Collision (X3DJSAIL, X3D Java Scene Access Interface Library)

All Superinterfaces:

X3DBoundedObject, X3DChildNode, X3DGroupingNode, X3DNode, X3DSensorNode

All Known Implementing Classes:

CollisionObject
```
public interface Collision
extends X3DGroupingNode, X3DSensorNode
```
Abstract node interface, defined by X3D specification to support X3D Java interoperability.

X3D node tooltip: [X3DGroupingNode,X3DSensorNode] Collision detects camera-to-object contact using current view and NavigationInfo avatarSize. Collision is a Grouping node that reports collision detection for its children.
- Hint: Collision can contain a single proxy child node for substitute collision-detection geometry. Improve run-time performance by using proxy with simpler contact-calculation geometry.
- Hint: proxy shapes are not rendered and remain invisible.
- Hint: apply containerField='proxy' to uniquely identify the proxy child Shape or grouping node.
- Warning: PointSet, IndexedLineSet, LineSet and Text are not collidable geometry do not trigger collisions.
- Hint: NavigationInfo types '"WALK" "FLY"' support camera-to-object collision detection.
- Hint: insert a Shape node before adding geometry or Appearance.
Package hint: This interface is defined by the X3D Java Language Binding Specification for the Scene Authoring Interface (SAI).
See Also:

SAI Java Specification: TODO, X3D Abstract Specification: Collision, X3D Tooltips: Collision, X3D Scene Authoring Hints

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`addChildren(X3DNode[] newValue)` Add array of children nodes to array of existing nodes (if any).
`float[]`	`getBboxCenter()` Provide array of 3-tuple float results from initializeOnly SFVec3f field named bboxCenter.
`float[]`	`getBboxSize()` Provide array of 3-tuple float results within allowed range of [0,infinity), or default value [-1 -1 -1], from initializeOnly SFVec3f field named bboxSize.
`X3DNode[]`	`getChildren()` Provide array of X3DNode results (using an array consisting of properly typed nodes or ProtoInstanceObjects) from inputOutput MFNode field children.
`double`	`getCollideTime()` Provide double value in seconds from outputOnly SFTime field named collideTime.
`boolean`	`getEnabled()` Provide boolean value from inputOutput SFBool field named enabled.
`boolean`	`getIsActive()` Provide boolean value from outputOnly SFBool field named isActive.
`X3DMetadataObject`	`getMetadata()` Provide X3DMetadataObject instance (using a properly typed node) from inputOutput SFNode field metadata.
`X3DChildNode`	`getProxy()` Provide X3DChildNode instance (using a properly typed node) from initializeOnly SFNode field proxy.
`Collision`	`setBboxCenter(float[] newValue)` Assign 3-tuple float array to initializeOnly SFVec3f field named bboxCenter.
`Collision`	`setBboxSize(float[] newValue)` Assign 3-tuple float array within allowed range of [0,infinity), or default value [-1 -1 -1], to initializeOnly SFVec3f field named bboxSize.
`void`	`setChildren(X3DNode newValue)` Set single children node, replacing prior array of existing nodes (if any).
`Collision`	`setChildren(X3DNode[] newValue)` Assign X3DNode array (using an array consisting of properly typed nodes or ProtoInstanceObjects) to inputOutput MFNode field children.
`Collision`	`setCssClass(java.lang.String newValue)` Assign String value to inputOutput SFString field named class.
`Collision`	`setDEF(java.lang.String newValue)` Assign String value to inputOutput SFString field named DEF.
`Collision`	`setEnabled(boolean newValue)` Assign boolean value to inputOutput SFBool field named enabled.
`Collision`	`setMetadata(X3DMetadataObject newValue)` Assign X3DMetadataObject instance (using a properly typed node) to inputOutput SFNode field metadata.
`Collision`	`setProxy(X3DChildNode newValue)` Assign X3DChildNode instance (using a properly typed node) to initializeOnly SFNode field proxy.
`Collision`	`setUSE(java.lang.String newValue)` Assign String value to inputOutput SFString field named USE.

- Method Detail
  - getBboxCenter
```
float[] getBboxCenter()
```
    Provide array of 3-tuple float results from initializeOnly SFVec3f field named bboxCenter.
    
