Class TNodesManager
Unit
Declaration
type TNodesManager = class(TObject)
Description
Manages X3D non-abstract node classes, that can be used in X3D files. Use only through a singleton NodesManager.
Hierarchy
- TObject
- TNodesManager
Overview
Methods
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constructor Create; |
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destructor Destroy; override; |
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procedure RegisterNodeClass(NodeClass: TX3DNodeClass); |
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procedure RegisterNodeClasses(const NodeClasses: array of TX3DNodeClass); |
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procedure UnRegisterNodeClass(NodeClass: TX3DNodeClass; ErrorIfNotRegistered: boolean = true); |
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function X3DTypeToClass(const AX3DType: string; const Version: TX3DVersion): TX3DNodeClass; |
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function URNToClass(const URN: string; const Version: TX3DVersion): TX3DNodeClass; |
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function RegisteredCount: Cardinal; |
Properties
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property Registered [Index: Integer]: TX3DNodeClass read GetRegistered; |
Description
Methods
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constructor Create; |
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This item has no description. | |
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destructor Destroy; override; |
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This item has no description. | |
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procedure RegisterNodeClass(NodeClass: TX3DNodeClass); |
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Make the given node class known to the parser and other routines. We associate the node class with it's TX3DNode.ClassX3DType (make sure it's not empty). It is OK to register two different node classes with the same node. For example, VRML 1.0 TConeNode_1 class and VRML 2.0/X3D TConeNode_2 class both have a name 'Cone' (and will be correctly chosen during parsing). But you cannot register two times the same NodeClass. | |
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procedure RegisterNodeClasses(const NodeClasses: array of TX3DNodeClass); |
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This item has no description. | |
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procedure UnRegisterNodeClass(NodeClass: TX3DNodeClass; ErrorIfNotRegistered: boolean = true); |
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Unregisters given node class, removing it from our table. Exceptions raised
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function X3DTypeToClass(const AX3DType: string; const Version: TX3DVersion): TX3DNodeClass; |
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Return node class for a given name. This method is the main purpose of TNodesManager: to map node names into node classes. Searches in nodes registered by RegisterNodeClass and such. During searching, looks not only for matching node name, but also at matching VRML/X3D version, checking Returns | |
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function URNToClass(const URN: string; const Version: TX3DVersion): TX3DNodeClass; |
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Return class that matches given URL. This is useful for EXTERNROTOs. Checks also | |
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function RegisteredCount: Cardinal; |
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This item has no description. | |
Properties
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property Registered [Index: Integer]: TX3DNodeClass read GetRegistered; |
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Enumerate all registered classes, from Registered[0] to Registered[RegisteredCount - 1]. | |
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