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/*
* Copyright (c) 2009-2010 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.collision;
import com.jme3.math.Triangle;
import com.jme3.math.Vector3f;
import com.jme3.scene.Geometry;
import com.jme3.scene.Mesh;
/**
* A <code>CollisionResult</code> represents a single collision instance
* between two {@link Collidable}. A collision check can result in many
* collision instances (places where collision has occured).
*
* @author Kirill Vainer
*/
public class CollisionResult implements Comparable<CollisionResult> {
private Geometry geometry;
private Vector3f contactPoint;
private Vector3f contactNormal;
private float distance;
private int triangleIndex;
public CollisionResult(Geometry geometry, Vector3f contactPoint, float distance, int triangleIndex) {
this.geometry = geometry;
this.contactPoint = contactPoint;
this.distance = distance;
this.triangleIndex = triangleIndex;
}
public CollisionResult(Vector3f contactPoint, float distance) {
this.contactPoint = contactPoint;
this.distance = distance;
}
public CollisionResult(){
}
public void setGeometry(Geometry geom){
this.geometry = geom;
}
public void setContactNormal(Vector3f norm){
this.contactNormal = norm;
}
public void setContactPoint(Vector3f point){
this.contactPoint = point;
}
public void setDistance(float dist){
this.distance = dist;
}
public void setTriangleIndex(int index){
this.triangleIndex = index;
}
public Triangle getTriangle(Triangle store){
if (store == null)
store = new Triangle();
Mesh m = geometry.getMesh();
m.getTriangle(triangleIndex, store);
store.calculateCenter();
store.calculateNormal();
return store;
}
public int compareTo(CollisionResult other) {
if (distance < other.distance)
return -1;
else if (distance > other.distance)
return 1;
else
return 0;
}
@Override
public boolean equals(Object obj) {
if(obj instanceof CollisionResult){
return ((CollisionResult)obj).compareTo(this) == 0;
}
return super.equals(obj);
}
public Vector3f getContactPoint() {
return contactPoint;
}
public Vector3f getContactNormal() {
return contactNormal;
}
public float getDistance() {
return distance;
}
public Geometry getGeometry() {
return geometry;
}
public int getTriangleIndex() {
return triangleIndex;
}
}
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