Ufe bbox support dev

lib/CMakeLists.txt

@@ -226,6 +226,8 @@ if(UFE_FOUND)
             ufe/UsdAttribute.cpp
             ufe/UsdAttributes.cpp
             ufe/UsdAttributesHandler.cpp
+            ufe/UsdObject3d.cpp
+            ufe/UsdObject3dHandler.cpp
             ufe/UsdUndoCreateGroupCommand.cpp
         )
     endif()
@@ -365,6 +367,8 @@ if(UFE_FOUND)
             ufe/UsdAttribute.h
             ufe/UsdAttributes.h
             ufe/UsdAttributesHandler.h
+            ufe/UsdObject3d.h
+            ufe/UsdObject3dHandler.h
             ufe/UsdUndoCreateGroupCommand.h
         )
     endif()

lib/ufe/Global.cpp

@@ -30,6 +30,7 @@
 #ifdef UFE_V2_FEATURES_AVAILABLE
 // Note: must come after include of ufe files so we have the define.
 #include "UsdAttributesHandler.h"
+#include "UsdObject3dHandler.h"
 #endif
 
 #include <string>
@@ -93,14 +94,13 @@ MStatus initialize()
 	auto usdHierHandler = UsdHierarchyHandler::create();
 	auto usdTrans3dHandler = UsdTransform3dHandler::create();
 	auto usdSceneItemOpsHandler = UsdSceneItemOpsHandler::create();
-#ifdef UFE_V2_FEATURES_AVAILABLE
-	auto usdAttributesHandler = UsdAttributesHandler::create();
-	g_USDRtid = Ufe::RunTimeMgr::instance().register_(
-		kUSDRunTimeName, usdHierHandler, usdTrans3dHandler, usdSceneItemOpsHandler, usdAttributesHandler, nullptr);
-#else
+	UFE_V2(auto usdAttributesHandler = UsdAttributesHandler::create();)
+	UFE_V2(auto usdObject3dHandler = UsdObject3dHandler::create();)
 	g_USDRtid = Ufe::RunTimeMgr::instance().register_(
-		kUSDRunTimeName, usdHierHandler, usdTrans3dHandler, usdSceneItemOpsHandler);
-#endif
+		kUSDRunTimeName, usdHierHandler, usdTrans3dHandler, 
+        usdSceneItemOpsHandler
+        UFE_V2(, usdAttributesHandler, usdObject3dHandler));
+
 #if !defined(NDEBUG)
 	assert(g_USDRtid != 0);
 #endif

lib/ufe/UsdObject3d.cpp

@@ -0,0 +1,73 @@
+// ===========================================================================
+// Copyright 2019 Autodesk, Inc. All rights reserved.
+//
+// Use of this software is subject to the terms of the Autodesk license
+// agreement provided at the time of installation or download, or which
+// otherwise accompanies this software in either electronic or hard copy form.
+// ===========================================================================
+
+#include "UsdObject3d.h"
+#include "Utils.h"
+
+#include "ufe/types.h"
+
+#include "pxr/usd/usdGeom/bboxCache.h"
+#include "pxr/usd/usd/timeCode.h"
+
+namespace {
+Ufe::Vector3d toVector3d(const GfVec3d& v)
+{
+    return Ufe::Vector3d(v[0], v[1], v[2]);
+}
+
+}
+
+MAYAUSD_NS_DEF {
+namespace ufe {
+
+UsdObject3d::UsdObject3d(const UsdSceneItem::Ptr& item)
+    : Ufe::Object3d(), fItem(item), fPrim(item->prim()) {}
+
+UsdObject3d::~UsdObject3d() {}
+
+/*static*/
+UsdObject3d::Ptr UsdObject3d::create(const UsdSceneItem::Ptr& item)
+{
+	return std::make_shared<UsdObject3d>(item);
+}
+
+//------------------------------------------------------------------------------
+// Ufe::Object3d overrides
+//------------------------------------------------------------------------------
+
+Ufe::SceneItem::Ptr UsdObject3d::sceneItem() const
+{
+	return fItem;
+}
+
+Ufe::BBox3d UsdObject3d::boundingBox() const
+{
+    // Use USD to compute the bounding box.  This is strictly speaking
+    // incorrect, as a USD node may eventually have a Maya child, given the
+    // full generality of UFE paths.  However, as of 24-Oct-2019, this does not
+    // exist.  To support this use case,
+    // UsdGeomBoundable::ComputeExtentFromPlugins() allows a plugin to register
+    // an extent computation; this should be explored.
+    //
+    // UsdGeomImageable::ComputeLocalBound() just calls UsdGeomBBoxCache, so do
+    // this here as well.
+    //
+    // Would be nice to know if the object extents are animated or not, so
+    // we can bypass time computation and simply use UsdTimeCode::Default()
+    // as the time.
+    TfTokenVector purposes{UsdGeomTokens->default_};
+    UsdGeomBBoxCache bboxCache(getTime(sceneItem()->path()), purposes);
+    auto bbox = bboxCache.ComputeLocalBound(fPrim);
+    auto range = bbox.GetRange();
+    auto min = range.GetMin();
+    auto max = range.GetMax();
+	return Ufe::BBox3d(toVector3d(min), toVector3d(max));
+}
+
+} // namespace ufe
+} // namespace MayaUsd

