Hi Nick,
I'm not sure my scenario is like mine but hope this code snippet may help:
Code:
void setViewTowardsXMinus()
{
nodeTrackerManipulator->setTransformation(computeEye(osg::Vec3d(nodeTrackerManipulator->getDistance(),
0.0, 0.0)), osg::Vec3d(0.0, 0.0, 0.0),
nodeTrackerManipulator->getHomeUpPosition());
}
void setViewTowardsXPlus()
{
nodeTrackerManipulator->setTransformation(computeEye(osg::Vec3d(-nodeTrackerManipulator->getDistance(),
0.0, 0.0)), osg::Vec3d(0.0, 0.0, 0.0),
nodeTrackerManipulator->getHomeUpPosition());
}
void setViewTowardsYMinus()
{
nodeTrackerManipulator->setTransformation(computeEye(osg::Vec3d(0.0,
nodeTrackerManipulator->getDistance(), 0.0)), osg::Vec3d(0.0, 0.0, 0.0),
nodeTrackerManipulator->getHomeUpPosition());
}
void setViewTowardsYPlus()
{
nodeTrackerManipulator->setTransformation(computeEye(osg::Vec3d(0.0,
-nodeTrackerManipulator->getDistance(), 0.0)), osg::Vec3d(0.0, 0.0, 0.0),
nodeTrackerManipulator->getHomeUpPosition());
}
void setViewTowardsZMinus()
{
nodeTrackerManipulator->setTransformation(computeEye(osg::Vec3d(0.0, 0.0,
nodeTrackerManipulator->getDistance())), osg::Vec3d(0.0, 0.0, 0.0),
nodeTrackerManipulator->getHomeUpPosition());
}
void setViewTowardsZPlus()
{
nodeTrackerManipulator->setTransformation(computeEye(osg::Vec3(0.0f, 0.0f,
-nodeTrackerManipulator->getDistance())), osg::Vec3d(0.0, 0.0, 0.0),
nodeTrackerManipulator->getHomeUpPosition());
}
osg::Vec3d computeEye(const osg::Vec3d& iEye)
{
osg::Vec3d eye = iEye;
...
double psi, theta, phi;
graphicObject->getInitialRotation(psi, theta, phi);
osg::Quat initAttitude = viosg::quatFromBody313(psi, theta, phi);
eye = initAttitude * graphicObject->getTransformNode()->getAttitude() * eye;
return eye;
}
Cheers,
Gianni
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=71564#71564
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