RE: [PyMOL] Upcoming Rendering Changes. Comments?

[<rsa...@an...>]

Hi Warren,

No objections to the proposed improvements, strong or otherwise. What would
be really helpful, though, is to include in the new release notes the
detailed description of how to go back to the old style. Something like what
you are writing in this e-mail but written AFTER things are already
implemented (my thinking is that some things may change between now and when
0.92 is out).
Cheers,
N.

Ruslan Sanishvili (Nukri), Ph.D.

GM/CA-CAT, Bld. 436, D007
Biosciences Division, ANL
9700 S. Cass Ave.
Argonne, IL 60439

Tel: (630)252-0665
Fax: (630)252-0667
rsa...@an...


> -----Original Message-----
> From: Warren L. DeLano [mailto:wa...@de...]
> Sent: Monday, August 04, 2003 2:14 PM
> To: pym...@li...
> Subject: [PyMOL] Upcoming Rendering Changes. Comments?
> 
> PyMOLer's
> 
> 	I've made some changes in the development version which I am
> considering for the next release.  However, they will affect existing
> scripts, so I am warning people now, and asking for objections (if there
> are any).
> 
> *** Subject 1:  Ray tracing of lines, dots, mesh, dash, isomesh, ribbon,
> and nonbonded representations.
> 
> Currently, when you "ray", you have to manually adjust the radius of
> these objects for optimum quality.  I propose that in version 0.92, that
> PyMOL will do this automatically to match the OpenGL image, unless you
> explicitly specify otherwise
> 
> THIS WILL CHANGE THE OUTPUT OF EXISTING SCRIPTS, but it will be much
> easier for users going forward.  PyMOL raytracing will be more WYSIWYG
> -- what you see in OpenGL will be closer to what you get when you ray
> trace.
> 
> Prior behavior can be restored by setting the radii explicitly to their
> original values.
> 
> *** Subject 2:  Antialiased rendering
> 
> The next version of PyMOL will default to a different antialiasing
> algorithm.
> 
> In the past, we're used blanket 2X over-sampling of the complete image.
> The next version will focus that extra rendering energy where it counts:
> on the edges of objects.  This turn out to be so much faster that I plan
> to make it the default (antialias=1).  In most cases, image quality will
> improve and rendering times will improve by about 1 to 4-fold for
> antialiased images!.
> 
> Blanket 2X, 3X, and 4X oversampling will still be possible using
> antialias=2, 3, or 4.
> 
> Prior behavior can be restored by changing two settings
> (ray_oversample_cutoff->0 and antialias->0 or 2).
> 
> If you have strong objections to these changes, please speak up.
> 
> Cheers,
> Warren
> 
> 
> --
> mailto:wa...@de...
> Warren L. DeLano, Ph.D.
> Principal Scientist
> DeLano Scientific LLC
> Voice (650)-346-1154
> Fax   (650)-593-4020
> 
> 
> 
> 
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