AreaBoundary.h

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef TRINITY_AREA_BOUNDARY_H
#define TRINITY_AREA_BOUNDARY_H
 
#include "Position.h"
 
class TC_GAME_API AreaBoundary
{
 public:
 bool IsWithinBoundary(Position const* pos) const { return pos && (IsWithinBoundaryArea(pos) != _isInvertedBoundary); }
 bool IsWithinBoundary(Position const& pos) const { return IsWithinBoundary(&pos); }
 
 virtual ~AreaBoundary() { }
 
 protected:
 explicit AreaBoundary(bool isInverted) : _isInvertedBoundary(isInverted) { }
 
 struct DoublePosition : Position
 {
 DoublePosition(double x = 0.0, double y = 0.0, double z = 0.0, float o = 0.0f)
 : Position(float(x), float(y), float(z), o), DoublePosX(x), DoublePosY(y), DoublePosZ(z) { }
 
 DoublePosition(float x, float y = 0.0f, float z = 0.0f, float o = 0.0f)
 : Position(x, y, z, o), DoublePosX(x), DoublePosY(y), DoublePosZ(z) { }
 
 DoublePosition(Position const & pos)
 : Position(pos), DoublePosX(pos.m_positionX), DoublePosY(pos.m_positionY), DoublePosZ(pos.m_positionZ) { }
 
 double GetDoublePositionX() const { return DoublePosX; }
 double GetDoublePositionY() const { return DoublePosY; }
 double GetDoublePositionZ() const { return DoublePosZ; }
 
 double GetDoubleExactDist2dSq(DoublePosition const& pos) const {
 double const offX = GetDoublePositionX() - pos.GetDoublePositionX();
 double const offY = GetDoublePositionY() - pos.GetDoublePositionY();
 return (offX * offX) + (offY * offY);
 }
 
 Position* sync()
 {
 m_positionX = float(DoublePosX);
 m_positionY = float(DoublePosY);
 m_positionZ = float(DoublePosZ);
 return this;
 }
 
 double DoublePosX;
 double DoublePosY;
 double DoublePosZ;
 };
 
 virtual bool IsWithinBoundaryArea(Position const* pos) const = 0;
 
 private:
 bool _isInvertedBoundary;
};
 
class TC_GAME_API RectangleBoundary : public AreaBoundary
{
 public:
 // X axis is north/south, Y axis is east/west, larger values are northwest
 RectangleBoundary(float southX, float northX, float eastY, float westY, bool isInverted = false);
 
 protected:
 bool IsWithinBoundaryArea(Position const* pos) const override;
 
 private:
 float const _minX, _maxX, _minY, _maxY;
};
 
class TC_GAME_API CircleBoundary : public AreaBoundary
{
 public:
 CircleBoundary(Position const& center, double radius, bool isInverted = false);
 CircleBoundary(Position const& center, Position const& pointOnCircle, bool isInverted = false);
 
 protected:
 bool IsWithinBoundaryArea(Position const* pos) const override;
 
 private:
 DoublePosition const _center;
 double const _radiusSq;
};
 
class TC_GAME_API EllipseBoundary : public AreaBoundary
{
 public:
 EllipseBoundary(Position const& center, double radiusX, double radiusY, bool isInverted = false);
 
 protected:
 bool IsWithinBoundaryArea(Position const* pos) const override;
 
 private:
 DoublePosition const _center;
 double const _radiusYSq, _scaleXSq;
};
 
class TC_GAME_API TriangleBoundary : public AreaBoundary
{
 public:
 TriangleBoundary(Position const& pointA, Position const& pointB, Position const& pointC, bool isInverted = false);
 
 protected:
 bool IsWithinBoundaryArea(Position const* pos) const override;
 
 private:
 DoublePosition const _a, _b, _c;
 double const _abx, _bcx, _cax, _aby, _bcy, _cay;
};
 
class TC_GAME_API ParallelogramBoundary : public AreaBoundary
{
 public:
 // Note: AB must be orthogonal to AD
 ParallelogramBoundary(Position const& cornerA, Position const& cornerB, Position const& cornerD, bool isInverted = false);
 
 protected:
 bool IsWithinBoundaryArea(Position const* pos) const override;
 
 private:
 DoublePosition const _a, _b, _d, _c;
 double const _abx, _dax, _aby, _day;
};
 
class TC_GAME_API ZRangeBoundary : public AreaBoundary
{
 public:
 ZRangeBoundary(float minZ, float maxZ, bool isInverted = false);
 
 protected:
 bool IsWithinBoundaryArea(Position const* pos) const override;
 
 private:
 float const _minZ, _maxZ;
};
 
class TC_GAME_API BoundaryUnionBoundary : public AreaBoundary
{
 public:
 BoundaryUnionBoundary(AreaBoundary const* b1, AreaBoundary const* b2, bool isInverted = false);
 
 protected:
 virtual ~BoundaryUnionBoundary();
 bool IsWithinBoundaryArea(Position const* pos) const override;
 
 private:
 AreaBoundary const* const _b1;
 AreaBoundary const* const _b2;
};
 
#endif //TRINITY_AREA_BOUNDARY_H