git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_box2d/box2d/Dynamics/Joints/b2RevoluteJoint.h

@@ -0,0 +1,204 @@
+/*
+* Copyright (c) 2006-2011 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_REVOLUTE_JOINT_H
+#define B2_REVOLUTE_JOINT_H
+
+#include "b2Joint.h"
+
+/// Revolute joint definition. This requires defining an
+/// anchor point where the bodies are joined. The definition
+/// uses local anchor points so that the initial configuration
+/// can violate the constraint slightly. You also need to
+/// specify the initial relative angle for joint limits. This
+/// helps when saving and loading a game.
+/// The local anchor points are measured from the body's origin
+/// rather than the center of mass because:
+/// 1. you might not know where the center of mass will be.
+/// 2. if you add/remove shapes from a body and recompute the mass,
+///    the joints will be broken.
+struct b2RevoluteJointDef : public b2JointDef
+{
+	b2RevoluteJointDef()
+	{
+		type = e_revoluteJoint;
+		localAnchorA.Set(0.0f, 0.0f);
+		localAnchorB.Set(0.0f, 0.0f);
+		referenceAngle = 0.0f;
+		lowerAngle = 0.0f;
+		upperAngle = 0.0f;
+		maxMotorTorque = 0.0f;
+		motorSpeed = 0.0f;
+		enableLimit = false;
+		enableMotor = false;
+	}
+
+	/// Initialize the bodies, anchors, and reference angle using a world
+	/// anchor point.
+	void Initialize(b2Body* bodyA, b2Body* bodyB, const b2Vec2& anchor);
+
+	/// The local anchor point relative to bodyA's origin.
+	b2Vec2 localAnchorA;
+
+	/// The local anchor point relative to bodyB's origin.
+	b2Vec2 localAnchorB;
+
+	/// The bodyB angle minus bodyA angle in the reference state (radians).
+	float32 referenceAngle;
+
+	/// A flag to enable joint limits.
+	bool enableLimit;
+
+	/// The lower angle for the joint limit (radians).
+	float32 lowerAngle;
+
+	/// The upper angle for the joint limit (radians).
+	float32 upperAngle;
+
+	/// A flag to enable the joint motor.
+	bool enableMotor;
+
+	/// The desired motor speed. Usually in radians per second.
+	float32 motorSpeed;
+
+	/// The maximum motor torque used to achieve the desired motor speed.
+	/// Usually in N-m.
+	float32 maxMotorTorque;
+};
+
+/// A revolute joint constrains two bodies to share a common point while they
+/// are free to rotate about the point. The relative rotation about the shared
+/// point is the joint angle. You can limit the relative rotation with
+/// a joint limit that specifies a lower and upper angle. You can use a motor
+/// to drive the relative rotation about the shared point. A maximum motor torque
+/// is provided so that infinite forces are not generated.
+class b2RevoluteJoint : public b2Joint
+{
+public:
+	b2Vec2 GetAnchorA() const;
+	b2Vec2 GetAnchorB() const;
+
+	/// The local anchor point relative to bodyA's origin.
+	const b2Vec2& GetLocalAnchorA() const { return m_localAnchorA; }
+
+	/// The local anchor point relative to bodyB's origin.
+	const b2Vec2& GetLocalAnchorB() const  { return m_localAnchorB; }
+
+	/// Get the reference angle.
+	float32 GetReferenceAngle() const { return m_referenceAngle; }
+
+	/// Get the current joint angle in radians.
+	float32 GetJointAngle() const;
+
+	/// Get the current joint angle speed in radians per second.
+	float32 GetJointSpeed() const;
+
+	/// Is the joint limit enabled?
+	bool IsLimitEnabled() const;
+
+	/// Enable/disable the joint limit.
+	void EnableLimit(bool flag);
+
+	/// Get the lower joint limit in radians.
+	float32 GetLowerLimit() const;
+
+	/// Get the upper joint limit in radians.
+	float32 GetUpperLimit() const;
+
+	/// Set the joint limits in radians.
+	void SetLimits(float32 lower, float32 upper);
+
+	/// Is the joint motor enabled?
+	bool IsMotorEnabled() const;
+
+	/// Enable/disable the joint motor.
+	void EnableMotor(bool flag);
+
+	/// Set the motor speed in radians per second.
+	void SetMotorSpeed(float32 speed);
+
+	/// Get the motor speed in radians per second.
+	float32 GetMotorSpeed() const;
+
+	/// Set the maximum motor torque, usually in N-m.
+	void SetMaxMotorTorque(float32 torque);
+	float32 GetMaxMotorTorque() const { return m_maxMotorTorque; }
+
+	/// Get the reaction force given the inverse time step.
+	/// Unit is N.
+	b2Vec2 GetReactionForce(float32 inv_dt) const;
+
+	/// Get the reaction torque due to the joint limit given the inverse time step.
+	/// Unit is N*m.
+	float32 GetReactionTorque(float32 inv_dt) const;
+
+	/// Get the current motor torque given the inverse time step.
+	/// Unit is N*m.
+	float32 GetMotorTorque(float32 inv_dt) const;
+
+	/// Dump to b2Log.
+	void Dump();
+
+protected:
+
+	friend class b2Joint;
+	friend class b2GearJoint;
+
+	b2RevoluteJoint(const b2RevoluteJointDef* def);
+
+	void InitVelocityConstraints(const b2SolverData& data);
+	void SolveVelocityConstraints(const b2SolverData& data);
+	bool SolvePositionConstraints(const b2SolverData& data);
+
+	// Solver shared
+	b2Vec2 m_localAnchorA;
+	b2Vec2 m_localAnchorB;
+	b2Vec3 m_impulse;
+	float32 m_motorImpulse;
+
+	bool m_enableMotor;
+	float32 m_maxMotorTorque;
+	float32 m_motorSpeed;
+
+	bool m_enableLimit;
+	float32 m_referenceAngle;
+	float32 m_lowerAngle;
+	float32 m_upperAngle;
+
+	// Solver temp
+	juce::int32 m_indexA;
+	juce::int32 m_indexB;
+	b2Vec2 m_rA;
+	b2Vec2 m_rB;
+	b2Vec2 m_localCenterA;
+	b2Vec2 m_localCenterB;
+	float32 m_invMassA;
+	float32 m_invMassB;
+	float32 m_invIA;
+	float32 m_invIB;
+	b2Mat33 m_mass;			// effective mass for point-to-point constraint.
+	float32 m_motorMass;	// effective mass for motor/limit angular constraint.
+	b2LimitState m_limitState;
+};
+
+inline float32 b2RevoluteJoint::GetMotorSpeed() const
+{
+	return m_motorSpeed;
+}
+
+#endif