// Filename: lightLensNode.I
// Created by:  drose (26Mar02)
//
////////////////////////////////////////////////////////////////////
//
// 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."
//
////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////
//     Function: LightLensNode::is_shadow_caster
//       Access: Published
//  Description: Returns whether this light is configured to cast
//               shadows or not.
////////////////////////////////////////////////////////////////////
INLINE bool LightLensNode::
is_shadow_caster() {
  return _shadow_caster;
}

////////////////////////////////////////////////////////////////////
//     Function: LightLensNode::set_shadow_caster
//       Access: Published
//  Description: Sets the flag indicating whether this light should
//               cast shadows or not. This is the variant without
//               buffer size, meaning that the current buffer size
//               will be kept (512x512 is the default).
//               Note that enabling shadows will require the shader
//               generator to be enabled on the scene.
////////////////////////////////////////////////////////////////////
INLINE void LightLensNode::
set_shadow_caster(bool caster) {
  if (_shadow_caster && !caster) {
    clear_shadow_buffers();
  }
  _shadow_caster = caster;
  set_active(caster);
}

////////////////////////////////////////////////////////////////////
//     Function: LightLensNode::set_shadow_caster
//       Access: Published
//  Description: Sets the flag indicating whether this light should
//               cast shadows or not. The xsize and ysize parameters
//               specify the size of the shadow buffer that will be
//               set up, the sort parameter specifies the sort.
//               Note that enabling shadows will require the shader
//               generator to be enabled on the scene.
////////////////////////////////////////////////////////////////////
INLINE void LightLensNode::
set_shadow_caster(bool caster, int buffer_xsize, int buffer_ysize, int buffer_sort) {
  if ((_shadow_caster && !caster) || buffer_xsize != _sb_xsize || buffer_ysize != _sb_ysize) {
    clear_shadow_buffers();
  }
  _shadow_caster = caster;
  _sb_xsize = buffer_xsize;
  _sb_ysize = buffer_ysize;
  if (buffer_sort != _sb_sort) {
    ShadowBuffers::iterator it;
    for(it = _sbuffers.begin(); it != _sbuffers.end(); ++it) {
      (*it).second->set_sort(buffer_sort);
    }
    _sb_sort = buffer_sort;
  }
  set_active(caster);
}