public static void Split(MeshGeometry3D mesh, Plane3D plane, out MeshGeometry3D above, out MeshGeometry3D below)
{
throw new NotImplementedException();
}
public static void Split(MeshGeometry3D mesh, Plane3D plane, out MeshGeometry3D above, out MeshGeometry3D below)
{
throw new NotImplementedException();
}
/// <summary>
/// Chamfers the specified corner (experimental code).
/// </summary>
/// <param name="p">The corner point.</param>
/// <param name="d">The chamfer distance.</param>
/// <param name="eps">The corner search limit distance.</param>
/// <param name="chamferPoints">If this parameter is provided, the collection will be filled with the generated chamfer points.</param>
public void ChamferCorner(Point3D p, double d, double eps = 1e-6, ICollection<Point3D> chamferPoints = null)
{
NoSharedVertices();
normals = null;
textureCoordinates = null;
var cornerNormal = FindCornerNormal(p, eps);
var newCornerPoint = p - cornerNormal * d;
int index0 = positions.Count;
positions.Add(newCornerPoint);
var plane = new Plane3D(newCornerPoint, cornerNormal);
int ntri = triangleIndices.Count;
for (int i = 0; i < ntri; i += 3)
{
int i0 = i;
int i1 = i + 1;
int i2 = i + 2;
var p0 = positions[triangleIndices[i0]];
var p1 = positions[triangleIndices[i1]];
var p2 = positions[triangleIndices[i2]];
double d0 = (p - p0).LengthSquared;
double d1 = (p - p1).LengthSquared;
double d2 = (p - p2).LengthSquared;
double mind = Math.Min(d0, Math.Min(d1, d2));
if (mind > eps)
continue;
if (d1 < eps)
{
i0 = i + 1;
i1 = i + 2;
i2 = i;
}
if (d2 < eps)
{
i0 = i + 2;
i1 = i;
i2 = i + 1;
}
p0 = positions[triangleIndices[i0]];
p1 = positions[triangleIndices[i1]];
p2 = positions[triangleIndices[i2]];
// p0 is the corner vertex (at index i0)
// find the intersections between the chamfer plane and the two edges connected to the corner
var p01 = plane.LineIntersection(p0, p1);
var p02 = plane.LineIntersection(p0, p2);
if (p01 == Plane3D.InPlane || p01 == Plane3D.NoIntersection)
continue;
if (p02 == Plane3D.InPlane || p02 == Plane3D.NoIntersection)
continue;
if (chamferPoints != null)
{
// add the chamfered points
if (!chamferPoints.Contains(p01))
chamferPoints.Add(p01);
if (!chamferPoints.Contains(p02))
chamferPoints.Add(p02);
}
int i01 = i0;
// change the original triangle to use the first chamfer point
positions[triangleIndices[i01]] = p01;
int i02 = positions.Count;
positions.Add(p02);
// add a new triangle for the other chamfer point
triangleIndices.Add(i01);
triangleIndices.Add(i2);
triangleIndices.Add(i02);
// add a triangle connecting the chamfer points and the new corner point
triangleIndices.Add(index0);
triangleIndices.Add(i01);
triangleIndices.Add(i02);
}
NoSharedVertices();
}