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Java/part/DoubleStepPart.java

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+/*   
+DoubleStepPart.java
+ *    
+ *    Copyright (c) 2000, Ted Nelson and Tuomas Lukka
+ *
+ *    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 Tuomas Lukka
+ */
+package org.gzigzag;
+import java.util.*;
+
+/** <b>EXPERIMENTAL:</b> A dimension double-stepper part.
+ * This part, unlike most, has none of its own cells but simply
+ * provides for each dimension a doubling dimension.
+ */
+
+public class DoubleStepPart extends ZZROStrSpacePart {
+public static final String rcsid = "$Id: DoubleStepPart.java,v 1.1 2000/11/06 12:39:39 tjl Exp $";
+    public static final boolean dbg = false;
+    static void p(String s) { if(dbg) System.out.println(s); }
+
+    public DoubleStepPart(ZZSpace space, String id) {
+	super(space, id);
+    }
+
+    public String homeID() { 
+	return "1";
+    }
+
+    public String getText(ZZCellHandle c) {
+	return c.id.substring(c.id.length()-1);
+    }
+
+    public ZZDimension getDim(String name) {
+	return new Dbl(space.d(name));
+    }
+
+    public class Dbl extends ZZRODimension {
+	ZZDimension dim;
+	public Dbl(ZZDimension dim) {
+	    this.dim = dim;
+	}
+	public ZZCellHandle s(ZZCellHandle c, int steps, ZZObs o) {
+	    ZZCellHandle hd = dim.s(c, steps*2, o);
+	    p("Dbl: Step "+steps+" "+c+" "+hd);
+	    return hd;
+	}
+    }
+}
+