875 lines
32 KiB
C++
875 lines
32 KiB
C++
//
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// 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) 2008-2019 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_VEHICLE_WHEELS_H
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#define PX_VEHICLE_WHEELS_H
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/** \addtogroup vehicle
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@{
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*/
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#include "foundation/PxSimpleTypes.h"
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#include "vehicle/PxVehicleShaders.h"
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#include "vehicle/PxVehicleComponents.h"
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#include "common/PxBase.h"
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#include "PxRigidDynamic.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 PxVehicleWheels4SimData;
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class PxVehicleWheels4DynData;
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class PxVehicleTireForceCalculator;
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class PxShape;
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class PxPhysics;
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class PxMaterial;
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/**
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\brief Flags to configure the vehicle wheel simulation.
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@see PxVehicleWheelsSimData::setFlags(), PxVehicleWheelsSimData::getFlags()
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*/
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struct PxVehicleWheelsSimFlag
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{
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enum Enum
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{
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/**
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\brief Limit the suspension expansion velocity.
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For extreme damping ratios, large damping forces might result in the vehicle sticking to the ground where
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one would rather expect to see the vehicle lift off. While it is highly recommended to use somewhat realistic
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damping ratios, this flag can be used to limit the velocity of the suspension. In more detail, the simulation
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will check whether the suspension can extend to the target length in the given simulation time step. If that
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is the case, the suspension force will be computed as usual, else the force will be set to zero. Enabling
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this feature gives a slightly more realisitic behavior at the potential cost of more easily losing control
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when steering the vehicle.
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*/
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eLIMIT_SUSPENSION_EXPANSION_VELOCITY = (1 << 0)
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};
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};
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/**
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\brief Collection of set bits defined in #PxVehicleWheelsSimFlag.
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@see PxVehicleWheelsSimFlag
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*/
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typedef PxFlags<PxVehicleWheelsSimFlag::Enum, PxU32> PxVehicleWheelsSimFlags;
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PX_FLAGS_OPERATORS(PxVehicleWheelsSimFlag::Enum, PxU32)
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/**
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\brief Data structure describing configuration data of a vehicle with up to 20 wheels.
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*/
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class PxVehicleWheelsSimData
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{
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//= ATTENTION! =====================================================================================
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// Changing the data layout of this class breaks the binary serialization format. See comments for
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// PX_BINARY_SERIAL_VERSION. If a modification is required, please adjust the getBinaryMetaData
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// function. If the modification is made on a custom branch, please change PX_BINARY_SERIAL_VERSION
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// accordingly.
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//==================================================================================================
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public:
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friend class PxVehicleWheels;
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friend class PxVehicleNoDrive;
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friend class PxVehicleDrive4W;
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friend class PxVehicleDriveTank;
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friend class PxVehicleUpdate;
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/**
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\brief Allocate a PxVehicleWheelsSimData instance for with nbWheels.
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@see free
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*/
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static PxVehicleWheelsSimData* allocate(const PxU32 nbWheels);
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/**
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\brief Setup with mass information that can be applied to the default values of the suspensions, wheels, and tires
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set in their respective constructors.
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\param chassisMass is the mass of the chassis.
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\note This function assumes that the suspensions equally share the load of the chassis mass. It also
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assumes that the suspension will have a particular natural frequency and damping ratio that is typical
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of a standard car. If either of these assumptions is broken then each suspension will need to
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be individually configured with custom strength, damping rate, and sprung mass.
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@see allocate
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*/
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void setChassisMass(const PxF32 chassisMass);
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/**
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\brief Free a PxVehicleWheelsSimData instance
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@see allocate
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*/
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void free();
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/**
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\brief Copy wheel simulation data.
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\note The number of wheels on both instances of PxVehicleWheelsSimData must match.
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*/
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PxVehicleWheelsSimData& operator=(const PxVehicleWheelsSimData& src);
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/**
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\brief Copy the data of a single wheel unit (wheel, suspension, tire) from srcWheel of src to trgWheel.
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\param[in] src is the data to be copied.
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\param[in] srcWheel is the wheel whose data will be copied from src.
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\param[in] trgWheel is the wheel that will be assigned the copied data.
