id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
1501	"VR drag: Cannot multiply Place times ""None"""	chimerax-bug-report@…	Tom Goddard	"{{{
The following bug report has been submitted:
Platform:        Windows-10-10.0.17134
ChimeraX Version: 0.8 (2018-11-26)
Description
(Describe the actions that caused this problem to occur here)

Log:
UCSF ChimeraX version: 0.8 (2018-11-26)  
How to cite UCSF ChimeraX  

> open ""C:\Users\Jacobson Lab\Desktop\Aligned\session1.cxs"" format session

opened ChimeraX session  

> vr on

started SteamVR rendering  

> meeting start

Meeting at vive or 169.230.21.39 port 52194  
Connection accepted from 169.230.21.70 port 54896  

> vr on

Traceback (most recent call last):  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\core\triggerset.py"", line 126, in invoke  
return self._func(self._name, data)  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\vive\vr.py"", line 447, in next_frame  
self.process_controller_events()  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\vive\vr.py"", line 476, in process_controller_events  
self.process_controller_motion()  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\vive\vr.py"", line 497, in process_controller_motion  
hc.process_motion(self)  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\vive\vr.py"", line 1133, in process_motion  
m.drag(camera, self, previous_pose, pose)  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\vive\vr.py"", line 1178, in drag  
camera.move_scene(move)  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\vive\vr.py"", line 373, in move_scene  
hc.update_scene_position(self)  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\vive\vr.py"", line 1010, in update_scene_position  
self.position = camera.room_to_scene * self.room_position *
scale(camera.scene_scale)  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\core\geometry\place.py"", line 117, in __mul__  
raise TypeError('Cannot multiply Place times ""%s""' % str(p))  
TypeError: Cannot multiply Place times ""None""  
  
Error processing trigger ""new frame"": Cannot multiply Place times ""None"":  
TypeError: Cannot multiply Place times ""None""  
  
File ""C:\Program Files\ChimeraX-Nov-27-2018\bin\lib\site-
packages\chimerax\core\geometry\place.py"", line 117, in __mul__  
raise TypeError('Cannot multiply Place times ""%s""' % str(p))  
  
See log for complete Python traceback.  
  




OpenGL version: 3.3.0 NVIDIA 391.58
OpenGL renderer: Quadro P6000/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation

}}}
"	defect	closed	normal		VR		fixed						all	ChimeraX