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Java/transform/ChangeDim.java

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+/*   
+ChangeDim.java
+ *    
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
+ *    the licenses.
+ *
+ *    This software is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the README
+ *    file for more details.
+ *
+ */
+/*
+ * Written by Tuukka Hastrup
+ */
+package org.gzigzag.transform;
+import java.util.*;
+import org.gzigzag.*;
+
+/** ZZspace dimension changer - substitute a dimension name with another 
+ */
+
+public class ChangeDim {
+String rcsid = "$Id: ChangeDim.java,v 1.5 2000/10/18 14:35:32 tjl Exp $";
+    String olddim, newdim;
+    ZZSpace space;
+/** Constructs dimension changer for a space
+ *  @param od		The old dimension
+ *  @param nd		The new dimension
+ *  @param s		The space to convert
+ */
+    public ChangeDim(String od, String nd, ZZSpace s) {
+	olddim = od;
+	newdim = nd;
+	space = s;
+    }
+
+/** Performs the actual transformation. All connections along the old
+ *  dimension are disconnected and new ones connected along the new dimension.
+ */
+    public void transform() {
+	Enumeration e=space.cells();
+	ZZCell c, n;
+	while(e.hasMoreElements()) {
+	    c = (ZZCell)e.nextElement();
+	    n = c.s(olddim, 1);
+	    if(n!=null) {
+	        c.disconnect(olddim, 1);
+	        c.connect(newdim, 1, n);
+	    }
+	}
+    }
+}