Package xj3d.filter.filters

Class GlobalBoundsFilter

java.lang.Object

xj3d.filter.AbstractFilter

xj3d.filter.BaseFilter

xj3d.filter.node.EncodedBaseFilter

xj3d.filter.filters.GlobalBoundsFilter

All Implemented Interfaces:

BinaryContentHandler, ContentHandler, ProtoHandler, RouteHandler, ScriptHandler, StringContentHandler

public class GlobalBoundsFilter
extends EncodedBaseFilter

Processes the world and calculates the global bounds of the entire world.

Assumes that the FlattenTransform filter is run before this and has squashed all the objects down to single shape nodes that are at the file root. Works on the coordinates of the geometry, not any explicit bbox definitions.

Output is through the message reporter and generates it in the order center x, center y, center z, size x, size y, size z, where size is the total length along that axis, based on the center. Filter Options

None.

Version:

$Revision: 1.3 $

Author:

Justin Couch

Field Summary

Fields

Modifier and Type	Field	Description
protected float[]	maxBound	max bounding point of the object in the order x,y,z
protected float[]	minBound	min bounding point of the object in the order x,y,z

Fields inherited from class xj3d.filter.node.EncodedBaseFilter

encMap, encodeNodes, encodeRoutes, encStack, factory, scene

Fields inherited from class xj3d.filter.BaseFilter

insideInvalidField, sceneMarker, suppressCalls

Fields inherited from class xj3d.filter.AbstractFilter

contentHandler, documentLocator, errorHandler, fieldHandler, fieldReader, fieldStack, lastErrorCode, majorVersion, minorVersion, nodeStack, parsingType, protoHandler, routeHandler, scriptHandler

Constructor Summary

Constructors

Constructor	Description
GlobalBoundsFilter()	Recenters the geometry

Method Summary

Modifier and Type	Method	Description
void	endDocument()	Declaration of the end of the document.
void	endNode()	Notification of the end of a node declaration.
void	startDocument(String uri, String url, String encoding, String type, String version, String comment)	Declaration of the start of the document.
void	startNode(String name, String defName)	Notification of the start of a node.

Methods inherited from class xj3d.filter.node.EncodedBaseFilter

encode, endField, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, fieldValue, routeDecl, setDebug, useDecl

Methods inherited from class xj3d.filter.BaseFilter

componentDecl, endExternProtoDecl, endProtoBody, endProtoDecl, endScriptDecl, exportDecl, externProtoURI, getContentHandler, getErrorReporter, getLastErrorCode, getProtoHandler, getRouteHandler, getScriptHandler, importDecl, metaDecl, profileDecl, protoFieldDecl, protoIsDecl, scriptFieldDecl, setArguments, setContentHandler, setDocumentLocator, setErrorReporter, setProtoHandler, setRouteHandler, setScriptHandler, startExternProtoDecl, startField, startProtoBody, startProtoDecl, startScriptDecl, suppressCalls

Methods inherited from class xj3d.filter.AbstractFilter

setParsingType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

minBound

protected float[] minBound

min bounding point of the object in the order x,y,z

maxBound

protected float[] maxBound

max bounding point of the object in the order x,y,z

Constructor Details

GlobalBoundsFilter

public GlobalBoundsFilter()

Recenters the geometry

Method Details

startDocument

public void startDocument(String uri,
 String url,
 String encoding,
 String type,
 String version,
 String comment)
                   throws SAVException,
VRMLException

Declaration of the start of the document. The parameters are all of the values that are declared on the header line of the file after the # start. The type string contains the representation of the first few characters of the file after the #. This allows us to work out if it is VRML97 or the later X3D spec.

Version numbers change from VRML97 to X3D and aren't logical. In the first, it is #VRML V2.0 and the second is #X3D V1.0 even though this second header represents a later spec.

Specified by:

startDocument in interface ContentHandler

Overrides:

startDocument in class EncodedBaseFilter

Parameters:

uri - The URI of the file.

url - The base URL of the file for resolving relative URIs contained in the file

encoding - The encoding of this document - utf8 or binary

type - The bytes of the first part of the file header

version - The full VRML version string of this document

comment - Any trailing text on this line. If there is none, this is null.

Throws:

SAVException - This call is taken at the wrong time in the structure of the document.

VRMLException - This call is taken at the wrong time in the structure of the document.

endDocument

public void endDocument()
                 throws SAVException,
VRMLException

Declaration of the end of the document. There will be no further parsing and hence events after this.

Specified by:

endDocument in interface ContentHandler

Overrides:

endDocument in class EncodedBaseFilter

Throws:

SAVException - This call is taken at the wrong time in the structure of the document.

VRMLException - This call is taken at the wrong time in the structure of the document.

startNode

public void startNode(String name,
 String defName)
               throws SAVException,
VRMLException

Notification of the start of a node. This is the opening statement of a node and it's DEF name. USE declarations are handled in a separate method.

Specified by:

startNode in interface ContentHandler

Overrides:

startNode in class EncodedBaseFilter

Parameters:

name - The name of the node that we are about to parse

defName - The string associated with the DEF name. Null if not given for this node.

Throws:

SAVException - This call is taken at the wrong time in the structure of the document.

VRMLException - This call is taken at the wrong time in the structure of the document.

endNode

public void endNode()
             throws SAVException,
VRMLException

Notification of the end of a node declaration.

Specified by:

endNode in interface ContentHandler

Overrides:

endNode in class EncodedBaseFilter

Throws:

SAVException - This call is taken at the wrong time in the structure of the document.

VRMLException - This call is taken at the wrong time in the structure of the document.