Castle Game Engine: X3DNodes: Class TGeoElevationGridNode

# Class TGeoElevationGridNode
Description | Hierarchy | Fields | Methods | Properties
## Unit X3DNodes ## Declaration `type TGeoElevationGridNode = class(TAbstractX3DGeometryNode)` ## Description no description available, TAbstractX3DGeometryNode description follows no description available, TAbstractGeometryNode description follows Geometry nodes are the only nodes that produces some visible results during rendering. Much of the VRML language is just a method of describing properties how geometry nodes are displayed (materials, transformations, lighting). A few things that make geometry node special : Only geometry nodes may have [Local]BoundingBox. Only geometry nodes define something visible "in usual way" during rendering (Some other nodes in VRML / X3D are visible but in an unusual way, like Background and Fog. These nodes must be rendered in a special way — they are not affected in any usual way by the current transformation matrix etc.) Geometry nodes are never "grouping nodes", in particular there's never a geometry node that is (direct or indirect) child of another geometry node. So there's no need to be concerned whether geometry nodes' children are included in things like [Local]BoundingBox or Triangles/VerticesCount. Geometry nodes don't affect anything in graph traverse state. (This is important mostly for VRML 1.0, since in newer VRML / X3D "graph traverse state" is not that important.) For X3D, this descends from TAbstractNode, and TAbstractX3DGeometryNode descends from us. This way in X3D TAbstractX3DGeometryNode descends from this, and also X3D hierarchy is preserved (X3DGeometryNode must descend from X3DNode). ## Hierarchy TPersistent TNonRefCountedInterfacedPersistent TX3DFileItem TX3DNode TAbstractNode TAbstractGeometryNode TAbstractX3DGeometryNode TGeoElevationGridNode ## Overview ### Methods
| `procedure CreateNode; override;`
| `class function ClassNodeTypeName: string; override;`
| `class function URNMatching(const URN: string): 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;`
### Properties
| `property EventSet_height: TMFDoubleEvent read FEventSet_height;`
| `property FdColor: TSFNode read FFdColor;`
| `property FdNormal: TSFNode read FFdNormal;`
| `property FdTexCoord: TSFNode read FFdTexCoord;`
| `property FdYScale: TSFFloat read FFdYScale;`
| `property FdCcw: TSFBool read FFdCcw;`
| `property FdColorPerVertex: TSFBool read FFdColorPerVertex;`
| `property FdCreaseAngle: TSFDouble read FFdCreaseAngle;`
| `property FdGeoGridOrigin: TSFVec3d read FFdGeoGridOrigin;`
| `property FdGeoOrigin: TSFNode read FFdGeoOrigin;`
| `property FdGeoSystem: TMFString read FFdGeoSystem;`
| `property FdHeight: TMFDouble read FFdHeight;`
| `property FdNormalPerVertex: TSFBool read FFdNormalPerVertex;`
| `property FdSolid: TSFBool read FFdSolid;`
| `property FdXDimension: TSFInt32 read FFdXDimension;`
| `property FdXSpacing: TSFDouble read FFdXSpacing;`
| `property FdZDimension: TSFInt32 read FFdZDimension;`
| `property FdZSpacing: TSFDouble read FFdZSpacing;`
## Description ### Methods
| `procedure CreateNode; override;`
| `class function ClassNodeTypeName: string; override;`
| `class function URNMatching(const URN: string): 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;`
### Properties
| `property EventSet_height: TMFDoubleEvent read FEventSet_height;`
| `property FdColor: TSFNode read FFdColor;`
| `property FdNormal: TSFNode read FFdNormal;`
| `property FdTexCoord: TSFNode read FFdTexCoord;`
| `property FdYScale: TSFFloat read FFdYScale;`
| `property FdCcw: TSFBool read FFdCcw;`
| `property FdColorPerVertex: TSFBool read FFdColorPerVertex;`
| `property FdCreaseAngle: TSFDouble read FFdCreaseAngle;`
| `property FdGeoGridOrigin: TSFVec3d read FFdGeoGridOrigin;`
| `property FdGeoOrigin: TSFNode read FFdGeoOrigin;`
| `property FdGeoSystem: TMFString read FFdGeoSystem;`
| `property FdHeight: TMFDouble read FFdHeight;`
| `property FdNormalPerVertex: TSFBool read FFdNormalPerVertex;`
| `property FdSolid: TSFBool read FFdSolid;`
| `property FdXDimension: TSFInt32 read FFdXDimension;`
| `property FdXSpacing: TSFDouble read FFdXSpacing;`
| `property FdZDimension: TSFInt32 read FFdZDimension;`
| `property FdZSpacing: TSFDouble read FFdZSpacing;`
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