transform2sg.cxx

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/**
 * 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 transform2sg.cxx
 * @author drose
 * @date 2002-03-12
 */

#include "transform2sg.h"
#include "transformState.h"
#include "dataNodeTransmit.h"
#include "dataGraphTraverser.h"


TypeHandle Transform2SG::_type_handle;

/**
 *
 */
Transform2SG::
Transform2SG(const std::string &name) :
  DataNode(name)
{
  _transform_input = define_input("transform", TransformState::get_class_type());

  _node = nullptr;
}

/**
 * Sets the node that this object will adjust.
 */
void Transform2SG::
set_node(PandaNode *node) {
  _node = node;
}

/**
 * Returns the node that this object will adjust, or NULL if the node has not
 * yet been set.
 */
PandaNode *Transform2SG::
get_node() const {
  return _node;
}


/**
 * The virtual implementation of transmit_data().  This function receives an
 * array of input parameters and should generate an array of output
 * parameters.  The input parameters may be accessed with the index numbers
 * returned by the define_input() calls that were made earlier (presumably in
 * the constructor); likewise, the output parameters should be set with the
 * index numbers returned by the define_output() calls.
 */
void Transform2SG::
do_transmit_data(DataGraphTraverser *trav, const DataNodeTransmit &input,
                 DataNodeTransmit &) {
  Thread *current_thread = trav->get_current_thread();

  if (input.has_data(_transform_input)) {
    const TransformState *transform;
    DCAST_INTO_V(transform, input.get_data(_transform_input).get_ptr());
    if (_node != nullptr) {
      _node->set_transform(transform, current_thread);
    }
  }
}