private void RefreshAsset(PolygonSet polygons)
{
_sw.Reset();
foreach (var poly in polygons)
{
var v = new ContourVertex[poly.Count];
for (int i = 0; i < poly.Count; i++)
{
v[i].Position = new Vec3 {
X = poly[i].X, Y = poly[i].Y, Z = poly[i].Z
};
v[i].Data = poly[i].Color;
}
_sw.Start();
_tess.AddContour(v, poly.Orientation);
_sw.Stop();
}
_sw.Start();
_tess.Tessellate(_windingRule, ElementType.Polygons, _polySize, VertexCombine);
_sw.Stop();
var output = new PolygonSet();
for (int i = 0; i < _tess.ElementCount; i++)
{
var poly = new Polygon();
for (int j = 0; j < _polySize; j++)
{
int index = _tess.Elements[i * _polySize + j];
if (index == -1)
{
continue;
}
var proj = Project(_tess.Vertices[index].Position);
var v = new PolygonPoint {
X = proj.X,
Y = proj.Y,
Color = (Color)_tess.Vertices[index].Data
};
poly.Add(v);
}
output.Add(poly);
}
var input = new PolygonSet();
foreach (var poly in polygons)
{
var projPoly = new Polygon();
for (int i = 0; i < poly.Count; i++)
{
var proj = Project(new Vec3 {
X = poly[i].X, Y = poly[i].Y, Z = poly[i].Z
});
var v = new PolygonPoint {
X = proj.X,
Y = proj.Y,
Color = poly[i].Color
};
projPoly.Add(v);
}
input.Add(projPoly);
}
statusMain.Text = string.Format("{0:F3} ms - {1} polygons (of {2} vertices) {3}", _sw.Elapsed.TotalMilliseconds, _tess.ElementCount, _polySize, _polySize == 3 ? "... triangles" : "");
_canvas.Input = input;
_canvas.Output = output;
_canvas.Invalidate();
}