# To find intersection point of geometric entites

**URL:** <https://community.cesium.com/t/to-find-intersection-point-of-geometric-entites/8933>\
**Category:** CesiumJS\
**Created:** [December 10, 2019, 4:28pm UTC](https://community.cesium.com/t/to-find-intersection-point-of-geometric-entites/8933 "2019-12-10T16:28:28Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![meseenu1979](https://avatars.discourse-cdn.com/v4/letter/m/d6d6ee/32.png) [@meseenu1979](https://community.cesium.com/u/meseenu1979)\
**Post date:** [December 10, 2019, 4:28pm UTC](https://community.cesium.com/t/to-find-intersection-point-of-geometric-entites/8933/1 "2019-12-10T16:28:28Z")

</div>

**hi all,**

**1. A concise explanation of the problem you’re experiencing.**

Im making a application in which im using cesium geometric entities. like circle, polygon, polyline, . All in objects in 3D.

I need to find intersection points of line with circle or polygon. Line is drawn vertically up from ground (say 10 meters or 500 meters) and there is a rectangle/ circle or polygon drawn above ground (say 200 meters). how do i find the point of intersection on line.

**3. Context. Why do you need to do this? We might know a better way to accomplish your goal.**

Once I am able to find the point of intersection then I would say this line is permitted. if the line touchs or cross the rectangle then i’ll say this height is not permissible, and ask the line to be cut

**4. The Cesium version you’re using, your operating system and browser.**

Iam using cesium 1.63.

(sorry to ask lot of question… should i use any thing other than geometry elements ? )

---

<div class="post-metadata">

**Author:** ![MUKUND\_THAKARE](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/mukund_thakare/32/7595_2.png) [@MUKUND\_THAKARE](https://community.cesium.com/u/MUKUND_THAKARE)\
**Post date:** [January 27, 2022, 10:23am UTC](https://community.cesium.com/t/to-find-intersection-point-of-geometric-entites/8933/2 "2022-01-27T10:23:51Z")

</div>

@meseenu1979  
were you able to solve this problem ?

thanks !!

---

<div class="post-metadata">

**Author:** ![dihand](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/dihand/32/6622_2.png) [@dihand](https://community.cesium.com/u/dihand)\
**Post date:** [January 27, 2022, 2:10pm UTC](https://community.cesium.com/t/to-find-intersection-point-of-geometric-entites/8933/3 "2022-01-27T14:10:25Z")

</div>

may be this link can help  
[https://cesium.com/learn/cesiumjs/ref-doc/IntersectionTests.html?classFilter=test](https://cesium.com/learn/cesiumjs/ref-doc/IntersectionTests.html?classFilter=test)