How to show line weight in Web Viewer?

I can set and view the line weight in AutoCAD(or other web Viewer ex: ODA demoViewe or MeshLine Threejs ) for lines (or curves) and the width of lines (curves) not change when I zoom in or zoom out. How can I do this in HOOPS Web Viewer?

Screen Shot!

MeshLine Threejs Demo:
http://spite.github.io/THREE.MeshLine/demo/graph.html

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