459 lines
13 KiB
C++
459 lines
13 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osgSim/DOFTransform>
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using namespace osgSim;
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using namespace osg;
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static const unsigned int TRANSLATION_X_LIMIT_BIT = 0x80000000u >> 0;
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static const unsigned int TRANSLATION_Y_LIMIT_BIT = 0x80000000u >> 1;
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static const unsigned int TRANSLATION_Z_LIMIT_BIT = 0x80000000u >> 2;
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static const unsigned int ROTATION_PITCH_LIMIT_BIT = 0x80000000u >> 3;
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static const unsigned int ROTATION_ROLL_LIMIT_BIT = 0x80000000u >> 4;
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static const unsigned int ROTATION_YAW_LIMIT_BIT = 0x80000000u >> 5;
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static const unsigned int SCALE_X_LIMIT_BIT = 0x80000000u >> 6;
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static const unsigned int SCALE_Y_LIMIT_BIT = 0x80000000u >> 7;
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static const unsigned int SCALE_Z_LIMIT_BIT = 0x80000000u >> 8;
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DOFTransform::DOFTransform():
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_previousTraversalNumber(-1),
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_previousTime(0.0),
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_limitationFlags(0),
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_animationOn(true),
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_increasingFlags(0xffff)
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{
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setNumChildrenRequiringUpdateTraversal(1);
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}
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DOFTransform::DOFTransform(const DOFTransform& dof, const osg::CopyOp& copyop):
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osg::Transform(dof, copyop),
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_previousTraversalNumber(dof._previousTraversalNumber),
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_previousTime(dof._previousTime),
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_minHPR(dof._minHPR),
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_maxHPR(dof._maxHPR),
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_currentHPR(dof._currentHPR),
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_incrementHPR(dof._incrementHPR),
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_minTranslate(dof._minTranslate),
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_maxTranslate(dof._maxTranslate),
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_currentTranslate(dof._currentTranslate),
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_incrementTranslate(dof._incrementTranslate),
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_minScale(dof._minScale),
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_maxScale(dof._maxScale),
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_currentScale(dof._currentScale),
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_incrementScale(dof._incrementScale),
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_Put(dof._Put),
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_inversePut(dof._inversePut),
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_limitationFlags(dof._limitationFlags),
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_animationOn(dof._animationOn),
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_increasingFlags(dof._increasingFlags)
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{
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setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()+1);
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}
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void DOFTransform::traverse(osg::NodeVisitor& nv)
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{
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if (nv.getVisitorType()==osg::NodeVisitor::UPDATE_VISITOR)
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{
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// ensure that we do not operate on this node more than
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// once during this traversal. This is an issue since node
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// can be shared between multiple parents.
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if ((nv.getTraversalNumber()!=_previousTraversalNumber) && nv.getFrameStamp())
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{
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double newTime = nv.getFrameStamp()->getReferenceTime();
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animate((float)(newTime-_previousTime));
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_previousTraversalNumber = nv.getTraversalNumber();
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_previousTime = newTime;
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}
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}
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Transform::traverse(nv);
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}
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bool DOFTransform::computeLocalToWorldMatrix(osg::Matrix& matrix,osg::NodeVisitor*) const
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{
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//put the PUT matrix first:
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osg::Matrix l2w(getPutMatrix());
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//now the current matrix:
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osg::Matrix current;
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current.makeTranslate(getCurrentTranslate());
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//now create the local rotation:
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current.preMult(osg::Matrix::rotate(getCurrentHPR()[1], 1.0, 0.0, 0.0));//pitch
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current.preMult(osg::Matrix::rotate(getCurrentHPR()[2], 0.0, 1.0, 0.0));//roll
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current.preMult(osg::Matrix::rotate(getCurrentHPR()[0], 0.0, 0.0, 1.0));//heading
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//and scale:
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current.preMult(osg::Matrix::scale(getCurrentScale()));
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l2w.postMult(current);
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//and impose inverse put:
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l2w.postMult(getInversePutMatrix());
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// finally.
