SimplexCache.java

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 * Copyright (c) 2011, Daniel Murphy
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package org.jbox2d.structs.collision.distance;


/**
 *  Used to warm start b2Distance.
 *  Set count to zero on first call.
 * @author daniel
 */
public class SimplexCache {
	/**
	 * length or area
	 */
	public float metric;
	
	public int count;
	
	/**
	 * vertices on shape A
	 */
	public final int indexA[] = new int[3];
	
	/**
	 * vertices on shape B
	 */
	public final int indexB[] = new int[3];
	
	public SimplexCache(){
		metric = 0;
		count = 0;
		indexA[0] = Integer.MAX_VALUE;
		indexA[1] = Integer.MAX_VALUE;
		indexA[2] = Integer.MAX_VALUE;
		indexB[0] = Integer.MAX_VALUE;
		indexB[1] = Integer.MAX_VALUE;
		indexB[2] = Integer.MAX_VALUE;
	}

	public void set(SimplexCache sc){
		System.arraycopy(sc.indexA, 0, indexA, 0, indexA.length);
		System.arraycopy(sc.indexB, 0, indexB, 0, indexB.length);
		metric = sc.metric;
		count = sc.count;
	}
}