Johan Feyaerts nous apporta ses lumieres en ce 21/08/2006 05:50:
> Hi,
> 
> Due to the bad weather in Belgium I found some time to work further on the 
> website buttons macro I started some time ago.
> The macro can render now a set of buttons for a website using pov animation 
> (and a few days of patience on 512*384)
> 
> By the way: is there any way to change the name of the bmp output file in 
> the during rendering? output is now produced by the animation in 
> webbuttons00.bmp,webbuttons01.bmp etc. It would be more convenient for later 
> use of render output if I could name them something like button_<text inside 
> button>_blue_normalstate.bmp.
> 
> There is 2 versions pressed state with lights shining & normal  both 
> rendered with +-14 lights behind the text. Problem is that they take a long 
> time to render. Is there any way to speed up rendering with this amount of 
> lights.
> I tried one version with radiosity with an emitting text behind the black 
> text, but I'm not really happy with the result. The way the light shines on 
> the side of the button seems unnatural to me. I like the backlight inside 
> the button though.
> I don't know enough of radiosity I to find out how to improve it. Any 
> suggestions would be appreciated.
> Radiosity settings are :
> 
> global_settings {
>       max_trace_level 100
>       assumed_gamma 1.25
>       #if (Radiosity)
>         radiosity {
>               pretrace_start 0.04           // start pretrace at this size
>               pretrace_end   0.002          // end pretrace at this size
You can try 0.00125 or 000625, but try other settings first.
>               count  250                      // higher -> higher quality 
> (1..1600) [35]
Need to increase still more. Go for 600 to 1000.
>               nearest_count  10               // higher -> higher quality 
> (1..10) [5]
This one can go up to 20, worth a try
>               error_bound 2               // higher -> smoother, less 
> accurate [1.8]
>               recursion_limit 3             // how much interreflections are 
> calculated (1..5+) [3]
Try 1 or 2 as you way not need 3 interreflections
>               low_error_factor .5           // reduce error_bound during 
> last pretrace step
Lowering this may help
>               gray_threshold 0.0            // increase for weakening colors 
> (0..1) [0]
>               minimum_reuse 0.015           // reuse of old radiosity 
> samples [0.015]
You can try increasing this one by a SMALL value. Use steps no more than 0.001.
If increasing don't give better results, try smaller values, same step size.
>               brightness 0.4                 // brightness of radiosity 
> effects (0..1) [1]
> 
>               adc_bailout 0.01/2
You may need to reduce some more.
>               //normal on                   // take surface normals into 
> account [off]
>               //media on                    // take media into account [off]
>               //save_file "file_name"       // save radiosity data
>               //load_file "file_name"       // load saved radiosity data
>               //always_sample off           // turn sampling in final trace 
> off [on]
>               //max_sample 1.0              // maximum brightness of samples
>          }
> 
>       #else
> 
> 
> 


-- 
Alain
-------------------------------------------------
Unitarianism: Come let us reason together about this shit.

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