Creating a mesh out of a linerenderer - how do you convert revolved vertices set to triangles and uv's

Question

Suppose you draw a line using linerenderer (and also have an array of points) - how do you turn that into a mesh?

To elaborate on my question... As I understand, you will need triangles and uv's - not just vertices...

So, suppose you rotate about a circle each of the points on the 1-d line along its local y (or z axis), the one perpendicular to the plane of the line. How do you convert these to triangles and uv's?

The pictorial equivalent is a lathe - which starts out as a 1-d line in a plane, which you simply rotate about a circle in the perpendicular direction:

lathe

So, in sum:

I know how to generate the vertices.
I am not sure how to generate the triangles - are they simply, count the vertices from 0?
I am not sure how to generate the UV's - conformal mapping of the 3d mesh to a plane?--

Answer 1

Answer by Jessy · Jan 01, 2011 at 08:16 AM

You cannot read data from a Line Renderer, so a direct conversion is impossible, without copying and pasting in the Editor.

Edit: Now that you've altered your question, check here. Using "LineRenderer" in the title is misleading; this has nothing to do with Line Renderers. A "lathe" is indeed what you should be asking about.

As for UVs, who knows what you want to do with that. Trying to texture something like this, in a non-abstract way, without actually using a modeling program, will be ridiculous.

Add comment · Show 4 · Share

ina · Jan 02, 2011 at 03:26 AM 0

Share

Well you would also have an array of points (convertible to vertices) - the line renderer simply renders the array of points.

Jessy · Jan 02, 2011 at 05:01 AM 0

Share

Who says? There's no requirement to keep the array around. If you were to just populate it in the Editor, you'd have no way of accessing that data, again, other than copy and paste for every Vector component. I don't understand the logic of exposing that array in the Editor, when you can't alter it programmatically, but that's how it is for the time being?

ina · Jan 02, 2011 at 05:31 AM 0

Share

Well, you don't have to expose that points array - it could be a private global var.. Anyway your S/O link is totally useless... As mentioned in the bullet points, I know how to generate the vertices (which are just points rotated in a circle), I'm just not sure how to turn a bunch of vertex points into a mesh.

Jessy · Jan 02, 2011 at 06:19 AM 0

Share

If you have all the vertices you need, then just connect them: http://unity3d.com/support/documentation/ScriptReference/$$anonymous$$esh-triangles.html

Creating a mesh out of a linerenderer - how do you convert revolved vertices set to triangles and uv's

1 Reply

Your answer

Follow this Question

Related Questions