'Return current position of camera based on center, dist, elevation, and azimuth'

def cameraPosition(self):

    center = self.opts['center']
    dist = self.opts['distance']
    elev = ((self.opts['elevation'] * np.pi) / 180.0)
    azim = ((self.opts['azimuth'] * np.pi) / 180.0)
    pos = Vector((center.x() + ((dist * np.cos(elev)) * np.cos(azim))), (center.y() + ((dist * np.cos(elev)) * np.sin(azim))), (center.z() + (dist * np.sin(elev))))
    return pos
