text: /**
   * PANDA 3D SOFTWARE
   * Copyright (c) Carnegie Mellon University.  All rights reserved.
   *
   * All use of this software is subject to the terms of the revised BSD
   * license.  You should have received a copy of this license along
   * with this source code in a file named "LICENSE."
   *
   * @file rectangleEmitter.cxx
   * @author charles
   * @date 2000-06-22
   */
  
  #include "rectangleEmitter.h"
  
  /**
   * constructor
   */
  RectangleEmitter::
  RectangleEmitter() :
    BaseParticleEmitter() {
    _vmin.set(-0.5f, -0.5f);
    _vmax.set( 0.5f,  0.5f);
  }
  
  /**
   * copy constructor
   */
  RectangleEmitter::
  RectangleEmitter(const RectangleEmitter &copy) :
    BaseParticleEmitter(copy) {
    _vmin = copy._vmin;
    _vmax = copy._vmax;
  }
  
  /**
   * destructor
   */
  RectangleEmitter::
  ~RectangleEmitter() {
  }
  
  /**
   * copier
   */
  BaseParticleEmitter *RectangleEmitter::
  make_copy() {
    return new RectangleEmitter(*this);
  }
  
  /**
   * Generates a location for a new particle
   */
  void RectangleEmitter::
  assign_initial_position(LPoint3& pos) {
    PN_stdfloat t_x = NORMALIZED_RAND();
    PN_stdfloat t_y = NORMALIZED_RAND();
  
    LVector2 v_diff = _vmax - _vmin;
  
    PN_stdfloat lerp_x = _vmin[0] + t_x * v_diff[0];
    PN_stdfloat lerp_y = _vmin[1] + t_y * v_diff[1];
  
    pos.set(lerp_x, lerp_y, 0.0f);
  }
  
  /**
   * Generates a velocity for a new particle
   */
  void RectangleEmitter::
  assign_initial_velocity(LVector3& vel) {
    vel.set(0.0f,0.0f,0.0f);
  }
  
  /**
   * Write a string representation of this instance to <out>.
   */
  void RectangleEmitter::
  output(std::ostream &out) const {
    #ifndef NDEBUG //[
    out<<"RectangleEmitter";
    #endif //] NDEBUG
  }
  
  /**
   * Write a string representation of this instance to <out>.
   */
  void RectangleEmitter::
  write(std::ostream &out, int indent) const {
    #ifndef NDEBUG //[
    out.width(indent); out<<""; out<<"RectangleEmitter:\n";
    out.width(indent+2); out<<""; out<<"_vmin "<<_vmin<<"\n";
    out.width(indent+2); out<<""; out<<"_vmax "<<_vmax<<"\n";
    BaseParticleEmitter::write(out, indent+2);
    #endif //] NDEBUG
  }
  