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Is there anyway to get the pen pressures 0.0 - 1.0 as an input in Geometry Nodes? Can’t find a way to do it yet.

As I want to let user draw 3D line similar to grease pencil. I use curve to draw as well but it’s not be able to capture those pressure sensitivity during each stroke.

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    $\begingroup$ Such feature is currently not available. However you could use pen pressure in Weight Paint or Color Paint mode and you can use the resulted weight / color information instead of the pen pressure. Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. $\endgroup$ Oct 20, 2023 at 19:10
  • $\begingroup$ Thank you @RumenBelev I’ve update my question to be more specific and more clear. $\endgroup$
    – VrTech
    Oct 21, 2023 at 4:25

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To draw a Curve with the radius affected by the pen pressure - activate Use Pressure for the Draw Tool:

enter image description here

When you add a Geometry Node to that Curve it transfers the Curve Radius and you can simply use Curve To Mesh node to see the effect:

enter image description here

To control the Curve Radius you can use the Radius and Set Curve Radius nodes plus Math or Float Curve nodes between them:

enter image description here

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  • $\begingroup$ Let me try this, I think this might be able to capture those pen inputs this way. $\endgroup$
    – VrTech
    Oct 23, 2023 at 3:28

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