How to control the line changes when the camera changes

[AmosJJ]

Now, i draw a line with MeshLine, and when i pull the camera , the line becomes larger,but i want the line tapering, what should i do? thanks !

[spite]

I'm sorry, I'm not really following. By line tapering you mean attenuated with distance, like it's thinner the farther it is?

[AmosJJ]

Yes,as you understand the same.Can you help me?

[Simon-wu]

help him please！ if he can not do it his boss will fire him

[spite]

Set the material's sizeAttenuation value to true

[AmosJJ]

@spite thanks!

[AmosJJ]

@spite now，the lines on the object when i move the camera !

http://p.ckiosk.cn/map/n/sources/map20170216.png

[spite]

I'm sorry, what's the issue here?

[AmosJJ]

Yes,the line is float when i rotated camera!

[inear]

I think I have the same problem. When camera moves, the line nodes is not longer connected to the positions they suppose to follow, if I for example have a mesh at each point that the line should connect to.

[spite]

Do you have an example to show the problem?

[inear]

I solved my problem, and it was not cause of your code. I displace the positions (curr,prev,next) in the vertex-shader, and forgot to work in model-space. Once I applied the projection and view matrix after my manipulations it worked fine.