[Bf-committers] Re: Ipo keyframe speedup

[erwin at erwincoumans.com]

Just curious, what do you mean by BVH ?
I assume you don't mean Bounding Volume Hierarchy (which is the common 
meaning for BVH) ? 

Thanks,
Erwin 


Campbell Barton writes: 

> Hi, I was looking at speeding up BVH import and the bottleneck is adding 
> keyframes. 
> 
> In further hunting  it seems that calchandles_ipocurve is running on all 
> curves everytime a keyframe is added, even if the handels arnt being used. 
> (constant or a linear curves) 
> 
> 
> So I modified Line 450 or ipo.c to only loop over bezier types.
> void calchandles_ipocurve(IpoCurve *icu)
> {
>    BezTriple *bezt, *prev, *next;
>    int a; 
> 
>    a= icu->totvert;
>    // was       if(a<2) return;
>    if(a<2 || icu->ipo==IPO_LIN || icu->ipo==IPO_CONST) return; /* 
> IPO_CONST or IPO_LIN, no handels */ 
> 
> 
> Importing a the BVH 1956 framses long went for 86.2 seconds to 13.3sec 
> with this change.
> Since changing this may mess up other areas of Blender, I was wondering of 
> sombody else could look into this change.
> - Cam 
> 
> -- 
> Campbell J Barton 
> 
> 133 Hope Street
> Geelong West, Victoria 3218 Australia 
> 
> URL:    http://www.metavr.com
> e-mail: cbarton at metavr.com
> phone: AU (03) 5229 0241
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