nurbsCurvesAdapter.h

Go to the documentation of this file.

//
// Copyright 2019 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_USD_IMAGING_USD_IMAGING_NURBS_CURVES_ADAPTER_H
#define PXR_USD_IMAGING_USD_IMAGING_NURBS_CURVES_ADAPTER_H

/// \file usdImaging/nurbsCurvesAdapter.h

#include "pxr/pxr.h"
#include "pxr/usdImaging/usdImaging/api.h"
#include "pxr/usdImaging/usdImaging/primAdapter.h"
#include "pxr/usdImaging/usdImaging/gprimAdapter.h"

PXR_NAMESPACE_OPEN_SCOPE


/// \class UsdImagingNurbsCurvesAdapter
///
/// Delegate support for UsdGeomNurbsCurves.
///
class UsdImagingNurbsCurvesAdapter : public UsdImagingGprimAdapter 
{
public:
    using BaseAdapter = UsdImagingGprimAdapter;

    UsdImagingNurbsCurvesAdapter()
        : UsdImagingGprimAdapter()
    {}

    USDIMAGING_API
    ~UsdImagingNurbsCurvesAdapter() override;

    // ---------------------------------------------------------------------- //
    /// \name Scene Index Support
    // ---------------------------------------------------------------------- //

    USDIMAGING_API
    TfTokenVector GetImagingSubprims(UsdPrim const& prim) override;

    USDIMAGING_API
    TfToken GetImagingSubprimType(
            UsdPrim const& prim,
            TfToken const& subprim) override;

    USDIMAGING_API
    HdContainerDataSourceHandle GetImagingSubprimData(
            UsdPrim const& prim,
            TfToken const& subprim,
            const UsdImagingDataSourceStageGlobals &stageGlobals) override;

    USDIMAGING_API
    HdDataSourceLocatorSet InvalidateImagingSubprim(
        UsdPrim const& prim,
        TfToken const& subprim,
        TfTokenVector const& properties,
        UsdImagingPropertyInvalidationType invalidationType) override;

    // ---------------------------------------------------------------------- //
    /// \name Initialization
    // ---------------------------------------------------------------------- //

    USDIMAGING_API
    SdfPath Populate(
        UsdPrim const& prim,
        UsdImagingIndexProxy* index,
        UsdImagingInstancerContext const* instancerContext = nullptr) override;

    USDIMAGING_API
    bool IsSupported(UsdImagingIndexProxy const* index) const override;

    // ---------------------------------------------------------------------- //
    /// \name Parallel Setup and Resolve
    // ---------------------------------------------------------------------- //

    /// Thread Safe.
    USDIMAGING_API
    void TrackVariability(
        UsdPrim const& prim,
        SdfPath const& cachePath,
        HdDirtyBits* timeVaryingBits,
        UsdImagingInstancerContext const* instancerContext = nullptr) 
            const override;

    /// Thread Safe.
    USDIMAGING_API
    void UpdateForTime(
        UsdPrim const& prim,
        SdfPath const& cachePath, 
        UsdTimeCode time,
        HdDirtyBits requestedBits,
        UsdImagingInstancerContext const* 
            instancerContext = nullptr) const override;

    USDIMAGING_API
    HdDirtyBits ProcessPropertyChange(UsdPrim const& prim,
                                      SdfPath const& cachePath,
                                      TfToken const& propertyName) override;

    // ---------------------------------------------------------------------- //
    /// \name Data access
    // ---------------------------------------------------------------------- //

    USDIMAGING_API
    VtValue GetTopology(UsdPrim const& prim,
                        SdfPath const& cachePath,
                        UsdTimeCode time) const override;

    USDIMAGING_API
    VtValue Get(UsdPrim const& prim,
                SdfPath const& cachePath,
                TfToken const& key,
                UsdTimeCode time,
                VtIntArray *outIndices) const override;

protected: 
    USDIMAGING_API
    bool _IsBuiltinPrimvar(TfToken const& primvarName) const override;

};

PXR_NAMESPACE_CLOSE_SCOPE

#endif // PXR_USD_IMAGING_USD_IMAGING_NURBS_CURVES_ADAPTER_H