145 lines
5.7 KiB
C++
145 lines
5.7 KiB
C++
// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2023 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#ifndef PX_RACK_AND_PINION_JOINT_H
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#define PX_RACK_AND_PINION_JOINT_H
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/** \addtogroup extensions
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@{
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*/
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#include "extensions/PxJoint.h"
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#if !PX_DOXYGEN
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namespace physx
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{
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#endif
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class PxRackAndPinionJoint;
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/**
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\brief Create a rack & pinion Joint.
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\param[in] physics The physics SDK
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\param[in] actor0 An actor to which the joint is attached. NULL may be used to attach the joint to a specific point in the world frame
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\param[in] localFrame0 The position and orientation of the joint relative to actor0
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\param[in] actor1 An actor to which the joint is attached. NULL may be used to attach the joint to a specific point in the world frame
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\param[in] localFrame1 The position and orientation of the joint relative to actor1
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@see PxRackAndPinionJoint
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*/
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PxRackAndPinionJoint* PxRackAndPinionJointCreate(PxPhysics& physics, PxRigidActor* actor0, const PxTransform& localFrame0, PxRigidActor* actor1, const PxTransform& localFrame1);
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/**
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\brief A joint that connects an existing revolute joint to an existing prismatic joint,
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and constrains their relative angular/linear velocity and position with respect to each other.
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@see PxRackAndPinionJointCreate PxJoint
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*/
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class PxRackAndPinionJoint : public PxJoint
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{
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public:
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/**
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\brief Set the hinge & prismatic joints connected by the rack & pinion joint.
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The passed hinge joint can be either PxRevoluteJoint, PxD6Joint or PxArticulationJointReducedCoordinate. It cannot be null.
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The passed prismatic joint can be either PxPrismaticJoint or PxD6Joint. It cannot be null.
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Note that these joints are only used to compute the positional error correction term,
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used to adjust potential drift between jointed actors. The rack & pinion joint can run without
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calling this function, but in that case some visible overlap may develop over time between
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the teeth of the rack & pinion meshes.
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\note Calling this function resets the internal positional error correction term.
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\param[in] hinge The hinge joint (pinion)
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\param[in] prismatic The prismatic joint (rack)
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\return true if success
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*/
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virtual bool setJoints(const PxBase* hinge, const PxBase* prismatic) = 0;
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/**
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\brief Get the hinge & prismatic joints connected by the rack & pinion joint.
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\param[out] hinge The hinge joint (pinion)
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\param[out] prismatic The prismatic joint (rack)
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*/
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virtual void getJoints(const PxBase*& hinge, const PxBase*& prismatic) const = 0;
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/**
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\brief Set the desired ratio directly.
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\note You may need to use a negative gear ratio if the joint frames of involved actors are not oriented in the same direction.
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\note Calling this function resets the internal positional error correction term.
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\param[in] ratio Desired ratio between the hinge and the prismatic.
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*/
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virtual void setRatio(float ratio) = 0;
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/**
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\brief Get the ratio.
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\return Current ratio
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*/
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virtual float getRatio() const = 0;
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/**
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\brief Set the desired ratio indirectly.
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This is a simple helper function that computes the ratio from passed data:
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ratio = (PI*2*nbRackTeeth)/(rackLength*nbPinionTeeth)
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\note Calling this function resets the internal positional error correction term.
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\param[in] nbRackTeeth Number of teeth on the rack (cannot be zero)
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\param[in] nbPinionTeeth Number of teeth on the pinion (cannot be zero)
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\param[in] rackLength Length of the rack
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\return true if success
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*/
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virtual bool setData(PxU32 nbRackTeeth, PxU32 nbPinionTeeth, float rackLength) = 0;
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virtual const char* getConcreteTypeName() const { return "PxRackAndPinionJoint"; }
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protected:
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PX_INLINE PxRackAndPinionJoint(PxType concreteType, PxBaseFlags baseFlags) : PxJoint(concreteType, baseFlags) {}
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PX_INLINE PxRackAndPinionJoint(PxBaseFlags baseFlags) : PxJoint(baseFlags) {}
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virtual bool isKindOf(const char* name) const { return !::strcmp("PxRackAndPinionJoint", name) || PxJoint::isKindOf(name); }
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};
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#if !PX_DOXYGEN
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} // namespace physx
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#endif
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/** @} */
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#endif
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