112 lines
4.8 KiB
C++
112 lines
4.8 KiB
C++
/********************************************************************************
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* ReactPhysics3D physics library, http://www.reactphysics3d.com *
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* Copyright (c) 2010-2020 Daniel Chappuis *
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*********************************************************************************
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* *
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* This software is provided 'as-is', without any express or implied warranty. *
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* In no event will the authors be held liable for any damages arising from the *
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* use of this software. *
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* *
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* Permission is granted to anyone to use this software for any purpose, *
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* including commercial applications, and to alter it and redistribute it *
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* freely, subject to the following restrictions: *
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* *
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* 1. The origin of this software must not be misrepresented; you must not claim *
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* that you wrote the original software. If you use this software in a *
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* product, an acknowledgment in the product documentation would be *
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* appreciated but is not required. *
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* *
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* 2. Altered source versions must be plainly marked as such, and must not be *
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* misrepresented as being the original software. *
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* *
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* 3. This notice may not be removed or altered from any source distribution. *
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* *
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********************************************************************************/
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#ifndef REACTPHYSICS3D_CONFIGURATION_H
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#define REACTPHYSICS3D_CONFIGURATION_H
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// Libraries
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#include <limits>
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#include <cfloat>
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#include <utility>
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#include <sstream>
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#include <string>
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#include <reactphysics3d/decimal.h>
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#include <reactphysics3d/containers/Pair.h>
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// Windows platform
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#if defined(WIN32) ||defined(_WIN32) || defined(_WIN64) ||defined(__WIN32__) || defined(__WINDOWS__)
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#define WINDOWS_OS
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#elif defined(__APPLE__) // Apple platform
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#define APPLE_OS
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#elif defined(__linux__) || defined(linux) || defined(__linux) // Linux platform
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#define LINUX_OS
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#endif
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/// Namespace reactphysics3d
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namespace reactphysics3d {
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// ------------------- Type definitions ------------------- //
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using uint = unsigned int;
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using uchar = unsigned char;
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using ushort = unsigned short;
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using luint = long unsigned int;
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using int8 = std::int8_t;
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using uint8 = std::uint8_t;
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using int16 = std::int16_t;
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using uint16 = std::uint16_t;
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using int32 = std::int32_t;
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using uint32 = std::uint32_t;
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using int64 = std::int64_t;
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using uint64 = std::uint64_t;
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struct Entity;
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using bodypair = Pair<Entity, Entity>;
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// ------------------- Enumerations ------------------- //
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/// Position correction technique used in the constraint solver (for joints).
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/// BAUMGARTE_JOINTS : Faster but can be innacurate in some situations.
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/// NON_LINEAR_GAUSS_SEIDEL : Slower but more precise. This is the option used by default.
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enum class JointsPositionCorrectionTechnique {BAUMGARTE_JOINTS, NON_LINEAR_GAUSS_SEIDEL};
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/// Position correction technique used in the contact solver (for contacts)
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/// BAUMGARTE_CONTACTS : Faster but can be innacurate and can lead to unexpected bounciness
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/// in some situations (due to error correction factor being added to
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/// the bodies momentum).
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/// SPLIT_IMPULSES : A bit slower but the error correction factor is not added to the
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/// bodies momentum. This is the option used by default.
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enum class ContactsPositionCorrectionTechnique {BAUMGARTE_CONTACTS, SPLIT_IMPULSES};
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// ------------------- Constants ------------------- //
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/// Smallest decimal value (negative)
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const decimal DECIMAL_SMALLEST = - std::numeric_limits<decimal>::max();
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/// Maximum decimal value
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const decimal DECIMAL_LARGEST = std::numeric_limits<decimal>::max();
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/// Machine epsilon
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const decimal MACHINE_EPSILON = std::numeric_limits<decimal>::epsilon();
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/// Pi constant
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constexpr decimal PI = decimal(3.14159265);
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/// 2*Pi constant
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constexpr decimal PI_TIMES_2 = decimal(6.28318530);
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/// In the broad-phase collision detection (dynamic AABB tree), the AABBs are
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/// inflated by a constant percentage of its size to allow the collision shape to move a little bit
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/// without triggering a large modification of the tree each frame which can be costly
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constexpr decimal DYNAMIC_TREE_FAT_AABB_INFLATE_PERCENTAGE = decimal(0.08);
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/// Current version of ReactPhysics3D
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const std::string RP3D_VERSION = std::string("0.8.0");
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}
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#endif
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