GEOS  3.3.3
Class Hierarchy
This inheritance list is sorted roughly, but not completely, alphabetically:
[detail level 1234]
oCgeos::index::strtree::AbstractSTRtreeBase class for STRtree and SIRtree
oCgeos::algorithm::AngleUtility functions for working with angles
oCgeos::index::bintree::BintreeAn BinTree (or "Binary Interval Tree") is a 1-dimensional version of a quadtree
oCgeos::index::strtree::BoundableA spatial object in an AbstractSTRtree
oCgeos::algorithm::BoundaryNodeRule
oCgeos::operation::buffer::BufferBuilderBuilds the buffer geometry for a given input geometry and precision model
oCgeos::operation::buffer::BufferInputLineSimplifierSimplifies a buffer input line to remove concavities with shallow depth
oCgeos::operation::buffer::BufferOpComputes the buffer of a geometry, for both positive and negative buffer distances
oCgeos::operation::buffer::BufferParametersContains the parameters which describe how a buffer should be constructed
oCgeos::operation::buffer::BufferSubgraphA connected subset of the graph of DirectedEdge and geomgraph::Node
oCgeos::operation::geounion::CascadedPolygonUnionProvides an efficient method of unioning a collection of Polygonal geometries. This algorithm is faster and likely more robust than the simple iterated approach of repeatedly unioning each polygon to a result geometry
oCgeos::operation::geounion::CascadedUnionProvides an efficient method of unioning a collection of Geometries
oCgeos::algorithm::CentralEndpointIntersectorComputes an approximate intersection of two line segments by taking the most central of the endpoints of the segments
oCgeos::algorithm::CentroidAreaComputes the centroid of an area geometry
oCgeos::algorithm::CGAlgorithmsSpecifies and implements various fundamental Computational Geometric algorithms. The algorithms supplied in this class are robust for double-precision floating point
oCgeos::precision::CommonBitsDetermines the maximum number of common most-significant bits in the mantissa of one or numbers
oCgeos::precision::CommonBitsOpProvides versions of Geometry spatial functions which use common bit removal to reduce the likelihood of robustness problems
oCgeos::precision::CommonBitsRemoverAllow computing and removing common mantissa bits from one or more Geometries
oCgeos::operation::valid::ConnectedInteriorTesterThis class tests that the interior of an area Geometry (Polygon or MultiPolygon) is connected
oCgeos::planargraph::algorithm::ConnectedSubgraphFinderFinds all connected Subgraphs of a PlanarGraph
oCgeos::operation::valid::ConsistentAreaTesterChecks that a geomgraph::GeometryGraph representing an area (a Polygon or MultiPolygon ) is consistent with the OGC-SFS semantics for area geometries
oCgeos::algorithm::ConvexHull
oCgeos::geom::CoordinateCoordinate is the lightweight class used to store coordinates
oCgeos::geom::CoordinateFilter
oCgeos::geom::CoordinateLessThenStrict weak ordering Functor for Coordinate
oCgeos::geom::CoordinateListA list of Coordinates, which may be set to prevent repeated coordinates from occuring in the list
oCgeos::geom::CoordinateSequenceThe internal representation of a list of coordinates inside a Geometry
oCgeos::geom::CoordinateSequenceFactoryA factory to create concrete instances of CoordinateSequences
oCgeos::geom::CoordinateSequenceFilter
oCgeos::geom::DimensionConstants representing the dimensions of a point, a curve and a surface
oCgeos::planargraph::DirectedEdgeStarA sorted collection of DirectedEdge which leave a Node in a PlanarGraph
oCgeos::algorithm::distance::DiscreteHausdorffDistanceAn algorithm for computing a distance metric which is an approximation to the Hausdorff Distance based on a discretization of the input Geometry
oCgeos::operation::distance::DistanceOpFind two points on two Geometrys which lie within a given distance, or else are the nearest points on the geometries (in which case this also provides the distance between the geometries)
oCgeos::algorithm::distance::DistanceToPoint
oCgeos::index::quadtree::DoubleBitsDoubleBits manipulates Double numbers by using bit manipulation and bit-field extraction