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if (_referenceFrame==RELATIVE_TO_PARENTS)
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{
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matrix.preMult(l2w);
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}
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else
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{
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matrix = l2w;
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}
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return true;
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}
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bool DOFTransform::computeWorldToLocalMatrix(osg::Matrix& matrix,osg::NodeVisitor*) const
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{
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//put the PUT matrix first:
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osg::Matrix w2l(getInversePutMatrix());
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//now the current matrix:
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osg::Matrix current;
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current.makeTranslate(-getCurrentTranslate());
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//now create the local rotation:
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current.postMult(osg::Matrix::rotate(-getCurrentHPR()[0], 0.0, 0.0, 1.0));//heading
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current.postMult(osg::Matrix::rotate(-getCurrentHPR()[2], 0.0, 1.0, 0.0));//roll
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current.postMult(osg::Matrix::rotate(-getCurrentHPR()[1], 1.0, 0.0, 0.0));//pitch
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//and scale:
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current.postMult(osg::Matrix::scale(1./getCurrentScale()[0], 1./getCurrentScale()[1], 1./getCurrentScale()[2]));
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w2l.postMult(current);
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//and impose inverse put:
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w2l.postMult(getPutMatrix());
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if (_referenceFrame==RELATIVE_TO_PARENTS)
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{
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//finally:
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matrix.postMult(w2l);
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}
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else // absolute
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{
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matrix = w2l;
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}
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return true;
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}
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void DOFTransform::updateCurrentHPR(const osg::Vec3& hpr)
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{
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//if there is constrain on animation
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if (_limitationFlags & ROTATION_ROLL_LIMIT_BIT)
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{
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//if we have min == max, it is efective constrain, so don't change
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if(_minHPR[2] != _maxHPR[2])
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{
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_currentHPR[2] = hpr[2];
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unsigned short this_flag = (unsigned short)1<<4;//roll
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if(_currentHPR[2] < _minHPR[2])
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{
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_currentHPR[2] = _minHPR[2];
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//force increasing flag to 1
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_increasingFlags |= this_flag;
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}
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else if(_currentHPR[2] > _maxHPR[2])
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{
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_currentHPR[2] = _maxHPR[2];
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//force increasing flag to 0
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentHPR[2] = hpr[2];
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}
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if (_limitationFlags & ROTATION_PITCH_LIMIT_BIT)
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{
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if(_minHPR[1] != _maxHPR[1])
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{
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_currentHPR[1] = hpr[1];
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unsigned short this_flag = (unsigned short)1<<3;//pitch
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if(_currentHPR[1] < _minHPR[1])
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{
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_currentHPR[1] = _minHPR[1];
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_increasingFlags |= this_flag;
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}
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else if(_currentHPR[1] > _maxHPR[1])
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{
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_currentHPR[1] = _maxHPR[1];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentHPR[1] = hpr[1];
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}
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if (_limitationFlags & ROTATION_YAW_LIMIT_BIT)
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{
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if(_minHPR[0] != _maxHPR[0])
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{
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_currentHPR[0] = hpr[0];
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unsigned short this_flag = (unsigned short)1<<5;//heading
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if(_currentHPR[0] < _minHPR[0])
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{
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_currentHPR[0] = _minHPR[0];
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_increasingFlags |= this_flag;
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}
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else if(_currentHPR[0] > _maxHPR[0])
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{
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_currentHPR[0] = _maxHPR[0];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentHPR[0] = hpr[0];
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}
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dirtyBound();
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}
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void DOFTransform::updateCurrentTranslate(const osg::Vec3& translate)
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{
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if (_limitationFlags & TRANSLATION_Z_LIMIT_BIT)
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{
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if(_minTranslate[2] != _maxTranslate[2])
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{
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_currentTranslate[2] = translate[2];
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unsigned short this_flag = (unsigned short)1<<2;
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if(_currentTranslate[2] < _minTranslate[2])
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{
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_currentTranslate[2] = _minTranslate[2];
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_increasingFlags |= this_flag;
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}
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else if(_currentTranslate[2] > _maxTranslate[2])
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{
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_currentTranslate[2] = _maxTranslate[2];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentTranslate[2] = translate[2];
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}
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if (_limitationFlags & TRANSLATION_Y_LIMIT_BIT)
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{
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if(_minTranslate[1] != _maxTranslate[1])
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{
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_currentTranslate[1] = translate[1];
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unsigned short this_flag = (unsigned short)1<<1;
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if(_currentTranslate[1] < _minTranslate[1])
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{
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_currentTranslate[1] = _minTranslate[1];
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_increasingFlags |= this_flag;
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}
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else if(_currentTranslate[1] > _maxTranslate[1])
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{
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_currentTranslate[1] = _maxTranslate[1];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentTranslate[1] = translate[1];
