You can also render your images using PovRay with transparent  

backgroung as a setting

Paul

Le 17 déc. 07 à 18:43, Greg Couch a écrit :

On Fri, 14 Dec 2007, Abbas wrote:

Hi,

One feature I really appreciated about chimera was the ability to

make pictures without a background, however recently i realized this

is not possible anymore I checked out under the effects dialog under

tools>viewing controls and it give me an error saying this wasn't

supported. I haven't changed my computer since i first started using

chimera I have updated to the latest version of chimera available for

OSX 10.4, I wonder if this is the cause of the problem.

I would really like to have pictures without backgrounds like I used

to, I know PyMol lets you do it, but I dislike this program. In any

case I would greatly appreciate any help/pointers on this issue.

Thanks in advance. abbas.

Transparent backgrounds depend on the graphics card capabilities  

reported

by OpenGL.  On Mac OS X, Apple decided not to support background

transparency (nor full window antialiasing) for OpenGL/X11  

applications,

so to use that feature you would have to use the Aqua version of  

chimera.

Unfortunately, the chimera's cross-platform user interface toolkit,  

Tk,

while improving for Aqua, has gotton worse for chimera, so you'll  

have to

use an old version of chimera for Aqua to get transparent backgrounds.

You can also file a bug report with Apple to help them decide to spend

the time to fix it (OpenGL "destination alpha" and multisampling not

supported in X11).

  Greg Couch

  UCSF Computer Graphics Lab

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