/* * va_Merge_vav.java */package EDU.gatech.cc.is.clay;import java.lang.*;import EDU.gatech.cc.is.util.Vec2;import EDU.gatech.cc.is.util.Units;/** * Merge a Vec2 into a Vec2Array. * <P> * For detailed information on how to configure behaviors, see the * <A HREF="../clay/docs/index.html">Clay page</A>. * <P> * <A HREF="../COPYRIGHT.html">Copyright</A> * (c)1997, 1998 Tucker Balch * * @author Tucker Balch * @version $Revision: 1.1 $ */public class va_Merge_vav extends NodeVec2Array	{	public static final boolean DEBUG = Node.DEBUG;	private NodeVec2Array	embedded1;	private NodeVec2	embedded2;	/**	 * Instantiate a va_Merge_vav schema.	 * @param im1 NodeVec2Array, embedded node that generates a list	 *	of items to merge.	 * @param im2 NodeVec2, the other embedded node that generates an item	 *	of items to merge.	 */	public va_Merge_vav(NodeVec2Array im1, NodeVec2 im2)		{		if (DEBUG) System.out.println("va_Merge_vav: instantiated.");		embedded1 = im1;		embedded2 = im2;		}	Vec2	last_val[] = new Vec2[0];	long	lasttime = 0;	/**	 * Return a Vec2Array that is the merge of two others.	 * @param timestamp long, only get new information 	 * 	if timestamp > than last call or timestamp == -1.	 * @return the merged list.	 */	public Vec2[] Value(long timestamp)		{		if ((timestamp > lasttime)||(timestamp == -1))			{			/*--- reset the timestamp ---*/			if (timestamp > 0) lasttime = timestamp;			/*--- get info from imbedded schemas ---*/			Vec2[] im1 = embedded1.Value(timestamp);			Vec2[] im2 = new Vec2[1];			im2[0] = embedded2.Value(timestamp);			last_val = new Vec2[im1.length + im2.length];			/*--- merge ---*/			for (int i=0; i<im1.length; i++)				last_val[i] = im1[i];			for (int i=im1.length; i<(im1.length+im2.length); i++)				last_val[i] = im2[i-im1.length];			}                Vec2[] retval = new Vec2[last_val.length];                for(int i = 0; i<last_val.length; i++)                        retval[i] = new Vec2(last_val[i].x,                                last_val[i].y);                return(retval);		}        }