axiosengine/axios/Settings.cs

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2012-03-19 23:57:59 +00:00
/*
* Farseer Physics Engine based on Box2D.XNA port:
* Copyright (c) 2010 Ian Qvist
*
* Box2D.XNA port of Box2D:
* Copyright (c) 2009 Brandon Furtwangler, Nathan Furtwangler
*
* Original source Box2D:
* Copyright (c) 2006-2009 Erin Catto http://www.gphysics.com
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
using System;
namespace FarseerPhysics
{
public static class Settings
{
public static string Version = "Farseer Engine Version 3.3.1 (Patched)";
public const float MaxFloat = 3.402823466e+38f;
public const float Epsilon = 1.192092896e-07f;
public const float Pi = 3.14159265359f;
// Common
/// <summary>
/// Enabling diagnistics causes the engine to gather timing information.
/// You can see how much time it took to solve the contacts, solve CCD
/// and update the controllers.
/// NOTE: If you are using a debug view that shows performance counters,
/// you might want to enable this.
/// </summary>
public static bool EnableDiagnostics = true;
/// <summary>
/// The number of velocity iterations used in the solver.
/// </summary>
public static int VelocityIterations = 8;
/// <summary>
/// The number of position iterations used in the solver.
/// </summary>
public static int PositionIterations = 3;
/// <summary>
/// Enable/Disable Continuous Collision Detection (CCD)
/// </summary>
public static bool ContinuousPhysics = true;
/// <summary>
/// The number of velocity iterations in the TOI solver
/// </summary>
public static int TOIVelocityIterations = 8;
/// <summary>
/// The number of position iterations in the TOI solver
/// </summary>
public static int TOIPositionIterations = 20;
/// <summary>
/// Maximum number of sub-steps per contact in continuous physics simulation.
/// </summary>
public const int MaxSubSteps = 8;
/// <summary>
/// Enable/Disable warmstarting
/// </summary>
public static bool EnableWarmstarting = true;
/// <summary>
/// Enable/Disable sleeping
/// </summary>
public static bool AllowSleep = true;
/// <summary>
/// The maximum number of vertices on a convex polygon.
/// </summary>
public static int MaxPolygonVertices = 8;
/// <summary>
/// Farseer Physics Engine has a different way of filtering fixtures than Box2d.
/// We have both FPE and Box2D filtering in the engine. If you are upgrading
/// from earlier versions of FPE, set this to true.
/// </summary>
public static bool UseFPECollisionCategories;
/// <summary>
/// Conserve memory makes sure that objects are used by reference instead of cloned.
/// When you give a vertices collection to a PolygonShape, it will by default copy the vertices
/// instead of using the original reference. This is to ensure that objects modified outside the engine
/// does not affect the engine itself, however, this uses extra memory. This behavior
/// can be turned off by setting ConserveMemory to true.
/// </summary>
public const bool ConserveMemory = false;
/// <summary>
/// The maximum number of contact points between two convex shapes.
/// </summary>
public const int MaxManifoldPoints = 2;
/// <summary>
/// This is used to fatten AABBs in the dynamic tree. This allows proxies
/// to move by a small amount without triggering a tree adjustment.
/// This is in meters.
/// </summary>
public const float AABBExtension = 0.1f;
/// <summary>
/// This is used to fatten AABBs in the dynamic tree. This is used to predict
/// the future position based on the current displacement.
/// This is a dimensionless multiplier.
/// </summary>
public const float AABBMultiplier = 2.0f;
/// <summary>
/// A small length used as a collision and constraint tolerance. Usually it is
/// chosen to be numerically significant, but visually insignificant.
/// </summary>
public const float LinearSlop = 0.005f;
/// <summary>
/// A small angle used as a collision and constraint tolerance. Usually it is
/// chosen to be numerically significant, but visually insignificant.
/// </summary>
public const float AngularSlop = (2.0f / 180.0f * Pi);
/// <summary>
/// The radius of the polygon/edge shape skin. This should not be modified. Making
/// this smaller means polygons will have an insufficient buffer for continuous collision.
/// Making it larger may create artifacts for vertex collision.
/// </summary>
public const float PolygonRadius = (2.0f * LinearSlop);
// Dynamics
/// <summary>
/// Maximum number of contacts to be handled to solve a TOI impact.
/// </summary>
public const int MaxTOIContacts = 32;
/// <summary>
/// A velocity threshold for elastic collisions. Any collision with a relative linear
/// velocity below this threshold will be treated as inelastic.
/// </summary>
public const float VelocityThreshold = 1.0f;
/// <summary>
/// The maximum linear position correction used when solving constraints. This helps to
/// prevent overshoot.
/// </summary>
public const float MaxLinearCorrection = 0.2f;
/// <summary>
/// The maximum angular position correction used when solving constraints. This helps to
/// prevent overshoot.
/// </summary>
public const float MaxAngularCorrection = (8.0f / 180.0f * Pi);
/// <summary>
/// This scale factor controls how fast overlap is resolved. Ideally this would be 1 so
/// that overlap is removed in one time step. However using values close to 1 often lead
/// to overshoot.
/// </summary>
public const float ContactBaumgarte = 0.2f;
// Sleep
/// <summary>
/// The time that a body must be still before it will go to sleep.
/// </summary>
public const float TimeToSleep = 0.5f;
/// <summary>
/// A body cannot sleep if its linear velocity is above this tolerance.
/// </summary>
public const float LinearSleepTolerance = 0.01f;
/// <summary>
/// A body cannot sleep if its angular velocity is above this tolerance.
/// </summary>
public const float AngularSleepTolerance = (2.0f / 180.0f * Pi);
/// <summary>
/// The maximum linear velocity of a body. This limit is very large and is used
/// to prevent numerical problems. You shouldn't need to adjust this.
/// </summary>
public const float MaxTranslation = 2.0f;
public const float MaxTranslationSquared = (MaxTranslation * MaxTranslation);
/// <summary>
/// The maximum angular velocity of a body. This limit is very large and is used
/// to prevent numerical problems. You shouldn't need to adjust this.
/// </summary>
public const float MaxRotation = (0.5f * Pi);
public const float MaxRotationSquared = (MaxRotation * MaxRotation);
/// <summary>
/// Friction mixing law. Feel free to customize this.
/// </summary>
/// <param name="friction1">The friction1.</param>
/// <param name="friction2">The friction2.</param>
/// <returns></returns>
public static float MixFriction(float friction1, float friction2)
{
return (float) Math.Sqrt(friction1 * friction2);
}
/// <summary>
/// Restitution mixing law. Feel free to customize this.
/// </summary>
/// <param name="restitution1">The restitution1.</param>
/// <param name="restitution2">The restitution2.</param>
/// <returns></returns>
public static float MixRestitution(float restitution1, float restitution2)
{
return restitution1 > restitution2 ? restitution1 : restitution2;
}
}
}