bprocessor-commit

[Michael L. <he...@us...>]

Update of /cvsroot/bprocessor/test/src/net/sourceforge/bprocessor/test
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv14544/src/net/sourceforge/bprocessor/test

Added Files:
	HandedNess.java 
Log Message:
The turn direction of edges with respect to a coordinate-system now takes the orientation of the coordinatesystem into account.

The sign of the determinant of a coordinatesystem determines the orientation of the coordinatesystem.

The reference output of the directions test has been updated to reflect the above changes.

--- NEW FILE: HandedNess.java ---
//---------------------------------------------------------------------------------
// $Id: HandedNess.java,v 1.1 2006/12/08 13:37:05 henryml Exp $
//
// Copyright (c) 2005      The BProcessor Team (http://bprocessor.sourceforge.net) 
// Released under the Lesser GNU Public License v2.1
//---------------------------------------------------------------------------------

package net.sourceforge.bprocessor.test;

import java.io.File;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import net.sourceforge.bprocessor.model.CoordinateSystem;
import net.sourceforge.bprocessor.model.Entity;
import net.sourceforge.bprocessor.model.Persistence;
import net.sourceforge.bprocessor.model.Project;
import net.sourceforge.bprocessor.model.Surface;
import net.sourceforge.bprocessor.model.Vertex;

/**
 *
 */
public class HandedNess {
  /**
   * Runs this test on the file named by args[0]
   * @param args arguments are filename
   */
  public static void main(String[] args) {
    File input = new File(args[0]);
    try {
      Persistence.load(input);
      test(Project.getInstance().world().getSurfaces());
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  
  private static void test(Collection surfaces) {
    List sorted = new LinkedList(surfaces);
    Entity.sort(sorted);
    Vertex origin = new Vertex(0, 0, 0);
    Vertex i = new Vertex(1, 0, 0);
    Vertex j = new Vertex(0, 1, 0);
    Vertex k = new Vertex(0, 0, 1);
    System.out.println("  basics:");
    System.out.println("    i * j X k = " + box(i, j, k));
    System.out.println("    i * j X -k = " + box(i, j, origin.minus(k)));
    
    
    CoordinateSystem xy = new CoordinateSystem(i, j, k, origin);
    CoordinateSystem yx = new CoordinateSystem(j, i, k, origin);
    CoordinateSystem xynegz = new CoordinateSystem(i, j, origin.minus(k), origin);
    CoordinateSystem yz = new CoordinateSystem(j, k, i, origin);
    CoordinateSystem zx = new CoordinateSystem(k, i, j, origin);
    
    print(xy);
    print(yx);
    print(xynegz);
    print(yz);
    print(zx);
    
    print(sorted);
  }
  
  private static double box(Vertex i, Vertex j, Vertex k) {
    return i.dot(j.cross(k));
  }
  
  private static double box(CoordinateSystem system) {
    return system.determinant();
  }
  
  private static void print(CoordinateSystem system) {
    System.out.println("    " + system + " box = " + box(system));
  }
  
  private static void print(List surfaces) {
    System.out.println("  surfaces own coordinate-systems:");
    Iterator iter = surfaces.iterator();
    while (iter.hasNext()) {
      Surface current = (Surface) iter.next();
      CoordinateSystem system = current.coordinateSystem();
      System.out.println("    " + current.getName() + ": " + system + " box = " + box(system));
    }
  }
}