Added applyEulerFilter to import

lib/mayaUsd/commands/baseImportCommand.cpp

@@ -95,6 +95,11 @@ MSyntax MayaUSDImportCommand::createSyntax()
         MSyntax::kString);
     syntax.makeFlagMultiUse(kImportChaserArgsFlag);
 
+    syntax.addFlag(
+        kApplyEulerFilterFlag,
+        UsdMayaJobImportArgsTokens->applyEulerFilter.GetText(),
+        MSyntax::kBoolean);
+
     // These are additional flags under our control.
     syntax.addFlag(kFileFlag, kFileFlagLong, MSyntax::kString);
     syntax.addFlag(kParentFlag, kParentFlagLong, MSyntax::kString);

lib/mayaUsd/commands/baseImportCommand.h

@@ -52,6 +52,7 @@ class MAYAUSD_CORE_PUBLIC MayaUSDImportCommand : public MPxCommand
     static constexpr auto kUseAsAnimationCacheFlag = "uac";
     static constexpr auto kImportChaserFlag = "chr";
     static constexpr auto kImportChaserArgsFlag = "cha";
+    static constexpr auto kApplyEulerFilterFlag = "aef";
 
     // Short and Long forms of flags defined by this command itself:
     static constexpr auto kFileFlag = "f";

lib/mayaUsd/fileio/importData.cpp

@@ -30,6 +30,7 @@ ImportData::ImportData()
     , fRootPrimPath(kRootPrimPath)
     , fPrimsInScopeCount(0)
     , fSwitchedVariantCount(0)
+    , fApplyEulerFilter(false)
 {
 }
 
@@ -39,6 +40,7 @@ ImportData::ImportData(const std::string& f)
     , fFilename(f)
     , fPrimsInScopeCount(0)
     , fSwitchedVariantCount(0)
+    , fApplyEulerFilter(false)
 {
 }
 
@@ -88,6 +90,10 @@ void ImportData::setRootPrimPath(const std::string& primPath) { fRootPrimPath =
 
 bool ImportData::hasPopulationMask() const { return !fPopMask.IsEmpty(); }
 
+void ImportData::setApplyEulerFilter(bool value) { fApplyEulerFilter = value; }
+
+bool ImportData::applyEulerFilter() const { return fApplyEulerFilter; }
+
 const UsdStagePopulationMask& ImportData::stagePopulationMask() const { return fPopMask; }
 
 void ImportData::setStagePopulationMask(const UsdStagePopulationMask& mask) { fPopMask = mask; }

lib/mayaUsd/fileio/importData.h

@@ -77,6 +77,12 @@ class MAYAUSD_CORE_PUBLIC ImportData
     //! \return True if the USD population mask is not empty.
     bool hasPopulationMask() const;
 
+    //! Apply euler filter to imported rotation animCurves
+    void setApplyEulerFilter(bool value);
+
+    //! \return True if the imported rotation curves should be euler filtered
+    bool applyEulerFilter() const;
+
     //! \return The USD population mask of the stage to use for import.
     const UsdStagePopulationMask& stagePopulationMask() const;
 
@@ -134,8 +140,9 @@ class MAYAUSD_CORE_PUBLIC ImportData
     std::string              fRootPrimPath;
     std::string              fFilename;
 
-    int fPrimsInScopeCount;
-    int fSwitchedVariantCount;
+    int  fPrimsInScopeCount;
+    int  fSwitchedVariantCount;
+    bool fApplyEulerFilter;
 };
 
