[SOLVED] Wierd Camera View~

I got a wierd camera view when I update the Newton world by calling update myself.

Here's my code:


/*Update the Newton world*/
m_World->update(evt.timeSinceLastFrame);

/*Setting the camera's position and direction*/
Vector3 pos;
Ogre::Quaternion ori;
body->getPositionOrientation(pos,ori);

camPos.x = pos.x + radius*cos(...
camPos.z = pos.z + radius*cos(...
camPos.y = pos.y + radius*sin(...

mCamNode ->setPosition(camPos);
Cam->lookAt(Vector3(pos.x,pos.y+2,pos.z));

/*Setting the body has the same direction with camera*/
Ogre::Quaternion dir = Cam->getOrientation();
dir.x=0;
dir.z=0;
body->setPositionOrientation(pos,dir);




I made the camera move around the body , and the character's body face the same way as camera.

Just like the usual 3rd person view game.

It's normal when camera stay just behind the body , rotating is all works just fine.

But when my camera on the top of my body , the wierd view shows up.

When camera at the back-upside of the body , and rotating to some direction.

The view just deformed like the video here:

http://www.chu.edu.tw/~b09402209/OgreNewt.avi

I've checked the position of camera , the body and camera's distance is the same as the camera behind body.

Don't know if this cause by OgreNewt.

But the status shows up after I update Newton world myself.

Hope somebody can give me some advice , or help.

Thanks for the reading .

Oh , the camera can worked just fine when I update the newton world after setting camera's position like this:


/*Setting the camera's position and direction*/
Vector3 pos;
Ogre::Quaternion ori;
body->getPositionOrientation(pos,ori);

camPos.x = pos.x + radius*cos(...
camPos.z = pos.z + radius*cos(...
camPos.y = pos.y + radius*sin(...

mCamNode ->setPosition(camPos);
Cam->lookAt(Vector3(pos.x,pos.y+2,pos.z));

/*Update the Newton world*/
m_World->update(evt.timeSinceLastFrame);

/*Setting the body has the same direction with camera*/
Ogre::Quaternion dir = Cam->getOrientation();
dir.x=0;
dir.z=0;
body->setPositionOrientation(pos,dir);

/*Setting the camera's position and direction second times*/
Vector3 pos;
Ogre::Quaternion ori;
body->getPositionOrientation(pos,ori);

camPos.x = pos.x + radius*cos(...
camPos.z = pos.z + radius*cos(...
camPos.y = pos.y + radius*sin(...

mCamNode ->setPosition(camPos);
Cam->lookAt(Vector3(pos.x,pos.y+2,pos.z));



Set twice for the camera's position to avoid the body shiver cause by the camera.

But in this case , when I rotate my character speedy .

The body just can't rotate as soon as camera.

So.. still can't fix this...

Any advice are welcome.

Thanks for the reading.

Anyone?

Maybe it's my problem not clearly enough.

Any question or advice?

Solved!!

The Qri should normalized before set for the body.

The camera's view worked perfect now!