protected virtual void InitializeVertexQuadrics()
{
int NT = mesh.MaxTriangleID;
QuadricError[] triQuadrics = new QuadricError[NT];
double[] triAreas = new double[NT];
gParallel.ForEach(mesh.TriangleIndices(), (tid) => {
Vector3d c, n;
mesh.GetTriInfo(tid, out n, out triAreas[tid], out c);
triQuadrics[tid] = new QuadricError(n, c);
});
int NV = mesh.MaxVertexID;
vertQuadrics = new QuadricError[NV];
gParallel.ForEach(mesh.VertexIndices(), (vid) => {
vertQuadrics[vid] = QuadricError.Zero;
foreach (int tid in mesh.VtxTrianglesItr(vid))
{
vertQuadrics[vid].Add(triAreas[tid], ref triQuadrics[tid]);
}
//Util.gDevAssert(MathUtil.EpsilonEqual(0, vertQuadrics[i].Evaluate(mesh.GetVertex(i)), MathUtil.Epsilon * 10));
});
}
public static Vector3d QuickCompute(DMesh3 mesh, int vid, NormalsTypes type = NormalsTypes.Vertex_OneRingFaceAverage_AreaWeighted)
{
Vector3d sum = Vector3d.Zero;
Vector3d n, c; double a;
foreach (int tid in mesh.VtxTrianglesItr(vid))
{
mesh.GetTriInfo(tid, out n, out a, out c);
sum += a * n;
}
return(sum.Normalized);
}
public MeshTriInfoCache(DMesh3 mesh)
{
int NT = mesh.TriangleCount;
Centroids = new DVector <Vector3d>(); Centroids.resize(NT);
Normals = new DVector <Vector3d>(); Normals.resize(NT);
Areas = new DVector <double>(); Areas.resize(NT);
gParallel.ForEach(mesh.TriangleIndices(), (tid) => {
Vector3d c, n; double a;
mesh.GetTriInfo(tid, out n, out a, out c);
Centroids[tid] = c;
Normals[tid] = n;
Areas[tid] = a;
});
}
/// <summary>
/// Count all input mesh face normals
/// </summary>
public void CountFaceNormals(DMesh3 mesh, bool bWeightByArea = true)
{
foreach (int tid in mesh.TriangleIndices())
{
if (bWeightByArea)
{
Vector3d n, c; double area;
mesh.GetTriInfo(tid, out n, out area, out c);
Count(n, area, true);
}
else
{
Count(mesh.GetTriNormal(tid), 1.0, true);
}
}
}
/// <summary>
/// Computes <see cref="BaseFaceCentroids"/> and <see cref="BaseFaceNormals"/>.
/// Allocates other sets.
/// </summary>
void initialize()
{
BaseFaceCentroids = new Vector3d[Target.MaxTriangleID];
BaseFaceNormals = new Vector3d[Target.MaxTriangleID];
foreach (int tid in Target.TriangleIndices())
{
Target.GetTriInfo(tid, out BaseFaceNormals[tid], out _, out BaseFaceCentroids[tid]);
}
// allocate internals
SegVertices = new List <SegmentVtx>();
EdgeVertices = new Dictionary <int, List <SegmentVtx> >();
FaceVertices = new Dictionary <int, List <SegmentVtx> >();
SubFaces = new Dictionary <int, HashSet <int> >();
ParentFaces = new Dictionary <int, int>();
SegmentInsertVertices = new HashSet <int>();
VIDToSegVtxMap = new Dictionary <int, SegmentVtx>();
}
protected virtual void InitializeVertexQuadrics()
{
int NT = mesh.MaxTriangleID;
QuadricError[] triQuadrics = new QuadricError[NT];
double[] triAreas = new double[NT];
gParallel.BlockStartEnd(0, mesh.MaxTriangleID - 1, (start_tid, end_tid) => {
Vector3d c, n;
for (int tid = start_tid; tid <= end_tid; tid++)
{
if (mesh.IsTriangle(tid))
{
mesh.GetTriInfo(tid, out n, out triAreas[tid], out c);
triQuadrics[tid] = new QuadricError(ref n, ref c);
}
}
});
int NV = mesh.MaxVertexID;
vertQuadrics = new QuadricError[NV];
gParallel.BlockStartEnd(0, mesh.MaxVertexID - 1, (start_vid, end_vid) => {
for (int vid = start_vid; vid <= end_vid; vid++)
{
vertQuadrics[vid] = QuadricError.Zero;
if (mesh.IsVertex(vid))
{
foreach (int tid in mesh.VtxTrianglesItr(vid))
{
vertQuadrics[vid].Add(triAreas[tid], ref triQuadrics[tid]);
}
//Util.gDevAssert(MathUtil.EpsilonEqual(0, vertQuadrics[i].Evaluate(mesh.GetVertex(i)), MathUtil.Epsilon * 10));
}
}
});
}
