emulating vertical shift through a camera tag

On 17/08/2015 at 20:20, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   15+ 
Platform:   Windows  ;   
Language(s) :     C++  ;

I want to emulate vertical shift "Film Offset Y" in Camera.
the current problem in Cinema4D camera is: when a user adjust Film Offset Y, the camera view gets off, but the behavior in mind is re offset this camera view back to the original target "with a rotation compensation"

I can do the simple task of rotating the camera to compensate for the offset, but this won't be a good approach "due to animations, other tags that rely on camera matrix, children, etc..."

so any idea? may be draw the whole view from another camera, then put that new view into the tag draw? not sure how to do something like this.

On 21/08/2015 at 04:05, xxxxxxxx wrote:

in other words, the question:
how to draw another view using a tag?