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https://github.com/mod-playerbots/azerothcore-wotlk.git
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67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
/*
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* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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*
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* Utility library to define some global function for geometric calculations
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*
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*/
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#ifndef _ACORE_GEOMETRY_H
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#define _ACORE_GEOMETRY_H
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#include <cstdlib>
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#include <math.h>
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[[nodiscard]] inline float getAngle(float startX, float startY, float destX, float destY)
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{
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auto dx = destX - startX;
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auto dy = destY - startY;
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auto ang = std::atan2(dy, dx);
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ang = (ang >= 0) ? ang : 2 * float(M_PI) + ang;
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return ang;
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}
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[[nodiscard]] inline float getSlopeAngle(float startX, float startY, float startZ, float destX, float destY, float destZ)
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{
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float floorDist = std::sqrt(pow(startY - destY, 2.0f) + pow(startX - destX, 2.0f));
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return atan(std::abs(destZ - startZ) / std::abs(floorDist));
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}
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[[nodiscard]] inline float getSlopeAngleAbs(float startX, float startY, float startZ, float destX, float destY, float destZ)
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{
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return std::abs(getSlopeAngle(startX, startY, startZ, destX, destY, destZ));
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}
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[[nodiscard]] inline double getCircleAreaByRadius(double radius)
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{
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return radius * radius * M_PI;
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}
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[[nodiscard]] inline double getCirclePerimeterByRadius(double radius)
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{
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return radius * M_PI;
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}
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[[nodiscard]] inline double getCylinderVolume(double height, double radius)
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{
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return height * getCircleAreaByRadius(radius);
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}
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#endif // _ACORE_GEOMETRY_H
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