lib/ufe/UsdObject3d.h

@@ -0,0 +1,50 @@
+// ===========================================================================
+// Copyright 2019 Autodesk, Inc. All rights reserved.
+//
+// Use of this software is subject to the terms of the Autodesk license
+// agreement provided at the time of installation or download, or which
+// otherwise accompanies this software in either electronic or hard copy form.
+// ===========================================================================
+#pragma once
+
+#include "../base/api.h"
+#include "UsdSceneItem.h"
+
+#include "ufe/object3d.h"
+
+MAYAUSD_NS_DEF {
+namespace ufe {
+
+//! \brief USD run-time 3D object interface
+/*!
+    This class implements the Object3d interface for USD prims.
+*/
+class MAYAUSD_CORE_PUBLIC UsdObject3d : public Ufe::Object3d
+{
+public:
+	using Ptr = std::shared_ptr<UsdObject3d>;
+
+	UsdObject3d(const UsdSceneItem::Ptr& item);
+	~UsdObject3d() override;
+
+	// Delete the copy/move constructors assignment operators.
+	UsdObject3d(const UsdObject3d&) = delete;
+	UsdObject3d& operator=(const UsdObject3d&) = delete;
+	UsdObject3d(UsdObject3d&&) = delete;
+	UsdObject3d& operator=(UsdObject3d&&) = delete;
+
+	//! Create a UsdObject3d.
+	static UsdObject3d::Ptr create(const UsdSceneItem::Ptr& item);
+
+	// Ufe::Object3d overrides
+	Ufe::SceneItem::Ptr sceneItem() const override;
+    Ufe::BBox3d boundingBox() const override;
+
+private:
+	UsdSceneItem::Ptr fItem;
+	UsdPrim fPrim;
+
+}; // UsdObject3d
+
+} // namespace ufe
+} // namespace MayaUsd

lib/ufe/UsdObject3dHandler.cpp

@@ -0,0 +1,39 @@
+// ===========================================================================
+// Copyright 2019 Autodesk, Inc. All rights reserved.
+//
+// Use of this software is subject to the terms of the Autodesk license
+// agreement provided at the time of installation or download, or which
+// otherwise accompanies this software in either electronic or hard copy form.
+// ===========================================================================
+
+#include "UsdObject3dHandler.h"
+#include "UsdSceneItem.h"
+
+MAYAUSD_NS_DEF {
+namespace ufe {
+
+UsdObject3dHandler::UsdObject3dHandler() : Ufe::Object3dHandler() {}
+
+UsdObject3dHandler::~UsdObject3dHandler() {}
+
+/*static*/
+UsdObject3dHandler::Ptr UsdObject3dHandler::create()
+{
+	return std::make_shared<UsdObject3dHandler>();
+}
+
+//------------------------------------------------------------------------------
+// UsdObject3dHandler overrides
+//------------------------------------------------------------------------------
+
+Ufe::Object3d::Ptr UsdObject3dHandler::object3d(const Ufe::SceneItem::Ptr& item) const
+{
+	UsdSceneItem::Ptr usdItem = std::dynamic_pointer_cast<UsdSceneItem>(item);
+#if !defined(NDEBUG)
+	assert(usdItem);
+#endif
+	return UsdObject3d::create(usdItem);
+}
+
+} // namespace ufe
+} // namespace MayaUsd

