82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
// Filename: stTransform.cxx
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// Created by: drose (06Oct10)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) Carnegie Mellon University. All rights reserved.
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//
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// All use of this software is subject to the terms of the revised BSD
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// license. You should have received a copy of this license along
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// with this source code in a file named "LICENSE."
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//
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////////////////////////////////////////////////////////////////////
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#include "stTransform.h"
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STTransform STTransform::_ident_mat;
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////////////////////////////////////////////////////////////////////
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// Function: STTransform::Constructor
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// Access: Published
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// Description: This constructor accepts a Panda TransformState, for
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// instance as extracted from the scene graph.
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////////////////////////////////////////////////////////////////////
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STTransform::
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STTransform(const TransformState *trans) {
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#ifndef NDEBUG
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// Ensure these are initialized to reasonable values in case we fail
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// an assertion below.
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_pos.set(0.0f, 0.0f, 0.0f);
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_rotate = 0.0f;
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_scale = 1.0f;
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#endif
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nassertv(trans->has_components());
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_pos = trans->get_pos();
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const LVecBase3 &hpr = trans->get_hpr();
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nassertv(IS_NEARLY_ZERO(hpr[1]) && IS_NEARLY_ZERO(hpr[2]));
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_rotate = hpr[0];
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nassertv(trans->has_uniform_scale());
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_scale = trans->get_uniform_scale();
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}
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////////////////////////////////////////////////////////////////////
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// Function: STTransform::output
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// Access: Published
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// Description:
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////////////////////////////////////////////////////////////////////
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void STTransform::
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output(ostream &out) const {
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out << "STTransform(" << _pos << ", " << _rotate << ", " << _scale << ")";
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}
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////////////////////////////////////////////////////////////////////
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// Function: STTransform::write_datagram
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// Access: Public
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// Description: Writes the contents of this object to the datagram
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// for shipping out to a Bam file.
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////////////////////////////////////////////////////////////////////
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void STTransform::
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write_datagram(BamWriter *manager, Datagram &dg) {
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_pos.write_datagram(dg);
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dg.add_stdfloat(_rotate);
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dg.add_stdfloat(_scale);
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}
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////////////////////////////////////////////////////////////////////
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// Function: STTransform::fillin
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// Access: Public
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// Description: This internal function is called by make_from_bam to
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// read in all of the relevant data from the BamFile for
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// the new SpeedTreeNode.
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////////////////////////////////////////////////////////////////////
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void STTransform::
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fillin(DatagramIterator &scan, BamReader *manager) {
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_pos.read_datagram(scan);
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_rotate = scan.get_stdfloat();
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_scale = scan.get_stdfloat();
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}
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