Class TVisibilitySensorInstance

Unit

CastleShapes

Declaration

type TVisibilitySensorInstance = class(TShapeTree)

Description

Tree of shapes.

Although VRML/X3D model already provides the tree (graph of VRML/X3D nodes), it's a little too complicated to be used at each render call. It's especially true for VRML <= 1.0 (where properties may "leak out" from one node to the next), VRML/X3D >= 2.0 cleaned a lot here but still some work must be done when traversing (like accumulating transformations).

So we process VRML/X3D tree to this tree, which is much simpler with all the geometry nodes (TAbstractGeometryNode) along with their state (TX3DGraphTraverseState) as leafs (TShape).

Hierarchy

• TObject
• TShapeTree
• TVisibilitySensorInstance

Overview

Fields

	Box: TBox3D;
	Transform: TMatrix4;

Methods

	function EnumerateTextures(const Enumerate: TEnumerateShapeTexturesFunction): Pointer; override;
	function DebugInfo(const Indent: string = ''): string; override;

Properties

property Node: TVisibilitySensorNode read FNode write FNode;

Description

Fields

	Box: TBox3D;
Bounding box of this visibility sensor instance, already transformed to global VRML/X3D scene coordinates. That is, transformed by parent Transform and similar nodes.

	Transform: TMatrix4;

Methods

	function EnumerateTextures(const Enumerate: TEnumerateShapeTexturesFunction): Pointer; override;

	function DebugInfo(const Indent: string = ''): string; override;

Properties

	property Node: TVisibilitySensorNode read FNode write FNode;