# How to make LiDAR Scanned point cloud stop shrinking when close **URL:** \ **Category:** Cesium for Unreal\ **Created:** [July 8, 2024, 4:27pm UTC](https://community.cesium.com/t/how-to-make-lidar-scanned-point-cloud-stop-shrinking-when-close/33624 "2024-07-08T16:27:30Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![dawalka99](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/dawalka99/32/14000_2.png) [@dawalka99](https://community.cesium.com/u/dawalka99)\ **Post date:** [July 8, 2024, 4:27pm UTC](https://community.cesium.com/t/how-to-make-lidar-scanned-point-cloud-stop-shrinking-when-close/33624/1 "2024-07-08T16:27:30Z")
Sorry for the vague topic title in advance. I have a Lidar scanned tileset that is in a JSON format and is a point cloud. I have used the Blank 3D Tiles Tileset actor and plugged in the URL to the JSON file and now it is in my level. The problem is that when far away, the tileset looks good, however the points appear to get smaller the closer the camera is to them making it look like empty space. Is there a way to stop this from happening? ![scan.PNG](https://global.discourse-cdn.com/cesium/original/3X/5/d/5d2ac6c77956aecc27e7b82c33fcd6fafe51ac05.jpeg) ---
**Author:** ![janine](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/janine/32/5135_2.png) [@janine](https://community.cesium.com/u/janine)\ **Post date:** [July 15, 2024, 5:35pm UTC](https://community.cesium.com/t/how-to-make-lidar-scanned-point-cloud-stop-shrinking-when-close/33624/2 "2024-07-15T17:35:24Z")
Hi @dawalka99, welcome to the community! This is expected behavior, but you can use the **Point Cloud Shading** settings to counteract this effect. Under your **Cesium 3D Tileset** , look for **Rendering \> Point Cloud Shading** , and enable **Attenuation**. This will make the points render as larger quads, so that they take up more space on the screen. ![image](https://global.discourse-cdn.com/cesium/original/3X/b/b/bb695689631b5924b1b7793a34e3dfd36eebbb36.png) The size of these quads scales with the geometric error of the tiles. However, you can configure the other settings to affect how large or small these quads appear. Let us know if you have any follow-up questions! ---
**Author:** ![dawalka99](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/dawalka99/32/14000_2.png) [@dawalka99](https://community.cesium.com/u/dawalka99)\ **Post date:** [July 17, 2024, 4:54pm UTC](https://community.cesium.com/t/how-to-make-lidar-scanned-point-cloud-stop-shrinking-when-close/33624/3 "2024-07-17T16:54:01Z")
Thanks Janine, I think I have something I can use. However, would you happen to know if there is a way to generate collision for the point cloud? I am making a VR application and it is somewhat important to have collision for the data visualization. ---
**Author:** ![janine](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/janine/32/5135_2.png) [@janine](https://community.cesium.com/u/janine)\ **Post date:** [July 22, 2024, 2:30pm UTC](https://community.cesium.com/t/how-to-make-lidar-scanned-point-cloud-stop-shrinking-when-close/33624/4 "2024-07-22T14:30:57Z")
Hi @dawalka99, I’m afraid we don’t currently generate collisions for point clouds. (The Chaos Physics system will only support triangle meshes.) The best workaround right now is to manually place a mesh that is invisible at runtime, to achieve collisions. However, I’ve written up a Github issue to track this feature request [here](https://github.com/CesiumGS/cesium-unreal/issues/1483). We’ll be sure to post to this issue when there is progress or new updates. Thank you! ---
**Author:** ![dawalka99](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/dawalka99/32/14000_2.png) [@dawalka99](https://community.cesium.com/u/dawalka99)\ **Post date:** [July 23, 2024, 1:42pm UTC](https://community.cesium.com/t/how-to-make-lidar-scanned-point-cloud-stop-shrinking-when-close/33624/5 "2024-07-23T13:42:41Z")
Awesome! Good to hear it. Thank you