 } // namespace MAYAUSD_NS_DEF

lib/mayaUsd/fileio/jobs/jobArgs.cpp

@@ -1112,6 +1112,7 @@ UsdMayaJobImportArgs::UsdMayaJobImportArgs(
     , useAsAnimationCache(extractBoolean(userArgs, UsdMayaJobImportArgsTokens->useAsAnimationCache))
     , importWithProxyShapes(importWithProxyShapes)
     , preserveTimeline(extractBoolean(userArgs, UsdMayaJobImportArgsTokens->preserveTimeline))
+    , applyEulerFilter(extractBoolean(userArgs, UsdMayaJobImportArgsTokens->applyEulerFilter))
     , pullImportStage(extractUsdStageRefPtr(userArgs, UsdMayaJobImportArgsTokens->pullImportStage))
     , timeInterval(timeInterval)
     , chaserNames(extractVector<std::string>(userArgs, UsdMayaJobImportArgsTokens->chaser))
@@ -1169,6 +1170,7 @@ const VtDictionary& UsdMayaJobImportArgs::GetDefaultDictionary()
         d[UsdMayaJobImportArgsTokens->preserveTimeline] = false;
         d[UsdMayaJobExportArgsTokens->chaser] = std::vector<VtValue>();
         d[UsdMayaJobExportArgsTokens->chaserArgs] = std::vector<VtValue>();
+        d[UsdMayaJobImportArgsTokens->applyEulerFilter] = false;
 
         // plugInfo.json site defaults.
         // The defaults dict should be correctly-typed, so enable
@@ -1247,6 +1249,7 @@ const VtDictionary& UsdMayaJobImportArgs::GetGuideDictionary()
         d[UsdMayaJobImportArgsTokens->preserveTimeline] = _boolean;
         d[UsdMayaJobExportArgsTokens->chaser] = _stringVector;
         d[UsdMayaJobExportArgsTokens->chaserArgs] = _stringTripletVector;
+        d[UsdMayaJobImportArgsTokens->applyEulerFilter] = _boolean;
     });
 
     return d;
@@ -1334,7 +1337,8 @@ std::ostream& operator<<(std::ostream& out, const UsdMayaJobImportArgs& importAr
         << "timeInterval: " << importArgs.timeInterval << std::endl
         << "useAsAnimationCache: " << TfStringify(importArgs.useAsAnimationCache) << std::endl
         << "preserveTimeline: " << TfStringify(importArgs.preserveTimeline) << std::endl
-        << "importWithProxyShapes: " << TfStringify(importArgs.importWithProxyShapes) << std::endl;
+        << "importWithProxyShapes: " << TfStringify(importArgs.importWithProxyShapes) << std::endl
+        << "applyEulerFilter: " << importArgs.applyEulerFilter << std::endl;
 
     out << "jobContextNames (" << importArgs.jobContextNames.size() << ")" << std::endl;
     for (const std::string& jobContextName : importArgs.jobContextNames) {

lib/mayaUsd/fileio/jobs/jobArgs.h

@@ -155,7 +155,8 @@ TF_DECLARE_PUBLIC_TOKENS(
     (Import) \
     ((Unloaded, "")) \
     (chaser) \
-    (chaserArgs)
+    (chaserArgs) \
+    (applyEulerFilter)
 // clang-format on
 
 TF_DECLARE_PUBLIC_TOKENS(
@@ -338,6 +339,7 @@ struct UsdMayaJobImportArgs
     const bool           useAsAnimationCache;
     const bool           importWithProxyShapes;
     const bool           preserveTimeline;
+    const bool           applyEulerFilter;
     const UsdStageRefPtr pullImportStage;
     /// The interval over which to import animated data.
     /// An empty interval (<tt>GfInterval::IsEmpty()</tt>) means that no

lib/mayaUsd/fileio/translators/translatorSkel.cpp

@@ -30,6 +30,7 @@
 #include <maya/MDGModifier.h>
 #include <maya/MDagModifier.h>
 #include <maya/MDoubleArray.h>
+#include <maya/MEulerRotation.h>
 #include <maya/MFnAnimCurve.h>
 #include <maya/MFnComponentListData.h>
 #include <maya/MFnDependencyNode.h>
@@ -214,7 +215,8 @@ bool _SetTransformAnim(
     MFnDependencyNode&              transformNode,
     const std::vector<GfMatrix4d>&  xforms,
     MTimeArray&                     times,
-    const UsdMayaPrimReaderContext* context)
+    const UsdMayaPrimReaderContext* context,
+    bool                            applyEulerFilter)
 {
     if (xforms.size() != times.length()) {
         TF_WARN("xforms size [%zu] != times size [%du].", xforms.size(), times.length());
@@ -249,6 +251,22 @@ bool _SetTransformAnim(
             }
         }
 
