# Custom Glyph orientation after Transform causes unexpected lighting behavior

**URL:** https://discourse.paraview.org/t/custom-glyph-orientation-after-transform-causes-unexpected-lighting-behavior/17670
**Category:** ParaView Support
**Created:** [August 3, 2026, 2:47pm UTC](https://discourse.paraview.org/t/custom-glyph-orientation-after-transform-causes-unexpected-lighting-behavior/17670 "2026-08-03T14:47:46Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![pfahd](https://discourse.paraview.org/user_avatar/discourse.paraview.org/pfahd/32/17942_2.png) [@pfahd](https://discourse.paraview.org/u/pfahd)
#### Post date: [August 25, 2026, 12:18pm UTC](https://discourse.paraview.org/t/custom-glyph-orientation-after-transform-causes-unexpected-lighting-behavior/17670/7 "2026-08-25T12:18:42Z")

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Thank you! it worked 🙂.  
I found this post also helpful [ParaView vs Tecplot Gouraud shading](https://discourse.paraview.org/t/paraview-vs-tecplot-gouraud-shading/3511).

p.s: at the same time, I have noticed this transform is not required if I use ‘Flat’ as interpolation. Problem was with ‘Gouraud’ - does that make sense?

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