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*/
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void copy(const PxVehicleWheelsSimData& src, const PxU32 srcWheel, const PxU32 trgWheel);
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/**
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\brief Return the number of wheels
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@see allocate
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*/
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PxU32 getNbWheels() const {return mNbActiveWheels;}
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/**
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\brief Return the suspension data of the idth wheel
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*/
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const PxVehicleSuspensionData& getSuspensionData(const PxU32 id) const;
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/**
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\brief Return the wheel data of the idth wheel
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*/
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const PxVehicleWheelData& getWheelData(const PxU32 id) const;
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/**
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\brief Return the tire data of the idth wheel
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*/
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const PxVehicleTireData& getTireData(const PxU32 id) const;
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/**
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\brief Return the direction of travel of the suspension of the idth wheel
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*/
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const PxVec3& getSuspTravelDirection(const PxU32 id) const;
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/**
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\brief Return the application point of the suspension force of the suspension of the idth wheel as an offset from the rigid body center of mass.
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\note Specified relative to the center of mass of the rigid body
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*/
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const PxVec3& getSuspForceAppPointOffset(const PxU32 id) const;
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/**
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\brief Return the application point of the tire force of the tire of the idth wheel as an offset from the rigid body center of mass.
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\note Specified relative to the centre of mass of the rigid body
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*/
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const PxVec3& getTireForceAppPointOffset(const PxU32 id) const;
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/**
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\brief Return the offset from the rigid body centre of mass to the centre of the idth wheel.
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*/
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const PxVec3& getWheelCentreOffset(const PxU32 id) const;
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/**
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\brief Return the wheel mapping for the ith wheel.
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\note The return value is the element in the array of
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shapes of the vehicle's PxRigidDynamic that corresponds to the ith wheel. A return value of -1 means
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that the wheel is not mapped to a PxShape.
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@see PxRigidActor.getShapes
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*/
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PxI32 getWheelShapeMapping(const PxU32 wheelId) const;
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/**
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\brief Return the scene query filter data used by the specified suspension line
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*/
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const PxFilterData& getSceneQueryFilterData(const PxU32 suspId) const;
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/**
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\brief Return the number of unique anti-roll bars that have been added with addAntiRollBarData
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@see PxVehicleWheelsSimData::addAntiRollBarData
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*/
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PxU32 getNbAntiRollBars() const
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{
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return mNbActiveAntiRollBars;
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}
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/**
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\brief Return a specific anti-roll bar.
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\param antiRollId is the unique id of the anti-roll bar
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\note The return value of addAntiRollBarData is a unique id for that specific anti-roll bar
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and can be used as input parameter for getAntiRollBarData in order to query the same anti-roll bar.
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Alternatively, it is possible to iterate over all anti-roll bars by choosing antiRollId
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in range (0, getNbAntiRollBars()).
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*/
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const PxVehicleAntiRollBarData& getAntiRollBarData(const PxU32 antiRollId) const;
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/**
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\brief Return the data that describes the filtering of the tire load to produce smoother handling at large time-steps.
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*/
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PX_FORCE_INLINE const PxVehicleTireLoadFilterData& getTireLoadFilterData() const
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{
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return mNormalisedLoadFilter;
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}
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/**
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\brief Set the suspension data of the idth wheel
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\param[in] id is the wheel index.
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\param[in] susp is the suspension data to be applied.
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*/
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void setSuspensionData(const PxU32 id, const PxVehicleSuspensionData& susp);
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/**
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\brief Set the wheel data of the idth wheel
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\param[in] id is the wheel index.
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\param[in] wheel is the wheel data to be applied.
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*/
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void setWheelData(const PxU32 id, const PxVehicleWheelData& wheel);
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/**
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\brief Set the tire data of the idth wheel
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\param[in] id is the wheel index.
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\param[in] tire is the tire data to be applied.
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*/
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void setTireData(const PxU32 id, const PxVehicleTireData& tire);
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/**
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\brief Set the direction of travel of the suspension of the idth wheel
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\param[in] id is the wheel index
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\param[in] dir is the suspension travel direction to be applied.
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*/
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void setSuspTravelDirection(const PxU32 id, const PxVec3& dir);
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/**
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\brief Set the application point of the suspension force of the suspension of the idth wheel.
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\param[in] id is the wheel index
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\param[in] offset is the offset from the rigid body center of mass to the application point of the suspension force.
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\note Specified relative to the centre of mass of the rigid body
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*/
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void setSuspForceAppPointOffset(const PxU32 id, const PxVec3& offset);
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/**
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\brief Set the application point of the tire force of the tire of the idth wheel.
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\param[in] id is the wheel index
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\param[in] offset is the offset from the rigid body center of mass to the application point of the tire force.
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\note Specified relative to the centre of mass of the rigid body
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*/
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void setTireForceAppPointOffset(const PxU32 id, const PxVec3& offset);
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/**
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\brief Set the offset from the rigid body centre of mass to the centre of the idth wheel.
