[osg-users] Geometry of Generic 3D Surface from Collection of Points

Robert Osfield robert.osfield at gmail.com
Mon Aug 17 01:51:44 PDT 2015

Hi Erik,

The OSG has the osgUtil::DelaunayTriangulator and the GLU based
osgUtil::Tessellator can be used for tessellating meshes, but both utilize
a 2D projection to a plan to work out the connectivity so aren't
appropriate for meshes that will be folded.


On 17 August 2015 at 02:21, Erik Hensens <ehensens at hunter.com> wrote:

> Hi everyone!
> I have a collection of Vec3 vertices that define the shape of a geometry
> that I'd like to create. Typically I would create the geometry by adding a
> primitive set of the POLYGON type, but what should I do if the vertices are
> not all in the same plane?
> I'm sure this is a very common task and that there's probably a simple way
> to achieve this. What is the best basic approach to creating such a
> geometry?
> Ideally I'd like to be able to do this without having to choose the
> individual triangles or quads that will make up the entire geometry. For
> example, if I wanted to model any generic three-dimensional surface and all
> I had was a large sample of points on the surface.
> In case I'm not doing a good job explaining what I need, I've attached an
> image - let's say I had many points on the surface of that shape and I need
> to make a geometry that depicts it. How would I do this?
> Thanks in advance for your help![/img]
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=64792#64792
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