;
break;
default:
throw new ArgumentOutOfRangeException();
}
tess.Tessellate(winding, ElementType.Polygons, 3);
var indices = tess.Elements;
var vertices = tess.Vertices;
var triangles = new Triangle[indices.Length / 3];
var c = 0;
for (var i = 0; i < indices.Length; i += 3)
{
var pos1 = vertices[indices[i]].Position;
var pos2 = vertices[indices[i + 1]].Position;
var pos3 = vertices[indices[i + 2]].Position;
var triangle = new Triangle {
Point1 = new Vector2(pos1.X, pos1.Y),
Point2 = new Vector2(pos2.X, pos2.Y),
Point3 = new Vector2(pos3.X, pos3.Y)
};
triangles[c] = triangle;
++c;
}
_triangles = triangles;
sink.AddTriangles(triangles);
sink.Close();
_isUpdateRequired = false;
}
public void Tessellate([CanBeNull] Matrix3x2?transform, [NotNull] TessellationSink sink)
{
Tessellate(transform, DefaultFlatteningTolerance, sink);
}
public void Tessellate(float flatteningTolerance, [NotNull] TessellationSink sink)
{
Tessellate(null, flatteningTolerance, sink);
}
public void Tessellate([NotNull] TessellationSink sink)
{
Tessellate(null, DefaultFlatteningTolerance, sink);
}