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\param[in] id is the wheel index
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\param[in] offset is the offset from the rigid body center of mass to the center of the wheel at rest.
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\note Specified relative to the centre of mass of the rigid body
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*/
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void setWheelCentreOffset(const PxU32 id, const PxVec3& offset);
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/**
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\brief Set mapping between wheel id and position of corresponding wheel shape in the list of actor shapes.
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\note This mapping is used to pose the correct wheel shapes with the latest wheel rotation angle, steer angle, and suspension travel
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while allowing arbitrary ordering of the wheel shapes in the actor's list of shapes.
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\note Use setWheelShapeMapping(i,-1) to register that there is no wheel shape corresponding to the ith wheel
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\note Set setWheelShapeMapping(i,k) to register that the ith wheel corresponds to the kth shape in the actor's list of shapes.
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\note The default values correspond to setWheelShapeMapping(i,i) for all wheels.
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\note Calling this function will also pose the relevant PxShape at the rest position of the wheel.
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\param wheelId is the wheel index
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\param shapeId is the shape index.
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@see PxVehicleUpdates, PxVehicleDrive4W::setup, PxVehicleDriveTank::setup, PxVehicleNoDrive::setup, setSceneQueryFilterData, PxRigidActor::getShapes
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*/
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void setWheelShapeMapping(const PxU32 wheelId, const PxI32 shapeId);
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/**
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\brief Set the scene query filter data that will be used for raycasts along the travel
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direction of the specified suspension. The default value is PxFilterData(0,0,0,0)
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\param suspId is the wheel index
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\param sqFilterData is the raycast filter data for the suspension raycast.
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@see setWheelShapeMapping
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*/
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void setSceneQueryFilterData(const PxU32 suspId, const PxFilterData& sqFilterData);
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/**
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\brief Set the data that describes the filtering of the tire load to produce smoother handling at large timesteps.
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\param tireLoadFilter is the smoothing function data.
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*/
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void setTireLoadFilterData(const PxVehicleTireLoadFilterData& tireLoadFilter);
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/**
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\brief Set the anti-roll suspension for a pair of wheels.
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\param antiRoll is the anti-roll suspension.
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\note If an anti-roll bar has already been set for the same logical wheel pair
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(independent of wheel index order specified by PxVehicleAntiRollBar.mWheel0 and PxVehicleAntiRollBar.mWheel0)
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then the existing anti-roll bar is updated with a new stiffness parameter antiRoll.mStiffness.
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\note If the wheel pair specified by antiRoll does not yet have an anti-roll bar then antiRoll is added to
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a list of anti-roll bars for the vehicle.
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\return If antiRoll represents a new wheel pair then a unique id is assigned to the anti-roll bar and returned.
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If antiRoll represents an existing wheel pair then the unique id of the existing anti-roll bar is returned.
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The return value is always in range (0, getNbAntiRollBars()).
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\note The return value can be used to query the anti-roll bar with getAntiRollBarData(id).
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\note The number of possible anti-roll bars is limited to half the wheel count.
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\note An existing anti-roll bar can be disabled by calling antiRoll.mStiffness to zero.
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@see PxVehicleWheelsSimData::getAntiRollBarData, PxVehicleAntiRollBarData
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*/
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PxU32 addAntiRollBarData(const PxVehicleAntiRollBarData& antiRoll);
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/**
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\brief Disable a wheel so that zero suspension forces and zero tire forces are applied to the rigid body from this wheel.
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\note If the vehicle has a differential (PxVehicleNW/PxVehicle4W) then the differential (PxVehicleDifferentialNWData/PxVehicleDifferential4WData)
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needs to be configured so that no drive torque is delivered to the disabled wheel.
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\note If the vehicle is of type PxVehicleNoDrive then zero drive torque must be applied to the disabled wheel.
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\note For tanks (PxVehicleDriveTank) any drive torque that could be delivered to the wheel through the tank differential will be
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re-directed to the remaining enabled wheels.
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@see enableWheel
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@see PxVehicleDifferentialNWData::setDrivenWheel
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@see PxVehicleDifferential4WData::mFrontLeftRightSplit, PxVehicleDifferential4WData::mRearLeftRightSplit, PxVehicleDifferential4WData::mType
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@see PxVehicleNoDrive::setDriveTorque
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@see PxVehicle4WEnable3WTadpoleMode, PxVehicle4WEnable3WDeltaMode
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\note If a PxShape is associated with the disabled wheel then the association must be broken by calling setWheelShapeMapping(wheelId, -1).
