Is there a way to do per point morphing in Houdini using the Blend SOP

[magneto]

Hi,

I checked Blend Shapes SOP and Sequence Blend SOP but they don't seem to allow having a per-point interpolation for the blend amount.

Is there a way to do this in Houdini? I know this is easy to do in VOPs but are there no built-in SOPs for this? If so, that's really surprising.

Thanks

[edward]

The best way today is probably a Point Wrangle SOP.

[edward]

PS. Local variables are slow, which is why I wouldn't recommend using the Point SOP anymore if you care about speed.

[magneto]

Thanks alot Edward. I ended up doing it in VOPs

But is overriding VOP parameters with point attributes slow too?

Also you recommend Point Wrangle SOP over VOPSOP? They are identical in speed, right?

[Guest mantragora]

Also you recommend Point Wrangle SOP over VOPSOP? They are identical in speed, right?

Dive inside PointWrangle, what nodes you see there?

[edward]

But is overriding VOP parameters with point attributes slow too?

Not really. It's slower than if you didn't override of course, but a lot faster than if you needed to evaluate local variables. The other reason for VEX/VOPs of course is that the Point SOP is not multi-threaded.

[magneto]

Thanks guys. Btw is it more advisable to import the attribute into VOPSOP, or PointWrangle instead of overriding it? I imagine they have different mechanisms for each.