This script seems to be incredibly slow (3.6.2). Why is that? Any tips 
on speeding up renders?


Mike

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Le 03/06/2010 11:19, SharkD a écrit :
> This script seems to be incredibly slow (3.6.2). Why is that? Any tips
> on speeding up renders?

You mean slow to parse or to render ?
If "Render", it's normal.
To perform the bending, the bent object is duplicated a lot of time
inside a CSG.
So, if the basic object is already slow... it can only get worst.

For instance, a sphere is quick... a superellipsoid is a bit slow... any
complex CSG with slow object is even more slow.

Also, given the higher number of end-objects, you might be running into
the swap... which is always bad.

Alternative approach: convert to mesh, deform the mesh and render... but
that's cheating.



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On 6/3/2010 8:28 AM, Le_Forgeron wrote:
> Le 03/06/2010 11:19, SharkD a écrit :
>> This script seems to be incredibly slow (3.6.2). Why is that? Any tips
>> on speeding up renders?
>
> You mean slow to parse or to render ?
> If "Render", it's normal.
> To perform the bending, the bent object is duplicated a lot of time
> inside a CSG.
> So, if the basic object is already slow... it can only get worst.
>
> For instance, a sphere is quick... a superellipsoid is a bit slow... any
> complex CSG with slow object is even more slow.
>
> Also, given the higher number of end-objects, you might be running into
> the swap... which is always bad.
>
> Alternative approach: convert to mesh, deform the mesh and render... but
> that's cheating.
>
>
>


Yes, I meant while rendering, sorry! I'm trying to use Object Blender in 
conjunction with CityGen to create a city that is wrapped inside a 
cylinder. Normally, the scene renders in about 5-10mins, but when using 
the bent macro I think it rendered one line every hour! (1024x512px)

This is way too slow, so an alternative (and probably better) option 
would be to rewrite CityGen to create buildings in the appropriate 
shapes and dimensions (i.e. with sloping sides).

But this is also a lot of work, so I decided to "fake" everything and am 
instead just using thin strips of normally proportioned buildings and am 
rotating them around the z-axis so that their placement corresponds to a 
cylinder. Hopefully the result is sufficiently convincing.


Mike

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On 6/4/2010 4:52 AM, SharkD wrote:
> Yes, I meant while rendering, sorry! I'm trying to use Object Blender in
> conjunction with CityGen to create a city that is wrapped inside a
> cylinder. Normally, the scene renders in about 5-10mins, but when using
> the bent macro I think it rendered one line every hour! (1024x512px)
>
> This is way too slow, so an alternative (and probably better) option
> would be to rewrite CityGen to create buildings in the appropriate
> shapes and dimensions (i.e. with sloping sides).
>
> But this is also a lot of work, so I decided to "fake" everything and am
> instead just using thin strips of normally proportioned buildings and am
> rotating them around the z-axis so that their placement corresponds to a
> cylinder. Hopefully the result is sufficiently convincing.
>
>
> Mike

It also ate up all my RAM!


-- 
http://isometricland.com

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