289 - Rotation Matrix

//
//  RotationMatrix.java
//  Easel
//
//  Created by Philip Rhodes on 7/28/05.
//  Copyright 2005 __MyCompanyName__. All rights reserved.
//

/** Abstract parent class of all rotation matrices. */
public abstract class RotationMatrix extends Matrix {

   /** All rotation matrices should support this method, which
    *  sets the angle of rotation. The angle is expressed in radians
    */
   public abstract void setAngle(double theta);

   /** Calling this method on a rotation matrix is dangerous, since the
    *  result may no longer be a rotation matrix.
    */
   public void copy(Matrix m){

      System.out.println("RotationMatrix.java: copy(Matrix) can only be called on a generic Matrix.");
      System.exit(1);
   }
}