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Diffstat (limited to 'src/libjin/3rdparty/Box2D/Dynamics/Joints/b2MouseJoint.h')
-rw-r--r-- | src/libjin/3rdparty/Box2D/Dynamics/Joints/b2MouseJoint.h | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/src/libjin/3rdparty/Box2D/Dynamics/Joints/b2MouseJoint.h b/src/libjin/3rdparty/Box2D/Dynamics/Joints/b2MouseJoint.h deleted file mode 100644 index 7441978..0000000 --- a/src/libjin/3rdparty/Box2D/Dynamics/Joints/b2MouseJoint.h +++ /dev/null @@ -1,129 +0,0 @@ -/* -* Copyright (c) 2006-2007 Erin Catto http://www.box2d.org -* -* 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. -*/ - -#ifndef B2_MOUSE_JOINT_H -#define B2_MOUSE_JOINT_H - -#include "Box2D/Dynamics/Joints/b2Joint.h" - -/// Mouse joint definition. This requires a world target point, -/// tuning parameters, and the time step. -struct b2MouseJointDef : public b2JointDef -{ - b2MouseJointDef() - { - type = e_mouseJoint; - target.Set(0.0f, 0.0f); - maxForce = 0.0f; - frequencyHz = 5.0f; - dampingRatio = 0.7f; - } - - /// The initial world target point. This is assumed - /// to coincide with the body anchor initially. - b2Vec2 target; - - /// The maximum constraint force that can be exerted - /// to move the candidate body. Usually you will express - /// as some multiple of the weight (multiplier * mass * gravity). - float32 maxForce; - - /// The response speed. - float32 frequencyHz; - - /// The damping ratio. 0 = no damping, 1 = critical damping. - float32 dampingRatio; -}; - -/// A mouse joint is used to make a point on a body track a -/// specified world point. This a soft constraint with a maximum -/// force. This allows the constraint to stretch and without -/// applying huge forces. -/// NOTE: this joint is not documented in the manual because it was -/// developed to be used in the testbed. If you want to learn how to -/// use the mouse joint, look at the testbed. -class b2MouseJoint : public b2Joint -{ -public: - - /// Implements b2Joint. - b2Vec2 GetAnchorA() const override; - - /// Implements b2Joint. - b2Vec2 GetAnchorB() const override; - - /// Implements b2Joint. - b2Vec2 GetReactionForce(float32 inv_dt) const override; - - /// Implements b2Joint. - float32 GetReactionTorque(float32 inv_dt) const override; - - /// Use this to update the target point. - void SetTarget(const b2Vec2& target); - const b2Vec2& GetTarget() const; - - /// Set/get the maximum force in Newtons. - void SetMaxForce(float32 force); - float32 GetMaxForce() const; - - /// Set/get the frequency in Hertz. - void SetFrequency(float32 hz); - float32 GetFrequency() const; - - /// Set/get the damping ratio (dimensionless). - void SetDampingRatio(float32 ratio); - float32 GetDampingRatio() const; - - /// The mouse joint does not support dumping. - void Dump() override { b2Log("Mouse joint dumping is not supported.\n"); } - - /// Implement b2Joint::ShiftOrigin - void ShiftOrigin(const b2Vec2& newOrigin) override; - -protected: - friend class b2Joint; - - b2MouseJoint(const b2MouseJointDef* def); - - void InitVelocityConstraints(const b2SolverData& data) override; - void SolveVelocityConstraints(const b2SolverData& data) override; - bool SolvePositionConstraints(const b2SolverData& data) override; - - b2Vec2 m_localAnchorB; - b2Vec2 m_targetA; - float32 m_frequencyHz; - float32 m_dampingRatio; - float32 m_beta; - - // Solver shared - b2Vec2 m_impulse; - float32 m_maxForce; - float32 m_gamma; - - // Solver temp - int32 m_indexA; - int32 m_indexB; - b2Vec2 m_rB; - b2Vec2 m_localCenterB; - float32 m_invMassB; - float32 m_invIB; - b2Mat22 m_mass; - b2Vec2 m_C; -}; - -#endif |