From: Nathaniel Echols <nathaniel.echols@gm...>  20100325 21:51:11

Is there a way to do this in such a way that the rest of the view matrix changes appropriately, including clipping planes, etc.? There is a handy pair of functions in Coot that do this: set_rotation_centre(x, y, z) set_zoom(30) which has the advantage of adjusting the perspective and focusing on exactly the residue/molecule of interest. I tried to emulate the first part in PyMOL: def recenter_and_zoom (self, x, y, z) : view = list(cmd.get_view()) view[12] = x view[13] = y view[14] = z cmd.set_view(view) which sets the center of rotation, but the perspective is screwy because the rest of the view matrix is unchanged. I can figure out the equivalent 'zoom' command for the residue of interest if I really need to, but I already have the coordinates computed, so I'd rather try to figure out how to adjust the zoom level through the matrix instead. (Sorry if this is a little incoherent  I still don't understand matrix arithmetic in OpenGL.) thanks, Nat 