LLCamera LLSpatialBridge::transformCamera(LLCamera& camera)
{
LLCamera ret = camera;
LLXformMatrix* mat = mDrawable->getXform();
LLVector3 center = LLVector3(0,0,0) * mat->getWorldMatrix();
LLQuaternion rotation = LLQuaternion(mat->getWorldMatrix());
LLVector3 delta = ret.getOrigin() - center;
LLQuaternion rot = ~mat->getRotation();
delta *= rot;
LLVector3 lookAt = ret.getAtAxis();
LLVector3 up_axis = ret.getUpAxis();
LLVector3 left_axis = ret.getLeftAxis();
lookAt *= rot;
up_axis *= rot;
left_axis *= rot;
if (!delta.isFinite())
{
delta.clearVec();
}
ret.setOrigin(delta);
ret.setAxes(lookAt, left_axis, up_axis);
return ret;
}
void LLSpatialBridge::updateSpatialExtents()
{
LLSpatialGroup* root = (LLSpatialGroup*) mOctree->getListener(0);
{
LLFastTimer ftm(LLFastTimer::FTM_CULL_REBOUND);
root->rebound();
}
LLXformMatrix* mat = mDrawable->getXform();
LLVector3 offset = root->mBounds[0];
LLVector3 size = root->mBounds[1];
LLVector3 center = LLVector3(0,0,0) * mat->getWorldMatrix();
LLQuaternion rotation = LLQuaternion(mat->getWorldMatrix());
offset *= rotation;
center += offset;
LLVector3 v[4];
//get 4 corners of bounding box
v[0] = (size * rotation);
v[1] = (LLVector3(-size.mV[0], -size.mV[1], size.mV[2]) * rotation);
v[2] = (LLVector3(size.mV[0], -size.mV[1], -size.mV[2]) * rotation);
v[3] = (LLVector3(-size.mV[0], size.mV[1], -size.mV[2]) * rotation);
LLVector3& newMin = mExtents[0];
LLVector3& newMax = mExtents[1];
newMin = newMax = center;
for (U32 i = 0; i < 4; i++)
{
for (U32 j = 0; j < 3; j++)
{
F32 delta = fabsf(v[i].mV[j]);
F32 min = center.mV[j] - delta;
F32 max = center.mV[j] + delta;
if (min < newMin.mV[j])
{
newMin.mV[j] = min;
}
if (max > newMax.mV[j])
{
newMax.mV[j] = max;
}
}
}
LLVector3 diagonal = newMax - newMin;
mRadius = diagonal.magVec() * 0.5f;
mPositionGroup.setVec((newMin + newMax) * 0.5f);
updateBinRadius();
}
LLCamera LLSpatialBridge::transformCamera(LLCamera& camera)
{
LLCamera ret = camera;
LLXformMatrix* mat = mDrawable->getXform();
const LLVector4a& center = mat->getWorldMatrix().getRow<3>();
LLQuaternion2 invRot;
invRot.setConjugate( LLQuaternion2(mat->getRotation()) );
LLVector4a delta;
delta.load3(ret.getOrigin().mV);
delta.sub(center);
LLVector4a lookAt;
lookAt.load3(ret.getAtAxis().mV);
LLVector4a up_axis;
up_axis.load3(ret.getUpAxis().mV);
LLVector4a left_axis;
left_axis.load3(ret.getLeftAxis().mV);
delta.setRotated(invRot, delta);
lookAt.setRotated(invRot, lookAt);
up_axis.setRotated(invRot, up_axis);
left_axis.setRotated(invRot, left_axis);
if (!delta.isFinite3())
{
delta.clear();
}
ret.setOrigin(LLVector3(delta.getF32ptr()));
ret.setAxes(LLVector3(lookAt.getF32ptr()), LLVector3(left_axis.getF32ptr()), LLVector3(up_axis.getF32ptr()));
return ret;
}