# How the frustum.near is calculated

**URL:** <https://community.cesium.com/t/how-the-frustum-near-is-calculated/28554>\
**Category:** CesiumJS\
**Created:** [December 6, 2023, 11:03am UTC](https://community.cesium.com/t/how-the-frustum-near-is-calculated/28554 "2023-12-06T11:03:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![xu\_xie](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/xu_xie/32/20936_2.png) [@xu\_xie](https://community.cesium.com/u/xu_xie)\
**Post date:** [December 6, 2023, 11:03am UTC](https://community.cesium.com/t/how-the-frustum-near-is-calculated/28554/1 "2023-12-06T11:03:29Z")

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Hi  
I would like to ask how the near of Frustum is calculated, curious about the principle in this respect,please tell me if you know anything about it  
Thanks