public class SoGeoElevationGrid extends SoIndexedFaceSet
SoGeoElevationGridallows to create terrain models for local or large areas (automatically introduces correct degree of earth curvature).
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SoGeoElevationGrid node specifies a uniform grid of elevation values within some spatial reference frame. These are then transparently transformed into a geocentric, curved-earth representation. For example, this would allow a geographer to create a height field where all coordinates are specified in terms of latitude, longitude, and elevation. The
geoSystem field is used to define the spatial reference frame and is described in 25.2.3 Specifying a spatial reference frame. The
geoGridOrigin field specifies the geographic coordinate for the south-west corner (bottom-left) of the dataset. This value should be specified as described in 25.2.4 Specifying geospatial coordinates. The
height array contains
zDimension floating point values that represent elevation above the ellipsoid or the geoid, as appropriate. These values are given in row-major order from west to east, south to north. When the
geoSystem is "GD",
xSpacing refers to the number of degrees of longitude between adjacent height values and
zSpacing refers to the number of degrees of latitude between vertical height values. When the geoSystem is "UTM",
xSpacing refers to the number of eastings (meters) between adjacent height values and
zSpacing refers to the number of northings (meters) between vertical height values. EXAMPLE If xDimension = n and the grid spans d units horizontally, the xSpacing value should be set to: d / (n-1). The
yScale value can be used to produce a vertical exaggeration of the data when it is displayed. By default, this value is 1.0 (no exaggeration). If this value is set greater than 1.0, all heights will appear larger than actual.
|geoGridOrigin||0 0 0|
|Modifier and Type||Field and Description|
Specifies the geographic coordinate for the south-west corner (bottom-left) of the dataset.
Defines the spatial reference frame.
Number of X values in the grid.
Spacing between X values.
The yScale value can be used to produce a vertical exaggeration of the data when it is displayed.
Number of Z values in the grid.
Spacing between Z values.
coordIndex, materialIndex, normalIndex, textureCoordIndex
boundingBoxIgnoring, LINES, POINTS, POLYGONS, TEXT
|Constructor and Description|
getShapeType, isPrimitiveRestartAvailable, isPrimitiveRestartAvailable
affectsState, callback, copy, copy, distribute, doAction, getAlternateRep, getBoundingBox, getByName, getMatrix, getPrimitiveCount, getRenderUnitID, GLRender, GLRenderBelowPath, GLRenderInPath, GLRenderOffPath, grabEventsCleanup, grabEventsSetup, handleEvent, isBoundingBoxIgnoring, isOverride, pick, rayPick, search, setOverride, touch, write
copyFieldValues, copyFieldValues, enableNotify, fieldsAreEqual, get, getAllFields, getEventIn, getEventOut, getField, getFieldName, hasDefaultValues, isNotifyEnabled, set, setToDefaults
dispose, getEXTERNPROTO, getName, getPROTO, isDisposable, isSynchronizable, setName, setSynchronizable
getAddress, getNativeResourceHandle, startInternalThreads, stopInternalThreads
public final SoSFFloat yScale
public final SoSFVec3f geoGridOrigin
public final SoMFString geoSystem
public final SoMFFloat height
public final SoSFInt32 xDimension
public final SoSFFloat xSpacing
geoSystemis "GD", xSpacing refers to the number of degrees of longitude between adjacent height values. When the geoSystem is "UTM", xSpacing refers to the number of eastings (meters) between adjacent height values.
public final SoSFInt32 zDimension
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