Bullet Collision Detection & Physics Library
btMultiBodySphericalJointMotor.h
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1 /*
2 Bullet Continuous Collision Detection and Physics Library
3 Copyright (c) 2018 Erwin Coumans http://bulletphysics.org
4 
5 This software is provided 'as-is', without any express or implied warranty.
6 In no event will the authors be held liable for any damages arising from the use of this software.
7 Permission is granted to anyone to use this software for any purpose,
8 including commercial applications, and to alter it and redistribute it freely,
9 subject to the following restrictions:
10 
11 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.
12 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
13 3. This notice may not be removed or altered from any source distribution.
14 */
15 
17 
18 #ifndef BT_MULTIBODY_SPHERICAL_JOINT_MOTOR_H
19 #define BT_MULTIBODY_SPHERICAL_JOINT_MOTOR_H
20 
21 #include "btMultiBodyConstraint.h"
22 struct btSolverInfo;
23 
25 {
26 protected:
32  btScalar m_rhsClamp; //maximum error
33 
34 public:
35  btMultiBodySphericalJointMotor(btMultiBody* body, int link, btScalar maxMotorImpulse);
36 
38  virtual void finalizeMultiDof();
39 
40  virtual int getIslandIdA() const;
41  virtual int getIslandIdB() const;
42 
43  virtual void createConstraintRows(btMultiBodyConstraintArray& constraintRows,
45  const btContactSolverInfo& infoGlobal);
46 
47  virtual void setVelocityTarget(const btVector3& velTarget, btScalar kd = 1.f)
48  {
49  m_desiredVelocity = velTarget;
50  m_kd = kd;
51  }
52 
53  virtual void setPositionTarget(const btQuaternion& posTarget, btScalar kp = 1.f)
54  {
55  m_desiredPosition = posTarget;
56  m_kp = kp;
57  }
58 
59  virtual void setErp(btScalar erp)
60  {
61  m_erp = erp;
62  }
63  virtual btScalar getErp() const
64  {
65  return m_erp;
66  }
67  virtual void setRhsClamp(btScalar rhsClamp)
68  {
69  m_rhsClamp = rhsClamp;
70  }
71  virtual void debugDraw(class btIDebugDraw* drawer)
72  {
73  //todo(erwincoumans)
74  }
75 };
76 
77 #endif //BT_MULTIBODY_SPHERICAL_JOINT_MOTOR_H
virtual void debugDraw(class btIDebugDraw *drawer)
btMultiBodySphericalJointMotor(btMultiBody *body, int link, btScalar maxMotorImpulse)
This file was written by Erwin Coumans.
virtual void setPositionTarget(const btQuaternion &posTarget, btScalar kp=1.f)
virtual void setVelocityTarget(const btVector3 &velTarget, btScalar kd=1.f)
virtual void setRhsClamp(btScalar rhsClamp)
The btIDebugDraw interface class allows hooking up a debug renderer to visually debug simulations...
Definition: btIDebugDraw.h:26
btVector3 can be used to represent 3D points and vectors.
Definition: btVector3.h:80
virtual void createConstraintRows(btMultiBodyConstraintArray &constraintRows, btMultiBodyJacobianData &data, const btContactSolverInfo &infoGlobal)
The btQuaternion implements quaternion to perform linear algebra rotations in combination with btMatr...
Definition: btQuaternion.h:49
float btScalar
The btScalar type abstracts floating point numbers, to easily switch between double and single floati...
Definition: btScalar.h:294