Bugs item #636052, was opened at 2002-11-09 18:42
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105988&aid=636052&group_id=5988
Category: Context
Group: OpenGLContext v1.0
>Status: Pending
>Resolution: Invalid
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Mike C. Fletcher (mcfletch)
Summary: rotations around center
Initial Comment:
transform.py
Transform class
transform method
rotation needs to come above center and transform for rotations around center to work as intended.
def transform( self ):
''' Perform the actual alteration of the current matrix '''
if self.rotation:
apply(glRotatef, self.rotation )
----------------------------------------------------------------------
>Comment By: Mike C. Fletcher (mcfletch)
Date: 2002-11-16 03:53
Message:
Logged In: YES
user_id=34901
I've examined the code, and it really does appear to do what
I intended (which is to mimic the VRML97 model). Rotation
is done about the centre (as is scaling). To do that AFAIK,
you need to have the centre-translate active before you do
the rotation and scaling.
I'm pretty sure it's right as-is (I've done a _lot_ of work
on VRML Transform coding over the years). An explanation of
_why_ you think it should work some other way would be helpful.
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105988&aid=636052&group_id=5988
|
