animChannelMatrixFixed.cxx

Go to the documentation of this file.

/**
 * 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 animChannelMatrixFixed.cxx
 * @author drose
 * @date 2006-01-19
 */

#include "animChannelMatrixFixed.h"
#include "compose_matrix.h"

TypeHandle AnimChannelMatrixFixed::_type_handle;

/**
 * Creates a new AnimChannelMatrixFixed, just like this one, without copying
 * any children.  The new copy is added to the indicated parent.  Intended to
 * be called by make_copy() only.
 */
AnimChannelMatrixFixed::
AnimChannelMatrixFixed(AnimGroup *parent, const AnimChannelMatrixFixed &copy) :
  AnimChannel<ACMatrixSwitchType>(parent, copy),
  _pos(copy._pos),
  _hpr(copy._hpr),
  _scale(copy._scale)
{
}

/**
 *
 */
AnimChannelMatrixFixed::
AnimChannelMatrixFixed(const std::string &name, const LVecBase3 &pos, const LVecBase3 &hpr, const LVecBase3 &scale) :
  AnimChannel<ACMatrixSwitchType>(name),
  _pos(pos), _hpr(hpr), _scale(scale)
{
}

/**
 *
 */
bool AnimChannelMatrixFixed::
has_changed(int, double, int, double) {
  return false;
}


/**
 *
 */
void AnimChannelMatrixFixed::
get_value(int, LMatrix4 &value) {
  compose_matrix(value, _scale, LVecBase3::zero(), _hpr, _pos);
}

/**
 * Gets the value of the channel at the indicated frame, without any scale or
 * shear information.
 */
void AnimChannelMatrixFixed::
get_value_no_scale_shear(int, LMatrix4 &mat) {
  compose_matrix(mat, LVecBase3(1.0f, 1.0f, 1.0f), LVecBase3::zero(),
                 _hpr, _pos);
}

/**
 * Gets the scale value at the indicated frame.
 */
void AnimChannelMatrixFixed::
get_scale(int, LVecBase3 &scale) {
  scale = _scale;
}

/**
 * Returns the h, p, and r components associated with the current frame.  As
 * above, this only makes sense for a matrix-type channel.
 */
void AnimChannelMatrixFixed::
get_hpr(int, LVecBase3 &hpr) {
  hpr = _hpr;
}

/**
 * Returns the rotation component associated with the current frame, expressed
 * as a quaternion.  As above, this only makes sense for a matrix-type
 * channel.
 */
void AnimChannelMatrixFixed::
get_quat(int, LQuaternion &quat) {
  quat.set_hpr(_hpr);
}

/**
 * Returns the x, y, and z translation components associated with the current
 * frame.  As above, this only makes sense for a matrix-type channel.
 */
void AnimChannelMatrixFixed::
get_pos(int, LVecBase3 &pos) {
  pos = _pos;
}

/**
 * Returns the a, b, and c shear components associated with the current frame.
 * As above, this only makes sense for a matrix-type channel.
 */
void AnimChannelMatrixFixed::
get_shear(int, LVecBase3 &shear) {
  shear = LVecBase3::zero();
}

/**
 *
 */
void AnimChannelMatrixFixed::
output(std::ostream &out) const {
  AnimChannel<ACMatrixSwitchType>::output(out);
  out << ": pos " << _pos << " hpr " << _hpr << " scale " << _scale;
}

/**
 * Tells the BamReader how to create objects of type AnimChannelMatrixFixed.
 */
void AnimChannelMatrixFixed::
register_with_read_factory() {
  BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
}

/**
 * Writes the contents of this object to the datagram for shipping out to a
 * Bam file.
 */
void AnimChannelMatrixFixed::
write_datagram(BamWriter *manager, Datagram &dg) {
  AnimChannel<ACMatrixSwitchType>::write_datagram(manager, dg);

  _pos.write_datagram(dg);
  _hpr.write_datagram(dg);
  _scale.write_datagram(dg);
}

/**
 * This function is called by the BamReader's factory when a new object of
 * type AnimChannelMatrixFixed is encountered in the Bam file.  It should
 * create the AnimChannelMatrixFixed and extract its information from the
 * file.
 */
TypedWritable *AnimChannelMatrixFixed::
make_from_bam(const FactoryParams &params) {
  AnimChannelMatrixFixed *chan = new AnimChannelMatrixFixed("", LVecBase3::zero(), LVecBase3::zero(), LVecBase3::zero());
  DatagramIterator scan;
  BamReader *manager;

  parse_params(params, scan, manager);
  chan->fillin(scan, manager);

  return chan;
}

/**
 * This internal function is called by make_from_bam to read in all of the
 * relevant data from the BamFile for the new AnimChannelMatrixFixed.
 */
void AnimChannelMatrixFixed::
fillin(DatagramIterator &scan, BamReader *manager) {
  AnimChannel<ACMatrixSwitchType>::fillin(scan, manager);

  _pos.read_datagram(scan);
  _hpr.read_datagram(scan);
  _scale.read_datagram(scan);
}