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@see setWheelShapeMapping
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\note A wheel that is disabled must also simultaneously be given zero wheel rotation speed.
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@see PxVehicleWheelsDynData::setWheelRotationSpeed
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\note Care must be taken with the sprung mass supported by the remaining enabled wheels. Depending on the desired effect, the mass of the rigid body
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might need to be distributed among the remaining enabled wheels and suspensions.
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\param[in] wheel is the wheel index.
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*/
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void disableWheel(const PxU32 wheel);
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/**
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\brief Enable a wheel so that suspension forces and tire forces are applied to the rigid body.
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All wheels are enabled by default and remain enabled until they are disabled.
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\param[in] wheel is the wheel index.
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@see disableWheel
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*/
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void enableWheel(const PxU32 wheel);
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/**
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\brief Test if a wheel has been disabled.
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\param[in] wheel is the wheel index.
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*/
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bool getIsWheelDisabled(const PxU32 wheel) const;
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/**
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\brief Set the number of vehicle sub-steps that will be performed when the vehicle's longitudinal
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speed is below and above a threshold longitudinal speed.
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\note More sub-steps provides better stability but with greater computational cost.
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\note Typically, vehicles require more sub-steps at very low forward speeds.
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\note The threshold longitudinal speed has a default value that is the equivalent of 5 metres per second after accounting for
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the length scale set in PxTolerancesScale.
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\note The sub-step count below the threshold longitudinal speed has a default of 3.
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\note The sub-step count above the threshold longitudinal speed has a default of 1.
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\note Each sub-step has time advancement equal to the time-step passed to PxVehicleUpdates divided by the number of required sub-steps.
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\note The contact planes of the most recent suspension line raycast are reused across all sub-steps.
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\note Each sub-step computes tire and suspension forces and then advances a velocity, angular velocity and transform.
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\note At the end of all sub-steps the vehicle actor is given the velocity and angular velocity that would move the actor from its start transform prior
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to the first sub-step to the transform computed at the end of the last substep, assuming it doesn't collide with anything along the way in the next PhysX SDK update.
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\note The global pose of the actor is left unchanged throughout the sub-steps.
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\param[in] thresholdLongitudinalSpeed is a threshold speed that is used to categorize vehicle speed as low speed or high speed.
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\param[in] lowForwardSpeedSubStepCount is the number of sub-steps performed in PxVehicleUpates for vehicles that have longitudinal speed lower than thresholdLongitudinalSpeed.
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\param[in] highForwardSpeedSubStepCount is the number of sub-steps performed in PxVehicleUpdates for vehicles that have longitudinal speed graeter than thresholdLongitudinalSpeed.
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*/
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void setSubStepCount(const PxReal thresholdLongitudinalSpeed, const PxU32 lowForwardSpeedSubStepCount, const PxU32 highForwardSpeedSubStepCount);
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/**
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\brief Set the minimum denominator used in the longitudinal slip calculation.
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\note The longitudinal slip has a theoretical value of (w*r - vz)/|vz|, where w is the angular speed of the wheel; r is the radius of the wheel;
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and vz is the component of rigid body velocity (computed at the wheel base) that lies along the longitudinal wheel direction. The term |vz|
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normalizes the slip, while preserving the sign of the longitudinal tire slip. The difficulty here is that when |vz| approaches zero the
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longitudinal slip approaches infinity. A solution to this problem is to replace the denominator (|vz|) with a value that never falls below a chosen threshold.
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The longitudinal slip is then calculated with (w*r - vz)/PxMax(|vz|, minLongSlipDenominator).
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\note The default value is the equivalent of 4 metres per second after accounting for the length scale set in PxTolerancesScale.
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\note Adjust this value upwards if a vehicle has difficulty coming to rest.
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\note Decreasing the timestep (or increasing the number of sub-steps at low longitudinal speed with setSubStepCount) should allow stable stable
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behavior with smaller values of minLongSlipDenominator.
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*/
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void setMinLongSlipDenominator(const PxReal minLongSlipDenominator);
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/**
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\brief Set the vehicle wheel simulation flags.
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\param[in] flags The flags to set (see #PxVehicleWheelsSimFlags).
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<b>Default:</b> no flag set
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@see PxVehicleWheelsSimFlag
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*/
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void setFlags(PxVehicleWheelsSimFlags flags);
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/**
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|
\brief Return the vehicle wheel simulation flags.
|
|
|
|
\return The values of the flags.
