maspack.geometry

Class MeshUtilities

java.lang.Object

maspack.geometry.MeshUtilities

public class MeshUtilities
extends java.lang.Object

Methods that modify a mesh, XXX many of these methods are broken

Constructor Summary

Constructors

Constructor and Description
MeshUtilities()

Method Summary

Modifier and Type	Method and Description
static void	closeHoles(PolygonalMesh mesh, int size) Attempts to close holes smaller or equal to the given size
static void	laplacianSmooth(PolygonalMesh mesh, double lambda, int iters) Applies the Laplacian smoothing operating to the mesh, with cotangent weights
static void	quadricEdgeCollapse(PolygonalMesh mesh, int n) Quadric edge-collapse decimation, removing vertices through edge-collapse based on least quadric plane error
static void	sqrt3Subdivide(PolygonalMesh mesh, boolean even, int niters) Sqrt-3 subdivision
static void	sqrt3Subdivide(PolygonalMesh mesh, int niters) Sqrt-3 subdivision
static void	taubinSmooth(PolygonalMesh mesh, double lambda, double mu, int iters) Applies the Taubin smoothing operating to the mesh, with cotangent weights, suggested factors 0 < lambda < -mu <= 1.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MeshUtilities

public MeshUtilities()

Method Detail

laplacianSmooth

public static void laplacianSmooth(PolygonalMesh mesh,
                                   double lambda,
                                   int iters)

Applies the Laplacian smoothing operating to the mesh, with cotangent weights

Parameters:

mesh - polygonal mesh to smooth

lambda - scale factor for gradient addition

iters - number of iterations

taubinSmooth

public static void taubinSmooth(PolygonalMesh mesh,
                                double lambda,
                                double mu,
                                int iters)

Applies the Taubin smoothing operating to the mesh, with cotangent weights, suggested factors 0 < lambda < -mu <= 1. Meshlab uses lambda=0.5, mu=-0.53 by default.

Parameters:

mesh - polygonal mesh to smooth

lambda - scale factor for gradient addition (smoothing)

mu - scale factor for gradient addition

iters - number of iterations

quadricEdgeCollapse

public static void quadricEdgeCollapse(PolygonalMesh mesh,
                                       int n)

Quadric edge-collapse decimation, removing vertices through edge-collapse based on least quadric plane error

Parameters:

mesh - mesh to update

n - number of edges to collapse

sqrt3Subdivide

public static void sqrt3Subdivide(PolygonalMesh mesh,
                                  int niters)

Sqrt-3 subdivision

Parameters:

mesh - mesh to subdivide

niters - number of iterations

sqrt3Subdivide

public static void sqrt3Subdivide(PolygonalMesh mesh,
                                  boolean even,
                                  int niters)

Sqrt-3 subdivision

Parameters:

mesh - mesh to subdivide

even - set first iteration to an "even" split, where borders are not divided

niters - number of iterations

closeHoles

public static void closeHoles(PolygonalMesh mesh,
                              int size)

Attempts to close holes smaller or equal to the given size

Parameters:

mesh - mesh to close

size - max number of edges in hole (if <= 0, closes holes of any size)