+        if (applyEulerFilter) {
+            MPlug                         rotOrder = transformNode.findPlug("rotateOrder");
+            MEulerRotation::RotationOrder order
+                = static_cast<MEulerRotation::RotationOrder>(rotOrder.asInt());
+
+            MEulerRotation last(rotates[0][0], rotates[1][0], rotates[2][0], order);
+            for (unsigned int i = 1; i < rotates[0].length(); ++i) {
+                MEulerRotation current(rotates[0][i], rotates[1][i], rotates[2][i], order);
+                current.setToClosestSolution(last);
+                rotates[0][i] = current[0];
+                rotates[1][i] = current[1];
+                rotates[2][i] = current[2];
+                last = current;
+            }
+        }
+
         for (int c = 0; c < 3; ++c) {
             if (!_SetAnimPlugData(
                     transformNode, _MayaTokens->translates[c], translates[c], times, context)
@@ -502,7 +520,12 @@ bool _CopyAnimFromSkel(
         MFnDependencyNode skelXformDep(jointContainer, &status);
         CHECK_MSTATUS_AND_RETURN(status, false);
 
-        if (!_SetTransformAnim(skelXformDep, skelLocalXforms, mayaTimes, context)) {
+        if (!_SetTransformAnim(
+                skelXformDep,
+                skelLocalXforms,
+                mayaTimes,
+                context,
+                args.GetJobArguments().applyEulerFilter)) {
             return false;
         }
     }
@@ -540,7 +563,8 @@ bool _CopyAnimFromSkel(
             xforms[i] = samples[i][jointIdx];
         }
 
-        if (!_SetTransformAnim(jointDep, xforms, mayaTimes, context))
+        if (!_SetTransformAnim(
+                jointDep, xforms, mayaTimes, context, args.GetJobArguments().applyEulerFilter))
             return false;
     }
     return true;

lib/mayaUsd/fileio/translators/translatorXformable.cpp

@@ -35,7 +35,9 @@
 #include <maya/MFnAnimCurve.h>
 #include <maya/MFnDependencyNode.h>
 #include <maya/MFnTransform.h>
+#include <maya/MGlobal.h>
 #include <maya/MMatrix.h>
+#include <maya/MObjectArray.h>
 #include <maya/MPlug.h>
 #include <maya/MStatus.h>
 #include <maya/MString.h>
@@ -120,7 +122,7 @@ _getXformOpAsVec3d(const UsdGeomXformOp& xformOp, GfVec3d& value, const UsdTimeC
 }
 
 // Sets the animation curve (a knot per frame) for a given plug/attribute
-static void _setAnimPlugData(
+static MObject _setAnimPlugData(
     MPlug                           plg,
     std::vector<double>&            value,
     MTimeArray&                     timeArray,
@@ -144,6 +146,8 @@ static void _setAnimPlugData(
         TF_RUNTIME_ERROR(
             "Failed to create animation object for attribute: %s", mayaPlgName.asChar());
     }
+
+    return animObj;
 }
 
