The directional vector of the camera.
Tells if the output is a perspective camera.
The location of the camera.
The normalized rmax value of the camera.
This is the value of the intersection
of the right plane of the view frustum with the near plane.
The bottom right point Pbr is equal to :
Pbr = umin * uvector + rmax * rvector + dvector.
rmax = rmax_cur / dmin.
The normalized rmin value of the camera (usually equal to -rmax).
This is the value of the intersection
of the left plane of the view frustum with the near plane.
The top left point Ptl is equal to :
Ptl = umax * uvector + rmin * rvector + dvector.
rmax = rmax_cur / dmin.
The right vector of the camera.
The front vector of the scene.
The up vector of the scene.
The normalized umax value of the camera.
This is the value of the intersection
of the up plane of the view frustum with the near plane.
The top right point Ptr is equal to :
Ptr = umax * uvector + rmax * rvector + dvector.
umax = umax_cur / dmin.
The normalized umin value of the camera (usually equal to -umax).
This is the value of the intersection
of the bottom plane of the view frustum with the near plane.
The bottom left point Pbl is equal to :
Pbl = umin * uvector + rmin * rvector + dvector.
umin = umin_cur / dmin.
The up vector of the camera.
The representation of an export camera parameters to be used in export2D / exportSVG.