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Mujoco_WASM/include/mujoco/experimental/usd/mjcPhysics/equalityJointAPI.h
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Sam Haves c63ba211e5 Refactor MjcPhysics EqualityJointAPI polynomial coefficients.
The single array attribute `mjc:polycoef` has been replaced by five individual double attributes: `mjc:coef0`, `mjc:coef1`, `mjc:coef2`, `mjc:coef3`, and `mjc:coef4`.

PiperOrigin-RevId: 865947359
Change-Id: If9d14a77b0a06e5dc712eeadd6e9402411570706
2026-02-05 07:56:11 -08:00

288 lines
11 KiB
C++

// Copyright 2025 DeepMind Technologies Limited
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef MJCPHYSICS_GENERATED_EQUALITYJOINTAPI_H
#define MJCPHYSICS_GENERATED_EQUALITYJOINTAPI_H
/// \file mjcPhysics/equalityJointAPI.h
#include <mujoco/experimental/usd/mjcPhysics/api.h>
#include <mujoco/experimental/usd/mjcPhysics/tokens.h>
#include <pxr/base/gf/matrix4d.h>
#include <pxr/base/gf/vec3d.h>
#include <pxr/base/gf/vec3f.h>
#include <pxr/base/tf/token.h>
#include <pxr/base/tf/type.h>
#include <pxr/base/vt/value.h>
#include <pxr/pxr.h>
#include <pxr/usd/usd/apiSchemaBase.h>
#include <pxr/usd/usd/prim.h>
#include <pxr/usd/usd/stage.h>
PXR_NAMESPACE_OPEN_SCOPE
class SdfAssetPath;
// -------------------------------------------------------------------------- //
// MJCEQUALITYJOINTAPI //
// -------------------------------------------------------------------------- //
/// \class MjcPhysicsEqualityJointAPI
///
/// API providing extension attributes to represent equality/joint constraints.
/// This API is applied to a joint prim which acts as the constrained joint
/// (joint1 in MuJoCo terminology). The target relationship points to another
/// joint prim which is the reference joint (joint2 in MuJoCo terminology). The
/// constrained joint's position or angle is constrained to be a quartic
/// polynomial of the reference joint's position or angle. Only scalar joint
/// types (slide and hinge) can be used.
///
class MjcPhysicsEqualityJointAPI : public UsdAPISchemaBase {
public:
/// Compile time constant representing what kind of schema this class is.
///
/// \sa UsdSchemaKind
static const UsdSchemaKind schemaKind = UsdSchemaKind::SingleApplyAPI;
/// Construct a MjcPhysicsEqualityJointAPI on UsdPrim \p prim .
/// Equivalent to MjcPhysicsEqualityJointAPI::Get(prim.GetStage(),
/// prim.GetPath()) for a \em valid \p prim, but will not immediately throw an
/// error for an invalid \p prim
explicit MjcPhysicsEqualityJointAPI(const UsdPrim& prim = UsdPrim())
: UsdAPISchemaBase(prim) {}
/// Construct a MjcPhysicsEqualityJointAPI on the prim held by \p schemaObj .
/// Should be preferred over MjcPhysicsEqualityJointAPI(schemaObj.GetPrim()),
/// as it preserves SchemaBase state.
explicit MjcPhysicsEqualityJointAPI(const UsdSchemaBase& schemaObj)
: UsdAPISchemaBase(schemaObj) {}
/// Destructor.
MJCPHYSICS_API
virtual ~MjcPhysicsEqualityJointAPI();
/// Return a vector of names of all pre-declared attributes for this schema
/// class and all its ancestor classes. Does not include attributes that
/// may be authored by custom/extended methods of the schemas involved.
