/**
 * 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 vertexTransform.I
 * @author drose
 * @date 2005-03-23
 */

/**
 * Returns a sequence number that's guaranteed to change at least every time
 * the value reported by get_matrix() changes.
 */
INLINE UpdateSeq VertexTransform::
get_modified(Thread *current_thread) const {
  CDReader cdata(_cycler, current_thread);
  return cdata->_modified;
}

/**
 * Returns the currently highest VertexTransform::get_modified() value in the
 * world.  This can be used as a quick way to determine if any
 * VertexTransforms have changed value recently.
 */
INLINE UpdateSeq VertexTransform::
get_global_modified(Thread *current_thread) {
  CDReader cdata(_global_cycler, current_thread);
  return cdata->_modified;
}

/**
 *
 */
INLINE VertexTransform::CData::
CData() {
}

/**
 *
 */
INLINE VertexTransform::CData::
CData(const VertexTransform::CData &copy) :
  _modified(copy._modified)
{
}

INLINE std::ostream &
operator << (std::ostream &out, const VertexTransform &obj) {
  obj.output(out);
  return out;
}