    Tooltip: Bounding box center accompanies bboxSize and provides an optional hint for bounding box position offset from origin of local coordinate system.
    - Hint: precomputation and inclusion of bounding box information can speed up the initialization of large detailed models, with a corresponding cost of increased file size.
    - Hint: X3D Architecture, 10.2.2 Bounding boxes
      http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/group.html#BoundingBoxes
    Specified by:
    
    getBboxCenter in interface X3DBoundedObject
    
    Specified by:
    
    getBboxCenter in interface X3DGroupingNode
    
    Returns:
    
    value of bboxCenter field
  - setBboxCenter
```
Collision setBboxCenter(float[] newValue)
```
    Assign 3-tuple float array to initializeOnly SFVec3f field named bboxCenter.
    
    Tooltip: Bounding box center accompanies bboxSize and provides an optional hint for bounding box position offset from origin of local coordinate system. Hint: precomputation and inclusion of bounding box information can speed up the initialization of large detailed models, with a corresponding cost of increased file size. Hint: X3D Architecture, 10.2.2 Bounding boxes http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/group.html#BoundingBoxes
    
    Specified by:
    
    setBboxCenter in interface X3DBoundedObject
    
    Specified by:
    
    setBboxCenter in interface X3DGroupingNode
    
    Parameters:
    
    newValue - is new value for the bboxCenter field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
  - getBboxSize
```
float[] getBboxSize()
```
    Provide array of 3-tuple float results within allowed range of [0,infinity), or default value [-1 -1 -1], from initializeOnly SFVec3f field named bboxSize.
    
    Tooltip: 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.
    - Hint: can be useful for collision computations or inverse-kinematics (IK) engines.
    - Hint: precomputation and inclusion of bounding box information can speed up the initialization of large detailed models, with a corresponding cost of increased file size.
    - Hint: X3D Architecture, 10.2.2 Bounding boxes
      http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/group.html#BoundingBoxes
    Specified by:
    
    getBboxSize in interface X3DBoundedObject
    
    Specified by:
    
    getBboxSize in interface X3DGroupingNode
    
    Returns:
    
    value of bboxSize field
  - setBboxSize
```
Collision setBboxSize(float[] newValue)
```
    Assign 3-tuple float array within allowed range of [0,infinity), or default value [-1 -1 -1], to initializeOnly SFVec3f field named bboxSize.
    
    Tooltip: 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. Hint: can be useful for collision computations or inverse-kinematics (IK) engines. Hint: precomputation and inclusion of bounding box information can speed up the initialization of large detailed models, with a corresponding cost of increased file size. Hint: X3D Architecture, 10.2.2 Bounding boxes http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/group.html#BoundingBoxes
    
    Specified by:
    
    setBboxSize in interface X3DBoundedObject
    
    Specified by:
    
    setBboxSize in interface X3DGroupingNode
    
    Parameters:
    
    newValue - is new value for the bboxSize field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
  - getChildren
```
X3DNode[] getChildren()
```
    Provide array of X3DNode results (using an array consisting of properly typed nodes or ProtoInstanceObjects) from inputOutput MFNode field children.
    
    Tooltip: [X3DChildNode] Grouping nodes contain an ordered list of children nodes.
    - Hint: 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.
    - Hint: inputOnly MFNode addChildren field can append new X3DChildNode nodes via a ROUTE connection, duplicate input nodes (i.e. matching DEF, USE values) are ignored.
    - Hint: inputOnly MFNode removeChildren field can remove nodes from the children list, unrecognized input nodes (i.e. nonmatching DEF, USE values) are ignored.
    - Hint: X3D Architecture 10.2.1 Grouping and children node types,
      http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/group.html#GroupingAndChildrenNodes
    Warning: according to X3D Unified Object Model (X3DUOM), acceptable node types are limited to X3DChildNode.
    Specified by:
    
    getChildren in interface X3DGroupingNode
    
    Returns:
    
    value of children field
    
    See Also:
    
    X3DChildNode
  - setChildren
```
Collision setChildren(X3DNode[] newValue)
```
    Assign X3DNode array (using an array consisting of properly typed nodes or ProtoInstanceObjects) to inputOutput MFNode field children.
    
