VMD-L Mailing List

From: Oliver Grant (olivercgrant_at_gmail.com)
Date: Fri Oct 19 2018 - 10:07:41 CDT

Thanks John, that fixed it.
Best,
Oliver

On Fri, Oct 19, 2018 at 3:37 PM John Stone <johns_at_ks.uiuc.edu> wrote:

> Hi,
> You don't want to use "-mediumshade" when you run Tachyon,
> as that flag explicitly disables AO... Just delete that flag
> from your Tachyon command line and I would expect things to work
> normally. If not, let me know and we'll figure it out.
>
> Best,
> John Stone
> vmd_at_ks.uiuc.edu
>
> On Fri, Oct 19, 2018 at 01:04:37PM +0200, Oliver Grant wrote:
> > Hi all,
> > I'm using the glowlights.tcl script from John Stone in VMD 1.9.3. I
> first
> > render a scene (vmdscene.dat) using tachyon. The tga produced looks
> good.
> > I then add glowlights like this:
> > ::GlowLights::new_light { -44 59 5 } white { 0.6 0 0 } 10
> >
> > ::GlowLights::render_scene vmdscene.dat vmdscene_glow.tga
> >
> >  But the vmdscene_glow.tga only contains light from the glowlight.
> The
> > ambient light from tachyon is missing. I also tried:
> >
> > ::GlowLights::append_to_scene vmdscene.dat
> >
> > followed by this on the command line:
> >
> > $VMDPATH/lib/tachyon/tachyon_LINUXAMD64 -aasamples 16 -trans_vmd
> > -mediumshade -format TARGA vmdscene.dat -o vmdscene_glow1.tga
> >
> > But this still only had the glowlights, and so the rest of the image
> is
> > very dark.Â
> > Q: Is this a bug on my machine or is this expected behaviour for what
> I'm
> > doing? If expected, what can I do to have both ambient lighting and
> > glowlights rendered?
> > Best,
> > Oliver
>
> --
> NIH Center for Macromolecular Modeling and Bioinformatics
> Beckman Institute for Advanced Science and Technology
> University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
> http://www.ks.uiuc.edu/~johns/ Phone: 217-244-3349
> http://www.ks.uiuc.edu/Research/vmd/
>