oCgeos::simplify::DouglasPeuckerLineSimplifierSimplifies a linestring (sequence of points) using the standard Douglas-Peucker algorithm
oCgeos::simplify::DouglasPeuckerSimplifierSimplifies a Geometry using the standard Douglas-Peucker algorithm
oCgeos::geomgraph::EdgeEndModels the end of an edge incident on a node
oCgeos::operation::relate::EdgeEndBuilderComputes the geomgraph::EdgeEnd objects which arise from a noded geomgraph::Edge
oCgeos::geomgraph::EdgeEndStarA EdgeEndStar is an ordered list of EdgeEnds around a node
oCgeos::geomgraph::EdgeIntersection
oCgeos::geomgraph::EdgeIntersectionList
oCgeos::geomgraph::EdgeList
oCgeos::geomgraph::EdgeNodingValidatorValidates that a collection of SegmentStrings is correctly noded
oCgeos::operation::polygonize::EdgeRingRepresents a ring of PolygonizeDirectedEdge which form a ring of a polygon. The ring may be either an outer shell or a hole
oCgeos::operation::overlay::EdgeSetNoderNodes a set of edges
oCgeos::operation::linemerge::EdgeStringA sequence of LineMergeDirectedEdge forming one of the lines that will be output by the line-merging process
oCgeos::precision::EnhancedPrecisionOpProvides versions of Geometry spatial functions which use enhanced precision techniques to reduce the likelihood of robustness problems
oCgeos::geom::EnvelopeAn Envelope defines a rectangulare region of the 2D coordinate plane
oCgeos::linearref::ExtractLineByLocation
oCgeos::noding::FastNodingValidatorValidates that a collection of SegmentStrings is correctly noded
oCgeos::noding::FastSegmentSetIntersectionFinderFinds if two sets of SegmentStringss intersect
oCgeos::operation::overlay::validate::FuzzyPointLocatorFinds the most likely Location of a point relative to the polygonal components of a geometry, using a tolerance value
oCgeos::util::GeometricShapeFactory
oCgeos::geom::GeometryBasic implementation of Geometry, constructed and destructed by GeometryFactory
oCgeos::geom::util::GeometryCombiner
oCgeos::geom::GeometryComponentFilter
oCgeos::geom::util::GeometryEditor
oCgeos::geom::util::GeometryEditorOperation
oCgeos::geom::util::GeometryExtracter
oCgeos::geom::GeometryFactorySupplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geometry objects
oCgeos::geom::GeometryFilterGeometry classes support the concept of applying a Geometry filter to the Geometry
oCgeos::operation::GeometryGraphOperationThe base class for operations that require GeometryGraph
oCgeos::geom::GeometryListManager of Geometry pointers. Owns the Geometries
oCgeos::operation::geounion::GeometryListHolderHelper class holding Geometries, part of which are held by reference others are held exclusively
oCgeos::operation::distance::GeometryLocationRepresents the location of a point on a Geometry
oCgeos::operation::overlay::snap::GeometrySnapperSnaps the vertices and segments of a Geometry to another Geometry's vertices
oCgeos::geom::util::GeometryTransformerA framework for processes which transform an input Geometry into an output Geometry, possibly changing its structure and type(s)
oCgeos::util::GEOSExceptionBase class for all GEOS exceptions
oCgeos::planargraph::GraphComponentThe base class for all graph component classes
oCgeos::algorithm::HCoordinateRepresents a homogeneous coordinate in a 2-D coordinate space
oCgeos::noding::snapround::HotPixelImplements a "hot pixel" as used in the Snap Rounding algorithm
oCgeos::operation::valid::IndexedNestedRingTesterTests whether any of a set of LinearRings are nested inside another ring in the set, using a spatial index to speed up the comparisons
oCgeos::algorithm::InteriorPointAreaComputes a point in the interior of an area geometry
oCgeos::algorithm::InteriorPointLineComputes a point in the interior of an linear geometry
oCgeos::algorithm::InteriorPointPointComputes a point in the interior of an point geometry
oCgeos::geom::IntersectionMatrixImplementation of Dimensionally Extended Nine-Intersection Model (DE-9IM) matrix
oCgeos::index::strtree::AbstractSTRtree::IntersectsOpA test for intersection between two bounds, necessary because subclasses of AbstractSTRtree have different implementations of bounds
