159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/* 259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Copyright (c) 2009-2010 jMonkeyEngine 359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * All rights reserved. 459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Redistribution and use in source and binary forms, with or without 659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * modification, are permitted provided that the following conditions are 759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * met: 859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions of source code must retain the above copyright 1059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer. 1159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions in binary form must reproduce the above copyright 1359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer in the 1459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * documentation and/or other materials provided with the distribution. 1559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 1759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * may be used to endorse or promote products derived from this software 1859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * without specific prior written permission. 1959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 2059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 2459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 2559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 2659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 2759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 2859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 2959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 3259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3359b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapackage com.jme3.collision; 3459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.math.Triangle; 3659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.math.Vector3f; 3759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.Geometry; 3859b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.scene.Mesh; 3959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 4059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/** 4159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * A <code>CollisionResult</code> represents a single collision instance 4259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * between two {@link Collidable}. A collision check can result in many 4359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * collision instances (places where collision has occured). 4459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 4559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @author Kirill Vainer 4659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 4759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapublic class CollisionResult implements Comparable<CollisionResult> { 4859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 4959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private Geometry geometry; 5059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private Vector3f contactPoint; 5159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private Vector3f contactNormal; 5259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private float distance; 5359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta private int triangleIndex; 5459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 5559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public CollisionResult(Geometry geometry, Vector3f contactPoint, float distance, int triangleIndex) { 5659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.geometry = geometry; 5759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.contactPoint = contactPoint; 5859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.distance = distance; 5959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.triangleIndex = triangleIndex; 6059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 6159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public CollisionResult(Vector3f contactPoint, float distance) { 6359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.contactPoint = contactPoint; 6459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.distance = distance; 6559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 6659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public CollisionResult(){ 6859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 6959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void setGeometry(Geometry geom){ 7159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.geometry = geom; 7259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void setContactNormal(Vector3f norm){ 7559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.contactNormal = norm; 7659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void setContactPoint(Vector3f point){ 7959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.contactPoint = point; 8059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 8159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 8259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void setDistance(float dist){ 8359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.distance = dist; 8459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 8559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 8659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public void setTriangleIndex(int index){ 8759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta this.triangleIndex = index; 8859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 8959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 9059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Triangle getTriangle(Triangle store){ 9159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (store == null) 9259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta store = new Triangle(); 9359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 9459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta Mesh m = geometry.getMesh(); 9559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta m.getTriangle(triangleIndex, store); 9659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta store.calculateCenter(); 9759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta store.calculateNormal(); 9859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return store; 9959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 10059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 10159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int compareTo(CollisionResult other) { 10259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (distance < other.distance) 10359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return -1; 10459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta else if (distance > other.distance) 10559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return 1; 10659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta else 10759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return 0; 10859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 10959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 11059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta @Override 11159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public boolean equals(Object obj) { 11259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if(obj instanceof CollisionResult){ 11359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return ((CollisionResult)obj).compareTo(this) == 0; 11459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 11559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return super.equals(obj); 11659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 11759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 11859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Vector3f getContactPoint() { 11959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return contactPoint; 12059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Vector3f getContactNormal() { 12359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return contactNormal; 12459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 12659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public float getDistance() { 12759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return distance; 12859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 12959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public Geometry getGeometry() { 13159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return geometry; 13259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public int getTriangleIndex() { 13559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta return triangleIndex; 13659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 13759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 13859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta} 139