    Tooltip: [X3DChildNode] Grouping nodes contain an ordered list of children nodes. Hint: 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. Hint: inputOnly MFNode addChildren field can append new X3DChildNode nodes via a ROUTE connection, duplicate input nodes (i.e. matching DEF, USE values) are ignored. Hint: inputOnly MFNode removeChildren field can remove nodes from the children list, unrecognized input nodes (i.e. nonmatching DEF, USE values) are ignored. Hint: X3D Architecture 10.2.1 Grouping and children node types, http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/group.html#GroupingAndChildrenNodes
    
    Note: according to X3D Unified Object Model (X3DUOM), acceptable node types are limited to X3DChildNode.
    
    Specified by:
    
    setChildren in interface X3DGroupingNode
    
    Parameters:
    
    newValue - is new value for the children field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
  - addChildren
```
void addChildren(X3DNode[] newValue)
```
    Add array of children nodes to array of existing nodes (if any).
    
    Note: according to X3D Unified Object Model (X3DUOM), acceptable node types are limited to X3DChildNode.
    
    Specified by:
    
    addChildren in interface X3DGroupingNode
    
    Parameters:
    
    newValue - is new value array to be appended the children field.
  - setChildren
```
void setChildren(X3DNode newValue)
```
    Set single children node, replacing prior array of existing nodes (if any).
    
    Specified by:
    
    setChildren in interface X3DGroupingNode
    
    Parameters:
    
    newValue - is new node for the children field
  - getCollideTime
```
double getCollideTime()
```
    Provide double value in seconds from outputOnly SFTime field named collideTime.
    
    Tooltip: Time of collision between camera (avatar) and geometry.
    - Warning: it is an error to define this transient outputOnly field in an X3D file.
    Returns:
    
    value of collideTime field
  - getEnabled
```
boolean getEnabled()
```
    Provide boolean value from inputOutput SFBool field named enabled.
    
    Tooltip: Enables/disables collision detection for children and all descendants.
    - Hint: former name "collide" in VRML97 specification.
    Specified by:
    
    getEnabled in interface X3DSensorNode
    
    Returns:
    
    value of enabled field
  - setEnabled
```
Collision setEnabled(boolean newValue)
```
    Assign boolean value to inputOutput SFBool field named enabled.
    
    Tooltip: Enables/disables collision detection for children and all descendants. Hint: former name "collide" in VRML97 specification.
    
    Specified by:
    
    setEnabled in interface X3DSensorNode
    
    Parameters:
    
    newValue - is new value for the enabled field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
  - getIsActive
```
boolean getIsActive()
```
    Provide boolean value from outputOnly SFBool field named isActive.
    
    Tooltip: isActive true/false events are sent when triggering the sensor. isActive=true when view-object collision occurs, isActive=false when view-object collision no longer occurs.
    - Warning: it is an error to define this transient outputOnly field in an X3D file.
    Specified by:
    
    getIsActive in interface X3DSensorNode
    
    Returns:
    
    value of isActive field
  - getMetadata
```
X3DMetadataObject getMetadata()
```
    Provide X3DMetadataObject instance (using a properly typed node) from inputOutput SFNode field metadata.
    
    Specified by:
    
    getMetadata in interface X3DChildNode
    
    Specified by:
    
    getMetadata in interface X3DGroupingNode
    
    Specified by:
    
    getMetadata in interface X3DNode
    
    Specified by:
    
    getMetadata in interface X3DSensorNode
    
    Returns:
    
    value of metadata field
    
    See Also:
    
    X3D Scene Authoring Hints: Metadata Nodes
  - setMetadata
```
Collision setMetadata(X3DMetadataObject newValue)
```
    Assign X3DMetadataObject instance (using a properly typed node) to inputOutput SFNode field metadata.
    
    Specified by:
    
    setMetadata in interface X3DChildNode
    
    Specified by:
    
    setMetadata in interface X3DGroupingNode
    
    Specified by:
    
    setMetadata in interface X3DNode
    
    Specified by:
    
    setMetadata in interface X3DSensorNode
    
    Parameters:
    
    newValue - is new value for the metadata field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    
    See Also:
    
    X3D Scene Authoring Hints: Metadata Nodes
  - getProxy
```
X3DChildNode getProxy()
```
    Provide X3DChildNode instance (using a properly typed node) from initializeOnly SFNode field proxy.
    