MJCPHYSICS_API
static const TfTokenVector& GetSchemaAttributeNames(
bool includeInherited = true);
/// Return a MjcPhysicsEqualityJointAPI holding the prim adhering to this
/// schema at \p path on \p stage. If no prim exists at \p path on
/// \p stage, or if the prim at that path does not adhere to this schema,
/// return an invalid schema object. This is shorthand for the following:
///
/// \code
/// MjcPhysicsEqualityJointAPI(stage->GetPrimAtPath(path));
/// \endcode
///
MJCPHYSICS_API
static MjcPhysicsEqualityJointAPI Get(const UsdStagePtr& stage,
const SdfPath& path);
/// Returns true if this <b>single-apply</b> API schema can be applied to
/// the given \p prim. If this schema can not be a applied to the prim,
/// this returns false and, if provided, populates \p whyNot with the
/// reason it can not be applied.
///
/// Note that if CanApply returns false, that does not necessarily imply
/// that calling Apply will fail. Callers are expected to call CanApply
/// before calling Apply if they want to ensure that it is valid to
/// apply a schema.
///
/// \sa UsdPrim::GetAppliedSchemas()
/// \sa UsdPrim::HasAPI()
/// \sa UsdPrim::CanApplyAPI()
/// \sa UsdPrim::ApplyAPI()
/// \sa UsdPrim::RemoveAPI()
///
MJCPHYSICS_API
static bool CanApply(const UsdPrim& prim, std::string* whyNot = nullptr);
/// Applies this <b>single-apply</b> API schema to the given \p prim.
/// This information is stored by adding "MjcEqualityJointAPI" to the
/// token-valued, listOp metadata \em apiSchemas on the prim.
///
/// \return A valid MjcPhysicsEqualityJointAPI object is returned upon
/// success. An invalid (or empty) MjcPhysicsEqualityJointAPI object is
/// returned upon failure. See \ref UsdPrim::ApplyAPI() for conditions
/// resulting in failure.
///
/// \sa UsdPrim::GetAppliedSchemas()
/// \sa UsdPrim::HasAPI()
/// \sa UsdPrim::CanApplyAPI()
/// \sa UsdPrim::ApplyAPI()
/// \sa UsdPrim::RemoveAPI()
///
MJCPHYSICS_API
static MjcPhysicsEqualityJointAPI Apply(const UsdPrim& prim);
protected:
/// Returns the kind of schema this class belongs to.
///
/// \sa UsdSchemaKind
MJCPHYSICS_API
UsdSchemaKind _GetSchemaKind() const override;
private:
// needs to invoke _GetStaticTfType.
friend class UsdSchemaRegistry;
MJCPHYSICS_API
static const TfType& _GetStaticTfType();
static bool _IsTypedSchema();
// override SchemaBase virtuals.
MJCPHYSICS_API
const TfType& _GetTfType() const override;
public:
// --------------------------------------------------------------------- //
// COEF0
// --------------------------------------------------------------------- //
/// Constant coefficient a0 of the quartic polynomial. The constraint is:
/// y = y0 + a0 + a1*(x-x0) + a2*(x-x0)^2 + a3*(x-x0)^3 + a4*(x-x0)^4.
///
/// | ||
/// | -- | -- |
/// | Declaration | `uniform double mjc:coef0 = 0` |
/// | C++ Type | double |
/// | \ref Usd_Datatypes "Usd Type" | SdfValueTypeNames->Double |
/// | \ref SdfVariability "Variability" | SdfVariabilityUniform |
MJCPHYSICS_API
UsdAttribute GetCoef0Attr() const;
/// See GetCoef0Attr(), and also
/// \ref Usd_Create_Or_Get_Property for when to use Get vs Create.
/// If specified, author \p defaultValue as the attribute's default,
/// sparsely (when it makes sense to do so) if \p writeSparsely is \c true -
/// the default for \p writeSparsely is \c false.
MJCPHYSICS_API
UsdAttribute CreateCoef0Attr(VtValue const& defaultValue = VtValue(),
bool writeSparsely = false) const;
public:
// --------------------------------------------------------------------- //
// COEF1
// --------------------------------------------------------------------- //
/// Linear coefficient a1 of the quartic polynomial.
///
/// | ||
/// | -- | -- |
/// | Declaration | `uniform double mjc:coef1 = 1` |
/// | C++ Type | double |
/// | \ref Usd_Datatypes "Usd Type" | SdfValueTypeNames->Double |
/// | \ref SdfVariability "Variability" | SdfVariabilityUniform |
MJCPHYSICS_API
UsdAttribute GetCoef1Attr() const;
/// See GetCoef1Attr(), and also
/// \ref Usd_Create_Or_Get_Property for when to use Get vs Create.
