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  • Figure 3.1. Default x-y-z coordinate axes for X3D scenes.

  • Figure 3.2. Aligning objects with the x-axis is a good practice that promotes consistent reusability.

  • Figure 3.3. The right-hand rule governs the relative order of the x-, y-, and z-axes. The first three fingers of your right hand should be able to align with each axis, in that order.

  • Figure 3.4. Right-hand rule for orientations provides the direction of positive rotation about an axis.

  • Figure 3.5. Screen snapshot of superimposed Box and Sphere, grouped together.

  • Figure 3.6. Transform nodes are used to translate, rotate, and scale Shape nodes. Each Transform creates a new local coordinate system for children nodes.

  • Figure 3.7. Order of operations is significant for translation and rotation.
  • Image Not Available - Figure 03-08
    Figure 3.8. X3D Specification excerpt that defines the order of sequential operations making up a Transform.

  • Figure 3.9. An Inline node can load an entirely separate scene into the current scene, adding new geometry to prior geometry.

  • Figure 3.10. LOD example showing scene graph, substitution texture image, substitution images covering a box when the viewpoint is farther away, and high-fidelity geometry when the viewpoint is close to LOD center.

  • Figure 3.11. LOD range values determine the camera-to-object distances where corresponding selection of child-node transitions occur.

  • Figure 3.12. Switch node example holding four different geometric shapes as children. Only one child of the Switch is rendered at a time, depending on the value of the whichChoice field.

Portions of this work are from the book,
X3D: 3D Graphics for Web Authors, by Don Brutzman and Leonard Daly, published by Morgan Kaufmann Publishers, Copyright 2007 Elsevier, Inc. All rights reserved.