# The polygon is clipped

**URL:** <https://community.cesium.com/t/the-polygon-is-clipped/8469>\
**Category:** CesiumJS\
**Created:** [July 17, 2019, 11:25am UTC](https://community.cesium.com/t/the-polygon-is-clipped/8469 "2019-07-17T11:25:45Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![zzhangz](https://avatars.discourse-cdn.com/v4/letter/z/90db22/32.png) [@zzhangz](https://community.cesium.com/u/zzhangz)\
**Post date:** [July 17, 2019, 11:25am UTC](https://community.cesium.com/t/the-polygon-is-clipped/8469/1 "2019-07-17T11:25:45Z")

</div>

Description：  
I created a polygon, moved the camera closer to the polygon, and the polygon was clipped.

ULR is a screen recording file。

> **[clip.mp4 (video)](https://drive.google.com/file/d/1AkWBIFSNGCOr8zjrTE41ukuKOqL5vEwd/view?usp=drive_open)**
>
> Google Drive file.

Sandcastle code：

var viewer = new Cesium.Viewer('cesiumContainer');

var redPolygon = viewer.entities.add({  
&nbsp;&nbsp;&nbsp;&nbsp;name : 'Red polygon on surface',  
&nbsp;&nbsp;&nbsp;&nbsp;polygon : {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;hierarchy : Cesium.Cartesian3.fromDegreesArray([-115.0, 37.0,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-115.0, 36.0,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-114.0, 36.0,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-114.0, 37.0,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-115.0, 37.0]),  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;material : '../images/Cesium\_Logo\_Color.jpg',  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;height : 0,  
&nbsp;&nbsp;&nbsp;&nbsp;}  
});

viewer.zoomTo(viewer.entities);

---

<div class="post-metadata">

**Author:** ![zzhangz](https://avatars.discourse-cdn.com/v4/letter/z/90db22/32.png) [@zzhangz](https://community.cesium.com/u/zzhangz)\
**Post date:** [July 24, 2019, 1:15am UTC](https://community.cesium.com/t/the-polygon-is-clipped/8469/2 "2019-07-24T01:15:38Z")

</div>

This question has been bothering me. Can someone give me some advice?

---

<div class="post-metadata">

**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:** [August 6, 2019, 5:06pm UTC](https://community.cesium.com/t/the-polygon-is-clipped/8469/3 "2019-08-06T17:06:20Z")

</div>

It looks like the URL to the video you posted is not public (you may need to change the permissions on it to make it public). But I think I might know what the issue is. Try disabling logarithmicDepthBuffer: [https://cesiumjs.org/Cesium/Build/Documentation/Scene.html?classFilter=scene#logarithmicDepthBuffer](https://cesiumjs.org/Cesium/Build/Documentation/Scene.html?classFilter=scene#logarithmicDepthBuffer)

If that doesn’t fix it, try setting camera.frustum.near = 0.1. Let me know if either of those help.

---

<div class="post-metadata">

**Author:** ![zzhangz](https://avatars.discourse-cdn.com/v4/letter/z/90db22/32.png) [@zzhangz](https://community.cesium.com/u/zzhangz)\
**Post date:** [September 2, 2019, 11:01am UTC](https://community.cesium.com/t/the-polygon-is-clipped/8469/4 "2019-09-02T11:01:31Z")

</div>

Thank you, Although I have found a solution, that’s what you said.

---

<div class="post-metadata">

**Author:** ![holiday](https://avatars.discourse-cdn.com/v4/letter/h/d2c977/32.png) [@holiday](https://community.cesium.com/u/holiday)\
**Post date:** [September 3, 2019, 2:17am UTC](https://community.cesium.com/t/the-polygon-is-clipped/8469/5 "2019-09-03T02:17:39Z")

</div>