packedUsdWrapper.h

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//
// Copyright 2017 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef __GUSD_PACKEDUSDWRAPPER_H__
#define __GUSD_PACKEDUSDWRAPPER_H__

#include "primWrapper.h"

#include "pxr/pxr.h"
#include "pxr/usd/usdGeom/xform.h"

PXR_NAMESPACE_OPEN_SCOPE

class GusdPackedUsdWrapper : public GusdPrimWrapper
{
public:
    GusdPackedUsdWrapper( const UsdStagePtr& stage, const SdfPath& path, 
                          bool isOverride );
    GusdPackedUsdWrapper(const GusdPackedUsdWrapper& other);
    ~GusdPackedUsdWrapper() override;

    // GusdPrimWrapper interface -----------------------------------------------

public:

    const UsdGeomImageable getUsdPrim() const override {
            return UsdGeomImageable(m_primRef);
    }

    bool redefine( 
           const UsdStagePtr& stage,
           const SdfPath& path,
           const GusdContext& ctxt,
           const GT_PrimitiveHandle& sourcePrim ) override;
    
    const char* className() const override;

    void enlargeBounds(UT_BoundingBox boxes[], int nsegments) const override;

    int getMotionSegments() const override;

    int64 getMemoryUsage() const override;

    GT_PrimitiveHandle doSoftCopy() const override;

    bool
    updateFromGTPrim(const GT_PrimitiveHandle& sourcePrim,
                     const UT_Matrix4D&        houXform,
                     const GusdContext&        ctxt,
                     GusdSimpleXformCache&     xformCache) override;

    bool isValid() const override;

    // -------------------------------------------------------------------------
    
public:
    
    static GT_PrimitiveHandle
    defineForWrite( const GT_PrimitiveHandle& sourcePrim,
                    const UsdStagePtr& stage,
                    const SdfPath& path,
                    const GusdContext& ctxt);

private:

    bool initUsdPrim( const UsdStagePtr& stage, 
                      const SdfPath& path, 
                      bool asOverride );

    UsdPrim     m_primRef;
};

PXR_NAMESPACE_CLOSE_SCOPE

#endif // __GUSD_PACKEDUSDWRAPPER_H__