private void VoronoiButton_Click(object sender, RoutedEventArgs e)
{
Random rng = null;
if (VoronoiSeedBox.Text.IsNumeric())
{
int seed = int.Parse(VoronoiSeedBox.Text);
rng = new Random(seed);
}
else
{
rng = new Random();
}
BoundingBox box = new BoundingBox(0, 10, -10, 0, 0, 0);
int size = 500;
Geometry.Vector[] points = box.RandomPointsInside(rng, size);
VertexCollection verts = new VertexCollection(points);
MeshFaceCollection faces = Mesh.DelaunayTriangulationXY(verts, null, box, false);
Dictionary <Vertex, MeshFace> voronoi = Mesh.VoronoiFromDelaunay(verts, faces);
MeshFaceCollection outFaces = new MeshFaceCollection(voronoi.Values);
PolyLine rect = PolyLine.Rectangle(0, -10, 10, 0);
outFaces = outFaces.TrimToPolygonXY(rect.Vertices);
outFaces = outFaces.TrimToPolygonXY(rect.Vertices); //Test duplicate edges
VertexGeometryCollection geometry = new VertexGeometryCollection(outFaces.ExtractFaceBoundaries());
//ShapeCollection geometry = faces.ExtractFaceBoundaries();
geometry.Add(new Cloud(verts.ExtractPoints()));
VoronoiCanvas.Geometry = geometry;
}
private void DelaunayRefine(int scenario)
{
var sw = new Stopwatch();
sw.Start();
Random rng = new Random();
BoundingBox box = new BoundingBox(0, 10, -10, 0, 0, 0);
int size = 50;
Geometry.Vector[] points;
if (scenario == 1)
{
points = box.RandomPointsInside(rng, size);
}
else if (scenario == 2)
{
points = new Geometry.Vector[]
{
new Geometry.Vector(10, -9.5),
new Geometry.Vector(0, -9.5),
new Geometry.Vector(2, -0.5),
new Geometry.Vector(8, -0.5)
//new Geometry.Vector(4.5,-0.5),
//new Geometry.Vector(5.5,-0.5)
};
}
else
{
points = new Geometry.Vector[]
{
new Geometry.Vector(10, -6),
new Geometry.Vector(10, -2),
new Geometry.Vector(0, -6),
//new Geometry.Vector(0, -6)
};
}
VertexCollection verts = new VertexCollection(points);
MeshFaceCollection faces = Mesh.DelaunayTriangulationXY(verts);
faces.Quadrangulate();
faces = faces.Refine(0.5);
//Dictionary<Vertex, MeshFace> voronoi = Mesh.VoronoiFromDelaunay(verts, faces);
//ShapeCollection geometry = new MeshFaceCollection(voronoi.Values).ExtractFaceBoundaries();
CurveCollection edges = faces.ExtractFaceBoundaries();
VertexGeometryCollection geometry = new VertexGeometryCollection();
foreach (var edge in edges)
{
var region = new PlanarRegion(edge);
geometry.Add(region);
region.Attributes = new GeometryAttributes(new Colour(128, 0, 255, 128));
geometry.Add(edge);
edge.Attributes = new GeometryAttributes(new Colour(64, 0, 0, 0));
}
geometry.Add(new Cloud(verts.ExtractPoints()));
sw.Stop();
MeshingTimeText.Text = "Completed: " + faces.Count + " faces in " + sw.Elapsed;
DelaunayCanvas.Geometry = geometry;
}
private void DelaunayButton_Click(object sender, RoutedEventArgs e)
{
Random rng = new Random();
BoundingBox box = new BoundingBox(0, 10, -10, 0, 0, 0);
int size = 100;
Geometry.Vector[] points = box.RandomPointsInside(rng, size);
VertexCollection verts = new VertexCollection(points);
MeshFaceCollection faces = Mesh.DelaunayTriangulationXY(verts);
faces.Quadrangulate();
//Dictionary<Vertex, MeshFace> voronoi = Mesh.VoronoiFromDelaunay(verts, faces);
//ShapeCollection geometry = new MeshFaceCollection(voronoi.Values).ExtractFaceBoundaries();
CurveCollection edges = faces.ExtractFaceBoundaries();
VertexGeometryCollection geometry = new VertexGeometryCollection();
foreach (var edge in edges)
{
var region = new PlanarRegion(edge);
geometry.Add(region);
region.Attributes = new GeometryAttributes(new Colour(128, 0, 255, 128));
geometry.Add(edge);
edge.Attributes = new GeometryAttributes(new Colour(64, 0, 0, 0));
}
geometry.Add(new Cloud(verts.ExtractPoints()));
DelaunayCanvas.Geometry = geometry;
}
private void AnalysisMeshButton_Click(object sender, RoutedEventArgs e)
{
Random rng = new Random();
BoundingBox box = new BoundingBox(1, 9, -9, -1, 0, 0);
int size = 100;
//Geometry.Vector[] points = box.RandomPointsInside(rng, size);
//VertexCollection verts = new VertexCollection(points);
VertexCollection verts = new VertexCollection();
//verts.Add(new Vertex(1, -1));
int divs = 5;
for (int i = 0; i <= divs; i++)
{
for (int j = 0; j <= divs; j++)
{
Geometry.Vector pt = new Geometry.Vector(box.X.ValueAt(((double)i) / divs), box.Y.ValueAt(((double)j) / divs));
verts.Add(new Vertex(pt));
}
}
MeshFaceCollection faces = Mesh.DelaunayTriangulationXY(verts);
faces.Quadrangulate();
//Dictionary<Vertex, MeshFace> voronoi = Mesh.VoronoiFromDelaunay(verts, faces);
//ShapeCollection geometry = new MeshFaceCollection(voronoi.Values).ExtractFaceBoundaries();
CurveCollection edges = faces.ExtractFaceBoundaries();
VertexGeometryCollection geometry = new VertexGeometryCollection();
foreach (var edge in edges)
{
var region = new PlanarRegion(edge);
geometry.Add(region);
region.Attributes = new GeometryAttributes(new Colour(128, 0, 255, 128));
geometry.Add(edge);
edge.Attributes = new GeometryAttributes(new Colour(64, 0, 0, 0));
}
geometry.Add(new Cloud(verts.ExtractPoints()));
DelaunayCanvas.Geometry = geometry;
}
