public void RefineTriangles()
{
var mesh = new MeshData();
mesh.Vertices.AddRange(Fixtures.TwitterBirdVertices);
mesh.Edges.AddRange(Fixtures.TwitterBirdEdges);
mesh.Triangles.AddRange(Fixtures.TwitterBirdMonotoneTriangles);
var triangles = new Triangles(mesh);
DelaunayRefine.RefineTriangles(triangles);
triangles.Fill(mesh.Triangles);
Assert.AreEqual(Fixtures.TwitterBirdDelaunayRefinedTriangles, mesh.Triangles);
}
private FaceIndex IndexCells(Triangles triangles)
{
var zero = 0;
var fals = false;
var index = new FaceIndex(WorkBufferPool);
triangles.Fill(index.Cells);
//First get cells and canonicalize
var cells = index.Cells;
var nc = cells.UsedSize;
var cellsData = cells.Data;
for (var i = 0; i < nc; ++i)
{
var c = cellsData[i];
var x = c.x;
var y = c.y;
var z = c.z;
if (y < z)
{
if (y < x)
{
c.x = y;
c.y = z;
c.z = x;
cellsData[i] = c;
}
}
else if (z < x)
{
c.x = z;
c.y = x;
c.z = y;
cellsData[i] = c;
}
}
WorkBuffer <Int3> .Sort(cells);
//Initialize flag array
var flags = index.Flags;
flags.Fill(ref zero, nc);
//Build neighbor index, initialize queues
var active = index.Active;
var next = index.Next;
var neighbor = index.Neighbor;
var constraint = index.Constraint;
var boundary = index.Boundary;
neighbor.Fill(ref zero, nc * 3);
constraint.Fill(ref fals, nc * 3);
var flagsData = flags.Data;
var neighborData = neighbor.Data;
var constraintData = constraint.Data;
for (var i = 0; i < nc; ++i)
{
var c = cellsData[i];
for (var j = 0; j < 3; ++j)
{
var x = 0;
var y = 0;
switch (j)
{
case 0:
x = c.x;
y = c.y;
break;
case 1:
x = c.y;
y = c.z;
break;
case 2:
x = c.z;
y = c.x;
break;
}
var a = neighborData[3 * i + j] = Locate(cells, y, x, triangles.Opposite(y, x));
var b = constraintData[3 * i + j] = triangles.IsConstraint(x, y);
if (a < 0)
{
if (b)
{
next.Push(ref i);
}
else
{
active.Push(ref i);
flagsData[i] = 1;
}
if (Infinity)
{
var v = new Int3(y, x, -1);
boundary.Push(ref v);
}
}
}
}
return(index);
}