All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
instancerWriter.h
Go to the documentation of this file.
1 //
2 // Copyright 2017 Pixar
3 //
4 // Licensed under the Apache License, Version 2.0 (the "Apache License")
5 // with the following modification; you may not use this file except in
6 // compliance with the Apache License and the following modification to it:
7 // Section 6. Trademarks. is deleted and replaced with:
8 //
9 // 6. Trademarks. This License does not grant permission to use the trade
10 // names, trademarks, service marks, or product names of the Licensor
11 // and its affiliates, except as required to comply with Section 4(c) of
12 // the License and to reproduce the content of the NOTICE file.
13 //
14 // You may obtain a copy of the Apache License at
15 //
16 // http://www.apache.org/licenses/LICENSE-2.0
17 //
18 // Unless required by applicable law or agreed to in writing, software
19 // distributed under the Apache License with the above modification is
20 // distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
21 // KIND, either express or implied. See the Apache License for the specific
22 // language governing permissions and limitations under the Apache License.
23 //
24 #ifndef PXRUSDTRANSLATORS_INSTANCER_WRITER_H
25 #define PXRUSDTRANSLATORS_INSTANCER_WRITER_H
26 
28 
29 #include "pxr/pxr.h"
31 
32 #include "usdMaya/primWriter.h"
34 
35 #include "pxr/usd/sdf/path.h"
36 #include "pxr/usd/usd/timeCode.h"
37 #include "pxr/usd/usdGeom/pointInstancer.h"
38 #include "pxr/usd/usdGeom/xformOp.h"
39 
40 #include <maya/MDagPath.h>
41 #include <maya/MFnDependencyNode.h>
42 
43 #include <vector>
44 
45 
46 PXR_NAMESPACE_OPEN_SCOPE
47 
48 
62 {
63 public:
65  const MFnDependencyNode& depNodeFn,
66  const SdfPath& usdPath,
67  UsdMayaWriteJobContext& jobCtx);
68 
69  void Write(const UsdTimeCode& usdTime) override;
70  void PostExport() override;
71  bool ShouldPruneChildren() const override;
72  const SdfPathVector& GetModelPaths() const override;
73 
74 protected:
75  bool writeInstancerAttrs(
76  const UsdTimeCode& usdTime,
77  const UsdGeomPointInstancer& instancer);
78 
79 private:
80  bool _NeedsExtraInstancerTranslate(
81  const MDagPath& prototypeDagPath,
82  bool* instancerTranslateAnimated) const;
83 
87  struct _TranslateOpData {
88  MDagPath mayaPath;
89  UsdGeomXformOp op;
90  bool isAnimated;
91  };
92 
94  int _numPrototypes;
97  std::vector<UsdMayaPrimWriterSharedPtr> _prototypeWriters;
100  std::vector<_TranslateOpData> _instancerTranslateOps;
102  SdfPathVector _modelPaths;
103 };
104 
105 
106 PXR_NAMESPACE_CLOSE_SCOPE
107 
108 
109 #endif
const SdfPathVector & GetModelPaths() const override
Gets all of the exported prim paths that are potentially models, i.e.
Provides basic functionality and access to shared data for UsdMayaPrimWriters.
Schema wrapper for UsdAttribute for authoring and computing transformation operations, as consumed by UsdGeomXformable schema.
Definition: xformOp.h:111
PXRUSDMAYA_API bool isAnimated(const MObject &mayaObject, const bool checkParent=false)
Determine if the Maya object mayaObject is animated or not.
Represent a time value, which may be either numeric, holding a double value, or a sentinel value UsdT...
Definition: timeCode.h:85
A path value used to locate objects in layers or scenegraphs.
Definition: path.h:287
void Write(const UsdTimeCode &usdTime) override
Main export function that runs when the traversal hits the node.
bool ShouldPruneChildren() const override
Whether the traversal routine using this prim writer should skip all of the Maya node&#39;s descendants w...
Exporter for Maya particle instancer nodes (MFnInstancer).
Encodes vectorized instancing of multiple, potentially animated, prototypes (object/instance masters)...
Writes transforms and serves as the base class for custom transform writers.
void PostExport() override
Post export function that runs before saving the stage.