Forums Houdini Indie and Apprentice how to get the profile of a section cutting through geometry

how to get the profile of a section cutting through geometry

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oat
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shown below, I do like to get the profile of the section cutting through 3 overlapping boxes.

May I ask how to do this?

I can use the cookie node to get the shape of the section cutting through the boxes, but it is composed of 3 separate polygons and I can't find a way to merge them into one shape …

thanks in advance!

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Screen Shot 2012-11-04 at 2.57.23 PM.png (57.0 KB)
Screen Shot 2012-11-04 at 2.57.34 PM.png (108.9 KB)
Screen Shot 2012-11-04 at 2.57.34 PM 2.png (77.4 KB)
outline.hipnc (49.0 KB)

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oat
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I'm not sure if there's a sound solution to what I intend to do here.

Anyway, can I suggest the Houdini development team to consider this function as a new tool or an option added to the slice node?

- Ji
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pinkwerks
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Cookie working fine here.

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cookie.jpg (96.3 KB)
cookie.hip (67.9 KB)

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oat
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Hi, pinkwerks, thanks!

I understand that cookie and clip nodes work fine here. My intention is to isolate the profile shape of the section automatically without manually picking all the edges constituting the profile.

- J
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pinkwerks
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Oh sorry, was confused by your pictures. You can do this easy.

Add a fuse sop to the end of the chain.

Then use a divide sop with ‘remove shared edges’.

Or perhaps, group geometry sop, set ‘entity’ to ‘edges’ and on the edges tab - check unshared edges. Be sure to uncheck ‘enable’ on the Number tab.

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cookie2.hip (74.5 KB)

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oat
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thank you very much, pinkwerks! learn a new trick!

… the only pity is that we need to use multiple cookie nodes, two geometry at a time, to union all the separate parts to make this work…

a “master” geometry as a result of merging all the individual geometry doesn't respond to the method you suggested.

- J
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