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|
|
|
@see PxVehicleWheelsSimFlag
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|
*/
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|
PxVehicleWheelsSimFlags getFlags() const;
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private:
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|
|
|
/**
|
|
\brief Graph to filter normalised load
|
|
@see setTireLoadFilterData, getTireLoadFilterData
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|
*/
|
|
PxVehicleTireLoadFilterData mNormalisedLoadFilter;
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|
|
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/**
|
|
\brief Wheels data organised in blocks of 4 wheels.
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|
*/
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|
PxVehicleWheels4SimData* mWheels4SimData;
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|
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/**
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|
\brief Number of blocks of 4 wheels.
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*/
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|
PxU32 mNbWheels4;
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|
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/**
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|
\brief Number of actual wheels (<=(mNbWheels4*4))
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|
*/
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|
PxU32 mNbActiveWheels;
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/**
|
|
\brief Anti-roll bars
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*/
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|
PxVehicleAntiRollBarData* mAntiRollBars;
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/**
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\brief 2 anti-rollbars allocated for each block of 4 wheels.
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|
*/
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|
PxU32 mNbAntiRollBars4;
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/**
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|
\brief Number of active anti-roll bars.
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|
*/
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|
PxU32 mNbActiveAntiRollBars;
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/**
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|
\brief Which of the mNbActiveWheels are active or disabled?
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The default is that all mNbActiveWheels wheels are active.
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*/
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|
PxU32 mActiveWheelsBitmapBuffer[((PX_MAX_NB_WHEELS + 31) & ~31) >> 5];
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/**
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|
\brief Threshold longitudinal speed used to decide whether to use
|
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mLowForwardSpeedSubStepCount or mHighForwardSpeedSubStepCount as the
|
|
number of sub-steps that will be peformed.
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*/
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|
PxF32 mThresholdLongitudinalSpeed;
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/**
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|
\brief Number of sub-steps that will be performed if the longitudinal speed
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|
of the vehicle is smaller than mThresholdLongitudinalSpeed.
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*/
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|
PxU32 mLowForwardSpeedSubStepCount;
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/**
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|
\brief Number of sub-steps that will be performed if the longitudinal speed
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of the vehicle is greater than or equal to mThresholdLongitudinalSpeed.
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*/
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|
PxU32 mHighForwardSpeedSubStepCount;
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/**
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|
\brief Minimum long slip denominator
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*/
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|
PxF32 mMinLongSlipDenominator;
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|
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/**
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|
\brief The vehicle wheel simulation flags.
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|
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|
@see PxVehicleWheelsSimFlags
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|
*/
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|
PxU32 mFlags;
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|
|
#if PX_P64_FAMILY
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|
PxU32 mPad[1];
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|
#endif
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/**
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|
\brief Test if wheel simulation data has been setup with legal values.
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|
*/
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|
bool isValid() const;
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/**
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|
\brief see PxVehicleWheels::allocate
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|
*/
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|
static PxU32 computeByteSize(const PxU32 numWheels);
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static PxU8* patchUpPointers(const PxU32 numWheels, PxVehicleWheelsSimData* simData, PxU8* ptrIn);
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PxVehicleWheelsSimData(const PxU32 numWheels);
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//serialization
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public:
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PxVehicleWheelsSimData(const PxEMPTY) : mNormalisedLoadFilter(PxEmpty) {}
