23 X3D Models 
X3D Model Descriptions 

Animated Nurbs Patch Surface Head

Example of animating controlPoint to simulate facial expressions  read my lips (pretty creepy!) 

Four Ducks

Nurbs exemplar using NurbsPatchSurface that shows four duck models 

Fred The Bunny

NURBS exemplar created using X3D NURBS Export Plugin for Maya. 

Hole Centered

A NurbsTrimmedSurface node rendering a square centered on the origin in the xy plane; with sides 8 units length. A trimming curve is used to cut out a circle of radius 1 unit centered on the origin. Red (x), Green (y) and Blue (z) line segments represent the xyz unit axes. 

Hole Large Offset

A NurbsTrimmedSurface node rendering a square centered on the origin in the xy plane; with sides 8 units length. A trimming curve is used to cut out a circle of radius 1 unit centered at the point (x,y)=(2,2) . Red (x), Green (y) and Blue (z) line segments represent the xyz unit axes. 

Hole Small Offset

A NurbsTrimmedSurface node rendering a square centered on the origin in the xy plane; with sides 8 units length. A trimming curve is used to cut out a circle of radius 1 unit centered at the point (x,y)=(1,1) . Red (x), Green (y) and Blue (z) line segments represent the xyz unit axes. 

Hurricane Lantern

NURBS model created using X3D NURBS Export Plugin for Maya. 

Mobius Nurbs

Demonstrates 3 NurbsSurfacePatch nodes defining the outer boundary of a toroidal solid. 

Nurbs Curve Example

NurbsCurve exemplar showing controlPoint animation. Upper example has knot values explicitly defined, lower example has implicit knot values. 

Nurbs Extern Prototypes

NonUniform Rational BSpline (NURBS) external prototype definitions, used for building VRML 97 signatures for inclusion in X3dToVrml97 conversion stylesheet. 

Nurbs Patch

This scene contains a single NurbsPatchSurface rendering onequarter of a cylindrical segment. The "solid" field of the surface is set false for so that surface is visible from both sides. Surface has semitransparent material appearance. Scene also contains unitlength line segments defining xyz coordinate axes. Defined Viewpoints show the inner and outer sides of the cylindrical surface 

Nurbs Patch Image Texture

A NURBS patch representing a segment of a cylinder. An applied image texture depicts the uv axes of the parametric coordinate system. Defined Viewpoints show the inner and outer sides of the cylindrical surface 

Nurbs Patch Solid

This scene contains a single NurbsPatchSurface rendering onequarter of a cylindrical segment. The "solid" field of the surface is set true for singlesided rendering, and Nurbs coordinates are oriented so that the outer surface of the cylinder is visible. Surface has semitransparent material appearance. Scene also contains unitlength line segments defining xyz coordinate axes. Defined Viewpoints show the inner and outer sides of the cylindrical surface 

Nurbs Patch Surface Example

Animated NURBS patch 

Nurbs Patch Surface Example Large

Animated NURBS patchype 

Nurbs Patch Surface Example With Oahu Texture

ImageTexture applied to animated NURBS patch using NurbsPatchSurface. Compare regular animation rendering to wireframemode rendering (if supported by X3D/VRML browser) in order to observe dynamic tessellation. 

Nurbs Position Interpolator Example

Example of animating a ball along a NurbsCurve. 

Nurbs Prototypes

NonUniform Rational BSpline (NURBS) prototype definitions. 

Nurbs Trimmed Surface Example

This scene contains a single NurbsTrimmedSurface rendering onequarter of a cylindrical segment; with a triangular notch cut from one edge. The "solid" field of the surface is set false so surface is visible from both sides. Surface has semitransparent material appearance. Scene also contains unitlength line segments defining xyz coordinate axes. Defined Viewpoints show the inner and outer sides of the cylindrical surface 

Stamp X3D Letters

A CAD model of a stamp with raised lettering. Model was created using commercial CAD package: AshlarVellum Argon; exported as STEP AP 203 data, and converted to X3D file using the online STEP browser at http://spri2.kshell.com website. Colors were applied using PythonProlog scripting. 

Stamp X3D Letters Halloween

A CAD model of a stamp with raised lettering. Model was created using commercial CAD package: AshlarVellum Argon; exported as STEP AP 203 data, and converted to X3D file using the online STEP browser at http://spri2.kshell.com. Colors were applied using PythonProlog scripting. 

Trimmed Nurbs With Hole

Scene contains a single NurbsTrimmedSurface node which has two Contour2D child nodes, defining a trimmed outer boundary to the patch and an interior hole in the patch. Scene also contains unitlength line segments defining xyz coordinate axes. 

Trimming Contour Example

Simple example demonstrating NURBS trimming contour content model. 