 // Returns true if the array is not constant
@@ -172,31 +176,57 @@ static void _setMayaAttribute(
     const MString&                  x,
     const MString&                  y,
     const MString&                  z,
-    const UsdMayaPrimReaderContext* context)
+    const UsdMayaPrimReaderContext* context,
+    bool                            applyEulerFilter = false)
 {
+
+    // if have multiple values, and applyEulerFilter, filter the values
+    //
+    if (applyEulerFilter && opName == "rotate") {
+        if (xVal.size() == static_cast<size_t>(timeArray.length()) && xVal.size() == yVal.size()
+            && xVal.size() == zVal.size()) {
+            MPlug                         rotOrder = depFn.findPlug("rotateOrder");
+            MEulerRotation::RotationOrder order
+                = static_cast<MEulerRotation::RotationOrder>(rotOrder.asInt());
+
+            MEulerRotation last(xVal[0], yVal[0], zVal[0], order);
+            for (size_t i = 1; i < xVal.size(); ++i) {
+                MEulerRotation current(xVal[i], yVal[i], zVal[i], order);
+                current.setToClosestSolution(last);
+                xVal[i] = current[0];
+                yVal[i] = current[1];
+                zVal[i] = current[2];
+                last = current;
+            }
+        }
+    }
+
     MPlug plg;
     if (x != "" && !xVal.empty()) {
         plg = depFn.findPlug(opName + x);
         if (!plg.isNull()) {
             plg.setDouble(xVal[0]);
-            if (xVal.size() > 1 && _isArrayVarying(xVal))
+            if (xVal.size() > 1 && (applyEulerFilter || _isArrayVarying(xVal))) {
                 _setAnimPlugData(plg, xVal, timeArray, context);
+            }
         }
     }
     if (y != "" && !yVal.empty()) {
         plg = depFn.findPlug(opName + y);
         if (!plg.isNull()) {
             plg.setDouble(yVal[0]);
-            if (yVal.size() > 1 && _isArrayVarying(yVal))
+            if (yVal.size() > 1 && (applyEulerFilter || _isArrayVarying(yVal))) {
                 _setAnimPlugData(plg, yVal, timeArray, context);
+            }
         }
     }
     if (z != "" && !zVal.empty()) {
         plg = depFn.findPlug(opName + z);
         if (!plg.isNull()) {
             plg.setDouble(zVal[0]);
-            if (zVal.size() > 1 && _isArrayVarying(zVal))
+            if (zVal.size() > 1 && (applyEulerFilter || _isArrayVarying(zVal))) {
                 _setAnimPlugData(plg, zVal, timeArray, context);
+            }
         }
     }
 }
@@ -218,6 +248,9 @@ static bool _pushUSDXformOpToMayaXform(
     std::vector<double> zValue;
     GfVec3d             value;
     std::vector<double> timeSamples;
+
+    bool applyEulerFilter = args.GetJobArguments().applyEulerFilter;
+
     if (!args.GetTimeInterval().IsEmpty()) {
         xformop.GetTimeSamplesInInterval(args.GetTimeInterval(), &timeSamples);
     }
@@ -352,7 +385,8 @@ static bool _pushUSDXformOpToMayaXform(
                 "X",
                 "Y",
                 "Z",
-                context);
+                context,
+                applyEulerFilter && opName == UsdMayaXformStackTokens->rotate);
         }
         return true;
     }

plugin/adsk/plugin/importTranslator.cpp

@@ -97,6 +97,8 @@ MStatus UsdMayaImportTranslator::reader(
                 timeInterval.SetMax(theOption[1].asDouble());
             } else if (argName == "primPath") {
                 importData.setRootPrimPath(theOption[1].asChar());
+            } else if (argName == "applyEulerFilter") {
+                importData.setApplyEulerFilter(theOption[1].asInt() != 0);
             } else {
                 userArgs[argName] = UsdMayaUtil::ParseArgumentValue(
                     argName, theOption[1].asChar(), UsdMayaJobImportArgs::GetGuideDictionary());

test/lib/usd/translators/CMakeLists.txt

@@ -76,6 +76,7 @@ set(TEST_SCRIPT_FILES
     testUsdImportSkeleton.py
     testUsdImportXforms.py
     testUsdImportXformAnim.py
+    testUsdImportEulerFilter.py
     testUsdMayaAdaptor.py
     testUsdMayaAdaptorGeom.py
     testUsdMayaAdaptorMetadata.py