Package mgui.geometry

Class Triangle2D

java.lang.Object

mgui.geometry.Shape2D

mgui.geometry.Triangle2D

All Implemented Interfaces:

java.lang.Cloneable, Shape, XMLObject

public class Triangle2D
extends Shape2D

Represents a 2D 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

Constructor Summary

Constructors

Constructor	Description
Triangle2D()
Triangle2D(java.util.ArrayList<org.jogamp.vecmath.Point2f> nodes)
Triangle2D(org.jogamp.vecmath.Point2f p1, org.jogamp.vecmath.Point2f p2, org.jogamp.vecmath.Point2f p3)

Method Summary

Modifier and Type	Method	Description
boolean	contains(org.jogamp.vecmath.Point2f p)	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
org.jogamp.vecmath.Point2f	getVertex(int i)
java.util.ArrayList<org.jogamp.vecmath.Point2f>	getVertices()
void	setVertices(java.util.ArrayList<org.jogamp.vecmath.Point2f> vertices)

Methods inherited from class mgui.geometry.Shape2D

clone, getBounds, getCenterPt, getCoords, getDTD, getLocalName, getProximity, getProximityPoint, getShortXML, getSize, getVertices, getXML, getXML, getXMLSchema, handleXMLElementEnd, handleXMLElementStart, handleXMLString, setCoords, setVertices, transform, transform, writeXML, writeXML, writeXML

Methods inherited from class java.lang.Object

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

Constructor Details

Triangle2D

public Triangle2D()

Triangle2D

public Triangle2D(org.jogamp.vecmath.Point2f p1,
org.jogamp.vecmath.Point2f p2,
org.jogamp.vecmath.Point2f p3)

Triangle2D

public Triangle2D(java.util.ArrayList<org.jogamp.vecmath.Point2f> nodes)

Method Details

getVertices

public java.util.ArrayList<org.jogamp.vecmath.Point2f> getVertices()

Specified by:

getVertices in class Shape2D

setVertices

public void setVertices(java.util.ArrayList<org.jogamp.vecmath.Point2f> vertices)

Specified by:

setVertices in class Shape2D

getVertex

public org.jogamp.vecmath.Point2f getVertex(int i)

Specified by:

getVertex in class Shape2D

contains

public boolean contains(org.jogamp.vecmath.Point2f p)

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 Shape2D