oCgeos::index::bintree::IntervalRepresents an (1-dimensional) closed interval on the Real number line
oCgeos::index::strtree::IntervalA contiguous portion of 1D-space. Used internally by SIRtree
oCgeos::index::quadtree::IntervalSizeProvides a test for whether an interval is so small it should be considered as zero for the purposes of inserting it into a binary tree
oCgeos::operation::IsSimpleOpTests whether a Geometry is simple
oCgeos::operation::valid::IsValidOpImplements the algorithsm required to compute the isValid() method for Geometrys
oCgeos::index::ItemVisitorA visitor for items in an index
oCgeos::index::bintree::KeyA Key is a unique identifier for a node in a tree
oCgeos::index::quadtree::KeyA Key is a unique identifier for a node in a quadtree
oCgeos::geomgraph::LabelA Label indicates the topological relationship of a component of a topology graph to a given Geometry. This class supports labels for relationships to two Geometrys, which is sufficient for algorithms for binary operations
oCgeos::linearref::LengthIndexedLineSupports linear referencing along a linear Geometry using the length along the line as the index. Negative length values are taken as measured in the reverse direction from the end of the geometry. Out-of-range index values are handled by clamping them to the valid range of values. Non-simple lines (i.e. which loop back to cross or touch themselves) are supported
oCgeos::linearref::LengthIndexOfPointComputes the length index of the point on a linear Geometry nearest a given Coordinate
oCgeos::linearref::LengthLocationMap
oCgeos::linearref::LinearGeometryBuilder
oCgeos::linearref::LinearIteratorAn iterator over the components and coordinates of a linear geometry (LineString or MultiLineString)
oCgeos::linearref::LinearLocationRepresents a location along a LineString or MultiLineString
oCgeos::operation::overlay::LineBuilderForms JTS LineStrings out of a the graph of geomgraph::DirectedEdge created by an OverlayOp
oCgeos::algorithm::LineIntersectorA LineIntersector is an algorithm that can both test whether two line segments intersect and compute the intersection point if they do
oCgeos::operation::linemerge::LineMergerSews together a set of fully noded LineStrings
oCgeos::geom::LineSegment
oCgeos::operation::linemerge::LineSequencerBuilds a sequence from a set of LineStrings so that they are ordered end to end
oCgeos::operation::overlay::snap::LineStringSnapperSnaps the vertices and segments of a LineString to a set of target snap vertices
oCgeos::geom::LocationConstants representing the location of a point relative to a geometry
oCgeos::linearref::LocationIndexOfLine
oCgeos::linearref::LocationIndexOfPoint
oCgeos::operation::overlay::MaximalEdgeRingA ring of edges which may contain nodes of degree > 2
oCgeos::noding::snapround::MCIndexPointSnapper"Snaps" all SegmentStrings in a SpatialIndex containing MonotoneChains to a given HotPixel
oCgeos::operation::overlay::MinimalEdgeRingA ring of Edges with the property that no node has degree greater than 2
oCgeos::algorithm::MinimumDiameterComputes the minimum diameter of a geom::Geometry
oCgeos::index::chain::MonotoneChainMonotone Chains are a way of partitioning the segments of a linestring to allow for fast searching of intersections
oCgeos::geomgraph::index::MonotoneChain
oCgeos::index::chain::MonotoneChainBuilderConstructs MonotoneChains for sequences of Coordinates
oCgeos::index::chain::MonotoneChainOverlapAction
oCgeos::index::chain::MonotoneChainSelectAction
oCgeos::index::bintree::NodeBaseThe base class for nodes in a Bintree
oCgeos::index::quadtree::NodeBaseThe base class for nodes in a Quadtree
oCgeos::planargraph::NodeMapA map of Node, indexed by the coordinate of the node
oCgeos::noding::NoderComputes all intersections between segments in a set of SegmentString
oCgeos::noding::NodingValidator
oCgeos::noding::OctantMethods for computing and working with octants of the Cartesian plane
oCgeos::operation::buffer::OffsetCurveBuilderComputes the raw offset curve for a single Geometry component (ring, line or point)
