Package mgui.geometry

Class Triangle3D

java.lang.Object

mgui.geometry.Shape3D

mgui.geometry.Triangle3D

All Implemented Interfaces:

java.lang.Cloneable, Shape, XMLObject

public class Triangle3D
extends Shape3D

Represents a 3D triangle.

Since:

1.0

Version:

1.0

Author:

Andrew Reid

Nested Class Summary

Nested classes/interfaces inherited from interface mgui.interfaces.xml.XMLObject

XMLObject.XMLEncoding, XMLObject.XMLType

Field Summary

Fields

Modifier and Type	Field	Description
org.jogamp.vecmath.Point3f	A
org.jogamp.vecmath.Point3f	B
org.jogamp.vecmath.Point3f	C

Fields inherited from class mgui.geometry.Shape3D

xml_count, xml_current_block, xml_encoding, xml_itr, xml_vertices

Constructor Summary

Constructors

Constructor	Description
Triangle3D()
Triangle3D(org.jogamp.vecmath.Point3f p1, org.jogamp.vecmath.Point3f p2, org.jogamp.vecmath.Point3f p3)

Method Summary

Modifier and Type	Method	Description
boolean	contains(org.jogamp.vecmath.Point3f p)	Determines whether p is contained by this triangle.
float[]	getAngles()	Returns face angles as an array ordered by: ∠A, ∠B, ∠C
float[]	getCoords()
float[]	getEdgeLengths()	Returns edge lengths as an array ordered by: |AB|,|BC|,|AC|.
org.jogamp.vecmath.Vector3f[]	getEdges()	Returns edges as an array of vectors ordered by: AB,BC,CA.
Plane3D	getPlane()
org.jogamp.vecmath.Point3f	getVertex(int i)	Returns the vertex at the specified index as a Point3f.
java.util.ArrayList<org.jogamp.vecmath.Point3f>	getVertices()	Returns a list of this shape's nodes as Point3f's.
void	setCoords(float[] coords)
void	setVertices(java.util.ArrayList<org.jogamp.vecmath.Point3f> nodes)
java.lang.String	toString()

Methods inherited from class mgui.geometry.Shape3D

clone, getBoundBox, getCenter, getDTD, getLocalName, getProximity, getProximityPoint, getShortXML, getSize, getXML, getXML, getXMLSchema, handleXMLElementEnd, handleXMLElementStart, handleXMLString, loadAsciiCoords, loadBinaryCoords, loadCoords, loadXMLCoord, setVertices, transform, transform, writeAsciiCoords, writeBinaryCoords, writeCoords, writeXML, writeXML, writeXML

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

A

public org.jogamp.vecmath.Point3f A

B

public org.jogamp.vecmath.Point3f B

C

public org.jogamp.vecmath.Point3f C

Constructor Details

Triangle3D

public Triangle3D()

Triangle3D

public Triangle3D(org.jogamp.vecmath.Point3f p1,
org.jogamp.vecmath.Point3f p2,
org.jogamp.vecmath.Point3f p3)

Method Details

getPlane

public Plane3D getPlane()

getVertices

public java.util.ArrayList<org.jogamp.vecmath.Point3f> getVertices()

Description copied from class: Shape3D

Returns a list of this shape's nodes as Point3f's. This list is a copy, so operations performed on these nodes will not affect this shape.

Specified by:

getVertices in class Shape3D

Returns:

getEdgeLengths

public float[] getEdgeLengths()

Returns edge lengths as an array ordered by: |AB|,|BC|,|AC|.

Returns:

getAngles

public float[] getAngles()

Returns face angles as an array ordered by: ∠A, ∠B, ∠C

Returns:

getEdges

public org.jogamp.vecmath.Vector3f[] getEdges()

Returns edges as an array of vectors ordered by: AB,BC,CA.

Returns:

getVertex

public org.jogamp.vecmath.Point3f getVertex(int i)

Description copied from class: Shape3D

Returns the vertex at the specified index as a Point3f. This vertex is a copy, so operations performed on it will not affect this shape.

Note: subclasses may want to provide a more efficient implementation of this method.

Specified by:

getVertex in class Shape3D

Returns:

contains

public boolean contains(org.jogamp.vecmath.Point3f p)

Determines whether p is contained by this triangle. Assumes that p is conplanar with this triangle. From http://www.blackpawn.com/texts/pointinpoly/default.html: function SameSide(p1,p2, a,b) cp1 = CrossProduct(b-a, p1-a) cp2 = CrossProduct(b-a, p2-a) if DotProduct(cp1, cp2) >= 0 then return true else return false function PointInTriangle(p, a,b,c) if SameSide(p,a, b,c) and SameSide(p,b, a,c) and SameSide(p,c, a,b) then return true else return false

Overrides:

contains in class Shape3D

Returns:

true if this shape contains point; false otherwise.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getCoords

public float[] getCoords()

Specified by:

getCoords in interface Shape

Specified by:

getCoords in class Shape3D

setCoords

public void setCoords(float[] coords)

Specified by:

setCoords in interface Shape

Specified by:

setCoords in class Shape3D

setVertices

public void setVertices(java.util.ArrayList<org.jogamp.vecmath.Point3f> nodes)

Specified by:

setVertices in class Shape3D