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Added the support in AnimationPathCallback for taking a pivot, axis and rotation rate

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paramters in its constructor to allow it to be used to create rotations around a point.
This provides the same interface and functionality as osgUtil::TransformCallback but
has the advantage and AnimationPathCallback is fully supported by the .osg and .ive file formats.
This commit is contained in:
Robert Osfield
2005-11-09 15:11:22 +00:00
parent ac0a6a6ac5
commit 83d492162e
13 changed files with 48 additions and 23 deletions
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32
src/osg/AnimationPath.cpp
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@@ -115,6 +115,38 @@ void AnimationPath::write(std::ostream& fout) const
fout.precision(prec);
}
AnimationPathCallback::AnimationPathCallback(const osg::Vec3d& pivot,const osg::Vec3d& axis,float angularVelocity):
_pivotPoint(pivot),
_useInverseMatrix(false),
_timeOffset(0.0),
_timeMultiplier(1.0),
_firstTime(DBL_MAX),
_latestTime(0.0),
_pause(false),
_pauseTime(0.0)
{
_animationPath = new AnimationPath;
_animationPath->setLoopMode(osg::AnimationPath::LOOP);
double time0 = 0.0;
double time1 = osg::PI*0.5/angularVelocity;
double time2 = osg::PI*1.0/angularVelocity;
double time3 = osg::PI*1.5/angularVelocity;
double time4 = osg::PI*2.0/angularVelocity;
osg::Quat rotation0(0.0, axis);
osg::Quat rotation1(osg::PI*0.5, axis);
osg::Quat rotation2(osg::PI*1.0, axis);
osg::Quat rotation3(osg::PI*1.5, axis);
_animationPath->insert(time0,osg::AnimationPath::ControlPoint(pivot,rotation0));
_animationPath->insert(time1,osg::AnimationPath::ControlPoint(pivot,rotation1));
_animationPath->insert(time2,osg::AnimationPath::ControlPoint(pivot,rotation2));
_animationPath->insert(time3,osg::AnimationPath::ControlPoint(pivot,rotation3));
_animationPath->insert(time4,osg::AnimationPath::ControlPoint(pivot,rotation0));
}
class AnimationPathCallbackVisitor : public NodeVisitor
{
public: