public class SoVRMLGeoElevationGrid extends SoVRMLElevationGrid
SoVRMLGeoElevationGridallows to create terrain models for local or large areas (automatically introduces correct degree of earth curvature).
This section describes the expected behavior of the node in a conforming X3D / VRML97 browser application. In some cases, the application is responsible for implementing portions of the expected behavior. Open Inventor viewer classes and IVF classes implement some of the application behaviors.
This section may reference portions of the X3D specification that are not present in this help file. The complete X3D spec is available at
SoVRMLGeoElevationGrid 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 fields
normalPerVertex all have the same meaning as for ElevationGrid (see 13.3.4 ElevationGrid). The
creaseAngle fields are described in 11.2.3 Common geometry fields. The
geoOrigin field is used to specify a local coordinate frame for extended precision as described in 25.2.5 Dealing with high-precision coordinates. 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.
The yScale value can be used to produce a vertical exaggeration of the data when it is displayed.
ccw, creaseAngle, solid
color, colorPerVertex, height, normal, normalPerVertex, texCoord, xDimension, xSpacing, zDimension, zSpacing
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
Generated on January 29, 2020, Copyright © Thermo Fisher Scientific. All rights reserved. http://www.openinventor.com