I've a set of voxel data and I want to create a mesh out of it at run-time.
I've looked into
MeshHelper but I haven't found anything useful or a good tutorial how to use them. Can anyone tell me how to create a mesh at run-time?
I think this should answer your question: http://forums.create.msdn.com/forums/p/4751/24616.aspx
Basically you should just create a vertex and index buffer yourself (you can wrap them up in a nice class that implements IDrawable ofc).
Once you have a vertex and index buffer you can draw your model like in this MSDN article:
I have been working on 2D game 2y ago and had to draw shapes like thet. You could look what I have done Project - Squared
Take a look at GraphicsDrawer class under SquaredEngine.Graphics, it will allow you to draw some basic meshes, triangles, lines, quads, ellipses, etc.
You could easily make this to work in 3D env.