[Bprocessor-commit] model/src/net/sourceforge/bprocessor/model Plane.java,NONE,1.1 Surface.java,1.11,1.12

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

Update of /cvsroot/bprocessor/model/src/net/sourceforge/bprocessor/model
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv27697/src/net/sourceforge/bprocessor/model

Modified Files:
	Surface.java 
Added Files:
	Plane.java 
Log Message:
Added a Plane class

Index: Surface.java
===================================================================
RCS file: /cvsroot/bprocessor/model/src/net/sourceforge/bprocessor/model/Surface.java,v
retrieving revision 1.11
retrieving revision 1.12
diff -C2 -d -r1.11 -r1.12
*** Surface.java	22 Aug 2005 08:46:44 -0000	1.11
--- Surface.java	25 Aug 2005 14:32:37 -0000	1.12
***************
*** 132,136 ****
  
    /**
!    * returns the normal to this
     * @return A vector normal for this surface, null if the surface consists of only one edge 
     */
--- 132,136 ----
  
    /**
!    * Returns the normal to this
     * @return A vector normal for this surface, null if the surface consists of only one edge 
     */
***************
*** 154,157 ****
--- 154,176 ----
      return null;
    }
+   
+   /**
+    * Returns the Plane that this Surface lies in
+    * @return The Plane for this Surface
+    */
+   
+   Plane plane() {
+     double d = 0;
+     Vertex n = normal();
+     double l = n.length();
+     n.scale(1 / l);
+     double a = n.getX();
+     double b = n.getY();
+     double c = n.getZ();
+     Edge e1 = (Edge) edges.get(0);
+     Vertex v1 = e1.getFrom();
+     d = -(a * v1.getX() + b * v1.getY() + c * v1.getZ());
+     return new Plane(a, b, c, d);
+   }
  
    /**

--- NEW FILE: Plane.java ---
//---------------------------------------------------------------------------------
// $Id: Plane.java,v 1.1 2005/08/25 14:32:37 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.model;

/**
 * The Plane
 * A Plane is defined by the equation 
 *    Ax + By + Cy + D = 0
 */
public class Plane {
  
  /** The coefficient a */
  private double a;
  
  /** The coefficient b */
  private double b;
  
  /** The coefficient c */
  private double c;
  
  /** The coefficient d */
  private double d;
  
  
  /**
   * Constructor
   * @param a the a
   * @param b the b
   * @param c the c
   * @param d the d
   */
  public Plane(double a, double b, double c, double d) {
    super();
    this.a = a;
    this.b = b;
    this.c = c;
    this.d = d;
  }
  
  /**
   * Find the intersection with the ray (x y t)
   * @param x the x
   * @param y the y
   * @return the intersection with the (x y t) ray
   */
  double intersection(double x, double y) {
    
    return 0;
  }

}