Difference between revisions of "X3D NURBS"
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These are references useful for implementors and users of the NURBS component. | These are references useful for implementors and users of the NURBS component. | ||
| − | A | + | A primary reference for NURBS curves and surfaces is: L Peigl and W Tiller, The NURBS Book, Springer-Verlag 2nd Ed. 1997. See the [http://www.smlib.com Solid Modeling Solutions] site for further information on this resource. |
NURBS example X3D models | NURBS example X3D models | ||
* [http://www.kshell.com/pages/nurbs_surface_demo NURBS Patch Surface] demonstration scenes and explanations for implementations by Vincent Marchetti | * [http://www.kshell.com/pages/nurbs_surface_demo NURBS Patch Surface] demonstration scenes and explanations for implementations by Vincent Marchetti | ||
| − | * [http://www.kshell.com/pages/trimmed_nurbs_demo NURBS Trimmed Surface] | + | * [http://www.kshell.com/pages/trimmed_nurbs_demo NURBS Trimmed Surface] shows examples of NurbsTrimmedSurface node with internal trimming curves by Vincent Marchetti |
Michalis Kamburelis has summarized the use of [http://castle-engine.sourceforge.net/x3d_implementation_nurbs.php#section_homogeneous_coordinates weights and control points] in X3D. Note that the X3D terminology is different from the terminology used in the STEP standard. As specified in Part 42 of the STEP (ISO 10303) the "control points" attribute of a b-spline (including nurbs) entity contains the coordinates a point in real, not homegeneous, space. See the standards document ISO 10303-42:1998(E) section 4.4.70 | Michalis Kamburelis has summarized the use of [http://castle-engine.sourceforge.net/x3d_implementation_nurbs.php#section_homogeneous_coordinates weights and control points] in X3D. Note that the X3D terminology is different from the terminology used in the STEP standard. As specified in Part 42 of the STEP (ISO 10303) the "control points" attribute of a b-spline (including nurbs) entity contains the coordinates a point in real, not homegeneous, space. See the standards document ISO 10303-42:1998(E) section 4.4.70 | ||
[http://www.web3d.org/x3d/wiki/images/1/17/X3D_Browser_NURBS_Evaluation.pdf X3D Browser Evaluation] PDF, Oct 2012: A summary of the state of X3D browsers' rendering of NurbsPatchSurface and NurbsTrimmedSurface nodes. | [http://www.web3d.org/x3d/wiki/images/1/17/X3D_Browser_NURBS_Evaluation.pdf X3D Browser Evaluation] PDF, Oct 2012: A summary of the state of X3D browsers' rendering of NurbsPatchSurface and NurbsTrimmedSurface nodes. | ||
Revision as of 18:26, 25 July 2013
These are references useful for implementors and users of the NURBS component.
A primary reference for NURBS curves and surfaces is: L Peigl and W Tiller, The NURBS Book, Springer-Verlag 2nd Ed. 1997. See the Solid Modeling Solutions site for further information on this resource.
NURBS example X3D models
- NURBS Patch Surface demonstration scenes and explanations for implementations by Vincent Marchetti
- NURBS Trimmed Surface shows examples of NurbsTrimmedSurface node with internal trimming curves by Vincent Marchetti
Michalis Kamburelis has summarized the use of weights and control points in X3D. Note that the X3D terminology is different from the terminology used in the STEP standard. As specified in Part 42 of the STEP (ISO 10303) the "control points" attribute of a b-spline (including nurbs) entity contains the coordinates a point in real, not homegeneous, space. See the standards document ISO 10303-42:1998(E) section 4.4.70
X3D Browser Evaluation PDF, Oct 2012: A summary of the state of X3D browsers' rendering of NurbsPatchSurface and NurbsTrimmedSurface nodes.
