# the material of polygon has a problem that is mirrored of the images

**URL:** <https://community.cesium.com/t/the-material-of-polygon-has-a-problem-that-is-mirrored-of-the-images/7592>\
**Category:** CesiumJS\
**Created:** [October 22, 2018, 1:30am UTC](https://community.cesium.com/t/the-material-of-polygon-has-a-problem-that-is-mirrored-of-the-images/7592 "2018-10-22T01:30:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yff5228](https://avatars.discourse-cdn.com/v4/letter/y/e68b1a/32.png) [@yff5228](https://community.cesium.com/u/yff5228)\
**Post date:** [October 22, 2018, 1:30am UTC](https://community.cesium.com/t/the-material-of-polygon-has-a-problem-that-is-mirrored-of-the-images/7592/1 "2018-10-22T01:30:19Z")

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1. A concise explanation of the problem you're experiencing.

the material of polygon has a problem that is mirrored of the images

2. A minimal code example. If you've found a bug, this helps us reproduce and repair it.

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.fromDegreesArrayHeights([115.0, 37.0,100000,  
&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;102.0, 35.0,400000,  
&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;102.0, 31.0,6000,  
&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, 32.0,400000  
&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;&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;perPositionHeight: true,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;material : '../images/Cesium\_Logo\_Color.jpg'  
&nbsp;&nbsp;&nbsp;&nbsp;}  
});

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

i want to display images normally

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

cesium 1.50 chrome

---

<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:** [October 22, 2018, 8:21pm UTC](https://community.cesium.com/t/the-material-of-polygon-has-a-problem-that-is-mirrored-of-the-images/7592/2 "2018-10-22T20:21:37Z")

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Hey, see my response here:

[https://groups.google.com/d/msg/cesium-dev/URGHFvXT-uU/ZSw001pbCAAJ](https://groups.google.com/d/msg/cesium-dev/URGHFvXT-uU/ZSw001pbCAAJ)