maspack.geometry

Class DistanceGridSurfCalc

java.lang.Object

maspack.geometry.DistanceGridSurfCalc

public class DistanceGridSurfCalc
extends java.lang.Object

Worker class that performs computations specifically related to the intersection of a plane and the surface of a quadratically interpolated distance grid.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DistanceGridSurfCalc.PlaneType
static class	DistanceGridSurfCalc.TangentProblem Used to write out a surface tangent problem for debugging purposes.
static class	DistanceGridSurfCalc.TanSearchInfo
static class	DistanceGridSurfCalc.TetEdge
static class	DistanceGridSurfCalc.TetFeature
static class	DistanceGridSurfCalc.TetNode
static class	DistanceGridSurfCalc.TetPlaneIntersection

Constructor Summary

Constructors

Constructor and Description
DistanceGridSurfCalc(DistanceGrid grid)

Method Summary

Modifier and Type	Method and Description
DistanceGridSurfCalc.PlaneType	computeBCoefs(double[] b, Vector3d r, double[] c, Plane planeCell)
boolean	doIntersectTetAndPlane(DistanceGridSurfCalc.TetPlaneIntersection isect, DistanceGrid.TetDesc tdesc, Point3d[] vpnts, double[] dist, Plane plane)
boolean	findQuadSurfaceIntersection(Point3d pi, Point3d p0, Point3d pa, Vector3d nrm)
DistanceGrid.TetDesc	findQuadSurfaceIntersectionLoc(Point3d ps, Point3d p0, Vector3d dir) Find the nearest quad surface intersection to p0, in the direction dir, and return the result in ps.
boolean	findQuadSurfaceTangent(Point3d pt, Point3d p0, Point3d pa, Vector3d nrm)
int	getDebug()
static java.util.ArrayList<DistanceGrid.TetDesc[]>	getNodeTets()
void	getVertexCoords(Point3d[] v, DistanceGrid.TetDesc tdesc) Compute the locations (in local coordinates) of the nodes of the indicated tet.
boolean	intersectTetAndPlane(DistanceGridSurfCalc.TetPlaneIntersection isect, DistanceGrid.TetDesc tdesc, Point3d[] vpnts, Plane plane)
static void	main(java.lang.String[] args)
void	setDebug(int level)
void	transformFromQuadCell(Point3d pl, double x, double y, double z, DistanceGrid.TetDesc tdesc)
void	transformFromQuadCell(Point3d pl, Point3d pc, DistanceGrid.TetDesc tdesc)
void	transformToQuadCell(Plane pc, Plane pl, DistanceGrid.TetDesc tdesc)
void	transformToQuadCell(Point3d pc, Point3d pl, DistanceGrid.TetDesc tdesc)
void	transformToQuadCell(Vector3d vc, Vector3d v1, DistanceGrid.TetDesc tdesc)

Methods inherited from class java.lang.Object

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

Constructor Detail

DistanceGridSurfCalc

public DistanceGridSurfCalc(DistanceGrid grid)

Method Detail

getNodeTets

public static java.util.ArrayList<DistanceGrid.TetDesc[]> getNodeTets()

intersectTetAndPlane

public boolean intersectTetAndPlane(DistanceGridSurfCalc.TetPlaneIntersection isect,
                                    DistanceGrid.TetDesc tdesc,
                                    Point3d[] vpnts,
                                    Plane plane)

doIntersectTetAndPlane

public boolean doIntersectTetAndPlane(DistanceGridSurfCalc.TetPlaneIntersection isect,
                                      DistanceGrid.TetDesc tdesc,
                                      Point3d[] vpnts,
                                      double[] dist,
                                      Plane plane)

computeBCoefs

public DistanceGridSurfCalc.PlaneType computeBCoefs(double[] b,
                                                    Vector3d r,
                                                    double[] c,
                                                    Plane planeCell)

findQuadSurfaceTangent

public boolean findQuadSurfaceTangent(Point3d pt,
                                      Point3d p0,
                                      Point3d pa,
                                      Vector3d nrm)

findQuadSurfaceIntersectionLoc

public DistanceGrid.TetDesc findQuadSurfaceIntersectionLoc(Point3d ps,
                                                           Point3d p0,
                                                           Vector3d dir)

Find the nearest quad surface intersection to p0, in the direction dir, and return the result in ps. It is assumed that dir lies in the plane. Input and output parameters are all given in grid local coordinates. The method returns a descriptor of the tet/plane intersection for the tet containing ps, unless ps is not found, in which case null is returned.

findQuadSurfaceIntersection

public boolean findQuadSurfaceIntersection(Point3d pi,
                                           Point3d p0,
                                           Point3d pa,
                                           Vector3d nrm)

transformToQuadCell

public void transformToQuadCell(Point3d pc,
                                Point3d pl,
                                DistanceGrid.TetDesc tdesc)

transformToQuadCell

public void transformToQuadCell(Vector3d vc,
                                Vector3d v1,
                                DistanceGrid.TetDesc tdesc)

transformFromQuadCell

public void transformFromQuadCell(Point3d pl,
                                  double x,
                                  double y,
                                  double z,
                                  DistanceGrid.TetDesc tdesc)

transformFromQuadCell

public void transformFromQuadCell(Point3d pl,
                                  Point3d pc,
                                  DistanceGrid.TetDesc tdesc)

transformToQuadCell

public void transformToQuadCell(Plane pc,
                                Plane pl,
                                DistanceGrid.TetDesc tdesc)

getVertexCoords

public void getVertexCoords(Point3d[] v,
                            DistanceGrid.TetDesc tdesc)

Compute the locations (in local coordinates) of the nodes of the indicated tet.

main

public static void main(java.lang.String[] args)

getDebug

public int getDebug()

setDebug

public void setDebug(int level)