Thomas de Groot nous apporta ses lumieres en ce 02/05/2006 02:41:
> "Kyle" <hob### [at] gatenet> schreef in bericht
> news:ev3d525uhl58kg8ckme3vvns1q4ng0fh8g@4ax.com...
> 
>>Hi Sven.
>>
>>A common practice is to use #declare and #if statements in your scene to
> 
> control the rendering of
> 
>>certain objects or groups of objects.  For example, you may declare
> 
> something like this at the top
> 
>>of your scene:
>>
>>#declare draw_sphere true;
>>
>>Then have an #if statement in your scene to control rendering of the
> 
> object:
> 
>>#if ( draw_sphere )
>>  ... code for the sphere goes here ...
>>#end
>>
>>I often use this technique to control detailed vs. simple textures also.
>>
>>
> 
> 
> I was going to suggest the same thing!!! My scenes generally start with a
> whole array of such switches, turning objects on or off. Combined with the
> selection rectangle, testing is easy. I do not feel the need of a lasso,
> frankly.
> 
> Thomas
> 
> 
Also, rendering an irregular shaped area could ultimately be slower than a slightly to
large area. 
This will be due to a substentialy more complex code. The code for a simple square
section is 
simple: you limit the region to render. That for an arbitrary free-hand capture will
need to test 
every pixel against the desired area. You may also need to render, but not display, in
a, square, 
region larger than the selected area.

-- 
Alain
-------------------------------------------------
File not found. Should I fake it? (Y/N)

Post a reply to this message