"ZainAnak" <nomail@nomail> wrote in message 
news:web.42dd81fa9c9b6ebd3b6b98ba0@news.povray.org...
> I'm not too sure how to use the command line args
> correctly, as when I hit "go" it finishes in 0.4 sec and nothing is
> generated.  Anyway, a step-by-step would be much *very* appreciated.

Okay, happy to try.

I posted the script with it set to render the final image, so be sure you 
change it to CreateImage=yes; first. I expected the comments to make sense, 
probably wasn't a good idea to start it out in reverse with the hope it 
would be changed right away.

Those lines with the //cmd: can be right-clicked and the popup menu will 
show a selection for adding it to the command-line field of the toolbar so 
you don't need to type it in. The first such line sets the output image 
format to PNG uses a path and filename expected to be one of the POV-Ray 
library paths. The folder "renderings" is one I use for all output; however, 
yours could be anywhere else you usually output the renders to.
Just make sure it is also a library path or in the current scene file 
folder, otherwise it won't be found later. Library_Path= can be added to 
your povray.ini via the Tools menu, select 'Edit master POVRAY.INI', and 
look at the end of that text file (folder must already exist!). Close and 
Save the file. You will need to close and run POV again to reset things if 
you choose to do this.

Okay, with that much out of the way you should be able to get a rendered 
example scene if you left it in the script (didn't replace it with your own 
yet). Of course, you could replace that scene (comment it out or delete the 
lines) and either copy and paste your entire scene into it (probably not 
wise for a large file) or collect it all into one or more #include files 
then just add them that way.
Since includes are easier to manage I'll tell more about that.

#if (CreateImage=yes)

#include "yourscene.pov"

#end

is how it would look at its simplist. My example scene with the crackle 
textured sphere has lights and camera within that if/end section but it 
would need to be removed for your own to go there. For now you might want to 
give it a look as is first to be sure it works right.

Next, after rendering that image, you will need to change the command-line. 
So right-click the second //cmd: line in the header comments and select that 
to replace the command-line field with it. Render that way and you should 
see the resulting light-bleed image. Again, be sure you use a path (or none 
to render to default location) and filename you want. As long as the first 
time render has a matching file name that is under the " begin 
light-bleeding part" you should be ok, the second render could be anything.

If this doesn't help completely yet just ask more about it.

Two other things I should mention is image resolution and the 2/3 index 
values of the pigment_map. You're image size for the first rendering will 
probably need to be larger than the second in order to prevent lowering the 
quality. Also, I didn't set this up for anything more than a simple 4:3 
ratio and the scale would need to be adjusted if another ratio is used. 
Likewise, a camera with the proper aspect ratio will be needed. As it is now 
there is no camera defined since it uses a default one at <0,0,0> with 
default parameters.

Maybe you can at least get started on it knowing all this.

Bob Hughes

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