org.opengis.geometry.primitive
Interface Ring

All Superinterfaces:
Complex, Composite, CompositeCurve, Geometry, OrientableCurve, OrientablePrimitive, Primitive, TransfiniteSet

@UML(identifier="GM_Ring",
     specification=ISO_19107)
public interface Ring
extends CompositeCurve

Represent a single connected component of a surface boundary. It consists of a number of references to orientable curves connected in a cycle (an object whose boundary is empty). A Ring is structurally similar to a composite curve in that the end point of each orientable curve in the sequence is the start point of the next orientable curve in the sequence. Since the sequence is circular, there is no exception to this rule. Each ring, like all boundaries is a cycle and each ring is simple.

Even though each Ring is simple, the boundary need not be simple. The easiest case of this is where one of the interior rings of a surface is tangent to its exterior ring. Implementations may enforce stronger restrictions on the interaction of boundary elements.

Since:
GeoAPI 1.0
Version:
ISO 19107
See Also:
SurfaceBoundary, Shell

Method Summary
 boolean isSimple()
          Always returns true since ring objects are simples.
 
Methods inherited from interface Composite
getGenerators
 
Methods inherited from interface Complex
getElements, getSubComplexes, getSuperComplexes, isMaximal
 
Methods inherited from interface OrientablePrimitive
getOrientation, getPrimitive
 
Methods inherited from interface Primitive
getComplexes, getComposite, getContainedPrimitives, getContainingPrimitives, getProxy
 
Methods inherited from interface Geometry
clone, distance, getBoundary, getBuffer, getCentroid, getClosure, getConvexHull, getCoordinateDimension, getCoordinateReferenceSystem, getDimension, getDistance, getEnvelope, getMaximalComplex, getMbRegion, getPrecision, getRepresentativePoint, isCycle, isMutable, toImmutable, transform, transform
 
Methods inherited from interface TransfiniteSet
contains, contains, difference, equals, intersection, intersects, symmetricDifference, union
 

Method Detail

isSimple

boolean isSimple()
Always returns true since ring objects are simples.

Specified by:
isSimple in interface Geometry
Returns:
Always true.
See Also:
Geometry.isCycle()


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