# Point on the 3D Tiles represented by the root transform matrix

**URL:** <https://community.cesium.com/t/point-on-the-3d-tiles-represented-by-the-root-transform-matrix/10914>\
**Category:** CesiumJS\
**Created:** [September 14, 2020, 2:43am UTC](https://community.cesium.com/t/point-on-the-3d-tiles-represented-by-the-root-transform-matrix/10914 "2020-09-14T02:43:02Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![omar](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/omar/32/1999_2.png) [@omar](https://community.cesium.com/u/omar)\
**Post date:** [September 14, 2020, 2:40pm UTC](https://community.cesium.com/t/point-on-the-3d-tiles-represented-by-the-root-transform-matrix/10914/2 "2020-09-14T14:40:18Z")

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How is your 3D Tileset created? If you’re using Cesium ion, this thread has some information on this: [How to correctly position 3D models when tiling with Cesium ion](https://community.cesium.com/t/how-to-correctly-position-3d-models-when-tiling-with-cesium-ion/10498). The origin will be re-computed to be the center of the geometry, unless you’re using the REST API, which will retain the origin in the original coordinate system.

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