lib/ufe/UsdObject3dHandler.h

@@ -0,0 +1,46 @@
+// ===========================================================================
+// Copyright 2019 Autodesk, Inc. All rights reserved.
+//
+// Use of this software is subject to the terms of the Autodesk license
+// agreement provided at the time of installation or download, or which
+// otherwise accompanies this software in either electronic or hard copy form.
+// ===========================================================================
+#pragma once
+
+#include "../base/api.h"
+
+#include "UsdObject3d.h"
+
+#include "ufe/object3dHandler.h"
+
+MAYAUSD_NS_DEF {
+namespace ufe {
+
+//! \brief USD run-time 3D object handler.
+/*!
+	Factory object for Object3d interfaces.
+ */
+class MAYAUSD_CORE_PUBLIC UsdObject3dHandler : public Ufe::Object3dHandler
+{
+public:
+	typedef std::shared_ptr<UsdObject3dHandler> Ptr;
+
+	UsdObject3dHandler();
+	~UsdObject3dHandler() override;
+
+	// Delete the copy/move constructors assignment operators.
+	UsdObject3dHandler(const UsdObject3dHandler&) = delete;
+	UsdObject3dHandler& operator=(const UsdObject3dHandler&) = delete;
+	UsdObject3dHandler(UsdObject3dHandler&&) = delete;
+	UsdObject3dHandler& operator=(UsdObject3dHandler&&) = delete;
+
+	//! Create a UsdObject3dHandler.
+	static UsdObject3dHandler::Ptr create();
+
+	// UsdObject3dHandler overrides
+	Ufe::Object3d::Ptr object3d(const Ufe::SceneItem::Ptr& item) const override;
+
+}; // UsdObject3dHandler
+
+} // namespace ufe
+} // namespace MayaUsd

lib/ufe/Utils.cpp

@@ -18,12 +18,15 @@
 #include "private/Utils.h"
 #include "UsdStageMap.h"
 #include "ProxyShapeHandler.h"
+#include "../nodes/proxyShapeBase.h"
 
 #include <pxr/base/tf/hashset.h>
 #include <pxr/usd/usd/stage.h>
 
 #include <maya/MGlobal.h>
 #include <maya/MSelectionList.h>
+#include <maya/MObjectHandle.h>
+#include <maya/MFnDependencyNode.h>
 
 #include <cassert>
 #include <string>
@@ -218,5 +221,45 @@ MDagPath nameToDagPath(const std::string& name)
 	return dag;
 }
 
+UsdTimeCode getTime(const Ufe::Path& path)
+{
+    // Path should not be empty.
+    if (!TF_VERIFY(!path.empty())) {
+        return UsdTimeCode::Default();
+    }
+
+    // Get the time from the proxy shape.  This will be the tail component of
+    // the first path segment.
+    auto proxyShapePath = Ufe::Path(path.getSegments()[0]);
+
+    // Keep a single-element path to MObject cache, as all USD prims in a stage
+    // share the same proxy shape.
+    static std::pair<Ufe::Path, MObjectHandle> cache;
+
+    MObject proxyShapeObj;
+
+    if (cache.first == proxyShapePath && cache.second.isValid()) {
+        proxyShapeObj = cache.second.object();
+    }
+    else {
+        // Not found in the cache, or no longer valid.  Get the proxy shape
+        // MObject from its path, and put it in the cache.  Pop the head of the
+        // UFE path to get rid of "|world", which is implicit in Maya.
+        auto proxyShapeDagPath = nameToDagPath(
+            proxyShapePath.popHead().string());
+        TF_VERIFY(proxyShapeDagPath.isValid());
+        proxyShapeObj = proxyShapeDagPath.node();
+        cache = std::pair<Ufe::Path, MObjectHandle>(
+            proxyShapePath, MObjectHandle(proxyShapeObj));
+    }
+
+    // Get time from the proxy shape.
+    MFnDependencyNode fn(proxyShapeObj);
+    auto proxyShape = dynamic_cast<MayaUsdProxyShapeBase*>(fn.userNode());
+    TF_VERIFY(proxyShape);
+
+    return proxyShape->getTime();
+}
+
 } // namespace ufe
 } // namespace MayaUsd

lib/ufe/Utils.h

@@ -23,6 +23,7 @@
 #include <ufe/pathSegment.h>
 
 #include <pxr/usd/usd/prim.h>
+#include <pxr/usd/usd/timeCode.h>
 #include <pxr/usd/sdf/layer.h>
 #include <pxr/base/tf/token.h>
 
@@ -81,5 +82,10 @@ Ufe::PathSegment dagPathToPathSegment(const MDagPath& dagPath);
 MAYAUSD_CORE_PUBLIC
 MDagPath nameToDagPath(const std::string& name);
 
+//! Get the time along the argument path.  A gateway node (i.e. proxy shape)
+//! along the path can transform Maya's time (e.g. with scale and offset).
+MAYAUSD_CORE_PUBLIC
+UsdTimeCode getTime(const Ufe::Path& path);
+
 } // namespace ufe
 } // namespace MayaUsd

test/lib/ufe/CMakeLists.txt

@@ -45,6 +45,7 @@ if(CMAKE_UFE_V2_FEATURES_AVAILABLE)
 		#
         # testDuplicateCmd.py
         # testMoveCmd.py
+        testObject3d.py
         # testRotateCmd.py
         # testScaleCmd.py
         # testTransform3dTranslate.py