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Java/flob/CompassView.zob

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+/*
+CompassRaster.zob
+ *
+ *    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;
+
+import java.awt.Dimension;
+import java.lang.Math;
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.util.Vector;
+
+
+public class CompassView implements FlobView, ZOb { 
+public static final String rcsid = "$Id$";
+    public static boolean dbg = true;
+    static final void p(String s) { if(dbg) System.out.println(s); }
+    static final void pa(String s) { System.out.println(s); }
+
+    STRUCTPARAMS {
+	Font dfont = new Font("SansSerif", Font.PLAIN, 12);
+    }
+
+    int dfonth;
+    FontMetrics dfm;
+
+    INITIALIZE {
+	dfm = FONTMETRICS(dfont);
+	dfonth = dfm.getHeight();
+    }
+    
+
+    public void raster(FlobSet into, FlobFactory fact, ZZCell view, 
+			String[]vds, ZZCell accursed) {
+    
+	Dimension d = into.getSize();
+	int midx = d.width / 2;
+	int midy = d.height / 2;
+	Dimension c = fact.getSize(null, 1);
+	int cw = c.width;
+	int ch = c.height;
+	
+	ZZCell stdim = ZZCursorReal.get(view.s("d.dims", 1));
+
+/*	ZZConnection[] conns = accursed.getConns();
+	for (int i = 0; i < conns.length; i++)
+		System.out.println("Conn #" + i + ": " +
+				   conns[i].c1.getID() + "-<" +
+				   conns[i].c2.getID() + (conns[i].dir == -1 ?
+							  "-" : "") +
+				   conns[i].dim + ">-" +
+				   conns[i].c2.getID());*/
+				   
+	Vector dims = new Vector(); // Dims to be drawn
+	Vector pos = new Vector(); // Cells to positive directions to be drawn
+	Vector neg = new Vector(); // Cells to negative directions to be drawn
+
+	ZZCell dim, pc, nc;
+	dim=stdim;
+	do { // Go through the DimList starting from the x-axis dimension
+	    String cdim = dim.getText();
+	    p("Found dim: "+cdim);
+	    pc = accursed.s(cdim, 1);
+	    nc = accursed.s(cdim, -1);
+	    if(nc != null || pc != null) {
+		dims.addElement(cdim);
+		pos.addElement(pc);
+		neg.addElement(nc);
+	    }
+	    dim = dim.s("d.2", 1);
+	} while(dim != stdim); // Do until loop closes
+
+	int numdirs = pos.size()+neg.size(); // Number of cells and thus sectors
+	if(numdirs == 0)
+		return; // No cells to draw
+	double angle = 2 * Math.PI / (numdirs);
+	int l = (int) ((d.height < d.width ? d.height : d.width) / 2 * 0.5);
+
+	fact.makeFlob(into, accursed, accursed, 1,
+		       (d.width-cw) / 2, (d.height-ch) / 2, 1, cw, ch);
+
+	int i = 0;
+	LineDecor.Builder nldb = new LineDecor.Builder(into, Color.black);
+	LineDecor.Builder pldb = new LineDecor.Builder(into, Color.red);
+	nldb.startl(numdirs/2*4, 12);
+	pldb.startl(numdirs/2*4, 12);
+	
+	double a = (double)-2/3*Math.PI; // Begin placing positive cells top left
+	while (i < numdirs/2) {
+	    int dx = x(a, l);
+	    int dy = y(a, l);
+	    
+	    if(pos.elementAt(i)!=null) {
+		fact.makeFlob(into, (ZZCell)pos.elementAt(i), (ZZCell)pos.elementAt(i),
+		    (float) 0.7,
+		    midx + dx-cw/2, midy + dy-ch/2,
+		    1, cw, ch);
+		pldb.l(midx, midy, midx + dx, midy + dy);
+		into.add(new TextDecor(
+			midx+dx+cw/2-dfm.stringWidth("+"+(String)dims.elementAt(i)), 
+			midy+dy-ch/2, "+"+(String)dims.elementAt(i), Color.red, dfont));
+	    }
+	    if(neg.elementAt(i)!=null) {
+		fact.makeFlob(into, (ZZCell)neg.elementAt(i), (ZZCell)neg.elementAt(i),
+		    (float) 0.7,
+		    midx -dx -cw/2, midy -dy -ch/2,
+		    1, cw, ch);
+		nldb.l(midx, midy, midx -dx, midy -dy);
+		into.add(new TextDecor(
+			midx-dx-cw/2, midy-dy+ch/2+dfonth, 
+			"-"+(String)dims.elementAt(i), Color.black, dfont));
+	    }
+		
+	    i++;
+	    a += angle; // Rotate clockwise
+	}
+	nldb.endl();
+	pldb.endl();
+    }
+
+    protected int x(double angle, int length) {
+	return (int) (Math.cos(angle) * length);
+    } 
+    
+    protected int y(double angle, int length) {
+	return (int) (Math.sin(angle) * length);
+    }
+}
+
+// vim: set syntax=java :