Generate hair by using vertex groups as a guide

Question

I have tried to guide the hair using vertex groups, even using weight paint, but it does not help.

I use the new hair system in Blender 4.0 on Windows 11.

Is it possible to use vertex groups to place hair curves at the desired location, as in the image?

Here is my file

Hatrutsu -FKA KiskaArt- · Accepted Answer · 2024-03-09 10:42:47Z

1

To add hair to a painted area, use the "Generate Hair Curves" node.

Edit the node: Add a vertex group attribute and use a Boolean math node with the Not operation attached to the Delete Geometry node.

answered Mar 9 at 10:42

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$\begingroup$ I already do as you asked but I get this result instead drive.google.com/file/d/1YXj3bfbbBLVRERnZvDasIfjumW5p1SVS/… $\endgroup$
– erasvinzz
Commented Mar 9 at 13:03
$\begingroup$ @erasvinzz Do you use empty hair for the modifiers? I attached a file with my answer, you can copy the hair system from there. $\endgroup$
– Hatrutsu -FKA KiskaArt-
Commented Mar 9 at 13:07
$\begingroup$ no I didn't I just use modifier generate hair curve... Should I use empty hair for this to work? $\endgroup$
– erasvinzz
Commented Mar 9 at 13:07
$\begingroup$ It appears that you have applied a modifier to an object (suzanne), so it will delete geometry that is not related to the curves. $\endgroup$
– Hatrutsu -FKA KiskaArt-
Commented Mar 9 at 13:10
$\begingroup$ Yes, I use hair system modifier"Generate Hair Curve" $\endgroup$
– erasvinzz
Commented Mar 9 at 13:13

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