[Radiance-general] Two windows different directions Three Phase simulation

[Gregory J. Ward]

P.S.  Forgot to answer your final question.  You can place your receiver surface slightly in front of your window -- you are right that you don't want it in the same plane as another surface with a different material.  This would definitely mess things up.  You can re-use the same inward-facing surface as used for the view matrix receiver as a sender in the rfluxmtx command, and the material type will be ignored.  Having this surface a little inside the window will include the window in the daylight matrix.  If you want its influence in the view matrix, you can put your glow/light surface just outside the window, still with its surface normal facing into the room.  This would be appropriate if you wanted to use a BTDF for an exterior shading system, for example.