Return current position of camera based on center, dist, elevation, and azimuth
Orbits the camera around the center position. azim and elev are given in degrees.
viewport specifies the arguments to glViewport. If None, then we use self.opts[‘viewport’] region specifies the sub-region of self.opts[‘viewport’] that should be rendered. Note that we may use viewport != self.opts[‘viewport’] when exporting.
Moves the center (look-at) position while holding the camera in place.
If relative=True, then the coordinates are interpreted such that x if in the global xy plane and points to the right side of the view, y is in the global xy plane and orthogonal to x, and z points in the global z direction. Distances are scaled roughly such that a value of 1.0 moves by one pixel on screen.
Return the approximate size of a screen pixel at the location pos Pos may be a Vector or an (N,3) array of locations
Read the current buffer pixels out as a QImage.