maspack.geometry

Class TriTriIntersection

java.lang.Object

maspack.geometry.TriTriIntersection

public class TriTriIntersection
extends java.lang.Object

A generic representation of an intersection between two triangles.

Author:

elliote, antonio

Field Summary

Fields

Modifier and Type	Field and Description
Face	face0
Face	face1
Point3d[]	points

Constructor Summary

Constructors

Constructor and Description
TriTriIntersection(Face f0, Face f1, Point3d[] _points) Initialize with faces and intersection points.
TriTriIntersection(Face f0, Face f1, Point3d[] _points, double[] coords) Initialize with faces, intersection points, and point coordinates.

Method Summary

Modifier and Type	Method and Description
boolean	equals(TriTriIntersection isect, java.lang.StringBuilder msg)
Point3d	getCurrentPosition(int idx) Computes the current position of the idx-th point, in world coordinates, using its barycentric coordinates with respect to face0.
Vector2d[]	getFace0Coords()
Vector2d[]	getFace1Coords()
Vector2d	getPointCoords(int idx) Returns the stored barycentric coordinates of the idx-th point.
static void	getState(DataBuffer data, java.util.ArrayList<TriTriIntersection> isects)
int	numPoints()
static java.util.ArrayList<TriTriIntersection>	setStateArray(DataBuffer data, PolygonalMesh mesh0, PolygonalMesh mesh1)

Methods inherited from class java.lang.Object

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

Field Detail

face0

public Face face0

face1

public Face face1

points

public Point3d[] points

Constructor Detail

TriTriIntersection

public TriTriIntersection(Face f0,
                          Face f1,
                          Point3d[] _points)

Initialize with faces and intersection points.

TriTriIntersection

public TriTriIntersection(Face f0,
                          Face f1,
                          Point3d[] _points,
                          double[] coords)

Initialize with faces, intersection points, and point coordinates.

Method Detail

getPointCoords

public Vector2d getPointCoords(int idx)

Returns the stored barycentric coordinates of the idx-th point. It is assumed that points has been initialized; otherwise, null is returned.

Returns:

barcentric coordinates of point idx

getFace0Coords

public Vector2d[] getFace0Coords()

getFace1Coords

public Vector2d[] getFace1Coords()

getCurrentPosition

public Point3d getCurrentPosition(int idx)

Computes the current position of the idx-th point, in world coordinates, using its barycentric coordinates with respect to face0. This accounts for any possible displacement of the mesh vertices since the intersection point was first computed. It is assumed that points has been initialized; otherwise, null is returned.

Returns:

current position of point idx

numPoints

public int numPoints()

equals

public boolean equals(TriTriIntersection isect,
                      java.lang.StringBuilder msg)

getState

public static void getState(DataBuffer data,
                            java.util.ArrayList<TriTriIntersection> isects)

setStateArray

public static java.util.ArrayList<TriTriIntersection> setStateArray(DataBuffer data,
                                                                    PolygonalMesh mesh0,
                                                                    PolygonalMesh mesh1)