/// <summary>
/// Find distance from point to mesh
/// Returns interpolated vertex-normal frame if available, otherwise tri-normal frame.
/// </summary>
public static double NearestPointDistance(DMesh3 mesh, ISpatial spatial, Vector3d queryPoint, double maxDist = double.MaxValue)
{
int tid = spatial.FindNearestTriangle(queryPoint, maxDist);
if (tid == DMesh3.InvalidID)
{
return(double.MaxValue);
}
return(Math.Sqrt(TriangleDistance(mesh, tid, queryPoint).DistanceSquared));
}
public Vector3d FindNearestAndOffset(Vector3d pos)
{
int tNearestID = Spatial.FindNearestTriangle(pos);
DistPoint3Triangle3 q = MeshQueries.TriangleDistance(Mesh, tNearestID, pos);
Vector3d vHitNormal =
(UseFaceNormal == false && Mesh.HasVertexNormals) ?
Mesh.GetTriBaryNormal(tNearestID, q.TriangleBaryCoords.x, q.TriangleBaryCoords.y, q.TriangleBaryCoords.z)
: Mesh.GetTriNormal(tNearestID);
return(q.TriangleClosest + Distance * vHitNormal);
}
/// <summary>
/// Find point-normal(Z) frame at closest point to queryPoint on mesh.
/// Returns interpolated vertex-normal frame if available, otherwise tri-normal frame.
/// </summary>
public static Frame3f NearestPointFrame(DMesh3 mesh, ISpatial spatial, Vector3d queryPoint, bool bForceFaceNormal = false)
{
int tid = spatial.FindNearestTriangle(queryPoint);
Vector3d surfPt = TriangleDistance(mesh, tid, queryPoint).TriangleClosest;
if (mesh.HasVertexNormals && bForceFaceNormal == false)
{
return(SurfaceFrame(mesh, tid, surfPt));
}
else
{
return(new Frame3f(surfPt, mesh.GetTriNormal(tid)));
}
}
public MeshFacesFromLoop(DMesh3 Mesh, DCurve3 SpaceCurve, ISpatial Spatial, int tSeed)
{
this.Mesh = Mesh;
int N = SpaceCurve.VertexCount;
InitialLoopT = new int[N];
for (int i = 0; i < N; ++i)
{
InitialLoopT[i] = Spatial.FindNearestTriangle(SpaceCurve[i]);
}
find_path();
find_interior_from_seed(tSeed);
}
public MeshFacesFromLoop(NGonsCore.geometry3Sharp.mesh.DMesh3 Mesh, DCurve3 SpaceCurve, ISpatial Spatial)
{
this.Mesh = Mesh;
int N = SpaceCurve.VertexCount;
InitialLoopT = new int[N];
for (int i = 0; i < N; ++i)
{
InitialLoopT[i] = Spatial.FindNearestTriangle(SpaceCurve[i]);
}
find_path();
find_interior_from_tris();
}
public void Precompute_NearestTriangleNormals()
{
int N = DisplaceMesh.MaxTriangleID;
TriVtxNormalDisplacements = new TriVtxNormalsDisplace[N];
update_vertex_frames();
//foreach ( int vid in DisplaceMesh.VertexIndices() ) {
gParallel.ForEach <int>(DisplaceMesh.VertexIndices(), (vid) => {
Vector3f pos = (Vector3f)DisplaceMesh.GetVertex(vid);
int tid = BaseSpatial.FindNearestTriangle(pos);
Index3i tri = BaseMesh.GetTriangle(tid);
Vector3f dv0 = VtxFrames[tri.a].ToFrameP(pos);
Vector3f dv1 = VtxFrames[tri.b].ToFrameP(pos);
Vector3f dv2 = VtxFrames[tri.c].ToFrameP(pos);
TriVtxNormalDisplacements[vid] = new TriVtxNormalsDisplace()
{
tID = tid, dv0 = dv0, dv1 = dv1, dv2 = dv2
};
});
}
/// <summary>
/// Find distance from point to mesh
/// Returns interpolated vertex-normal frame if available, otherwise tri-normal frame.
/// </summary>
public static double NearestPointDistance(DMesh3 mesh, ISpatial spatial, Vector3d queryPoint, double maxDist = double.MaxValue)
{
int tid = spatial.FindNearestTriangle(queryPoint, maxDist);
if (tid == DMesh3.InvalidID)
{
return(double.MaxValue);
}
Triangle3d tri = new Triangle3d();
mesh.GetTriVertices(tid, ref tri.V0, ref tri.V1, ref tri.V2);
Vector3d closest, bary;
double dist_sqr = DistPoint3Triangle3.DistanceSqr(ref queryPoint, ref tri, out closest, out bary);
return(Math.Sqrt(dist_sqr));
}