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static void getBinaryMetaData(PxOutputStream& stream);
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PxU32 getNbWheels4() const { return mNbWheels4; }
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PxU32 getNbSuspensionData() const { return mNbActiveWheels; }
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PxU32 getNbWheelData() const { return mNbActiveWheels; }
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|
PxU32 getNbSuspTravelDirection() const { return mNbActiveWheels; }
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|
PxU32 getNbTireData() const { return mNbActiveWheels; }
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PxU32 getNbSuspForceAppPointOffset() const { return mNbActiveWheels; }
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|
PxU32 getNbTireForceAppPointOffset() const { return mNbActiveWheels; }
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|
PxU32 getNbWheelCentreOffset() const { return mNbActiveWheels; }
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|
PxU32 getNbWheelShapeMapping() const { return mNbActiveWheels; }
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|
PxU32 getNbSceneQueryFilterData() const { return mNbActiveWheels; }
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|
PxF32 getMinLongSlipDenominator() const {return mMinLongSlipDenominator;}
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void setThresholdLongSpeed(const PxF32 f) {mThresholdLongitudinalSpeed = f;}
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|
PxF32 getThresholdLongSpeed() const {return mThresholdLongitudinalSpeed;}
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|
void setLowForwardSpeedSubStepCount(const PxU32 f) {mLowForwardSpeedSubStepCount = f;}
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|
PxU32 getLowForwardSpeedSubStepCount() const {return mLowForwardSpeedSubStepCount;}
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|
void setHighForwardSpeedSubStepCount(const PxU32 f) {mHighForwardSpeedSubStepCount = f;}
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|
PxU32 getHighForwardSpeedSubStepCount() const {return mHighForwardSpeedSubStepCount;}
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|
void setWheelEnabledState(const PxU32 wheel, const bool state) {if(state) {enableWheel(wheel);} else {disableWheel(wheel);}}
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|
bool getWheelEnabledState(const PxU32 wheel) const {return !getIsWheelDisabled(wheel);}
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|
PxU32 getNbWheelEnabledState() const {return mNbActiveWheels;}
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|
PxU32 getNbAntiRollBars4() const { return mNbAntiRollBars4; }
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|
PxU32 getNbAntiRollBarData() const {return mNbActiveAntiRollBars;}
|
|
void setAntiRollBarData(const PxU32 id, const PxVehicleAntiRollBarData& antiRoll);
|
|
PxVehicleWheelsSimData(){}
|
|
~PxVehicleWheelsSimData(){}
|
|
//~serialization
|
|
};
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|
PX_COMPILE_TIME_ASSERT(0==(sizeof(PxVehicleWheelsSimData) & 15));
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|
|
|
/**
|
|
\brief Data structure with instanced dynamics data for wheels
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|
*/
|
|
class PxVehicleWheelsDynData
|
|
{
|
|
//= ATTENTION! =====================================================================================
|
|
// Changing the data layout of this class breaks the binary serialization format. See comments for
|
|
// PX_BINARY_SERIAL_VERSION. If a modification is required, please adjust the getBinaryMetaData
|
|
// function. If the modification is made on a custom branch, please change PX_BINARY_SERIAL_VERSION
|
|
// accordingly.
|
|
//==================================================================================================
|
|
public:
|
|
|
|
friend class PxVehicleWheels;
|
|
friend class PxVehicleDrive4W;
|
|
friend class PxVehicleDriveTank;
|
|
friend class PxVehicleUpdate;
|
|
|
|
PxVehicleWheelsDynData(){}
|
|
~PxVehicleWheelsDynData(){}
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|
|
|
/**
|
|
\brief Set all wheels to their rest state.
|
|
@see setup
|
|
*/
|
|
void setToRestState();
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|
|
|
/**
|
|
\brief Set the tire force shader function
|
|
\param[in] tireForceShaderFn is the shader function that will be used to compute tire forces.
|
|
*/
|
|
void setTireForceShaderFunction(PxVehicleComputeTireForce tireForceShaderFn);
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|
|
|
/**
|
|
\brief Set the tire force shader data for a specific tire
|
|
\param[in] tireId is the wheel index
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|
\param[in] tireForceShaderData is the data describing the tire.
|
|
*/
|
|
void setTireForceShaderData(const PxU32 tireId, const void* tireForceShaderData);
|
|
|
|
/**
|
|
\brief Get the tire force shader data for a specific tire
|
|
*/
|
|
const void* getTireForceShaderData(const PxU32 tireId) const;
|
|
|
|
/**
|
|
\brief Set the wheel rotation speed (radians per second) about the rolling axis for the specified wheel.
|
|
\param[in] wheelIdx is the wheel index
|
|
\param[in] speed is the rotation speed to be applied to the wheel.
|
|
*/
|
|
void setWheelRotationSpeed(const PxU32 wheelIdx, const PxReal speed);
|
|
|
|
/**
|
|
\brief Return the rotation speed about the rolling axis of a specified wheel .
|
|
*/
|
|
PxReal getWheelRotationSpeed(const PxU32 wheelIdx) const;
|
|
|
|
/**
|
|
\brief Set the wheel rotation angle (radians) about the rolling axis of the specified wheel.
|
|
\param[in] wheelIdx is the wheel index
|
|
\param[in] angle is the rotation angle to be applied to the wheel.
|
|
*/
|
|
void setWheelRotationAngle(const PxU32 wheelIdx, const PxReal angle);
|
|
|
|
/**
|
|
\brief Return the rotation angle about the rolling axis for the specified wheel.
|
|
*/
|
|
PxReal getWheelRotationAngle(const PxU32 wheelIdx) const;
|
|
|
|
/**
|
|
\brief Set the user data pointer for the specified wheel
|
|
It has a default value of NULL.
|
|
\param[in] tireIdx is the wheel index
|
|
\param[in] userData is the data to be associated with the wheel.
