maspack.geometry

Class MarchingTetrahedra

java.lang.Object

maspack.geometry.MarchingTetrahedra

public class MarchingTetrahedra
extends java.lang.Object

Implements MarchingTetrahedra to generate a mesh from a scalar field defined on a grid. Code provided by http://paulbourke.net/geometry/polygonise.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	MarchingTetrahedra.GridPointData
class	MarchingTetrahedra.GridPointGenerator

Constructor Summary

Constructors

Constructor and Description
MarchingTetrahedra()

Method Summary

Modifier and Type	Method and Description
PolygonalMesh	createMesh(double[] vals, Vector3d minCoord, Vector3d cellWidths, Vector3i res, double iso) Creates an isosurface mesh from a 3D grid of values.

Methods inherited from class java.lang.Object

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

Constructor Detail

MarchingTetrahedra

public MarchingTetrahedra()

Method Detail

createMesh

public PolygonalMesh createMesh(double[] vals,
                                Vector3d minCoord,
                                Vector3d cellWidths,
                                Vector3i res,
                                double iso)

Creates an isosurface mesh from a 3D grid of values. The grid has a resolution of res.x X res.y X res.z cells, with the x, y, and z widths of each cell given by cellWidths, and a minimum vertex located at minCoord. The number of vertices along the x, y, and z axes is hence numVX = res.x+1, numVY = res.y+1, and numVZ = res.z+1. The values at each vertex are stored in the array vals, and arranged, for the vertex at (i, j, k) by

   val[vertex(i,j,k)] = [i + j*numVX + k*numVX*numVY];
 

Parameters:

vals - contains grid values at each vertex

minCoord - value of minimum vertex at (0, 0, 0)

cellWidths - widths of each grid cell along the x, y, and z axes

res - number of cells along each of the x, y, and z axes

iso - value to be used to create the isosurface

Returns:

mesh corresponding to the iso surface