piPrototypePropagatingSceneIndex.h

//
// Copyright 2022 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 PXR_USD_IMAGING_USD_IMAGING_PI_PROTOTYPE_PROPAGATING_SCENE_INDEX_H
#define PXR_USD_IMAGING_USD_IMAGING_PI_PROTOTYPE_PROPAGATING_SCENE_INDEX_H
 
#include "pxr/usdImaging/usdImaging/api.h"
 
#include "pxr/imaging/hd/filteringSceneIndex.h"
 
PXR_NAMESPACE_OPEN_SCOPE
 
TF_DECLARE_REF_PTRS(UsdImagingPiPrototypePropagatingSceneIndex);
 
namespace UsdImagingPiPrototypePropagatingSceneIndex_Impl
{
using _ContextSharedPtr = std::shared_ptr<struct _Context>;
using _InstancerObserverUniquePtr = std::unique_ptr<class _InstancerObserver>;
}
 
class UsdImagingPiPrototypePropagatingSceneIndex final
                                : public HdFilteringSceneIndexBase
{
public:
    USDIMAGING_API
    static UsdImagingPiPrototypePropagatingSceneIndexRefPtr New(
        HdSceneIndexBaseRefPtr const &inputSceneIndex);
 
    USDIMAGING_API
    HdSceneIndexPrim GetPrim(const SdfPath &primPath) const override;
 
    USDIMAGING_API
    SdfPathVector GetChildPrimPaths(const SdfPath &primPath) const override;
 
    USDIMAGING_API
    std::vector<HdSceneIndexBaseRefPtr> GetInputScenes() const override;
 
private:
    UsdImagingPiPrototypePropagatingSceneIndex(
        const HdSceneIndexBaseRefPtr &inputSceneIndex);
 
    friend class _MergingSceneIndexObserver;
    class _MergingSceneIndexObserver : public HdSceneIndexObserver
    {
    public:
        _MergingSceneIndexObserver(
            UsdImagingPiPrototypePropagatingSceneIndex * owner);
 
        void PrimsAdded(
            const HdSceneIndexBase &sender,
            const AddedPrimEntries &entries) override;
        void PrimsDirtied(
            const HdSceneIndexBase &sender,
            const DirtiedPrimEntries &entries) override;
        void PrimsRemoved(
            const HdSceneIndexBase &sender,
            const RemovedPrimEntries &entries) override;
        void PrimsRenamed(
            const HdSceneIndexBase &sender,
            const RenamedPrimEntries &entries) override;
 
    private:
        UsdImagingPiPrototypePropagatingSceneIndex * const _owner;
    };
 
    UsdImagingPiPrototypePropagatingSceneIndex_Impl::
    _ContextSharedPtr const _context;
 
    _MergingSceneIndexObserver _mergingSceneIndexObserver;
 
    UsdImagingPiPrototypePropagatingSceneIndex_Impl::
    _InstancerObserverUniquePtr const _instancerObserver;
};
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif