Lens shift in BGE

[Deleted user]

Hi,
After successful 'BLAM'ing an using object using a data projector the object shifts in game mode. This appears to be due to the lens shift not working in game engine. I tried the code here:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Game_Engine/Camera
(correcting the "shitfy" typo) and it didn't help.
I'm using blender 2.72b

[Stef777]

The script in the wiki doesn't work in the current blender but works in older blender.

Have a look at this thread:
http://blenderartists.org/forum/showthread.php?255148-BGE-camera-lens-shift-broken

I've tested the blend you'll find there (which is based on the wiki code you mentionned). It fails in 2.72b but works at least in 2.60a. I haven't tried other versions yet.

[Stef777]

I've found the problem ! It works in 2.72a now.

Follow these steps :

1. First of all, in the script which is on the wiki you must replace shiftx or shifty by a number.
2. Then you must change the code like that :
   camatrix[2][0] becomes camatrix [0] [2]
   camatrix[2][1] becomes camatrix [1] (2]
   You have to do that to make it work because the way matrices are indexed changed in 2.62 (instead of [column] [row] now it's [row] [column]...).

I advise you to still download the blend in the thread I mentionned in my first post. The script is slightly more sophisticated and interesting (it allows you to set the shiftx and shifty value by pressing the arrow keys). Don't forget to change the code as told in step 2.

[Deleted user]

Thanks Steff777! That worked like a charm!