08ccec586a
git-svn-id: https://reactphysics3d.googlecode.com/svn/trunk@421 92aac97c-a6ce-11dd-a772-7fcde58d38e6
65 lines
3.8 KiB
C++
65 lines
3.8 KiB
C++
/********************************************************************************
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* ReactPhysics3D physics library, http://code.google.com/p/reactphysics3d/ *
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* Copyright (c) 2010 Daniel Chappuis *
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*********************************************************************************
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy *
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* of this software and associated documentation files (the "Software"), to deal *
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* in the Software without restriction, including without limitation the rights *
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in *
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* all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, *
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN *
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* THE SOFTWARE. *
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********************************************************************************/
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#ifndef CONSTANTS_H
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#define CONSTANTS_H
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// Libraries
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#include <limits>
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#include <cfloat>
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// Type definitions
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typedef unsigned int uint;
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// Mathematical constants
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const double EPSILON = 1.0e-10; // Epsilon value
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const double MACHINE_EPSILON = DBL_EPSILON; // Machine epsilon
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const double EPSILON_TEST = 0.00001; // TODO : Try not to use this value
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const double ONE_MINUS_EPSILON_TEST = 0.99999; // TODO : Try not to use this value
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const double INFINITY_CONST = std::numeric_limits<double>::infinity(); // Infinity constant
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const double PI = 3.14159265; // Pi constant
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// Physics Engine constants
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const double DEFAULT_TIMESTEP = 0.002;
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// GJK Algorithm parameters
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const double OBJECT_MARGIN = 0.04; // Object margin for collision detection
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// Contact constants
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const double FRICTION_COEFFICIENT = 0.4; // Friction coefficient
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const double PENETRATION_FACTOR = 0.2; // Penetration factor (between 0 and 1) which specify the importance of the
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// penetration depth in order to calculate the correct impulse for the contact
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// Constraint solver constants
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const uint MAX_LCP_ITERATIONS = 10; // Maximum number of iterations when solving a LCP problem
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const double AV_COUNTER_LIMIT = 500; // Maximum number value of the avBodiesCounter or avConstraintsCounter
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const double AV_PERCENT_TO_FREE = 0.5; // We will free the memory if the current nb of bodies (or constraints) is
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// less than AV_PERCENT_TO_FREE * bodiesCapacity (or constraintsCapacity). This
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// is used to avoid to keep to much memory for a long time if the system doesn't
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// need that memory. This value is between 0.0 and 1.0
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#endif
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