What do you mean by "rotating the PAT instead of the model"? Does it
look like it is rotating around the origin?
To me the code looks right. I'm using it with Open Dynamics Engine and
the way I use PAT looks identical. I would get rid of all the casts
and debug it to see what is really happening.
-Gazi
On 24/04/07, Michael Bosse' <[EMAIL PROTECTED]> wrote:
Hello. I am currently working on an implementation of a physics viewer
application that utilizes openscenegraph and Ageia PhysX (to control the
bodies in the simulation). So far my implementation is as follows. The root
node is a group node. I load my model graphic file up and attach it to a
position attitude transform node which I then attach to the root node. For
every step of the physics simulation, I get a position vector and a quad
from PhysX which I then apply to the PAT. The issue that I am experiencing
is that it appears that when I attempt to update both position and rotation
the models do not act properly. It is almost as if I am rotating the PAT
instead of the model.
Here is a simple example of what I am doing:
//standard calls to viewer. members
//Update physics simulation update
(inside render loop)
NxActor** PhysicsActors = gPhysicsScene->getActors();
NxVec3 PhyPos;
NxQuat PhyRot;
PhyPos = (PhysicsActors[1])->getGlobalPosition();
PhyRot =
(PhysicsActors[1])->getGlobalOrientationQuat();
osg::Node* GraphicsActor = gRoot->getChild(0); //In this example, only
rotate the first object..
dynamic_cast<osg::PositionAttitudeTransform*>(GraphicsActor)->setPosition(osg::Vec3d(
PhyPos.x, PhyPos.y, PhyPos.z));
osg::Quat GraphRot;
GraphRot.set( static_cast<osg::Quat::value_type>(
PhyRot.x), static_cast<osg::Quat::value_type>(PhyRot.y),
static_cast<osg::Quat::value_type>(PhyRot.z),
static_cast<osg::Quat::value_type>(PhyRot.w));
dynamic_cast<osg::PositionAttitudeTransform*>(GraphicsActor)->setAttitude(
GraphRot);
(end of render loop)
If anyone is familiar with both of these systems, and wouldn't mind
explaining what I am doing wrong, I would be very grateful.
Mike Bosse'
--
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body, with the ignorances of the mind, with the passions of the body, with
the seditions of the city, with the discords of families." - Tacitus
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Tacitus
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