Class TBillboardNode

Unit

X3DNodes

Declaration

type TBillboardNode = class(TAbstractX3DGroupingNode, ITransformNode)

Description

Grouping node that transforms the coordinate system of its children so that they always turn towards the viewer. The local Z axis of the children faces the camera, rotating around AxisOfRotation (it it is non-zero) or rotating freely in 3D (when AxisOfRotation is exactly zero).

Hierarchy

• TObject
• TPersistent
• TNonRefCountedInterfacedPersistent
• TX3DFileItem
• TX3DNode
• TAbstractNode
• TAbstractChildNode
• TAbstractGroupingNode
• TAbstractX3DGroupingNode
• TBillboardNode

Overview

Methods

	function DirectEnumerateActive(Func: TEnumerateChildrenFunction): Pointer; override;
	procedure ApplyTransform(var Transformation: TTransformation); override;
	procedure CreateNode; override;
	class function ClassX3DType: string; override;
	function TransformationChange: TNodeTransformationChange; override;

Properties

	property FdAxisOfRotation: TSFVec3f read FFdAxisOfRotation;
	property AxisOfRotation: TVector3 read GetAxisOfRotation write SetAxisOfRotation;

Description

Methods

	function DirectEnumerateActive(Func: TEnumerateChildrenFunction): Pointer; override;

	procedure ApplyTransform(var Transformation: TTransformation); override;

	procedure CreateNode; override;

	class function ClassX3DType: string; override;

	function TransformationChange: TNodeTransformationChange; override;

Properties

	property FdAxisOfRotation: TSFVec3f read FFdAxisOfRotation;

	property AxisOfRotation: TVector3 read GetAxisOfRotation write SetAxisOfRotation;
Axis around which the billboard rotates to face the camera. Can be zero to rotate freely.

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