    Tooltip: [X3DChildNode] The proxy node is used as a substitute for Collision children during collision detection, simplifying collision-intersection computations.
    - Hint: The proxy node is used strictly for collision detection and is not drawn.
    - Warning: the proxy node must have containerField='proxy' or it is simply treated like other children nodes.
    - Warning: insert a Shape node before adding geometry or Appearance.
    Returns:
    
    value of proxy field
  - setProxy
```
Collision setProxy(X3DChildNode newValue)
```
    Assign X3DChildNode instance (using a properly typed node) to initializeOnly SFNode field proxy.
    
    Tooltip: [X3DChildNode] The proxy node is used as a substitute for Collision children during collision detection, simplifying collision-intersection computations. Hint: The proxy node is used strictly for collision detection and is not drawn. Warning: the proxy node must have containerField='proxy' or it is simply treated like other children nodes. Warning: insert a Shape node before adding geometry or Appearance.
    
    Parameters:
    
    newValue - is new value for the proxy field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
  - setDEF
```
Collision setDEF(java.lang.String newValue)
```
    Assign String value to inputOutput SFString field named DEF.
    
    Tooltip: DEF defines a unique ID name for this node, referenceable by other nodes. Hint: descriptive DEF names improve clarity and help document a model. Hint: well-defined names can simplify design and debugging through improved author understanding. Hint: X3D Scene Authoring Hints, Naming Conventions http://www.web3d.org/x3d/content/examples/X3dSceneAuthoringHints.html#NamingConventions
    
    Note that setting the DEF value clears the USE value.
    
    Specified by:
    
    setDEF in interface X3DChildNode
    
    Specified by:
    
    setDEF in interface X3DGroupingNode
    
    Specified by:
    
    setDEF in interface X3DNode
    
    Specified by:
    
    setDEF in interface X3DSensorNode
    
    Parameters:
    
    newValue - is new value for the DEF field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
  - setUSE
```
Collision setUSE(java.lang.String newValue)
```
    Assign String value to inputOutput SFString field named USE.
    
    Tooltip: USE means reuse an already DEF-ed node ID, excluding all child nodes and all other attributes (except for containerField, which can have a different value). Hint: USE references to previously defined DEF geometry (instead of duplicating nodes) can improve performance. Warning: do NOT include any child nodes, a DEF attribute, or any other attribute values (except for containerField) when defining a USE attribute. Warning: each USE value must match a corresponding DEF value that is defined earlier in the scene.
    
    Note: each USE node is still an independent object, with the USE value matching the DEF value in the preceding object.
    
    Warning: invoking the setUSE() method on this node resets all other fields to their default values (except for containerField) and also releases all child nodes.
    
    Warning: no other operations can be performed to modify a USE node other than setting an alternate containerField value.
    
    Specified by:
    
    setUSE in interface X3DChildNode
    
    Specified by:
    
    setUSE in interface X3DGroupingNode
    
    Specified by:
    
    setUSE in interface X3DNode
    
    Specified by:
    
    setUSE in interface X3DSensorNode
    
    Parameters:
    
    newValue - is new value for the USE field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
  - setCssClass
```
Collision setCssClass(java.lang.String newValue)
```
    Assign String value to inputOutput SFString field named class.
    
    Tooltip: The class attribute is a space-separated list of classes, reserved for use by CSS cascading stylesheets. Warning: currently the class attribute is only supported in XML encoding of X3D scenes. Hint: W3C Cascading Style Sheets https://www.w3.org/Style/CSS
    
    Specified by:
    
    setCssClass in interface X3DChildNode
    
    Specified by:
    
    setCssClass in interface X3DGroupingNode
    
    Specified by:
    
    setCssClass in interface X3DNode
    
    Specified by:
    
    setCssClass in interface X3DSensorNode
    
    Parameters:
    
    newValue - is new value for the class field.
    
    Returns:
    
    Collision - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).

Interface Collision

Method Summary

Method Detail

getBboxCenter

setBboxCenter

getBboxSize

setBboxSize

getChildren

setChildren

addChildren

setChildren

getCollideTime

getEnabled

setEnabled

getIsActive

getMetadata

setMetadata

getProxy

setProxy

setDEF

setUSE

setCssClass