132 lines
3.2 KiB
C++
132 lines
3.2 KiB
C++
/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright (c) 2024 Martin Davis
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* Copyright (C) 2024 Paul Ramsey <pramsey@cleverelephant.ca>
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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*
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**********************************************************************/
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#pragma once
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#include <geos/geom/Location.h>
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#include <geos/geom/Dimension.h>
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#include <geos/geom/IntersectionMatrix.h>
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#include <geos/operation/relateng/BasicPredicate.h>
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#include <geos/export.h>
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#include <memory>
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#include <vector>
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// Forward declarations
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namespace geos {
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namespace geom {
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class Envelope;
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}
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}
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using geos::geom::Envelope;
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using geos::geom::Location;
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using geos::geom::Dimension;
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using geos::geom::IntersectionMatrix;
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namespace geos { // geos.
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namespace operation { // geos.operation.
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namespace relateng { // geos.operation.relateng
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class GEOS_DLL IMPredicate : public BasicPredicate {
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private:
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protected:
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static constexpr int DIM_UNKNOWN = Dimension::DONTCARE;
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int dimA;
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int dimB;
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IntersectionMatrix intMatrix;
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/**
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* Gets the value of the predicate according to the current
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* intersection matrix state.
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*
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* @return the current predicate value
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*/
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virtual bool valueIM() = 0;
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/**
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* Tests whether predicate evaluation can be short-circuited
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* due to the current state of the matrix providing
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* enough information to determine the predicate value.
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*
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* If this value is true then valueIM()
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* must provide the correct result of the predicate.
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*
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* @return true if the predicate value is determined
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*/
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virtual bool isDetermined() const = 0;
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/**
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* Tests whether the exterior of the specified input geometry
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* is intersected by any part of the other input.
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*
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* @param isA the input geometry
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* @return true if the input geometry exterior is intersected
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*/
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bool intersectsExteriorOf(bool isA) const;
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bool isIntersects(Location locA, Location locB) const;
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public:
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IMPredicate()
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{
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// intMatrix = new IntersectionMatrix();
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//-- E/E is always dim = 2
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intMatrix.set(Location::EXTERIOR, Location::EXTERIOR, Dimension::A);
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}
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static bool isDimsCompatibleWithCovers(int dim0, int dim1);
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void init(int dA, int dB) override;
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void updateDimension(Location locA, Location locB, int dimension) override;
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bool isDimChanged(Location locA, Location locB, int dimension) const;
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using TopologyPredicate::isKnown;
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bool isKnown(Location locA, Location locB) const;
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bool isDimension(Location locA, Location locB, int dimension) const;
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int getDimension(Location locA, Location locB) const;
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/**
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* Sets the final value based on the state of the IM.
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*/
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void finish() override;
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std::string toString() const;
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friend std::ostream& operator<<(std::ostream& os, const IMPredicate& imp);
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};
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} // namespace geos.operation.relateng
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} // namespace geos.operation
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} // namespace geos
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