Re: vrml mesh

From: Delft Spline Systems (
Date: Tue Feb 01 2000 - 23:22:05 EET

At Tuesday 2/1/00 , you wrote:
> Just got the new update package of our software (Vero VISI-series):
> I saw it is possible now to export a vrml-mesh file of a 3d solid. My first
> impression (visual) is that the meshes are about the same as an .stl mesh.
> Can someone inform me on what the difference there is between these 2 mesh
> data types, and wherefor/when a vrml-mesh is used?
> Thank you and kind regards,
> Jorn

Beste Jorn,

The basic geometry description in STL and VRML is indeed the same: the
surface of the geometry described in (small) triangles.

Though, in VRML a number of extra options is present, like:
- colour
- basic shapes like spheres, boxes etc
- a tree-like structure. For instance for a car the VRML file can do with
describing the geometry of one wheel only. The other three wheels can
be defined as repeated instances, using a transformation matrix to
define the new position and orientation.

Do note that two different versions are defined: VRML V1.0 and V2.0

Basic use of VRML is transferring 3D geometry over the Internet: the
format description is closely related to HTML
You can download VRML plug-ins for the Navigator and Explorer browsers.
In practice VRML files will thus be much smaller than STL, for a short
download time.
Still VRML can be used very well for RP: our DeskProto RP software
imports both STL and VRML, which is easy in cases where for instance
an assembly cannot be exported as STL.

Best Regards,

Lex Lennings.

Delft Spline Systems, The Netherlands.
We offer DeskProto: affordable Rapid Prototyping using CNC milling Website:

For more information about the rp-ml, see

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