GeoElevationGrid
GeoElevationGrid is a geometry node, defining a a rectangular height field above a curved geographic surface using geographic coordinates. GeoElevationGrid can contain GeoOrigin, Color, Normal and TextureCoordinate nodes. Hint: insert a Shape node before adding geometry or Appearance.
Inheritance
Code
XML encoding
<GeoElevationGrid zSpacing='1.0' zDimension='0' yScale='1' xDimension='0' xSpacing='1.0' solid='TRUE' normalPerVertex='TRUE' creaseAngle='0' colorPerVertex='TRUE' ccw='TRUE' height='0 0' geoGridOrigin='0 0 0' geoSystem=''GD','WE'' logFeature='' optimizationMode='auto' cacheMode='auto' invalidateVolume='FALSE' normalUpdateMode='nice' multiResolutionLevel='1' lit='TRUE' resolution='1' />
Classic encoding
GeoElevationGrid { zSpacing 1.0 zDimension 0 yScale 1 xDimension 0 xSpacing 1.0 solid TRUE normalPerVertex TRUE creaseAngle 0 colorPerVertex TRUE ccw TRUE height [0 0] geoGridOrigin 0 0 0 geoSystem ["'GD','WE'"] logFeature [""] optimizationMode ["auto"] cacheMode "auto" invalidateVolume FALSE normalUpdateMode "nice" multiResolutionLevel 1 lit TRUE resolution 1 }
Interface
Filter: X3D only | Avalon only | All
id | Name | DataType | PartType | Default | ValueType | Description |
---|---|---|---|---|---|---|
cacheMode | SFString | initializeOnly | auto | auto; dlist; vbo; off | controls the creation of geo cache objects; auto is vbo or dlist for dynamic objects | |
ccw | SFBool | initializeOnly | TRUE | ccw = counterclockwise: ordering of vertex coordinates orientation. Hint: ccw false can reverse solid (backface culling) and normal-vector orientation. | ||
colorPerVertex | SFBool | initializeOnly | TRUE | TRUE: Color node is applied per vertex; FALSE: Color node is applied per quadrilateral | ||
creaseAngle | SFDouble | initializeOnly | 0 | [0, inf) | CreaseAngle defines the angle (in radians) for determining whether adjacent polygons are drawn with sharp edges or smooth shading. If angle between normals of two adjacent polygons is less than creaseAngle, smooth shading is rendered across the shared line segment. Hint: creaseAngle=0 means render all edges sharply, creaseAngle=3.14 means render all edges smoothly. | |
geoGridOrigin | SFVec3d | initializeOnly | 0 0 0 | Geographic coordinate for southwest (lower-left) corner of height dataset. | ||
geoOrigin | SFNode | initializeOnly | GeoOrigin | The geoOrigin field is used to specify a local coordinate frame for extended precision. | ||
geoSystem | MFString | initializeOnly | 'GD','WE' | Defines the geographic coordinate system that will be used for the geospatial coordinates in that node. | ||
lit | SFBool | initializeOnly | TRUE | Specifies whether the Shape is lit. | ||
multiResolutionLevel | SFInt32 | initializeOnly | 1 | resolution level in progressive mesh | ||
normalPerVertex | SFBool | initializeOnly | TRUE | TRUE: Normal node is applied per vertex; FALSE: Normal node is applied per quadrilateral | ||
normalUpdateMode | SFString | initializeOnly | nice | none; fast; nice | force update of normals; nice update is with creaseAngle, fast is without | |
solid | SFBool | initializeOnly | TRUE | Specifies whether to draw only one side or both sides of polygons. Warning: default value true can completely hide geometry if viewed from wrong side. TRUE: draw only one side of polygons (backface culling on); FALSE: draw both sides of polygons (backface culling off) | ||
xDimension | SFInt32 | initializeOnly | 0 | Number of elements of the grid height array in the east-west X direction. | ||
xSpacing | SFDouble | initializeOnly | 1.0 | Distance between grid-array vertices along east-west X direction. When geoSystem is GD, xSpacing is number of degrees of longitude. When geoSystem is UTM, xSpacing is number of eastings (meters). | ||
zDimension | SFInt32 | initializeOnly | 0 | Number of elements of the grid height array in the north-south Z direction. | ||
zSpacing | SFDouble | initializeOnly | 1.0 | Distance between grid-array vertices along north-south Z direction. When geoSystem is GDC, zSpacing is number of degrees of latitude. When geoSystem is UTM, zSpacing is number of northings (meters). | ||
color | SFNode | inputOutput | Color | Specifies per-vertex or per-quadrilateral colours for the ElevationGrid node depending on the value of colorPerVertex. If the color field is NULL, the node is rendered with the overall attributes of the Shape node. | ||
height | MFDouble | inputOutput | 0 0 | Contains xDimension rows * zDimension columns floating-point values for elevation above ellipsoid values are in row-major order from west to east, south to north geoGridOrigin is in southwest (lower-left) corner of height dataset. | ||
invalidateVolume | SFBool | inputOutput | FALSE | set volume invalid | ||
logFeature | MFString | inputOutput | state, child, parent, route, eventIn, eventOut | controls the logging of changes, state: log state changes (e.g. live), child: log child add/remove, parent: log parent add/remove, route: log route add/remove; eventIn: log receiving of events, eventOut: log sending of events: guiView, runtime system should create node-view, guiEdit: runtime system should create node-editeverything: log everything | ||
metadata | SFNode | inputOutput | MetadataObject | container for payload metadata inside MetadataSet element | ||
normal | SFNode | inputOutput | Normal | Specifies per-vertex or per-quadrilateral normals for the ElevationGrid node. If the normal field is NULL, the browser automatically generates normals. | ||
optimizationMode | MFString | inputOutput | auto | auto; all, none, sharedVertex; stripFan; vertexResort; reduceIndexSize; singleIndex | optimization mode settings; used leading +/- to switch modes on and off | |
resolution | SFFloat | inputOutput | 1 | factor for subdivision of mesh | ||
texCoord | SFNode | inputOutput | TextureCoordinateBase | Specifies per-vertex texture coordinates for the ElevationGrid node. If texCoord is NULL, default texture coordinates are applied to the geometry. Default texture coordinates range from (0,0) at the first vertex to (1,1) at the last vertex. | ||
yScale | SFFloat | inputOutput | 1 | Vertical exaggeration of displayed data. |