Class MeshUtil

Inheritance
Object
MeshUtil
Inherited Members
Namespace: g3
Assembly: cs.temp.dll.dll
Syntax
public static class MeshUtil

Methods

CheckIfCollapseCreatesFlip(DMesh3, Int32, Vector3d)

Check if collapsing edge edgeID to point newv will flip normal of any attached face

Declaration
public static bool CheckIfCollapseCreatesFlip(DMesh3 mesh, int edgeID, Vector3d newv)
Parameters
Type Name Description
DMesh3 mesh
Int32 edgeID
Vector3d newv
Returns
Type Description
Boolean

CheckIfEdgeFlipCreatesFlip(DMesh3, Int32, Double)

if before a flip we have normals (n1,n2) and after we have (m1,m2), check if the dot between any of the 4 pairs changes sign after the flip, or is less than the dot-product tolerance (ie angle tolerance)

Declaration
public static bool CheckIfEdgeFlipCreatesFlip(DMesh3 mesh, int eID, double flip_dot_tol = 0)
Parameters
Type Name Description
DMesh3 mesh
Int32 eID
Double flip_dot_tol
Returns
Type Description
Boolean

CotanSmooth(DMesh3, Int32, Double)

Declaration
public static Vector3d CotanSmooth(DMesh3 mesh, int vID, double t)
Parameters
Type Name Description
DMesh3 mesh
Int32 vID
Double t
Returns
Type Description
Vector3d

DiscreteGaussCurvature(DMesh3, Int32)

computes sum of opening-angles in triangles around vid, minus 2pi. This is zero on flat areas.

Declaration
public static double DiscreteGaussCurvature(DMesh3 mesh, int vid)
Parameters
Type Name Description
DMesh3 mesh
Int32 vid
Returns
Type Description
Double

ExtractLoopV(IMesh, IEnumerable<Int32>)

Declaration
public static DCurve3 ExtractLoopV(IMesh mesh, IEnumerable<int> vertices)
Parameters
Type Name Description
IMesh mesh
IEnumerable<Int32> vertices
Returns
Type Description
DCurve3

ExtractLoopV(IMesh, Int32[])

Declaration
public static DCurve3 ExtractLoopV(IMesh mesh, int[] vertices)
Parameters
Type Name Description
IMesh mesh
Int32[] vertices
Returns
Type Description
DCurve3

GetEdgeFlipNormals(DMesh3, Int32, out Vector3d, out Vector3d, out Vector3d, out Vector3d)

For given edge, return normals of it's two triangles, and normals of the triangles created if edge is flipped (used in edge-flip optimizers)

Declaration
public static void GetEdgeFlipNormals(DMesh3 mesh, int eID, out Vector3d n1, out Vector3d n2, out Vector3d on1, out Vector3d on2)
Parameters
Type Name Description
DMesh3 mesh
Int32 eID
Vector3d n1
Vector3d n2
Vector3d on1
Vector3d on2

GetEdgeFlipTris(DMesh3, Int32, out Index3i, out Index3i, out Index3i, out Index3i)

For given edge, return it's triangles and the triangles that would be created if it was flipped (used in edge-flip optimizers)

Declaration
public static void GetEdgeFlipTris(DMesh3 mesh, int eID, out Index3i orig_t0, out Index3i orig_t1, out Index3i flip_t0, out Index3i flip_t1)
Parameters
Type Name Description
DMesh3 mesh
Int32 eID
Index3i orig_t0
Index3i orig_t1
Index3i flip_t0
Index3i flip_t1

MeanValueSmooth(DMesh3, Int32, Double)

Declaration
public static Vector3d MeanValueSmooth(DMesh3 mesh, int vID, double t)
Parameters
Type Name Description
DMesh3 mesh
Int32 vID
Double t
Returns
Type Description
Vector3d

OpeningAngleD(DMesh3, Int32)

computes opening angle between the two triangles connected to edge

Declaration
public static double OpeningAngleD(DMesh3 mesh, int eid)
Parameters
Type Name Description
DMesh3 mesh
Int32 eid
Returns
Type Description
Double

ScaleMesh(DMesh3, Frame3f, Vector3f)

Declaration
public static void ScaleMesh(DMesh3 mesh, Frame3f f, Vector3f vScale)
Parameters
Type Name Description
DMesh3 mesh
Frame3f f
Vector3f vScale

UniformSmooth(DMesh3, Int32, Double)

Declaration
public static Vector3d UniformSmooth(DMesh3 mesh, int vID, double t)
Parameters
Type Name Description
DMesh3 mesh
Int32 vID
Double t
Returns
Type Description
Vector3d