Am 06.09.2012 17:33, schrieb Jaime Vives Piqueres:
> On 06/09/12 17:14, bugbear wrote:
>> At the moment, I'm just editing my file a lot, and I bounce from
>> "fast mode" to "slow mode".
>>
>> All tips and experiences (and/or links) welcomed.
>>
>
>    I usually resort to have a lot of variables at the top of the file to
> control all that, as for example:
>
> #declare use_radiosity=0;
> #declare use_area=0
> #declare use_focalblur=0;
>
>    ...and so on. Later, on the relevant code, I will use an if to use or
> not use the feature.

Same here.

If you only have a few different "modes" for your scene, you might want 
to consider declaring the respective variables via .ini files.

I for one tend to use quite a lot of different combinations; for one 
particularly complex scene, I moved the detail settings to a separate 
"config file" (so I don't have to scroll up & down the actual scene file 
each time I change some setting), which to date looks like this:

---------------------------
#declare Textures           = yes;
#declare AnimTestTextures   = no;

#declare QuickCylinderBlock = no;
#declare QuickBoilerAssy    = no; /* TODO */
   #declare QuickBoilerFairing = no; /* TODO */
#declare QuickChassis       = no;
   #declare QuickFrame         = no;
   #declare QuickSuspension    = no;
     #declare QuickSprings       = no;
     #declare QuickBearings      = no;
#declare QuickWheels        = no;
#declare QuickDriveRods     = no;
#declare QuickValveGear     = no;
#declare QuickCatwalk       = no;
#declare QuickRailings      = no;
#declare QuickPipework      = no;
   #declare QuickSanders       = no;

#declare QuickGeometry      = no;
#declare QuickBolts         = yes;
#declare QuickSky           = no;

#declare ShowCylinderBlock  = no;
#declare ShowBoilerAssy     = no;
   #declare ShowBoilerFairing  = no;
#declare ShowChassis        = yes;
   #declare ShowFrame          = yes;
   #declare ShowSuspension     = yes;
     #declare ShowSprings        = yes;
     #declare ShowBearings       = yes;
#declare ShowWheels         = no;
#declare ShowDriveRods      = yes;
#declare ShowValveGear      = yes;
#declare ShowCatwalk        = no;
#declare ShowRailings       = no;
#declare ShowSanders        = no;
#declare ShowPipework       = no;

#declare ShowBolts          = yes;

#if(frame_number)
   #declare DriverAngle        = frame_number*10;
   #declare DriverRevolutions  = 2; /* tweak pilot & trailer wheel 
angles for an animation loop of this many driver revolutions (0 = don't) */
#else
   #declare DriverAngle        = 0;
   #declare DriverRevolutions  = 0;
#end

#declare ReachRodSetting    = 0.3; /* 1 = full forward, -1 = full reverse */
---------------------------

"Textures" specifies whether I get the final textures; if set to "no", I 
get simple diffuse-only textures (using rather light color tones) to 
help me better judge the geometry (using different colors for the 
various major substructures of the object) - unless "AnimTestTextures" 
is on, in which case moving parts get textures with simple geometric 
patterns to help me judge the consistency of animation.

"Quick*" specifies for various major substructures of the object whether 
I get a low-quality variant (primarily turning off some beveling and the 
like), while "Show*" specifies whether I get to see the respective 
substructures at all.

Some of those "Quick*" and "Show*" settings work across all 
substructures, such as "QuickBolts" and "ShowBolts" which specifies the 
detail level of any bolts in the render, and "QuickGeometry" which is a 
master switch to set all substructures to low quality.

The remaining settings are used to control the position of movable parts.


Actually this is just the "config file" for the featured object in the 
scene. A few more settings affecting the entire scene, such as whether 
to activate radiosity or focal blur, where to place the camera and 
lights, etc., are defined elsewhere.

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