/*!
Rotates the node around its local origin relative to the space expressed by 'relativeTo'.
*/
void SLNode::rotate(const SLQuat4f& rot, SLTransformSpace relativeTo)
{
SLQuat4f norm = rot.normalized();
SLMat4f rotation = rot.toMat4();
if (relativeTo == TS_object)
{
_om *= rotation;
}
else if (_parent && relativeTo == TS_world)
{
SLMat4f rot;
rot.translate(updateAndGetWM().translation());
rot.multiply(rotation);
rot.translate(-updateAndGetWM().translation());
_om = _parent->_wm.inverse() * rot * updateAndGetWM();
}
else // relativeTo == TS_Parent || relativeTo == TS_World && !_parent
{
SLMat4f rot;
rot.translate(translation());
rot.multiply(rotation);
rot.translate(-translation());
_om.setMatrix(rot * _om);
}
needUpdate();
}
/*!
sets the rotation of this node. The axis parameter
will be transformed into 'relativeTo' space. So an passing in an axis
of (0, 1, 0) with TS_Object will rotate the node around its own up axis.
*/
void SLNode::rotation(const SLQuat4f& rot,
SLTransformSpace relativeTo)
{
SLMat4f rotation = rot.toMat4();
if (_parent && relativeTo == TS_world)
{
// get the inverse parent rotation to remove it from our current rotation
// we want the input quaternion to absolutely set our new rotation relative
// to the world axes
SLMat4f parentRotInv = _parent->updateAndGetWMI();
parentRotInv.translation(0, 0, 0);
// set the om rotation to the inverse of the parents rotation to achieve a
// 0, 0, 0 relative rotation in world space
_om.rotation(0, 0, 0, 0);
_om *= parentRotInv;
needUpdate();
rotate(rot, relativeTo);
}
else if (relativeTo == TS_parent)
{ // relative to parent, reset current rotation and just rotate again
_om.rotation(0, 0, 0, 0);
needUpdate();
rotate(rot, relativeTo);
}
else
{
// in TS_Object everything is relative to our current orientation
_om.rotation(0, 0, 0, 0);
_om *= rotation;
needUpdate();
}
}
/*!
set a rotation for this node
*/
void SLBoneNode::rotation(SLQuat4f& rot)
{
_globalTransform = _poseTransform;
_transform = _poseTransform;
SLMat4f rotation = rot.toMat4();
_transform *= rotation;
}
/*!
Applies the view transform to the modelview matrix depending on the eye:
eye=-1 for left, eye=1 for right
*/
void SLCamera::setView(SLSceneView* sv, const SLEye eye)
{
SLScene* s = SLScene::current;
SLMat4f vm = updateAndGetWMI();
if (eye == centerEye)
{ _stateGL->modelViewMatrix.identity();
_stateGL->viewMatrix.setMatrix(vm);
}
else // stereo viewing
{
if (_projection == stereoSideBySideD)
{
// half interpupilar disqtance
//_eyeSeparation = s->oculus()->interpupillaryDistance(); update old rift code
SLfloat halfIPD = (SLfloat)eye * _eyeSeparation * -0.5f;
SLMat4f trackingPos;
if (_useDeviceRot)
{
// get the oculus or mobile device orientation
SLQuat4f rotation;
if (s->oculus()->isConnected())
{
rotation = s->oculus()->orientation(eye);
trackingPos.translate(-s->oculus()->position(eye));
}
else rotation = sv->deviceRotation();
SLfloat rotX, rotY, rotZ;
rotation.toMat4().toEulerAnglesZYX(rotZ, rotY, rotX);
//SL_LOG("rotx : %3.1f, roty: %3.1f, rotz: %3.1f\n", rotX*SL_RAD2DEG, rotY*SL_RAD2DEG, rotZ*SL_RAD2DEG);
SLVec3f viewAdjust = s->oculus()->viewAdjust(eye) * _unitScaling;
SLMat4f vmEye(SLMat4f(viewAdjust.x, viewAdjust.y, viewAdjust.z) * rotation.inverted().toMat4() * trackingPos * vm);
_stateGL->modelViewMatrix = vmEye;
_stateGL->viewMatrix = vmEye;
}
else
{
SLMat4f vmEye(SLMat4f(halfIPD, 0.0f, 0.f) * vm);
_stateGL->modelViewMatrix = vmEye;
_stateGL->viewMatrix = vmEye;
}
}
else
{
// Get central camera vectors eye, lookAt, lookUp out of the view matrix vm
SLVec3f EYE, LA, LU, LR;
vm.lookAt(&EYE, &LA, &LU, &LR);
// Shorten LR to half of the eye dist (eye=-1 for left, eye=1 for right)
LR *= _eyeSeparation * 0.5f * (SLfloat)eye;
// Set the OpenGL view matrix for the left eye
SLMat4f vmEye;
vmEye.lookAt(EYE+LR, EYE + _focalDist*LA+LR, LU);
_stateGL->modelViewMatrix = vmEye;
_stateGL->viewMatrix = vmEye;
}
}
}