From 318c4b6ce9f75055e85288b3e1bef39277ffb4f6 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Thu, 15 May 2014 12:37:39 +0200
Subject: [PATCH] + fixes #0001547: add Part Spiral to the selectable list of
 profiles for a Part Loft

---
 src/Mod/Part/App/PartFeatures.cpp | 27 +++++++++++++++++++++++++--
 src/Mod/Part/Gui/TaskLoft.cpp     | 17 ++++++++++++++++-
 src/Mod/Part/Gui/TaskSweep.cpp    | 17 ++++++++++++++++-
 3 files changed, 57 insertions(+), 4 deletions(-)

diff --git a/src/Mod/Part/App/PartFeatures.cpp b/src/Mod/Part/App/PartFeatures.cpp
index bf923485edff..5c9a081c5e9c 100644
--- a/src/Mod/Part/App/PartFeatures.cpp
+++ b/src/Mod/Part/App/PartFeatures.cpp
@@ -35,6 +35,7 @@
 # include <BRepOffsetAPI_MakePipeShell.hxx>
 # include <ShapeAnalysis.hxx>
 # include <TopTools_ListIteratorOfListOfShape.hxx>
+# include <TopoDS_Iterator.hxx>
 # include <TopExp_Explorer.hxx>
 # include <TopoDS.hxx>
 # include <Precision.hxx>
@@ -240,9 +241,20 @@ App::DocumentObjectExecReturn *Loft::execute(void)
         for (it = shapes.begin(); it != shapes.end(); ++it) {
             if (!(*it)->isDerivedFrom(Part::Feature::getClassTypeId()))
                 return new App::DocumentObjectExecReturn("Linked object is not a shape.");
-            const TopoDS_Shape& shape = static_cast<Part::Feature*>(*it)->Shape.getValue();
+            TopoDS_Shape shape = static_cast<Part::Feature*>(*it)->Shape.getValue();
             if (shape.IsNull())
                 return new App::DocumentObjectExecReturn("Linked shape is invalid.");
+
+            // Extract first element of a compound
+            if (shape.ShapeType() == TopAbs_COMPOUND) {
+                TopoDS_Iterator it(shape);
+                for (; it.More(); it.Next()) {
+                    if (!it.Value().IsNull()) {
+                        shape = it.Value();
+                        break;
+                    }
+                }
+            }
             if (shape.ShapeType() == TopAbs_FACE) {
                 TopoDS_Wire faceouterWire = ShapeAnalysis::OuterWire(TopoDS::Face(shape));
                 profiles.Append(faceouterWire);
@@ -355,9 +367,20 @@ App::DocumentObjectExecReturn *Sweep::execute(void)
         for (it = shapes.begin(); it != shapes.end(); ++it) {
             if (!(*it)->isDerivedFrom(Part::Feature::getClassTypeId()))
                 return new App::DocumentObjectExecReturn("Linked object is not a shape.");
-            const TopoDS_Shape& shape = static_cast<Part::Feature*>(*it)->Shape.getValue();
+            TopoDS_Shape shape = static_cast<Part::Feature*>(*it)->Shape.getValue();
             if (shape.IsNull())
                 return new App::DocumentObjectExecReturn("Linked shape is invalid.");
+
+            // Extract first element of a compound
+            if (shape.ShapeType() == TopAbs_COMPOUND) {
+                TopoDS_Iterator it(shape);
+                for (; it.More(); it.Next()) {
+                    if (!it.Value().IsNull()) {
+                        shape = it.Value();
+                        break;
+                    }
+                }
+            }
             // There is a weird behaviour of BRepOffsetAPI_MakePipeShell when trying to add the wire as is.
             // If we re-create the wire then everything works fine.
             // http://forum.freecadweb.org/viewtopic.php?f=10&t=2673&sid=fbcd2ff4589f0b2f79ed899b0b990648#p20268
diff --git a/src/Mod/Part/Gui/TaskLoft.cpp b/src/Mod/Part/Gui/TaskLoft.cpp
index 0c361a4346d4..ed6c7c323f06 100644
--- a/src/Mod/Part/Gui/TaskLoft.cpp
+++ b/src/Mod/Part/Gui/TaskLoft.cpp
@@ -26,6 +26,7 @@
 #ifndef _PreComp_
 # include <QMessageBox>
 # include <QTextStream>
+# include <TopoDS_Iterator.hxx>
 #endif
 
 #include "ui_TaskLoft.h"
@@ -95,9 +96,23 @@ void LoftWidget::findShapes()
     std::vector<Part::Feature*> objs = activeDoc->getObjectsOfType<Part::Feature>();
 
     for (std::vector<Part::Feature*>::iterator it = objs.begin(); it!=objs.end(); ++it) {
-        const TopoDS_Shape& shape = (*it)->Shape.getValue();
+        TopoDS_Shape shape = (*it)->Shape.getValue();
         if (shape.IsNull()) continue;
 
+        // also allow compounds with a single face, wire, edge or vertex
+        if (shape.ShapeType() == TopAbs_COMPOUND) {
+            TopoDS_Iterator it(shape);
+            int numChilds=0;
+            TopoDS_Shape child;
+            for (; it.More(); it.Next(), numChilds++) {
+                if (!it.Value().IsNull())
+                    child = it.Value();
+            }
+
+            if (numChilds == 1)
+                shape = child;
+        }
+
         if (shape.ShapeType() == TopAbs_FACE ||
             shape.ShapeType() == TopAbs_WIRE ||
             shape.ShapeType() == TopAbs_EDGE ||
diff --git a/src/Mod/Part/Gui/TaskSweep.cpp b/src/Mod/Part/Gui/TaskSweep.cpp
index 487bdead507f..4b9cae0746f9 100644
--- a/src/Mod/Part/Gui/TaskSweep.cpp
+++ b/src/Mod/Part/Gui/TaskSweep.cpp
@@ -29,6 +29,7 @@
 # include <QTextStream>
 # include <BRepBuilderAPI_MakeWire.hxx>
 # include <TopoDS.hxx>
+# include <TopoDS_Iterator.hxx>
 #endif
 
 #include "ui_TaskSweep.h"
@@ -118,9 +119,23 @@ void SweepWidget::findShapes()
     std::vector<Part::Feature*> objs = activeDoc->getObjectsOfType<Part::Feature>();
 
     for (std::vector<Part::Feature*>::iterator it = objs.begin(); it!=objs.end(); ++it) {
-        const TopoDS_Shape& shape = (*it)->Shape.getValue();
+        TopoDS_Shape shape = (*it)->Shape.getValue();
         if (shape.IsNull()) continue;
 
+        // also allow compounds with a single face, wire, edge or vertex
+        if (shape.ShapeType() == TopAbs_COMPOUND) {
+            TopoDS_Iterator it(shape);
+            int numChilds=0;
+            TopoDS_Shape child;
+            for (; it.More(); it.Next(), numChilds++) {
+                if (!it.Value().IsNull())
+                    child = it.Value();
+            }
+
+            if (numChilds == 1)
+                shape = child;
+        }
+
         if (shape.ShapeType() == TopAbs_FACE ||
             shape.ShapeType() == TopAbs_WIRE ||
             shape.ShapeType() == TopAbs_EDGE ||