|
|
*/
|
|
void setUserData(const PxU32 tireIdx, void* userData);
|
|
|
|
/**
|
|
\brief Get the user data pointer that was set for the specified wheel
|
|
*/
|
|
void* getUserData(const PxU32 tireIdx) const;
|
|
|
|
/**
|
|
\brief Copy the dynamics data of a single wheel unit (wheel, suspension, tire) from srcWheel of src to trgWheel.
|
|
\param[in] src is the data to be copied.
|
|
\param[in] srcWheel is the wheel whose data will be copied from src.
|
|
\param[in] trgWheel is the wheel that will be assigned the copied data.
|
|
*/
|
|
void copy(const PxVehicleWheelsDynData& src, const PxU32 srcWheel, const PxU32 trgWheel);
|
|
|
|
private:
|
|
|
|
/**
|
|
\brief Dynamics data arranged in blocks of 4 wheels.
|
|
*/
|
|
PxVehicleWheels4DynData* mWheels4DynData;
|
|
|
|
/**
|
|
\brief Test if wheel dynamics data have legal values.
|
|
*/
|
|
bool isValid() const;
|
|
|
|
/**
|
|
\brief Shader data and function for tire force calculations.
|
|
*/
|
|
PxVehicleTireForceCalculator* mTireForceCalculators;
|
|
|
|
/**
|
|
\brief A userData pointer can be stored for each wheel.
|
|
@see setUserData, getUserData
|
|
*/
|
|
void** mUserDatas;
|
|
|
|
/**
|
|
\brief Number of blocks of 4 wheels.
|
|
*/
|
|
PxU32 mNbWheels4;
|
|
|
|
/**
|
|
\brief Number of wheels (mNbActiveWheels <= (mNbWheels4*4))
|
|
*/
|
|
PxU32 mNbActiveWheels;
|
|
|
|
PxU32 mPad[3];
|
|
|
|
/**
|
|
\brief see PxVehicleWheels::allocate
|
|
*/
|
|
static PxU32 computeByteSize(const PxU32 numWheels);
|
|
static PxU8* patchUpPointers(const PxU32 numWheels, PxVehicleWheelsDynData* dynData, PxU8* ptr);
|
|
PxVehicleWheelsDynData(const PxU32 numWheels);
|
|
|
|
//serialization
|
|
public:
|
|
static void getBinaryMetaData(PxOutputStream& stream);
|
|
PxU32 getNbWheelRotationSpeed() const { return mNbActiveWheels; }
|
|
PxU32 getNbWheelRotationAngle() const { return mNbActiveWheels; }
|
|
PxVehicleWheels4DynData* getWheel4DynData() const { return mWheels4DynData; }
|
|
//~serialization
|
|
};
|
|
PX_COMPILE_TIME_ASSERT(0==(sizeof(PxVehicleWheelsDynData) & 15));
|
|
|
|
/**
|
|
\brief Data structure with instanced dynamics data and configuration data of a vehicle with just wheels
|
|
@see PxVehicleDrive, PxVehicleDrive4W, PxVehicleDriveTank
|
|
*/
|
|
class PxVehicleWheels : public PxBase
|
|
{
|
|
//= ATTENTION! =====================================================================================
|
|
// Changing the data layout of this class breaks the binary serialization format. See comments for
|
|
// PX_BINARY_SERIAL_VERSION. If a modification is required, please adjust the getBinaryMetaData
|
|
// function. If the modification is made on a custom branch, please change PX_BINARY_SERIAL_VERSION
|
|
// accordingly.
|
|
//==================================================================================================
|
|
public:
|
|
|
|
friend class PxVehicleUpdate;
|
|
friend class PxVehicleConstraintShader;
|
|
|
|
/**
|
|
\brief Return the type of vehicle
|
|
@see PxVehicleTypes
|
|
*/
|
|
PX_FORCE_INLINE PxU32 getVehicleType() const {return mType;}
|
|
|
|
/**
|
|
\brief Get non-const ptr to PxRigidDynamic instance that is the vehicle's physx representation
|
|
*/
|
|
PX_FORCE_INLINE PxRigidDynamic* getRigidDynamicActor() {return mActor;}
|
|
|
|
/**
|
|
\brief Get const ptr to PxRigidDynamic instance that is the vehicle's physx representation
|
|
*/
|
|
PX_FORCE_INLINE const PxRigidDynamic* getRigidDynamicActor() const {return mActor;}
|
|
|
|
/**
|
|
\brief Compute the rigid body velocity component along the forward vector of the rigid body transform.
