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I think this will work…

Im not 100% sure how it works, but that is why I am learning right?


Thanks

I am sure this is is painfully simple, but I just can't figure out a reasonable way to do this in houdini. I've even tried hacking around in parameters but I can't find what I am looking for even though it looks like I am staring right at it.


What I have:

Geometry that I have brought in from another app.
It is sized in a particular way call it Ox, Oy, Oz. The aspect is correct, but the entire object needs to be uniformly scaled to match a certain height Ay without destroying the aspect of the x, y, z relationship.

The height of the incoming object is assumed to be random(ish), but we know what we want it to be. So I need to normalize it to some known value like 1 so that I can scale it to the proper size.

In houdini I can easily create a reference box with a known size, but if I use MatchSizeSOP I cant seem to find a way to only pass the “y” data, so if I feed it a 1x,1x1 box my model is horribly distorted. The various aspects of the imported object are assumed unknown, but correct before import.

I “could” use transformSOP or edit or whatever, but I can't seem to find a parameter to extract the Ox, Oy, Oz data from the geometry, instead I only seem to be able to get the point cloud data, for each fo the thousands of vertexes. So useless. I can use the BOunding Box SOP but still I can't exxtract a proper “height” “width” “depth” from it…. if I right click on it, i can see these numbers. but after hours of reading Houdini's tech support I can't find how to access that infor thru expression.



So in simple…. how is this done?

It has to be easy.

I think I fixed it. My normals were flipped on half of my model. FacetSOP was unable to resolve the discontinuity until I fixed that.

Thanks for the help.