maspack.geometry

Class Polygon3dFeature

java.lang.Object

maspack.geometry.Polygon3dFeature

public class Polygon3dFeature
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Polygon3dFeature()

Method Summary

Modifier and Type	Method and Description
double	getDistance() Returns the distance to the nearest feature, or -1 if no feature has been determined yet.
Point3d	getNearestPoint(Point3d px) Returns the nearest point on the nearest fearure, or null if no feature has been determined yet.
Point3d	getVertex(int idx) Returns the idx-th polygon vertex associated with this feature.
Vertex3dNode	getVertexNode()
int	isOutside(boolean clockwise)
int	numVertices() Returns the number of polygon vertices associated with this feature: 0: no feature is currently defined 1: feature is a single polygon vertex; no edges have been encountered 2: feature is an edge 3: feature is the vertex indexed by 1, with 0 and 2 indexing the previous and following vertices
void	print(java.lang.String msg) Prints out a description of this feature.
void	setNearestEdge(Point3d pa, Point3d pb, boolean outsideIfClockwise)
void	setNearestVertex(Point3d pa, Point3d pb, Point3d pc, boolean outsideIfClockwise)

Methods inherited from class java.lang.Object

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

Constructor Detail

Polygon3dFeature

public Polygon3dFeature()

Method Detail

numVertices

public int numVertices()

Returns the number of polygon vertices associated with this feature:

0: no feature is currently defined

1: feature is a single polygon vertex; no edges have been encountered

2: feature is an edge

3: feature is the vertex indexed by 1, with 0 and 2 indexing the previous and following vertices

Returns:

number of feature vertices

getVertex

public Point3d getVertex(int idx)

Returns the idx-th polygon vertex associated with this feature.

Parameters:

idx - vertex index. Should be less than the value returned by numVertices().

Returns:

idx-th polygon vertex. Value is a reference and should not be modified.

getVertexNode

public Vertex3dNode getVertexNode()

getDistance

public double getDistance()

Returns the distance to the nearest feature, or -1 if no feature has been determined yet.

Returns:

distance to the nearest feature.

getNearestPoint

public Point3d getNearestPoint(Point3d px)

Returns the nearest point on the nearest fearure, or null if no feature has been determined yet.

Returns:

nearest point on the nearest feature

print

public void print(java.lang.String msg)

Prints out a description of this feature.

Parameters:

msg - optional message line

setNearestVertex

public void setNearestVertex(Point3d pa,
                             Point3d pb,
                             Point3d pc,
                             boolean outsideIfClockwise)

setNearestEdge

public void setNearestEdge(Point3d pa,
                           Point3d pb,
                           boolean outsideIfClockwise)

isOutside

public int isOutside(boolean clockwise)