CADLayer

Overview

CADLayer nodes define a hierarchy that shows layer structure for a Computer-Aided Design (CAD) model. CADLayer is a Grouping node that can contain CADAssembly and most nodes.

The CADLayer node belongs to the CADGeometry component and requires at least level 2, its default container field is children. It is available from X3D version 3.1 or higher.

Hierarchy

+ X3DNode
  + X3DChildNode
    + X3DGroupingNode
      + CADLayer

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

• X3D Architecture 7.2.4 Metadata

SFString [in, out] name “”

Optional name for this particular CAD node.

Hints

• Well-defined names can simplify design and debugging through improved author understanding.
• X3D Scene Authoring Hints, Naming Conventions

Warning

• name field is not included if this instance is a USE node, in order to avoid potential mismatches.

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.

Warning

• CADLayer visible field had type MFBool in X3Dv3, thus is not backwards compatible.

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
• X3D Architecture, 10.3.1 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

• 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
• X3D Architecture, 10.3.1 X3DBoundedObject

MFNode [in] addChildren

Input field addChildren.

MFNode [in] removeChildren

Input field removeChildren.

MFNode [in, out] children [ ] [X3DChildNode]

Grouping nodes contain an ordered list of children nodes.

Hints

• Each grouping node defines a coordinate space for its children, relative to the coordinate space of its parent node. Thus transformations accumulate down the scene graph hierarchy.
• InputOnly MFNode addChildren field can append new X3DChildNode nodes via a ROUTE connection, duplicate input nodes (i.e. matching DEF, USE values) are ignored.
• InputOnly MFNode removeChildren field can remove nodes from the children list, unrecognized input nodes (i.e. nonmatching DEF, USE values) are ignored.
• X3D Architecture 10.2.1 Grouping and children node types

Advice

Hints

• Can also contain Shapes or other grouped content.
• X3D for Advanced Modeling (X3D4AM) slideset

Warning

• Requires X3D profile='Full' or else include <component name='CADGeometry' level='2'/>

See Also

• X3D Specification of CADLayer Node