net.opengis.gml
Class SphereType

java.lang.Object
  net.opengis.gml.AbstractSurfacePatchType
      net.opengis.gml.AbstractParametricCurveSurfaceType
          net.opengis.gml.AbstractGriddedSurfaceType
              net.opengis.gml.SphereType

public class SphereType
extends AbstractGriddedSurfaceType

A sphere is a gridded surface given as a family of circles whose positions vary linearly along the axis of the sphere, and whise radius varies in proportions to the cosine function of the central angle. The horizontal circles resemble lines of constant latitude, and the vertical arcs resemble lines of constant longitude. NOTE! If the control points are sorted in terms of increasing longitude, and increasing latitude, the upNormal of a sphere is the outward normal. EXAMPLE If we take a gridded set of latitudes and longitudes in degrees,(u,v) such as (-90,-180) (-90,-90) (-90,0) (-90, 90) (-90, 180) (-45,-180) (-45,-90) (-45,0) (-45, 90) (-45, 180) ( 0,-180) ( 0,-90) ( 0,0) ( 0, 90) ( 0, 180) ( 45,-180) ( 45,-90) ( 45,0) ( 45, -90) ( 45, 180) ( 90,-180) ( 90,-90) ( 90,0) ( 90, -90) ( 90, 180) And map these points to 3D using the usual equations (where R is the radius of the required sphere). z = R sin u x = (R cos u)(sin v) y = (R cos u)(cos v) We have a sphere of Radius R, centred at (0,0), as a gridded surface. Notice that the entire first row and the entire last row of the control points map to a single point in each 3D Euclidean space, North and South poles respectively, and that each horizontal curve closes back on itself forming a geometric cycle. This gives us a metrically bounded (of finite size), topologically unbounded (not having a boundary, a cycle) surface.

Classe Java pour SphereType complex type.

Le fragment de schéma suivant indique le contenu attendu figurant dans cette classe.

 <complexType name="SphereType">
   <complexContent>
     <extension base="{http://www.opengis.net/gml}AbstractGriddedSurfaceType">
       <attribute name="horizontalCurveType" type="{http://www.opengis.net/gml}CurveInterpolationType" fixed="circularArc3Points" />
       <attribute name="verticalCurveType" type="{http://www.opengis.net/gml}CurveInterpolationType" fixed="circularArc3Points" />
     </extension>
   </complexContent>
 </complexType>
 

Nested Class Summary

Nested classes/interfaces inherited from class net.opengis.gml.AbstractGriddedSurfaceType

AbstractGriddedSurfaceType.Row

Field Summary

static CurveInterpolationType	HORIZONTAL_CURVE_TYPE
static CurveInterpolationType	VERTICAL_CURVE_TYPE

Fields inherited from class net.opengis.gml.AbstractGriddedSurfaceType

columns, row, rows

Constructor Summary

SphereType()

Method Summary

Methods inherited from class net.opengis.gml.AbstractGriddedSurfaceType

getColumns, getRow, getRows, isSetColumns, isSetRow, isSetRows, setColumns, setRows, unsetRow

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HORIZONTAL_CURVE_TYPE

public static final CurveInterpolationType HORIZONTAL_CURVE_TYPE

VERTICAL_CURVE_TYPE

public static final CurveInterpolationType VERTICAL_CURVE_TYPE

Constructor Detail

SphereType

public SphereType()