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How to create a shape which can only show part of edges


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I changed some configuration of your demo, and saved as https://www.babylonjs-playground.com/#W8L8IP#1 , actrually I just need a 2D(XoZ) product, but I found that in that way, if I commented the rotating operation and changed the width of the line, it will flash very quicky while I move/zoom the scene, and the line is not so clear.


I did not understand the way you mentioned for 2D, could you explain more on how to use sprite to do that?

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The flashing is because of z-fighting with the textures. You prevent this by separating the meshes (line 210). Having stopped the rotation the direction of separation has to change from z to y https://www.babylonjs-playground.com/#W8L8IP#2

As you want the shape too be in XoZ plane and to rotate, then sprites will not work as they always face the camera. You can achieve the same idea with a transparent image on the ground plane ( the image used would need improving but shows the idea) https://www.babylonjs-playground.com/#8UZ3JD

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