# Polyline with arrow is blurred

**URL:** <https://community.cesium.com/t/polyline-with-arrow-is-blurred/3660>\
**Category:** CesiumJS\
**Created:** [January 29, 2016, 2:58am UTC](https://community.cesium.com/t/polyline-with-arrow-is-blurred/3660 "2016-01-29T02:58:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gregoryg123](https://avatars.discourse-cdn.com/v4/letter/g/bb73d2/32.png) [@gregoryg123](https://community.cesium.com/u/gregoryg123)\
**Post date:** [January 29, 2016, 2:58am UTC](https://community.cesium.com/t/polyline-with-arrow-is-blurred/3660/1 "2016-01-29T02:58:36Z")

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Hello,

I need to draw a thick polyline with arrow. However the line is blurred.  
When I set material to Cesium.Color.BROWN then the line is not blurred, but if I use PolylineArrowMaterialProperty, then it is blurred.

How can I get a polyline with arrow so that it is not blurred?

Thank you very much,

Greg

Here is sample code that demonstrates the problem:

Cesium.Math.setRandomNumberSeed(1234);

var viewer = new Cesium.Viewer('cesiumContainer', { infoBox : false });  
var entities = viewer.entities;

var i;  
var height;  
var positions;  
var stripeMaterial = new Cesium.StripeMaterialProperty({  
&nbsp;&nbsp;&nbsp;&nbsp;evenColor : Cesium.Color.WHITE.withAlpha(0.5),  
&nbsp;&nbsp;&nbsp;&nbsp;oddColor : Cesium.Color.BLUE.withAlpha(0.5),  
&nbsp;&nbsp;&nbsp;&nbsp;repeat : 5.0  
});

positions = ;  
for (i = 0; i \< 40; ++i) {  
&nbsp;&nbsp;&nbsp;&nbsp;positions.push(Cesium.Cartesian3.fromDegrees(-100.0 + i, 15.0));  
}  
entities.add({  
&nbsp;&nbsp;&nbsp;&nbsp;polyline : {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;positions : positions,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;width : 120.0,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;material : new Cesium.PolylineArrowMaterialProperty(Cesium.Color.BROWN)  
&nbsp;&nbsp;&nbsp;&nbsp;}  
});

viewer.zoomTo(viewer.entities);

---

<div class="post-metadata">

**Author:** ![hannah](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/hannah/32/4509_2.png) [@hannah](https://community.cesium.com/u/hannah)\
**Post date:** [January 29, 2016, 2:48pm UTC](https://community.cesium.com/t/polyline-with-arrow-is-blurred/3660/2 "2016-01-29T14:48:04Z")

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Hello,

Thanks for reporting this and including an example! This looks like a bug in Cesium. I’ve submitted an issue to our GitHub: [https://github.com/AnalyticalGraphicsInc/cesium/issues/3491](https://github.com/AnalyticalGraphicsInc/cesium/issues/3491)

Best,

Hannah