Turn Edges into Curve

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Oh my god, how dare SideFX?
So the Game-Dev team just went and built that tool? And in one of the videos Luiz even says, that he might change the tool defaults from “uv” to blank because “it might be useful for other places”..
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Another option is to put desired eges in a gorup > polypath > blast (pick group and check “Delete Non Selected”). For some reason the Gamedev edge group to curve node crashed on me.
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I wrote a sop tool that works like this.
Check this out: https://youtu.be/_0_ZnD-iusE [youtu.be]
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Tinkering with the dissolve tool there are a couple things to watch out for. It only works on boundary edges therefore you may need to delete the polygons beside the edge you want to extract - that is if you are trying to get edges or loops “inside” a topology. The second step would then be to select the boundry edges you want(either by hand or with a group) and then press delete (which creates a dissolve sop). On the Dissolve SOP, set Operation to Delete Non-Selected and then set Remove Inline points to OFF - this is especially important if you selected a loop because then ALL the points are inline points and you will see nothing. If you do these steps you should be OK:

Attachments:
dissolve_curve_extract.jpg (964.1 KB)
extract_curves_dissolve.hip (98.5 KB)

Robert Magee
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robsdesign
Not sure if this helps but I've found some of the tools useful…
https://www.sidefx.com/forum/topic/56685/ [www.sidefx.com]

The “GameDev Edge Group to Curve” sop might be useful for this…

I had also struggled with extracting an edge loop from a model and this worked perfectly. Thanks! It's now called “Labs Edge Group to Curve” since the “Game Dev” naming was dropped in H 18. The node's ability to “enable thickness” made me smile since it saved me having to set up a sweep.

With game dev/labs nodes, I usually close my eyes and hold my breath before seeing if I've crashed my project Most of the time, they work fine.
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99% of the time Polycut works fine to extract edges.


Just invert the group selection (!group).
Edited by PaQ WaK - Jan. 5, 2020 12:40:20
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rlvelocity
With game dev/labs nodes, I usually close my eyes and hold my breath before seeing if I've crashed my project Most of the time, they work fine.
Luiz Kruel
Senior Technical Artist
SideFX
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