How to draw a model with wireframe

I now need to implement a function, that is, the model through the vertex draw wireframes, and do not draw the triangle face, just draw an outline of the model, the gradient effect, and then through the map, the model to realize a holographic effect, but at the moment, I met the problem is I don’t know how to inside the BBL model by vertex wireframe mapped, I refused to use a wireframe this property, because it will draw all the wireframe model including the triangle face, can someone help me please, this is my PG

https://www.babylonjs-playground.com/#4AJ16M#172

perhaps Edge Rendering with a transparent material can help?

https://playground.babylonjs.com/#TYAHX#324

edit: I just realized this is 5 years old : |

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