I really like Oleg's compound. Result of it in a per point context and its fast
Challenge: Make the fastest island selection compound
Re: Challenge: Make the fastest island selection compound
Where can this compound be found? The speed looks great, I'd love to try it out.iamVFX wrote:I really like Oleg's compound. Result of it in a per point context and its fast
Re: Challenge: Make the fastest island selection compound
Here, the fifth post, but you have already tested it, didn't you?Chris_TC wrote:Where can this compound be found? The speed looks great, I'd love to try it out.
Re: Challenge: Make the fastest island selection compound
Oh sorry, yes of course I have. I thought this was a different one.
Re: Challenge: Make the fastest island selection compound
some compounds here I made recently, work reasonably fast, based of Guillaume's method, but simplified
#1: "Initialize Island Lookups"
#2: "Get Island Locations": per point, fetches array of locations of all island points for subsequent attribute lookups, requires Compound 1 executed
Don't know how much this is already covered in this thread, just needed some quick search&paste place to post this in
#1: "Initialize Island Lookups"
#2: "Get Island Locations": per point, fetches array of locations of all island points for subsequent attribute lookups, requires Compound 1 executed
Don't know how much this is already covered in this thread, just needed some quick search&paste place to post this in
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softimage resources section updated Jan 5th 2024
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- Joined: 27 Apr 2010, 16:10
Re: Challenge: Make the fastest island selection compound
I never seemed to have any problems with Oleg's compound so I'm not sure this variant will work on other machines but in the attached scene I've used the same basic technique as Oleg (i.e. growing outwards from the initial vertices attached to the target poly) but tried to filter the search vertices so that you're not iterating over the same points. I set up a variant of the test scene with highly subdivided topology and my tree executes in about 1.75s and Oleg's in about 7.5s (on my machine).
http://www.exch.demon.co.uk/xsi/files/i ... nge_JJ.rar
Let me know if this a) works and b) if my timings are grossly wrong! On the surface it seems to do the job. The scene is 2013 SP1.
http://www.exch.demon.co.uk/xsi/files/i ... nge_JJ.rar
Let me know if this a) works and b) if my timings are grossly wrong! On the surface it seems to do the job. The scene is 2013 SP1.
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- Posts: 9
- Joined: 27 Apr 2010, 16:10
Re: Challenge: Make the fastest island selection compound
For completeness, just updated the scene to include a comparison of the two basic techniques a) iterating outwards as Oleg does and b) identifying all the polygon islands first and then deriving the island-to-be-actioned from the polygon index (similar to Reinhard's compounds above). The former is always about 30% quicker but the latter does give you the polygon island indices as a bonus.
http://www.exch.demon.co.uk/xsi/files/i ... island.rar
http://www.exch.demon.co.uk/xsi/files/i ... island.rar
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