oCgeos::operation::buffer::OffsetCurveSetBuilderCreates all the raw offset curves for a buffer of a Geometry
oCgeos::operation::overlay::validate::OffsetPointGeneratorGenerates points offset from both sides of all segments in a geometry
oCgeos::operation::buffer::OffsetSegmentGenerator
oCgeos::operation::buffer::OffsetSegmentStringA dynamic list of the vertices in a constructed offset curve
oCgeos::noding::OrientedCoordinateArrayAllows comparing geom::CoordinateSequences in an orientation-independent way
oCgeos::operation::overlay::OverlayNodeFactoryCreates nodes for use in the geomgraph::PlanarGraph constructed during overlay operations. NOTE: also used by operation::valid
oCgeos::operation::overlay::overlayOpOverlayOp::overlayOp Adapter for use with geom::BinaryOp
oCgeos::operation::overlay::validate::OverlayResultValidatorValidates that the result of an overlay operation is geometrically correct within a determined tolerance
oCgeos::geomgraph::PlanarGraphRepresents a directed graph which is embeddable in a planar surface
oCgeos::planargraph::PlanarGraphRepresents a directed graph which is embeddable in a planar surface
oCgeos::operation::overlay::PointBuilderConstructs geom::Point s from the nodes of an overlay graph
oCgeos::operation::geounion::PointGeometryUnionComputes the union of a Puntal geometry with another arbitrary Geometry
oCgeos::algorithm::PointLocatorComputes the topological relationship (Location) of a single point to a Geometry
oCgeos::algorithm::locate::PointOnGeometryLocatorAn interface for classes which determine the Location of points in Polygon or MultiPolygon geometries
oCgeos::algorithm::distance::PointPairDistance
oCgeos::operation::overlay::PolygonBuilderForms Polygon out of a graph of geomgraph::DirectedEdge
oCgeos::operation::polygonize::PolygonizerPolygonizes a set of Geometrys which contain linework that represents the edges of a planar graph
oCgeos::geom::PrecisionModelSpecifies the precision model of the Coordinate in a Geometry
oCgeos::geom::prep::PreparedGeometryAn interface for classes which prepare Geometrys in order to optimize the performance of repeated calls to specific geometric operations
oCgeos::geom::prep::PreparedGeometryFactoryA factory for creating PreparedGeometrys
oCgeos::geom::prep::PreparedLineStringIntersectsComputes the intersects spatial relationship predicate for a target PreparedLineString relative to all other Geometry classes
oCgeos::geom::prep::PreparedPolygonPredicateA base class for predicate operations on PreparedPolygons
oCgeos::geomgraph::Quadrant
oCgeos::operation::valid::QuadtreeNestedRingTesterTests whether any of a set of LinearRings are nested inside another ring in the set, using a Quadtree index to speed up the comparisons
oCgeos::algorithm::RayCrossingCounterCounts the number of segments crossed by a horizontal ray extending to the right from a given point, in an incremental fashion
oCgeos::operation::predicate::RectangleContainsOptimized implementation of spatial predicate "contains" for cases where the first Geometry is a rectangle
oCgeos::operation::predicate::RectangleIntersectsOptimized implementation of the "intersects" spatial predicate for cases where one Geometry is a rectangle
oCgeos::operation::relate::RelateComputerComputes the topological relationship between two Geometries
oCgeos::operation::relate::RelateNodeRepresents a node in the topological graph used to compute spatial relationships
oCgeos::operation::relate::RelateNodeFactoryUsed by the geomgraph::NodeMap in a RelateNodeGraph to create RelateNode objects
oCgeos::operation::relate::RelateNodeGraphImplements the simple graph of Nodes and geomgraph::EdgeEnd which is all that is required to determine topological relationships between Geometries
oCgeos::operation::valid::RepeatedPointTesterImplements the appropriate checks for repeated points (consecutive identical coordinates) as defined in the JTS spec
oCgeos::operation::buffer::RightmostEdgeFinderA RightmostEdgeFinder find the geomgraph::DirectedEdge in a list which has the highest coordinate, and which is oriented L to R at that point. (I.e. the right side is on the RHS of the edge.)
