132 lines
3.4 KiB
C++
132 lines
3.4 KiB
C++
/* -*-c++-*-
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*
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* Copyright (C) 2006-2007 Mathias Froehlich
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include <simgear_config.h>
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#endif
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#include <osgDB/Registry>
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#include <osgDB/Input>
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#include <osgDB/Output>
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#include "SGTranslateTransform.hxx"
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SGTranslateTransform::SGTranslateTransform() :
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_axis(0, 0, 0),
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_value(0)
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{
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setReferenceFrame(RELATIVE_RF);
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}
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SGTranslateTransform::SGTranslateTransform(const SGTranslateTransform& trans,
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const osg::CopyOp& copyop) :
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osg::Transform(trans, copyop),
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_axis(trans._axis),
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_value(trans._value)
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{
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}
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bool
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SGTranslateTransform::computeLocalToWorldMatrix(osg::Matrix& matrix,
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osg::NodeVisitor* nv) const
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{
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if (_referenceFrame == RELATIVE_RF) {
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matrix.preMultTranslate((_value*_axis).osg());
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} else {
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matrix.setTrans((_value*_axis).osg());
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}
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return true;
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}
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bool
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SGTranslateTransform::computeWorldToLocalMatrix(osg::Matrix& matrix,
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osg::NodeVisitor* nv) const
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{
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if (_referenceFrame == RELATIVE_RF) {
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matrix.postMultTranslate((-_value*_axis).osg());
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} else {
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matrix.setTrans((-_value*_axis).osg());
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}
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return true;
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}
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osg::BoundingSphere
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SGTranslateTransform::computeBound() const
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{
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osg::BoundingSphere bs = osg::Group::computeBound();
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bs._center += _axis.osg()*_value;
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return bs;
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}
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namespace {
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bool TranslateTransform_readLocalData(osg::Object& obj, osgDB::Input& fr)
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{
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SGTranslateTransform& trans = static_cast<SGTranslateTransform&>(obj);
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if (fr[0].matchWord("axis")) {
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++fr;
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SGVec3d axis;
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if (fr.readSequence(axis.osg()))
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fr += 3;
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else
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return false;
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trans.setAxis(axis);
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}
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if (fr[0].matchWord("value")) {
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++fr;
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double value;
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if (fr[0].getFloat(value))
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++fr;
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else
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return false;
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trans.setValue(value);
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}
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return true;
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}
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bool TranslateTransform_writeLocalData(const osg::Object& obj,
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osgDB::Output& fw)
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{
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const SGTranslateTransform& trans
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= static_cast<const SGTranslateTransform&>(obj);
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const SGVec3d& axis = trans.getAxis();
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double value = trans.getValue();
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fw.indent() << "axis ";
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for (int i = 0; i < 3; i++)
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fw << axis(i) << " ";
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fw << std::endl;
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fw.indent() << "value " << value << std::endl;
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return true;
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}
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}
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osgDB::RegisterDotOsgWrapperProxy g_SGTranslateTransformProxy
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(
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new SGTranslateTransform,
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"SGTranslateTransform",
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"Object Node Transform SGTranslateTransform Group",
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&TranslateTransform_readLocalData,
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&TranslateTransform_writeLocalData
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);
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