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meshWrapper.h
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2 // Copyright 2017 Pixar
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24 #ifndef __GUSD_MESHWRAPPER_H__
25 #define __GUSD_MESHWRAPPER_H__
26 
27 #include "primWrapper.h"
28 
29 #include "pxr/pxr.h"
30 #include "pxr/usd/usdGeom/mesh.h"
31 
32 class GT_PrimSubdivisionMesh;
33 
34 PXR_NAMESPACE_OPEN_SCOPE
35 
36 class GusdMeshWrapper : public GusdPrimWrapper
37 {
38 public:
39  GusdMeshWrapper(
40  const GT_PrimitiveHandle& sourcePrim,
41  const UsdStagePtr& stage,
42  const SdfPath& path,
43  const GusdContext& ctxt,
44  bool isOverride = false );
45 
46  GusdMeshWrapper(
47  const UsdGeomMesh& mesh,
48  UsdTimeCode t,
49  GusdPurposeSet purposes );
50 
51  GusdMeshWrapper( const GusdMeshWrapper &in );
52 
53  virtual ~GusdMeshWrapper();
54 
55  // GusdPrimWrapper interface -----------------------------------------------
56 
57 public:
58 
59  virtual const UsdGeomImageable getUsdPrim() const override { return m_usdMesh; }
60 
61  virtual bool redefine(
62  const UsdStagePtr& stage,
63  const SdfPath& path,
64  const GusdContext& ctxt,
65  const GT_PrimitiveHandle& sourcePrim ) override;
66 
67  virtual const char* className() const override;
68 
69  virtual void enlargeBounds(UT_BoundingBox boxes[], int nsegments) const override;
70 
71  virtual int getMotionSegments() const override;
72 
73  virtual int64 getMemoryUsage() const override;
74 
75  virtual GT_PrimitiveHandle doSoftCopy() const override;
76 
77  virtual bool
78  updateFromGTPrim(const GT_PrimitiveHandle& sourcePrim,
79  const UT_Matrix4D& houXform,
80  const GusdContext& ctxt,
81  GusdSimpleXformCache& xformCache) override;
82 
83  virtual bool isValid() const override;
84 
85  virtual bool refine(GT_Refine& refiner,
86  const GT_RefineParms* parms=NULL) const override;
87 
88  // -------------------------------------------------------------------------
89 
90 public:
91 
92  bool setSubdivisionScheme(const TfToken& scheme);
93 
94  TfToken getSubdivisionScheme() const;
95 
96  static GT_PrimitiveHandle
97  defineForWrite(const GT_PrimitiveHandle& sourcePrim,
98  const UsdStagePtr& stage,
99  const SdfPath& path,
100  const GusdContext& ctxt);
101 
102  static GT_PrimitiveHandle
103  defineForRead( const UsdGeomImageable& sourcePrim,
104  UsdTimeCode time,
105  GusdPurposeSet purposes );
106 
107 private:
108 
109  GT_PrimitiveHandle
110  _RefineSubdiv(GT_Refine& refiner,
111  const TfToken& subdScheme,
112  const GT_DataArrayHandle& gtVertexCounts,
113  const GT_DataArrayHandle& gtIndices,
114  const GT_AttributeListHandle& gtPointAttrs,
115  const GT_AttributeListHandle& gtVertexAttrs,
116  const GT_AttributeListHandle& gtUniformAttrs,
117  const GT_AttributeListHandle& gtDetailAttrs,
118  const GT_RefineParms* parms) const;
119 
120  void _RefineSubdivCorners(GT_PrimSubdivisionMesh& mesh,
121  GT_Refine& refiner) const;
122 
123  void _RefineSubdivCreases(GT_PrimSubdivisionMesh& mesh,
124  GT_Refine& refiner) const;
125 
126  void _RefineSubdivHoles(GT_PrimSubdivisionMesh& mesh,
127  GT_Refine& refiner) const;
128 
129  void _RefineSubdivOsdTags(GT_PrimSubdivisionMesh& mesh,
130  GT_Refine& refiner) const;
131 
132  bool initUsdPrim(const UsdStagePtr& stage,
133  const SdfPath& path,
134  bool asOverride);
135 
136  void initialize( const GusdContext& ctxt, const GT_PrimitiveHandle& refPrim );
137 
138  UsdGeomMesh m_usdMesh;
139  bool m_forceCreateNewGeo;
140 };
141 
142 PXR_NAMESPACE_CLOSE_SCOPE
143 
144 #endif // __GUSD_MESHWRAPPER_H__
145 
A GT_Primitive that wraps a USD Prim.
Definition: primWrapper.h:89
virtual bool updateFromGTPrim(const GT_PrimitiveHandle &sourcePrim, const UT_Matrix4D &houXform, const GusdContext &ctxt, GusdSimpleXformCache &xformCache)
Fill a USD prim's attribute samples for a frame from the attributes in a GT primitive.
virtual bool redefine(const UsdStagePtr &stage, const SdfPath &path, const GusdContext &ctxt, const GT_PrimitiveHandle &sourcePrim)
Create a new USD prim to match GT primitive.
Token for efficient comparison, assignment, and hashing of known strings.
Definition: token.h:89
Represent a time value, which may be either numeric, holding a double value, or a sentinel value UsdT...
Definition: timeCode.h:85
static GT_PrimitiveHandle defineForWrite(const GT_PrimitiveHandle &sourcePrim, const UsdStagePtr &stage, const SdfPath &path, const GusdContext &ctxt)
Given a GT_Primitive, create a USD prim of the proper type.
A GusdContext structure is created by the ROPs that write USD files and passed to the GusdPrimWrapper...
Definition: context.h:46
A path value used to locate objects in layers or scenegraphs.
Definition: path.h:287
virtual bool isValid() const
Return true if the underlying USD prim is valid.
static GT_PrimitiveHandle defineForRead(const UsdGeomImageable &sourcePrim, UsdTimeCode time, GusdPurposeSet purposes)
Given a USD prim, create a GusdPrimWrapper of the proper type.
Encodes a mesh surface whose definition and feature-set will converge with that of OpenSubdiv...
Definition: mesh.h:86
Base class for all prims that may require rendering or visualization of some sort.
Definition: imageable.h:74