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Postscript.java

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/* -*- indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Guido Tack <tack@gecode.org>
 *
 *  Copyright:
 *     Guido Tack, 2006
 *
 *  Last modified:
 *     $Date: 2006-02-09 16:32:56 +0100 (Thu, 09 Feb 2006) $ by $Author: tack $
 *     $Revision: 2943 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  See the file "LICENSE" for information on usage and
 *  redistribution of this file, and for a
 *     DISCLAIMER OF ALL WARRANTIES.
 *
 */

package org.gecode.gist.postscript;

import org.gecode.gist.*;
import java.io.*;
import java.util.*;

public class Postscript {

    private static final double scale = 0.72;
    private static final double translatex = 306.0;
    private static final double translatey = 396.0;
    
    private static final int translatexI = 311;
    private static final int translateyI = 390;

    public static void emitComments(Writer out, BoundingBox b) throws IOException
    {
        int maxx=b.maxx+10;
        out.write("%!PS-Adobe-3.0 EPSF-3.0\n");
        out.write("%%Creator: Gecode/J PS library\n");
        out.write("%%For: Who knows?\n");
        out.write("%%Title: figure\n");
        out.write("%%CreationDate: Fri Jul 16 13:58:16 2004\n");
        out.write("%%BoundingBox: "+b.minx+" "+b.miny+" "+
                  maxx+" "+b.maxy+"\n");
        out.write("%%Pages: 1\n");
        out.write("%%DocumentData: Clean7Bit\n");
        out.write("%%Orientation: Portrait\n");
        out.write("%%EndComments\n\n");
    }

    public static void emitHeader(Writer out) throws IOException
    {
        out.write("%%BeginProlog\n");
        out.write("50 dict begin\n\n");
        out.write("%%EndProlog\n");
        out.write("%%Page: 1 1\n");
        out.write("save\n");
        out.write(translatexI+" "+translateyI+" translate\n");
        out.write(scale+" "+scale+" scale\n");
    }

    public static void emitFooter(Writer out) throws IOException
    {
        out.write("restore showpage\n\n"+
                  "%%Trailer\n"+
                  "end\n"+
                  "%%EOF\n");
    }
    
    private static void savePath(ArrayList<Path> ps, File f)
                        throws IOException
    {
        BoundingBox b = new BoundingBox(100000,0,100000,0);
        for (Path p : ps) {
            b.merge(p.bb());
        }
        b.translate(scale, translatex, translatey);
        Writer out = new BufferedWriter(new FileWriter(f));
        emitComments(out, b);
        emitHeader(out);
        for (Path p : ps) {
            p.emit(out);
        }
        emitFooter(out);
        out.close();
    }
    public static void saveAs(SpaceNode root, File f)
                       throws IOException
    {
        ArrayList<Path> ps = new ArrayList<Path>();
        PostscriptCursor cursor = new PostscriptCursor(root, ps);
        PreOrderNodeVisitor visitor = new PreOrderNodeVisitor(cursor);
        visitor.run();
        
        savePath(ps, f);
    }
}