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samplingUtils.h
1 //
2 // Copyright 2019 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
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11 // and its affiliates, except as required to comply with Section 4(c) of
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14 // You may obtain a copy of the Apache License at
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16 // http://www.apache.org/licenses/LICENSE-2.0
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24 #ifndef USDGEOM_SAMPLINGUTILS_H
25 #define USDGEOM_SAMPLINGUTILS_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/base/vt/types.h"
29 
30 PXR_NAMESPACE_OPEN_SCOPE
31 
32 class UsdAttribute;
33 class UsdPrim;
34 class UsdTimeCode;
35 
36 
42 bool
43 UsdGeom_GetPositionsVelocitiesAndAccelerations(
44  const UsdAttribute& positionsAttr,
45  const UsdAttribute& velocitiesAttr,
46  const UsdAttribute& accelerationsAttr,
47  UsdTimeCode baseTime,
48  size_t expectedNumPositions,
49  VtVec3fArray* positions,
50  VtVec3fArray* velocities,
51  UsdTimeCode* velocitiesSampleTime,
52  VtVec3fArray* accelerations,
53  float* velocityScale,
54  UsdPrim const &prim);
55 
57 bool
58 UsdGeom_GetScales(
59  const UsdAttribute& scalesAttr,
60  const UsdTimeCode baseTime,
61  size_t expectedNumScales,
62  VtVec3fArray* scales,
63  UsdPrim const &prim);
64 
65 
71 bool
72 UsdGeom_GetOrientationsAndAngularVelocities(
73  const UsdAttribute& orientationsAttr,
74  const UsdAttribute& angularVelocitiesAttr,
75  UsdTimeCode baseTime,
76  size_t expectedNumOrientations,
77  VtQuathArray* orientations,
78  VtVec3fArray* angularVelocities,
79  UsdTimeCode* angularVelocitiesSampleTime,
80  UsdPrim const &prim);
81 
84 float
85 UsdGeom_CalculateTimeDelta(
86  const float velocityScale,
87  const UsdTimeCode time,
88  const UsdTimeCode sampleTime,
89  const double timeCodesPerSecond);
90 
91 
92 PXR_NAMESPACE_CLOSE_SCOPE
93 
94 #endif
Scenegraph object for authoring and retrieving numeric, string, and array valued data, sampled over time.
Definition: attribute.h:176
Represent a time value, which may be either numeric, holding a double value, or a sentinel value UsdT...
Definition: timeCode.h:85
UsdPrim is the sole persistent scenegraph object on a UsdStage, and is the embodiment of a "Prim" as ...
Definition: prim.h:131