void LLCamera::calculateWorldFrustumPlanes()
{
F32 d;
LLVector3 center = mOrigin - mXAxis*mNearPlane;
mWorldPlanePos = center;
for (int p=0; p<4; p++)
{
LLVector3 pnorm = LLVector3(mLocalPlanes[p]);
LLVector3 norm = rotateToAbsolute(pnorm);
norm.normVec();
d = -(center * norm);
mWorldPlanes[p] = LLPlane(norm, d);
}
// horizontal planes, perpindicular to (0,0,1);
LLVector3 zaxis(0, 0, 1.0f);
F32 yaw = getYaw();
{
LLVector3 tnorm = LLVector3(mLocalPlanes[PLANE_LEFT]);
tnorm.rotVec(yaw, zaxis);
d = -(mOrigin * tnorm);
mHorizPlanes[HORIZ_PLANE_LEFT] = LLPlane(tnorm, d);
}
{
LLVector3 tnorm = LLVector3(mLocalPlanes[PLANE_RIGHT]);
tnorm.rotVec(yaw, zaxis);
d = -(mOrigin * tnorm);
mHorizPlanes[HORIZ_PLANE_RIGHT] = LLPlane(tnorm, d);
}
}
LLVector4 LLCoordFrame::transformToAbsolute(const LLVector4 &local_vector) const
{
LLVector4 absolute_vector;
absolute_vector = rotateToAbsolute(local_vector);
absolute_vector.mV[VX] += mOrigin.mV[VX];
absolute_vector.mV[VY] += mOrigin.mV[VY];
absolute_vector.mV[VZ] += mOrigin.mV[VZ];
return absolute_vector;
}
LLVector3 LLCoordFrame::transformToAbsolute(const LLVector3 &local_vector) const
{
return (rotateToAbsolute(local_vector) + mOrigin);
}