Panda3D
 All Classes Functions Variables Enumerations
cConstrainPosHprInterval.cxx
00001 // Filename: cConstrainPosHprInterval.cxx
00002 // Created by:  pratt (10Mar08)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #include "cConstrainPosHprInterval.h"
00016 #include "config_interval.h"
00017 #include "lvecBase3.h"
00018 
00019 TypeHandle CConstrainPosHprInterval::_type_handle;
00020 
00021 ////////////////////////////////////////////////////////////////////
00022 //     Function: CConstrainPosHprInterval::Constructor
00023 //       Access: Published
00024 //  Description: Constructs a constraint interval that will constrain
00025 //               the position and orientation of one node to the
00026 //               position and orientation of another.
00027 //
00028 //               If wrt is true, the node's position and orientation
00029 //               will be transformed into the target node's parent's
00030 //               space before being copied.  If wrt is false, the
00031 //               target node's local position and orientation will be
00032 //               copied unaltered.
00033 ////////////////////////////////////////////////////////////////////
00034 CConstrainPosHprInterval::
00035 CConstrainPosHprInterval(const string &name, double duration,
00036                          const NodePath &node, const NodePath &target,
00037                          bool wrt, const LVecBase3 posOffset,
00038                          const LVecBase3 hprOffset) :
00039   CConstraintInterval(name, duration),
00040   _node(node),
00041   _target(target),
00042   _wrt(wrt),
00043   _posOffset(posOffset)
00044 {
00045   _quatOffset.set_hpr(hprOffset);
00046 }
00047 
00048 ////////////////////////////////////////////////////////////////////
00049 //     Function: CConstrainPosHprInterval::step
00050 //       Access: Published, Virtual
00051 //  Description: Advances the time on the interval.  The time may
00052 //               either increase (the normal case) or decrease
00053 //               (e.g. if the interval is being played by a slider).
00054 ////////////////////////////////////////////////////////////////////
00055 void CConstrainPosHprInterval::
00056 priv_step(double t) {
00057   check_started(get_class_type(), "priv_step");
00058   _state = S_started;
00059   _curr_t = t;
00060 
00061   if(! _target.is_empty()) {
00062     if(_wrt) {
00063       if(! _node.is_same_graph(_target)){
00064         interval_cat.warning()
00065           << "Unable to copy position and orientation in CConstrainPosHprInterval::priv_step;\n"
00066           << "node (" << _node.get_name()
00067           << ") and target (" << _target.get_name()
00068           << ") are not in the same graph.\n";
00069         return;
00070       }
00071       _target.set_pos_quat(_node, _posOffset, _quatOffset);
00072     } else {
00073       _target.set_pos_quat(_node.get_pos() + _posOffset, _quatOffset*_node.get_quat());
00074     }
00075   }
00076 }
00077 
00078 ////////////////////////////////////////////////////////////////////
00079 //     Function: CConstrainPosHprInterval::output
00080 //       Access: Published, Virtual
00081 //  Description: 
00082 ////////////////////////////////////////////////////////////////////
00083 void CConstrainPosHprInterval::
00084 output(ostream &out) const {
00085   out << get_name() << ":";
00086   out << " dur " << get_duration();
00087 }
 All Classes Functions Variables Enumerations