Class PlanarHoleFiller

Try to fill planar holes in a mesh. The fill is computed by mapping the hole boundary into 2D, filling using 2D algorithms, and then mapping back to 3D. This allows us to properly handle cases like nested holes (eg from slicing a torus in half).

PlanarComplex is used to sort the input 2D polyons.

MeshInsertUVPolyCurve is used to insert each 2D polygon into a generated planar mesh. The resolution of the generated mesh is controlled by .FillTargetEdgeLen

In theory this approach can handle more geometric degeneracies than Delaunay triangluation. However, the current code requires that MeshInsertUVPolyCurve produce output boundary loops that have a 1-1 correspondence with the input polygons. This is not always possible.

Currently these failure cases are not handled properly. In that case the loops will not be stitched.

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

Constructors

PlanarHoleFiller(DMesh3)

Declaration
public PlanarHoleFiller(DMesh3 mesh)
Parameters
Type Name Description
DMesh3 mesh

PlanarHoleFiller(MeshPlaneCut)

Declaration
public PlanarHoleFiller(MeshPlaneCut cut)
Parameters
Type Name Description
MeshPlaneCut cut

Fields

FailedInsertions

Declaration
public int FailedInsertions
Field Value
Type Description
Int32

FailedMerges

Declaration
public int FailedMerges
Field Value
Type Description
Int32

FillTargetEdgeLen

fill mesh will be tessellated to this length, set to double.MaxValue to use zero-length tessellation

Declaration
public double FillTargetEdgeLen
Field Value
Type Description
Double

MergeFillBoundary

in some cases fill can succeed but we can't merge w/o creating holes. In such cases it might be better to not merge at all...

Declaration
public bool MergeFillBoundary
Field Value
Type Description
Boolean

Mesh

Declaration
public DMesh3 Mesh
Field Value
Type Description
DMesh3

OutputHasCracks

Declaration
public bool OutputHasCracks
Field Value
Type Description
Boolean

PlaneNormal

Declaration
public Vector3d PlaneNormal
Field Value
Type Description
Vector3d

PlaneOrigin

Declaration
public Vector3d PlaneOrigin
Field Value
Type Description
Vector3d

Methods

AddFillLoop(EdgeLoop)

Declaration
public void AddFillLoop(EdgeLoop loop)
Parameters
Type Name Description
EdgeLoop loop

AddFillLoops(IEnumerable<EdgeLoop>)

Declaration
public void AddFillLoops(IEnumerable<EdgeLoop> loops)
Parameters
Type Name Description
IEnumerable<EdgeLoop> loops

Fill()

Compute the fill mesh and append it. This returns false if anything went wrong. The Error Feedback properties (.OutputHasCracks, etc) will provide more info.

Declaration
public bool Fill()
Returns
Type Description
Boolean

SetPlane(Vector3d, Vector3d)

Declaration
public void SetPlane(Vector3d origin, Vector3d normal)
Parameters
Type Name Description
Vector3d origin
Vector3d normal

SetPlane(Vector3d, Vector3d, Vector3d, Vector3d)

Declaration
public void SetPlane(Vector3d origin, Vector3d normal, Vector3d planeX, Vector3d planeY)
Parameters
Type Name Description
Vector3d origin
Vector3d normal
Vector3d planeX
Vector3d planeY