|
|
@see PxVehicleSetBasisVectors
|
|
*/
|
|
PxReal computeForwardSpeed() const;
|
|
|
|
/**
|
|
\brief Compute the rigid body velocity component along the right vector of the rigid body transform.
|
|
@see PxVehicleSetBasisVectors
|
|
*/
|
|
PxReal computeSidewaysSpeed() const;
|
|
|
|
/**
|
|
\brief Data describing the setup of all the wheels/suspensions/tires.
|
|
*/
|
|
PxVehicleWheelsSimData mWheelsSimData;
|
|
|
|
/**
|
|
\brief Data describing the dynamic state of all wheels/suspension/tires.
|
|
*/
|
|
PxVehicleWheelsDynData mWheelsDynData;
|
|
|
|
protected:
|
|
|
|
/**
|
|
\brief Set all wheels to their rest state
|
|
*/
|
|
void setToRestState();
|
|
|
|
/**
|
|
\brief Test that all configuration and instanced dynamics data is valid.
|
|
*/
|
|
bool isValid() const;
|
|
|
|
/**
|
|
@see PxVehicleDrive4W::allocate, PxVehicleDriveTank::allocate
|
|
*/
|
|
static PxU32 computeByteSize(const PxU32 nbWheels);
|
|
static PxU8* patchupPointers(const PxU32 nbWheels, PxVehicleWheels* vehWheels, PxU8* ptr);
|
|
virtual void init(const PxU32 numWheels);
|
|
|
|
/**
|
|
\brief Deallocate a PxVehicleWheels instance.
|
|
@see PxVehicleDrive4W::free, PxVehicleDriveTank::free
|
|
*/
|
|
void free();
|
|
|
|
/*
|
|
\brief Deferred deletion.
|
|
*/
|
|
void onConstraintRelease();
|
|
|
|
/**
|
|
@see PxVehicleDrive4W::setup, PxVehicleDriveTank::setup
|
|
*/
|
|
void setup
|
|
(PxPhysics* physics, PxRigidDynamic* vehActor,
|
|
const PxVehicleWheelsSimData& wheelsData,
|
|
const PxU32 nbDrivenWheels, const PxU32 nbNonDrivenWheels);
|
|
|
|
/**
|
|
\brief The rigid body actor that represents the vehicle in the PhysX SDK.
|
|
*/
|
|
PxRigidDynamic* mActor;
|
|
|
|
private:
|
|
|
|
/**
|
|
\brief Count the number of constraint connectors that have hit their callback when deleting a vehicle.
|
|
Can only delete the vehicle's memory when all constraint connectors have hit their callback.
|
|
*/
|
|
PxU32 mNbNonDrivenWheels;
|
|
|
|
PxU8 mOnConstraintReleaseCounter;
|
|
|
|
protected:
|
|
|
|
/**
|
|
\brief Vehicle type (eVehicleDriveTypes)
|
|
*/
|
|
PxU8 mType;
|
|
|
|
#if PX_P64_FAMILY
|
|
PxU8 mPad0[14];
|
|
#else
|
|
PxU8 mPad0[14];
|
|
#endif
|
|
|
|
//serialization
|
|
public:
|
|
virtual void requiresObjects(PxProcessPxBaseCallback& c);
|
|
virtual const char* getConcreteTypeName() const { return "PxVehicleWheels"; }
|
|
virtual bool isKindOf(const char* name) const { return !::strcmp("PxVehicleWheels", name) || PxBase::isKindOf(name); }
|
|
virtual void preExportDataReset() {}
|
|
virtual void exportExtraData(PxSerializationContext&);
|
|
void importExtraData(PxDeserializationContext&);
|
|
void resolveReferences(PxDeserializationContext&);
|
|
static void getBinaryMetaData(PxOutputStream& stream);
|
|
PX_FORCE_INLINE PxU32 getNbNonDrivenWheels() const { return mNbNonDrivenWheels; }
|
|
PxVehicleWheels(PxType concreteType, PxBaseFlags baseFlags) : PxBase(concreteType, baseFlags) {}
|
|
PxVehicleWheels(PxBaseFlags baseFlags) : PxBase(baseFlags), mWheelsSimData(PxEmpty) {}
|
|
virtual ~PxVehicleWheels() {}
|
|
virtual void release() { free(); }
|
|
//~serialization
|
|
};
|
|
PX_COMPILE_TIME_ASSERT(0==(sizeof(PxVehicleWheels) & 15));
|
|
|
|
#if !PX_DOXYGEN
|
|
} // namespace physx
|
|
#endif
|
|
|
|
/** @} */
|
|
#endif //PX_VEHICLE_WHEELS_H
|