# How to describe a surface with an inner hole？

**URL:** <https://forum.techsoft3d.com/t/how-to-describe-a-surface-with-an-inner-hole/4383>\
**Category:** HOOPS Visualize Web\
**Tags:** how-to\
**Created:** [February 13, 2025, 5:25am UTC](https://forum.techsoft3d.com/t/how-to-describe-a-surface-with-an-inner-hole/4383 "2025-02-13T05:25:40Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![820110017](https://avatars.discourse-cdn.com/v4/letter/8/bc79bd/32.png) [@820110017](https://forum.techsoft3d.com/u/820110017)\
**Post date:** [February 17, 2025, 1:27am UTC](https://forum.techsoft3d.com/t/how-to-describe-a-surface-with-an-inner-hole/4383/6 "2025-02-17T01:27:38Z")

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Hi,  
I recognized that I misunderstood the input params of [SC::Store::Utils::TriangulateFace](https://docs.techsoft3d.com/communicator/latest/api_ref/data_import/libsc/namespaceSC_1_1Store_1_1Utils.html#_CPPv4N2SC5Store5Utils15TriangulateFaceEPKN2SC5Store5PointEPKi6size_tRKN2SC5Store5PointERNSt6vectorIN2SC5Store5PointEEE), the interface supports polygonal surface, even the surface is not planar.  
Thanks for answering.

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