Class TElevationGridNode

Unit

X3DNodes

Declaration

type TElevationGridNode = class(TAbstractGeometryNode)

Description

Uniform rectangular grid of varying height above the Y=0 plane, aka "height map".

Hierarchy

• TObject
• TPersistent
• TX3DFileItem
• TX3DNode
• TAbstractNode
• TAbstractGeometryNode
• TElevationGridNode

Overview

Methods

	constructor Create(const AX3DName: String = ''; const ABaseUrl: String = ''); override;
	function IsNotEmpty: boolean;
	function ColorField: TSFNode; override;
	function InternalFogCoord: TMFFloat; override;
	function AttribField: TMFNode; override;
	function SolidField: TSFBool; override;
	function FieldSetByEvent(const Event: TX3DEvent): TX3DField; override;
	function Proxy(var State: TX3DGraphTraverseState; const OverTriangulate: boolean): TAbstractGeometryNode; override;
	function ProxyUsesOverTriangulate: boolean; override;
	function LocalBoundingBox(State: TX3DGraphTraverseState; ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;
	function VerticesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean; ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
	function TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean; ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;
	procedure CreateNode; override;
	class function ClassX3DType: string; override;
	procedure SetAttrib(const Value: array of TAbstractVertexAttributeNode);
	procedure SetHeight(const Value: array of Single); overload;
	procedure SetHeight(const Value: TSingleList); overload;

Properties

	property EventSet_height: TMFFloatEvent read FEventSet_height;
	property FdAttrib: TMFNode read FFdAttrib;
	property FdColor: TSFNode read FFdColor;
	property Color: TAbstractColorNode read GetColor write SetColor;
	property FdFogCoord: TSFNode read FFdFogCoord;
	property FogCoord: TFogCoordinateNode read GetFogCoord write SetFogCoord;
	property FdNormal: TSFNode read FFdNormal;
	property Normal: TAbstractNormalNode read GetNormal write SetNormal;
	property FdTexCoord: TSFNode read FFdTexCoord;
	property TexCoord: TAbstractTextureCoordinateNode read GetTexCoord write SetTexCoord;
	property FdCcw: TSFBool read FFdCcw;
	property Ccw: Boolean read GetCcw write SetCcw;
	property FdColorPerVertex: TSFBool read FFdColorPerVertex;
	property ColorPerVertex: Boolean read GetColorPerVertex write SetColorPerVertex;
	property FdCreaseAngle: TSFFloat read FFdCreaseAngle;
	property CreaseAngle: Single read GetCreaseAngle write SetCreaseAngle;
	property FdHeight: TMFFloat read FFdHeight;
	property FdNormalPerVertex: TSFBool read FFdNormalPerVertex;
	property NormalPerVertex: Boolean read GetNormalPerVertex write SetNormalPerVertex;
	property FdSolid: TSFBool read FFdSolid;
	property FdXDimension: TSFInt32 read FFdXDimension;
	property XDimension: Integer read GetXDimension write SetXDimension;
	property FdXSpacing: TSFFloat read FFdXSpacing;
	property XSpacing: Single read GetXSpacing write SetXSpacing;
	property FdZDimension: TSFInt32 read FFdZDimension;
	property ZDimension: Integer read GetZDimension write SetZDimension;
	property FdZSpacing: TSFFloat read FFdZSpacing;
	property ZSpacing: Single read GetZSpacing write SetZSpacing;

Description

Methods

	constructor Create(const AX3DName: String = ''; const ABaseUrl: String = ''); override;

	function IsNotEmpty: boolean;
This checks whether xDimension and zDimension are >= 2, xSpacing and zSpacing are > 0 and height has at least the required number of values. If this returns False then it is understood that ElevationGrid is not rendered, doesn't have any vertices/triangles etc.

	function ColorField: TSFNode; override;

	function InternalFogCoord: TMFFloat; override;

	function AttribField: TMFNode; override;

	function SolidField: TSFBool; override;

	function FieldSetByEvent(const Event: TX3DEvent): TX3DField; override;

	function Proxy(var State: TX3DGraphTraverseState; const OverTriangulate: boolean): TAbstractGeometryNode; override;

	function ProxyUsesOverTriangulate: boolean; override;

	function LocalBoundingBox(State: TX3DGraphTraverseState; ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): TBox3D; override;

	function VerticesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean; ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;

	function TrianglesCount(State: TX3DGraphTraverseState; OverTriangulate: boolean; ProxyGeometry: TAbstractGeometryNode; ProxyState: TX3DGraphTraverseState): Cardinal; override;

	procedure CreateNode; override;

	class function ClassX3DType: string; override;

	procedure SetAttrib(const Value: array of TAbstractVertexAttributeNode);

	procedure SetHeight(const Value: array of Single); overload;

	procedure SetHeight(const Value: TSingleList); overload;

Properties

	property EventSet_height: TMFFloatEvent read FEventSet_height;

	property FdAttrib: TMFNode read FFdAttrib;

	property FdColor: TSFNode read FFdColor;

	property Color: TAbstractColorNode read GetColor write SetColor;

	property FdFogCoord: TSFNode read FFdFogCoord;

	property FogCoord: TFogCoordinateNode read GetFogCoord write SetFogCoord;

	property FdNormal: TSFNode read FFdNormal;

	property Normal: TAbstractNormalNode read GetNormal write SetNormal;

	property FdTexCoord: TSFNode read FFdTexCoord;

	property TexCoord: TAbstractTextureCoordinateNode read GetTexCoord write SetTexCoord;

	property FdCcw: TSFBool read FFdCcw;

	property Ccw: Boolean read GetCcw write SetCcw;

	property FdColorPerVertex: TSFBool read FFdColorPerVertex;

	property ColorPerVertex: Boolean read GetColorPerVertex write SetColorPerVertex;

	property FdCreaseAngle: TSFFloat read FFdCreaseAngle;

	property CreaseAngle: Single read GetCreaseAngle write SetCreaseAngle;

	property FdHeight: TMFFloat read FFdHeight;

	property FdNormalPerVertex: TSFBool read FFdNormalPerVertex;

	property NormalPerVertex: Boolean read GetNormalPerVertex write SetNormalPerVertex;

	property FdSolid: TSFBool read FFdSolid;

	property FdXDimension: TSFInt32 read FFdXDimension;

	property XDimension: Integer read GetXDimension write SetXDimension;

	property FdXSpacing: TSFFloat read FFdXSpacing;

	property XSpacing: Single read GetXSpacing write SetXSpacing;

	property FdZDimension: TSFInt32 read FFdZDimension;

	property ZDimension: Integer read GetZDimension write SetZDimension;

	property FdZSpacing: TSFFloat read FFdZSpacing;

	property ZSpacing: Single read GetZSpacing write SetZSpacing;

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