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Diffstat (limited to 'thirdparty/bullet/BulletDynamics/ConstraintSolver/btUniversalConstraint.h')
| -rw-r--r-- | thirdparty/bullet/BulletDynamics/ConstraintSolver/btUniversalConstraint.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/thirdparty/bullet/BulletDynamics/ConstraintSolver/btUniversalConstraint.h b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btUniversalConstraint.h new file mode 100644 index 0000000000..9e70841043 --- /dev/null +++ b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btUniversalConstraint.h @@ -0,0 +1,65 @@ +/* +Bullet Continuous Collision Detection and Physics Library, http://bulletphysics.org +Copyright (C) 2006, 2007 Sony Computer Entertainment Inc. + +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 BT_UNIVERSAL_CONSTRAINT_H +#define BT_UNIVERSAL_CONSTRAINT_H + + + +#include "LinearMath/btVector3.h" +#include "btTypedConstraint.h" +#include "btGeneric6DofConstraint.h" + + + +/// Constraint similar to ODE Universal Joint +/// has 2 rotatioonal degrees of freedom, similar to Euler rotations around Z (axis 1) +/// and Y (axis 2) +/// Description from ODE manual : +/// "Given axis 1 on body 1, and axis 2 on body 2 that is perpendicular to axis 1, it keeps them perpendicular. +/// In other words, rotation of the two bodies about the direction perpendicular to the two axes will be equal." + +ATTRIBUTE_ALIGNED16(class) btUniversalConstraint : public btGeneric6DofConstraint +{ +protected: + btVector3 m_anchor; + btVector3 m_axis1; + btVector3 m_axis2; +public: + + BT_DECLARE_ALIGNED_ALLOCATOR(); + + // constructor + // anchor, axis1 and axis2 are in world coordinate system + // axis1 must be orthogonal to axis2 + btUniversalConstraint(btRigidBody& rbA, btRigidBody& rbB, const btVector3& anchor, const btVector3& axis1, const btVector3& axis2); + // access + const btVector3& getAnchor() { return m_calculatedTransformA.getOrigin(); } + const btVector3& getAnchor2() { return m_calculatedTransformB.getOrigin(); } + const btVector3& getAxis1() { return m_axis1; } + const btVector3& getAxis2() { return m_axis2; } + btScalar getAngle1() { return getAngle(2); } + btScalar getAngle2() { return getAngle(1); } + // limits + void setUpperLimit(btScalar ang1max, btScalar ang2max) { setAngularUpperLimit(btVector3(0.f, ang1max, ang2max)); } + void setLowerLimit(btScalar ang1min, btScalar ang2min) { setAngularLowerLimit(btVector3(0.f, ang1min, ang2min)); } + + void setAxis( const btVector3& axis1, const btVector3& axis2); +}; + + + +#endif // BT_UNIVERSAL_CONSTRAINT_H + |