com.badlogic.gdx.physics.box2d.WorldManifold.java Source code

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Here is the source code for com.badlogic.gdx.physics.box2d.WorldManifold.java

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/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.physics.box2d;

import com.badlogic.gdx.math.Vector2;

/** This is used to compute the current state of a contact manifold. */
public class WorldManifold {
    protected final Vector2 normal = new Vector2();
    protected final Vector2[] points = { new Vector2(), new Vector2() };
    protected final float[] separations = new float[2];
    protected int numContactPoints;

    protected WorldManifold() {
    }

    protected WorldManifold(org.jbox2d.collision.WorldManifold manifold) {
        normal.set(manifold.normal.x, manifold.normal.y);
        for (int i = 0; i < manifold.points.length; i++) {
            points[i].set(manifold.points[i].x, manifold.points[i].y);
        }
        numContactPoints = manifold.points.length;
        separations[0] = manifold.separations[0];
        separations[1] = manifold.separations[1];
    }

    /** Returns the normal of this manifold */
    public Vector2 getNormal() {
        return normal;
    }

    /** Returns the contact points of this manifold. Use getNumberOfContactPoints to determine how many contact points there are
     * (0,1 or 2) */
    public Vector2[] getPoints() {
        return points;
    }

    /** Returns the separations of this manifold, a negative value indicates overlap, in meters. Use getNumberOfContactPoints to
     * determine how many separations there are (0,1 or 2) */
    public float[] getSeparations() {
        return separations;
    }

    /** @return the number of contact points */
    public int getNumberOfContactPoints() {
        return numContactPoints;
    }
}