Distance between 2 points on mesh

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Hello,

I am trying to make a viewer of mesh object (stl) where we can pick 2 points on 
the screen and calcul the distance. Currently I try using the onmousedown event 
of the view, I got a PickInfo object with x,y, depth and the clicked mesh. But 
the depth is always -infinity. (I use webgl renderer) I looked into the 
jsc3d.js and found the the depth is not set when using webgl.

It is possible to retrieve the position (x,y,z) of a pick point on a mesh ?

Thank you.

Original issue reported on code.google.com by [email protected] on 9 Mar 2015 at 10:01