/**********************************************************************

 *

 * GEOS - Geometry Engine Open Source

 * http://geos.osgeo.org

 *

 * Copyright (C) 2001-2002 Vivid Solutions Inc.

 *

 * This is free software; you can redistribute and/or modify it under

 * the terms of the GNU Lesser General Public Licence as published

 * by the Free Software Foundation.

 * See the COPYING file for more information.

 *

 **********************************************************************

 *

 * Last port: geom/prep/PreparedPolygonPredicate.java rev. 1.4 (JTS-1.10)

 * (2007-12-12)

 *

 **********************************************************************/

#include <geos/geom/prep/PreparedPolygonPredicate.h>

#include <geos/geom/prep/PreparedPolygon.h>

#include <geos/geom/Coordinate.h>

#include <geos/geom/CoordinateFilter.h>

#include <geos/geom/util/ComponentCoordinateExtracter.h>

#include <geos/geom/Location.h>

#include <geos/algorithm/locate/PointOnGeometryLocator.h>

#include <geos/algorithm/locate/SimplePointInAreaLocator.h>

// std

#include <cstddef>

namespace geos {

namespace geom { // geos.geom

namespace prep { // geos.geom.prep

//

// private:

//

//

// protected:

//

struct LocationMatchingFilter : public GeometryComponentFilter {

    explicit LocationMatchingFilter(algorithm::locate::PointOnGeometryLocator* locator, Location loc) :

        pt_locator(locator), test_loc(loc), found(false) {}

    algorithm::locate::PointOnGeometryLocator* pt_locator;

    const Location test_loc;

    bool found;

    void filter_ro(const Geometry* g) override {

        if (g->isEmpty())

            return;

        const CoordinateXY* pt = g->getCoordinate();

        const auto loc = pt_locator->locate(pt);

        if (loc == test_loc) {

            found = true;

        }

    }

    bool isDone() override {

        return found;

    }

};

struct LocationNotMatchingFilter : public GeometryComponentFilter {

    explicit LocationNotMatchingFilter(algorithm::locate::PointOnGeometryLocator* locator, Location loc) :

            pt_locator(locator), test_loc(loc), found(false) {}

    algorithm::locate::PointOnGeometryLocator* pt_locator;

    const Location test_loc;

    bool found;

    void filter_ro(const Geometry* g) override {

        if (g->isEmpty())

            return;

        const CoordinateXY* pt = g->getCoordinate();

        const auto loc = pt_locator->locate(pt);

        if (loc != test_loc) {

            found = true;

        }

    }

    bool isDone() override {

        return found;

    }

};

struct OutermostLocationFilter : public GeometryComponentFilter {

    explicit OutermostLocationFilter(algorithm::locate::PointOnGeometryLocator* locator) :

    pt_locator(locator),

    outermost_loc(geom::Location::NONE),

    done(false) {}

    algorithm::locate::PointOnGeometryLocator* pt_locator;

    Location outermost_loc;

    bool done;

    void filter_ro(const Geometry* g) override {

        if (g->isEmpty())

            return;

        const CoordinateXY* pt = g->getCoordinate();

        auto loc = pt_locator->locate(pt);

        if (outermost_loc == Location::NONE || outermost_loc == Location::INTERIOR) {

            outermost_loc = loc;

        } else if (loc == Location::EXTERIOR) {

            outermost_loc = loc;

            done = true;

        }

    }

    bool isDone() override {

        return done;

    }

    Location getOutermostLocation() {

        return outermost_loc;

    }

};

Location

PreparedPolygonPredicate::getOutermostTestComponentLocation(const geom::Geometry* testGeom) const

{

    OutermostLocationFilter filter(prepPoly->getPointLocator());

    testGeom->apply_ro(&filter);

    return filter.getOutermostLocation();

}

bool

PreparedPolygonPredicate::isAllTestComponentsInTargetInterior(

    const geom::Geometry* testGeom) const

{

    LocationNotMatchingFilter filter(prepPoly->getPointLocator(), geom::Location::INTERIOR);

    testGeom->apply_ro(&filter);

    return !filter.found;

}

bool

PreparedPolygonPredicate::isAnyTestComponentInTarget(

    const geom::Geometry* testGeom) const

{

    LocationNotMatchingFilter filter(prepPoly->getPointLocator(), geom::Location::EXTERIOR);

    testGeom->apply_ro(&filter);

    return filter.found;

}

bool

PreparedPolygonPredicate::isAnyTestComponentInTargetInterior(

    const geom::Geometry* testGeom) const

{

    LocationMatchingFilter filter(prepPoly->getPointLocator(), geom::Location::INTERIOR);

    testGeom->apply_ro(&filter);

    return filter.found;

}

bool

PreparedPolygonPredicate::isAnyTargetComponentInAreaTest(

    const geom::Geometry* testGeom,

    const std::vector<const CoordinateXY*>* targetRepPts) const

{

    algorithm::locate::SimplePointInAreaLocator piaLoc(testGeom);

    for(const auto& pt : *targetRepPts) {

        const Location loc = piaLoc.locate(pt);

        if(geom::Location::EXTERIOR != loc) {

            return true;

        }

    }

    return false;

}

//

// public:

//

} // namespace geos.geom.prep

} // namespace geos.geom

} // namespace geos