oCgeos::algorithm::RobustDeterminantImplements an algorithm to compute the sign of a 2x2 determinant for double precision values robustly
oCgeos::operation::predicate::SegmentIntersectionTesterTests if any line segments in two sets of CoordinateSequences intersect
oCgeos::noding::SegmentIntersectorProcesses possible intersections detected by a Noder
oCgeos::noding::SegmentNodeRepresents an intersection point between two NodedSegmentString
oCgeos::noding::SegmentNodeListA list of the SegmentNode present along a NodedSegmentString
oCgeos::noding::SegmentPointComparator
oCgeos::noding::SegmentSetMutualIntersectorAn intersector for the red-blue intersection problem
oCgeos::noding::SegmentStringAn interface for classes which represent a sequence of contiguous line segments
oCgeos::noding::SegmentStringUtilUtility methods for processing SegmentStrings
oCgeos::operation::sharedpaths::SharedPathsOpFind shared paths among two linear Geometry objects
oCgeos::geom::util::ShortCircuitedGeometryVisitorA visitor to Geometry elements which can be short-circuited by a given condition
oCgeos::precision::SimpleGeometryPrecisionReducerReduces the precision of a Geometry according to the supplied PrecisionModel, without attempting to preserve valid topology
oCgeos::geomgraph::index::SimpleMCSweepLineIntersectorFinds all intersections in one or two sets of edges, using an x-axis sweepline algorithm in conjunction with Monotone Chains
oCgeos::operation::valid::SimpleNestedRingTesterTests whether any of a set of LinearRings are nested inside another ring in the set, using a simple O(n^2) comparison
oCgeos::geomgraph::index::SimpleSweepLineIntersectorFinds all intersections in one or two sets of edges, using a simple x-axis sweepline algorithm
oCgeos::operation::overlay::snap::SnapIfNeededOverlayOpPerforms an overlay operation using snapping and enhanced precision to improve the robustness of the result
oCgeos::operation::overlay::snap::SnapOverlayOpPerforms an overlay operation using snapping and enhanced precision to improve the robustness of the result
oCgeos::index::intervalrtree::SortedPackedIntervalRTreeA static index on a set of 1-dimensional intervals, using an R-Tree packed based on the order of the interval midpoints
oCgeos::index::SpatialIndexAbstract class defines basic insertion and query operations supported by classes implementing spatial index algorithms
oCgeos::planargraph::SubgraphA subgraph of a PlanarGraph
oCgeos::operation::buffer::SubgraphDepthLocaterLocates a subgraph inside a set of subgraphs, in order to determine the outside depth of the subgraph
oCgeos::index::sweepline::SweepLineIndexA sweepline implements a sorted index on a set of intervals
oCgeos::operation::valid::SweeplineNestedRingTesterTests whether any of a set of LinearRings are nested inside another ring in the set, using an index::sweepline::SweepLineIndex to speed up the comparisons
oCgeos::simplify::TaggedLinesSimplifierSimplifies a collection of TaggedLineStrings, preserving topology (in the sense that no new intersections are introduced)
oCgeos::simplify::TaggedLineStringContains and owns a list of TaggedLineSegments
oCgeos::simplify::TaggedLineStringSimplifierSimplifies a TaggedLineString, preserving topology (in the sense that no new intersections are introduced). Uses the recursive Douglas-Peucker algorithm
oCgeos::geomgraph::TopologyLocationA TopologyLocation is the labelling of a GraphComponent's topological relationship to a single Geometry
oCgeos::simplify::TopologyPreservingSimplifierSimplifies a geometry, ensuring that the result is a valid geometry having the same dimension and number of components as the input
oCgeos::operation::valid::TopologyValidationErrorContains information about the nature and location of a Geometry validation error
oCgeos::geom::TriangleRepresents a planar triangle, and provides methods for calculating various properties of triangles
oCgeos::operation::geounion::UnaryUnionOp
oCgeos::io::WKBReaderReads a Geometry from Well-Known Binary format
oCgeos::io::WKBWriterWrites a Geometry into Well-Known Binary format
oCgeos::io::WKTReaderWKT parser class; see also WKTWriter
\Cgeos::io::WKTWriterOutputs the textual representation of a Geometry. See also WKTReader