Usually used when allocating a zbuffer, usually float. 32 bit IEEE floating point, usually float or double. Any value less than or equal to 0.0 disables the far clip plane. The X Y and Z coordinates of the Camera in Worldspace. The rotation of the Camera in Worldpsace .
Pitch is the up-down rotation, with positive being up.
Pan is left-right rotation, with positive being right, and Roll is rotation around the viewing axis, with positive being clockwise. Or NULL, to disable Z-buffering. Usually from 0.0 to 1.0. Can be greater and brightness will be clipped. Either pointers to the children, or 0 if no children.