sherm1 · August 29, 2015 14:05 · Aug 11, 2014 · Aug 11, 2014 · Aug 11, 2014
diff --git a/Output b/Output
@@ -0,0 +1,18 @@
+Here is the output I got from this in Visual Studio 2013.
+Note that all the concrete objects have different addresses,
+showing that a deep copy of the map was done.
+
+----------
+Foo1: Foo1      is a Foo@0x14a350 (class Foo)
+Foo2: Foo2      is a Foo@0x14ada0 (class Foo)
+MyBar: MyBar    is a Bar@0x14ae10 (class Bar)
+YourBar: YourBar        is a Bar@0x14ae80 (class Bar)
+cloning Foo
+cloning Foo
+cloning Bar
+cloning Bar
+Foo1: Foo1      is a Foo@0x14afd0 (class Foo)
+Foo2: Foo2      is a Foo@0x14af60 (class Foo)
+MyBar: MyBar    is a Bar@0x14b040 (class Bar)
+YourBar: YourBar        is a Bar@0x14b0b0 (class Bar)
+----------
diff --git a/cloneptr.cpp b/cloneptr.cpp
@@ -49,11 +49,12 @@ int main() {
     stuff["YourBar"] = new Bar("YourBar");
 
     for (auto& p : stuff)
-        cout << p.first << ": " << p.second->getNameAndAddress() << endl;
+        cout << p.first << ": " << p.second->getNameAndAddress() <<
+        " (" << typeid(*p.second).name() << ")" << endl;
 
     Map copy(stuff); // "copy" should be a deep copy of "stuff" now.
     for (auto& p : copy)
-        cout << p.first << ": " << p.second->getNameAndAddress() << endl;
-
+        cout << p.first << ": " << p.second->getNameAndAddress() <<
+        " (" << typeid(*p.second).name() << ")" << endl;
     return 0;
 }
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -0,0 +1,22 @@
+# Generic CMakeLists.txt for making a Simbody-using executable.
+# This shows how to use the provided SimbodyConfig.cmake to locate a Simbody
+# installation on your machine so you can use it from your own code.
+# You will most likely want to copy some of these lines into your own
+# CMakeLists.txt rather than use this one verbatim.
+cmake_minimum_required(VERSION 2.8)
+project(cloneptr)
+
+# List your source and header files here.
+set(my_source_files cloneptr.cpp)
+set(my_header_files )
+
+# This depends on SimbodyConfig.cmake being located somewhere predictable
+# on your machine. If you have installed it somewhere that CMake won't be
+# able to guess, you'll need to tell find_package where to look.
+find_package(Simbody REQUIRED)
+
+include_directories(${Simbody_INCLUDE_DIR})
+link_directories(${Simbody_LIB_DIR})
+
+add_executable(cloneptr ${my_source_files} ${my_header_files})
+target_link_libraries(cloneptr ${Simbody_LIBRARIES})
diff --git a/cloneptr.cpp b/cloneptr.cpp
@@ -0,0 +1,59 @@
+// Demonstrate use of ClonePtr to allow deep copying of maps containing
+// abstract objects.
+
+#include "Simbody.h"
+
+#include <cstdio>
+#include <iostream>
+#include <string>
+#include <map>
+
+using namespace SimTK;
+using namespace std;
+
+class AbstractBase {
+public:
+    AbstractBase(const string& name) : m_name(name) {}
+    virtual ~AbstractBase() {}
+    virtual AbstractBase* clone() const = 0;
+    virtual std::string getType() const = 0;
+
+    string getNameAndAddress() const {
+        return m_name + "\tis a " + getType() + "@" 
+               + String((size_t)this, "0x%llx");
+    }
+private:
+    string m_name;
+};
+
+class Foo : public AbstractBase {
+public:
+    Foo(const string& name) : AbstractBase(name) {}
+    Foo* clone() const override {printf("cloning Foo\n"); return new Foo(*this);}
+    string getType() const override {return "Foo";}
+};
+
+class Bar : public AbstractBase {
+public:
+    Bar(const string& name) : AbstractBase(name) {}
+    Bar* clone() const override {printf("cloning Bar\n"); return new Bar(*this);}
+    string getType() const override {return "Bar";}
+};
+
+using Map=map<string, ClonePtr<AbstractBase>>;
+int main() {
+    Map stuff;
+    stuff["Foo1"] = new Foo("Foo1");
+    stuff["Foo2"] = new Foo("Foo2");
+    stuff["MyBar"] = new Bar("MyBar");
+    stuff["YourBar"] = new Bar("YourBar");
+
+    for (auto& p : stuff)
+        cout << p.first << ": " << p.second->getNameAndAddress() << endl;
+
+    Map copy(stuff); // "copy" should be a deep copy of "stuff" now.
+    for (auto& p : copy)
+        cout << p.first << ": " << p.second->getNameAndAddress() << endl;
+
+    return 0;
+}
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