# Cesiumpolygonrasteroverlay is not directly below clipping cesiumCartographicPolygon **URL:** \ **Category:** Cesium for Unreal\ **Created:** [July 18, 2023, 6:39am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442 "2023-07-18T06:39:50Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![lezming](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lezming/32/14928_2.png) [@lezming](https://community.cesium.com/u/lezming)\ **Post date:** [July 18, 2023, 6:39am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/1 "2023-07-18T06:39:50Z")
![image](https://global.discourse-cdn.com/cesium/original/2X/d/d3dc2227597adc439533b29a6e81a91bd108c664.jpeg) ---
**Author:** ![lezming](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lezming/32/14928_2.png) [@lezming](https://community.cesium.com/u/lezming)\ **Post date:** [July 18, 2023, 6:43am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/2 "2023-07-18T06:43:59Z")
who can tell me WHY ---
**Author:** ![lezming](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lezming/32/14928_2.png) [@lezming](https://community.cesium.com/u/lezming)\ **Post date:** [July 18, 2023, 6:59am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/3 "2023-07-18T06:59:24Z")
Why is there no overlap, not directly below, there is displacement ---
**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 18, 2023, 2:00pm UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/4 "2023-07-18T14:00:02Z")
Hi @lezming, Can you describe in more detail what’s happening so we can better help you? To check our understanding: you added a Cesium Cartographic Polygon, and a `CesiumPolygonRasterOverlay` to allow clipping on the tileset. In the image you sent us, is there only one Cesium Cartographic Polygon? Are you saying that the tileset is clipping a region completely outside where the polygon actually is? It would also help to know what tileset you’re using, and to give us the coordinates where you’re trying to clip out terrain. ---
**Author:** ![Kevin\_Ring](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/kevin_ring/32/2003_2.png) [@Kevin\_Ring](https://community.cesium.com/u/Kevin_Ring)\ **Post date:** [July 18, 2023, 10:04pm UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/5 "2023-07-18T22:04:49Z")
Check for a transformation on your Cesium3DTileset. Currently, such a transformation will not be accounted for correctly by the Cartographic Polygon (though I have this fixed in a branch so it will be solved in a future version). ---
**Author:** ![lezming](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lezming/32/14928_2.png) [@lezming](https://community.cesium.com/u/lezming)\ **Post date:** [July 19, 2023, 9:40am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/6 "2023-07-19T09:40:54Z")
Yes. the tileset is clipping a region completely outside where the polygon actually is,But now its OK ,Perhaps its an accidental mistake. ![20230719174112](https://global.discourse-cdn.com/cesium/original/2X/4/4d13791277f70e1f4d34d5e217f475d2a42da672.jpeg) ---
**Author:** ![lezming](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lezming/32/14928_2.png) [@lezming](https://community.cesium.com/u/lezming)\ **Post date:** [July 20, 2023, 2:45am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/7 "2023-07-20T02:45:07Z")
OMG，The program made the error again, today there was an offset in position, I created a polygon, then assigned 3 points, at this time run the refresh Tileset and that’s it ( cliping is not at location of 3points) ![1](https://global.discourse-cdn.com/cesium/original/2X/8/8373104a7035e7aa577f45f9662cc0dd86b73603.jpeg) ![2](https://global.discourse-cdn.com/cesium/original/2X/7/76f35a09a217238d4e9902152f67293c7dc89fa5.jpeg) ![3](https://global.discourse-cdn.com/cesium/original/2X/5/5c07dd6d189eb78b105aa6101c9bac66f1d717c4.jpeg) ![4](https://global.discourse-cdn.com/cesium/original/2X/6/62c2347f374921a77808925c767654d3268a7cda.jpeg) ![5](https://global.discourse-cdn.com/cesium/original/2X/5/5a42031d47c2d5a5ad1ccea21937e6ea49cfb494.jpeg) ---
**Author:** ![lezming](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lezming/32/14928_2.png) [@lezming](https://community.cesium.com/u/lezming)\ **Post date:** [July 20, 2023, 2:48am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/8 "2023-07-20T02:48:32Z")
That’s all the code ![6](https://global.discourse-cdn.com/cesium/original/2X/4/4868110a25427b938fb091f7ac8299f00f18e8e4.jpeg) ---
**Author:** ![Kevin\_Ring](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/kevin_ring/32/2003_2.png) [@Kevin\_Ring](https://community.cesium.com/u/Kevin_Ring)\ **Post date:** [July 20, 2023, 4:56am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/9 "2023-07-20T04:56:40Z")
Did you check to see if there’s a transformation on the Cesium3DTileset? That is, a non-zero location or rotation, or a non-one scale? ---
**Author:** ![lezming](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lezming/32/14928_2.png) [@lezming](https://community.cesium.com/u/lezming)\ **Post date:** [July 20, 2023, 6:10am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/10 "2023-07-20T06:10:23Z")
is here ？ ![7](https://global.discourse-cdn.com/cesium/original/2X/5/5547fc0bbdd3ba80546fad8fcd1a0c065e759750.png) ---
**Author:** ![Kevin\_Ring](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/kevin_ring/32/2003_2.png) [@Kevin\_Ring](https://community.cesium.com/u/Kevin_Ring)\ **Post date:** [July 20, 2023, 6:44am UTC](https://community.cesium.com/t/cesiumpolygonrasteroverlay-is-not-directly-below-clipping-cesiumcartographicpolygon/25442/11 "2023-07-20T06:44:25Z")
Yep, this is the problem. Set these fields to 0.0: ![image](https://global.discourse-cdn.com/cesium/original/2X/b/b88cd246456b731617b064242fbe36a5ad2675fb.png) We’re working on this, so in the next couple of months it should be possible to have a transformation on the tileset and for polygons to still work. But right now, you’ll have alignment issues any time the transformation is not identity.