Post

InstancedShape

Posted Updated
By CREATE3000
2 min read

Overview

InstancedShape can appear under any grouping node. InstancedShape can contain an Appearance node and a geometry node (for example one of the primitives Box Cone Cylinder Sphere Text, one of ElevationGrid Extrusion IndexedFaceSet IndexedLineSet LineSet PointSet, or one of the other geometry nodes) and this geometry node is instantiated as often as transformations are provided.

The InstancedShape node belongs to the X_ITE component and its default container field is children. It is available in X_ITE.

Info: Please note that this node is still experimental, i.e. the functionality of this node may change in future versions of X_ITE.

Hierarchy

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+ X3DNode
  + X3DChildNode
    + X3DShapeNode
      + InstancedShape

Fields

SFNode [in, out] metadata NULL [X3DMetadataObject]

Information about this node can be contained in a MetadataBoolean, MetadataDouble, MetadataFloat, MetadataInteger, MetadataString or MetadataSet node.

Hint

MFVec3f [in, out] translations [ ] (-∞,∞)

Input/Output field translations.

MFRotation [in, out] rotations [ ] (-∞,∞) or [-1,1]

Input/Output field rotations.

MFVec3f [in, out] scales [ ] (-∞,∞)

Input/Output field scales.

SFBool [in, out] pointerEvents TRUE non standard

pointerEvents defines whether this Shape becomes target for pointer events.

SFBool [in, out] castShadow TRUE

Input/Output field castShadow.

SFBool [in, out] visible TRUE

Whether or not renderable content within this node is visually displayed.

Hints

  • The visible field has no effect on animation behaviors, event passing or other non-visual characteristics.
  • Content must be visible to be collidable and to be pickable.

SFBool [in, out] bboxDisplay FALSE

Whether to display bounding box for associated geometry, aligned with world coordinates.

Hint

  • The bounding box is displayed regardless of whether contained content is visible.

SFVec3f [ ] bboxSize -1 -1 -1 [0,∞) or −1 −1 −1

Bounding box size is usually omitted, and can easily be calculated automatically by an X3D player at scene-loading time with minimal computational cost. Bounding box size can also be defined as an optional authoring hint that suggests an optimization or constraint.

Hints

  • Can be useful for collision computations or inverse-kinematics (IK) engines.
  • Precomputation and inclusion of bounding box information can speed up the initialization of large detailed models, with a corresponding cost of increased file size.
  • X3D Architecture, 10.2.2 Bounding boxes /Part01/components/grouping.html#BoundingBoxes
  • X3D Architecture, 10.3.1 X3DBoundedObject /Part01/components/grouping.html#X3DBoundedObject

SFVec3f [ ] bboxCenter 0 0 0 (-∞,∞)

Bounding box center accompanies bboxSize and provides an optional hint for bounding box position offset from origin of local coordinate system.

Hints

SFNode [in, out] appearance NULL [X3DAppearanceNode]

Input/Output field appearance.

SFNode [in, out] geometry NULL [X3DGeometryNode]

Input/Output field geometry.

Advice

Hints

  • Shape
  • The Shape design pattern to collect appearance and geometry together is fundamentally the same for many types of 3D graphics software and hardware.
  • For advanced extensibility, authors can substitute a type-matched ProtoInstance node (with correct containerField value) for contained node content.
  • X3D Architecture 12.2.1 Shape nodes
  • X3D Architecture 17.2.2 Lighting model
  • Apply containerField='shape' if parent node is CADFace.

Example

See Also

X_ITE

components, X_ITE
InstancedShape X_ITE
This post is licensed under CC BY 4.0 by the author.