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hermiteCurvesAdapter.h
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2 // Copyright 2020 Pixar
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24 #ifndef PXR_USD_IMAGING_USD_IMAGING_HERMITE_CURVES_ADAPTER_H
25 #define PXR_USD_IMAGING_USD_IMAGING_HERMITE_CURVES_ADAPTER_H
26 
27 /// \file usdImaging/hermiteCurvesAdapter.h
28 
29 #include "pxr/pxr.h"
33 
35 
36 
37 /// \class UsdImagingHermiteCurvesAdapter
38 ///
39 /// Delegate support for UsdGeomHermiteCurves.
40 ///
41 /// As Hydra doesn't support imaging of Hermite curves, we render
42 /// the points as linearly interpolated BasisCurves, ignoring tangents,
43 /// widths, and normals.
44 ///
46 public:
48 
51  {}
54 
57  UsdPrim const& prim,
59  UsdImagingInstancerContext const* instancerContext = nullptr) override;
60 
62  bool IsSupported(UsdImagingIndexProxy const* index) const override;
63 
64  // ---------------------------------------------------------------------- //
65  /// \name Parallel Setup and Resolve
66  // ---------------------------------------------------------------------- //
67 
68  /// Thread Safe.
70  void TrackVariability(
71  UsdPrim const& prim,
72  SdfPath const& cachePath,
73  HdDirtyBits* timeVaryingBits,
74  UsdImagingInstancerContext const* instancerContext = nullptr)
75  const override;
76 
77  /// Thread Safe.
79  void UpdateForTime(
80  UsdPrim const& prim,
81  SdfPath const& cachePath,
83  HdDirtyBits requestedBits,
84  UsdImagingInstancerContext const* instancerContext = nullptr)
85  const override;
86 
87  // ---------------------------------------------------------------------- //
88  /// \name Change Processing
89  // ---------------------------------------------------------------------- //
90 
93  SdfPath const& cachePath,
94  TfToken const& propertyName) override;
95 
96 protected:
98  bool _IsBuiltinPrimvar(TfToken const& primvarName) const override;
99 
100 private:
101  void _GetBasisCurvesTopology(UsdPrim const& prim,
102  VtValue* topoHolder,
103  UsdTimeCode time) const;
104 };
105 
106 
108 
109 #endif // PXR_USD_IMAGING_USD_IMAGING_HERMITE_CURVES_ADAPTER_H
virtual USDIMAGING_API ~UsdImagingHermiteCurvesAdapter()
#define USDIMAGING_API
Definition: api.h:40
GT_API const UT_StringHolder time
GLuint index
Definition: glew.h:1814
USDIMAGING_API SdfPath Populate(UsdPrim const &prim, UsdImagingIndexProxy *index, UsdImagingInstancerContext const *instancerContext=nullptr) override
uint32_t HdDirtyBits
Definition: types.h:127
USDIMAGING_API HdDirtyBits ProcessPropertyChange(UsdPrim const &prim, SdfPath const &cachePath, TfToken const &propertyName) override
UsdImagingGprimAdapter BaseAdapter
Definition: token.h:87
Definition: prim.h:132
Definition: path.h:288
USDIMAGING_API bool IsSupported(UsdImagingIndexProxy const *index) const override
Returns true if the adapter can be populated into the target index.
PXR_NAMESPACE_CLOSE_SCOPE PXR_NAMESPACE_OPEN_SCOPE
Definition: path.h:1346
USDIMAGING_API bool _IsBuiltinPrimvar(TfToken const &primvarName) const override
#define PXR_NAMESPACE_CLOSE_SCOPE
Definition: pxr.h:91
USDIMAGING_API void TrackVariability(UsdPrim const &prim, SdfPath const &cachePath, HdDirtyBits *timeVaryingBits, UsdImagingInstancerContext const *instancerContext=nullptr) const override
Thread Safe.
Definition: value.h:174
USDIMAGING_API void UpdateForTime(UsdPrim const &prim, SdfPath const &cachePath, UsdTimeCode time, HdDirtyBits requestedBits, UsdImagingInstancerContext const *instancerContext=nullptr) const override
Thread Safe.