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}
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if (_limitationFlags & TRANSLATION_X_LIMIT_BIT)
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{
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if(_minTranslate[0] != _maxTranslate[0])
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{
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_currentTranslate[0] = translate[0];
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unsigned short this_flag = (unsigned short)1;
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if(_currentTranslate[0] < _minTranslate[0])
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{
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_currentTranslate[0] = _minTranslate[0];
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_increasingFlags |= this_flag;
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}
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else if(_currentTranslate[0] > _maxTranslate[0])
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{
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_currentTranslate[0] = _maxTranslate[0];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentTranslate[0] = translate[0];
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}
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dirtyBound();
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}
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void DOFTransform::updateCurrentScale(const osg::Vec3& scale)
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{
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if (_limitationFlags & SCALE_Z_LIMIT_BIT)
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{
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if(_minScale[2] != _maxScale[2])
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{
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_currentScale[2] = scale[2];
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unsigned short this_flag = (unsigned short)1<<8;
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if(_currentScale[2] < _minScale[2])
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{
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_currentScale[2] = _minScale[2];
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_increasingFlags |= this_flag;
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}
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else if(_currentScale[2] > _maxScale[2])
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{
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_currentScale[2] = _maxScale[2];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentScale[2] = scale[2];
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}
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if (_limitationFlags & SCALE_Y_LIMIT_BIT)
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{
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if(_minScale[1] != _maxScale[1])
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{
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_currentScale[1] = scale[1];
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unsigned short this_flag = (unsigned short)1<<7;
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if(_currentScale[1] < _minScale[1])
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{
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_currentScale[1] = _minScale[1];
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_increasingFlags |= this_flag;
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}
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else if(_currentScale[1] > _maxScale[1])
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{
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_currentScale[1] = _maxScale[1];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentScale[1] = scale[1];
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}
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if (_limitationFlags & SCALE_X_LIMIT_BIT)
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{
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if(_minScale[0] != _maxScale[0])
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{
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_currentScale[0] = scale[0];
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unsigned short this_flag = (unsigned short)1<<6;
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if(_currentScale[0] < _minScale[0])
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{
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_currentScale[0] = _minScale[0];
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_increasingFlags |= this_flag;
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}
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else if(_currentScale[0] > _maxScale[0])
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{
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_currentScale[0] = _maxScale[0];
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_increasingFlags &= ~this_flag;
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}
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}
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}
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else
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{
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_currentScale[0] = scale[0];
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}
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dirtyBound();
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}
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void DOFTransform::animate(float deltaTime)
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{
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if(!_animationOn) return;
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//this will increment or decrement all allowed values
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osg::Vec3 new_value = _currentTranslate;
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if(_increasingFlags & 1)
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new_value[0] += _incrementTranslate[0]*deltaTime;
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else
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new_value[0] -= _incrementTranslate[0]*deltaTime;
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if(_increasingFlags & 1<<1)
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new_value[1] += _incrementTranslate[1]*deltaTime;
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else
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new_value[1] -= _incrementTranslate[1]*deltaTime;
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if(_increasingFlags & 1<<2)
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new_value[2] += _incrementTranslate[2]*deltaTime;
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else
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new_value[2] -= _incrementTranslate[2]*deltaTime;
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updateCurrentTranslate(new_value);
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new_value = _currentHPR;
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if(_increasingFlags & ((unsigned short)1<<3))
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new_value[1] += _incrementHPR[1]*deltaTime;
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else
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new_value[1] -= _incrementHPR[1]*deltaTime;
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if(_increasingFlags & ((unsigned short)1<<4))
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new_value[2] += _incrementHPR[2]*deltaTime;
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else
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new_value[2] -= _incrementHPR[2]*deltaTime;
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if(_increasingFlags & ((unsigned short)1<<5))
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new_value[0] += _incrementHPR[0]*deltaTime;
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else
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new_value[0] -= _incrementHPR[0]*deltaTime;
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updateCurrentHPR(new_value);
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new_value = _currentScale;
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if(_increasingFlags & 1<<6)
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new_value[0] += _incrementScale[0]*deltaTime;
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else
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new_value[0] -= _incrementScale[0]*deltaTime;
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if(_increasingFlags & 1<<7)
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new_value[1] += _incrementScale[1]*deltaTime;
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else
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new_value[1] -= _incrementScale[1]*deltaTime;
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if(_increasingFlags & 1<<8)
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new_value[2] += _incrementScale[2]*deltaTime;
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else
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new_value[2] -= _incrementScale[2]*deltaTime;
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updateCurrentScale(new_value);
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}
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