Package net.opengis.gml311
Interface SphereType
- All Superinterfaces:
AbstractGriddedSurfaceType
,AbstractParametricCurveSurfaceType
,AbstractSurfacePatchType
,EObject
,Notifier
- All Known Implementing Classes:
SphereTypeImpl
A representation of the model object 'Sphere Type'.
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.
The following features are supported:
- See Also:
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Method Summary
Modifier and TypeMethodDescriptionReturns the value of the 'Horizontal Curve Type' attribute.Returns the value of the 'Vertical Curve Type' attribute.boolean
Returns whether the value of the 'Horizontal Curve Type
' attribute is set.boolean
Returns whether the value of the 'Vertical Curve Type
' attribute is set.void
Sets the value of the 'Horizontal Curve Type
' attribute.void
Sets the value of the 'Vertical Curve Type
' attribute.void
Unsets the value of the 'Horizontal Curve Type
' attribute.void
Unsets the value of the 'Vertical Curve Type
' attribute.Methods inherited from interface AbstractGriddedSurfaceType
getColumns, getRow, getRows, setColumns, setRows
Methods inherited from interface EObject
eAllContents, eClass, eContainer, eContainingFeature, eContainmentFeature, eContents, eCrossReferences, eGet, eGet, eInvoke, eIsProxy, eIsSet, eResource, eSet, eUnset
Methods inherited from interface Notifier
eAdapters, eDeliver, eNotify, eSetDeliver
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Method Details
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getHorizontalCurveType
CurveInterpolationType getHorizontalCurveType()Returns the value of the 'Horizontal Curve Type' attribute. The default value is"circularArc3Points"
. The literals are from the enumerationCurveInterpolationType
.If the meaning of the 'Horizontal Curve Type' attribute isn't clear, there really should be more of a description here...
- Returns:
- the value of the 'Horizontal Curve Type' attribute.
- See Also:
-
setHorizontalCurveType
Sets the value of the 'Horizontal Curve Type
' attribute.- Parameters:
value
- the new value of the 'Horizontal Curve Type' attribute.- See Also:
-
unsetHorizontalCurveType
void unsetHorizontalCurveType()Unsets the value of the 'Horizontal Curve Type
' attribute. -
isSetHorizontalCurveType
boolean isSetHorizontalCurveType()Returns whether the value of the 'Horizontal Curve Type
' attribute is set.- Returns:
- whether the value of the 'Horizontal Curve Type' attribute is set.
- See Also:
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getVerticalCurveType
CurveInterpolationType getVerticalCurveType()Returns the value of the 'Vertical Curve Type' attribute. The default value is"circularArc3Points"
. The literals are from the enumerationCurveInterpolationType
.If the meaning of the 'Vertical Curve Type' attribute isn't clear, there really should be more of a description here...
- Returns:
- the value of the 'Vertical Curve Type' attribute.
- See Also:
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setVerticalCurveType
Sets the value of the 'Vertical Curve Type
' attribute.- Parameters:
value
- the new value of the 'Vertical Curve Type' attribute.- See Also:
-
unsetVerticalCurveType
void unsetVerticalCurveType()Unsets the value of the 'Vertical Curve Type
' attribute. -
isSetVerticalCurveType
boolean isSetVerticalCurveType()Returns whether the value of the 'Vertical Curve Type
' attribute is set.- Returns:
- whether the value of the 'Vertical Curve Type' attribute is set.
- See Also:
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