/// If specified, author \p defaultValue as the attribute's default,
/// sparsely (when it makes sense to do so) if \p writeSparsely is \c true -
/// the default for \p writeSparsely is \c false.
MJCPHYSICS_API
UsdAttribute CreateCoef1Attr(VtValue const& defaultValue = VtValue(),
bool writeSparsely = false) const;
public:
// --------------------------------------------------------------------- //
// COEF2
// --------------------------------------------------------------------- //
/// Quadratic coefficient a2 of the quartic polynomial.
///
/// | ||
/// | -- | -- |
/// | Declaration | `uniform double mjc:coef2 = 0` |
/// | C++ Type | double |
/// | \ref Usd_Datatypes "Usd Type" | SdfValueTypeNames->Double |
/// | \ref SdfVariability "Variability" | SdfVariabilityUniform |
MJCPHYSICS_API
UsdAttribute GetCoef2Attr() const;
/// See GetCoef2Attr(), and also
/// \ref Usd_Create_Or_Get_Property for when to use Get vs Create.
/// If specified, author \p defaultValue as the attribute's default,
/// sparsely (when it makes sense to do so) if \p writeSparsely is \c true -
/// the default for \p writeSparsely is \c false.
MJCPHYSICS_API
UsdAttribute CreateCoef2Attr(VtValue const& defaultValue = VtValue(),
bool writeSparsely = false) const;
public:
// --------------------------------------------------------------------- //
// COEF3
// --------------------------------------------------------------------- //
/// Cubic coefficient a3 of the quartic polynomial.
///
/// | ||
/// | -- | -- |
/// | Declaration | `uniform double mjc:coef3 = 0` |
/// | C++ Type | double |
/// | \ref Usd_Datatypes "Usd Type" | SdfValueTypeNames->Double |
/// | \ref SdfVariability "Variability" | SdfVariabilityUniform |
MJCPHYSICS_API
UsdAttribute GetCoef3Attr() const;
/// See GetCoef3Attr(), and also
/// \ref Usd_Create_Or_Get_Property for when to use Get vs Create.
/// If specified, author \p defaultValue as the attribute's default,
/// sparsely (when it makes sense to do so) if \p writeSparsely is \c true -
/// the default for \p writeSparsely is \c false.
MJCPHYSICS_API
UsdAttribute CreateCoef3Attr(VtValue const& defaultValue = VtValue(),
bool writeSparsely = false) const;
public:
// --------------------------------------------------------------------- //
// COEF4
// --------------------------------------------------------------------- //
/// Quartic coefficient a4 of the quartic polynomial.
///
/// | ||
/// | -- | -- |
/// | Declaration | `uniform double mjc:coef4 = 0` |
/// | C++ Type | double |
/// | \ref Usd_Datatypes "Usd Type" | SdfValueTypeNames->Double |
/// | \ref SdfVariability "Variability" | SdfVariabilityUniform |
MJCPHYSICS_API
UsdAttribute GetCoef4Attr() const;
/// See GetCoef4Attr(), and also
/// \ref Usd_Create_Or_Get_Property for when to use Get vs Create.
/// If specified, author \p defaultValue as the attribute's default,
/// sparsely (when it makes sense to do so) if \p writeSparsely is \c true -
/// the default for \p writeSparsely is \c false.
MJCPHYSICS_API
UsdAttribute CreateCoef4Attr(VtValue const& defaultValue = VtValue(),
bool writeSparsely = false) const;
public:
// ===================================================================== //
// Feel free to add custom code below this line, it will be preserved by
// the code generator.
//
// Just remember to:
// - Close the class declaration with };
// - Close the namespace with PXR_NAMESPACE_CLOSE_SCOPE
// - Close the include guard with #endif
// ===================================================================== //
// --(BEGIN CUSTOM CODE)--
};
PXR_NAMESPACE_CLOSE_SCOPE
#endif