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shakingearthdigital
Participant
Feb 16, 2025 11:49 PM UTC
Question

Crazy path tangents

Hello, 

 

I feel like I'm missing something basic. I'm drawing a path on a super simple straight surface, and instead of being a straight path, it's bending all over the place. I tried toggling corner/smooth, which does *something*, but certainly doesn't make the path straight:

What is happening? How do I create a straight path? 

 

Substance 3D Painter, version 10.1.2
Build 4105 - 5ac1e5465eedb521dd6c13c1a61a8eca1ecc27d0

6 replies

carol_2691
Participant
May 8, 2025 8:34 PM UTC

I have this same issue,  was there ever a solution for this?   Check my screenshot, I have 2 points, but the line between them doesn't go between them correctly it doesnt align to the mesh surface

 

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shakingearthdigitalAuthor
Participant
May 8, 2025 8:51 PM UTC

No solution, they ignored my reply when I pointed out that their suggestion didn't work. 

 

As far as I can tell, it's due to the normals on the surface, so one thing you can try is to create a version of the geometry that has cusped normals, and use that to draw lines on. 

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Cyril Dellenbach
Community Manager
Cyril DellenbachCommunity Manager
Community Manager
Feb 17, 2025 1:53 PM UTC

Hello @shakingearthdigital,

 

Thank you for the message.

 

From your screenshot, it doesn't look like a perfectly straight surface (but I could be wrong). Our Path system doesn't work like it would in a 2D software and the vertices are really "attached" to the 3D surface. Therefore, a Path can look straight from a point of view, but the tangent is in fact curved.

 

 

 I advise you to deactivate the custom tangent (the pink handles) and keep the "Corner" mode active.

 

Best regards,

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Cyril Dellenbach (Micro) | Product Manager | Substance Painter
shakingearthdigitalAuthor
Participant
Feb 17, 2025 2:15 PM UTC

Hi Cyril, 

 

thanks for the reply. I'm not using custom tangents. The pink handles are from the 'Display' option. Turning that off doesn't change anything. 

 

I'm attaching a video, which hopefully demonstrates the issue better. Corner mode just doesn't seem to work. 

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