106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
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/**********************************************************************
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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/operation/relateng/TopologyPredicate.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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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 BasicPredicate : public TopologyPredicate {
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private:
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static constexpr int UNKNOWN = -1;
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static constexpr int FALSE = 0;
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static constexpr int TRUE = 1;
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int m_value = UNKNOWN;
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static bool isKnown(int val);
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static bool toBoolean(int val);
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static int toValue(bool val);
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protected:
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/**
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* Updates the predicate value to the given state
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* if it is currently unknown.
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*
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* @param val the predicate value to update
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*/
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void setValue(bool val);
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void setValue(int val);
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void setValueIf(bool val, bool cond);
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void require(bool cond);
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using TopologyPredicate::requireCovers;
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void requireCovers(const Envelope& a, const Envelope& b);
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public:
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/**
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* Tests if two geometries intersect
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* based on an interaction at given locations.
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*
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* @param locA the location on geometry A
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* @param locB the location on geometry B
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* @return true if the geometries intersect
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*/
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static bool isIntersection(Location locA, Location locB);
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std::string name() const override = 0;
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void finish() override = 0;
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bool isKnown() const override;
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bool value() const override;
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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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