Added ImGuizmo.

3rdparty/ocornut-imgui/imgui.cpp

@@ -80,7 +80,7 @@
  - read the FAQ below this section!
  - your code creates the UI, if your code doesn't run the UI is gone! == very dynamic UI, no construction/destructions steps, less data retention on your side, no state duplication, less sync, less bugs.
  - call and read ImGui::ShowTestWindow() for demo code demonstrating most features.
- - see examples/ folder for standalone sample applications. Prefer reading examples/opengl_example/ first as it is the simplest.
+ - see examples/ folder for standalone sample applications. Prefer reading examples/opengl2_example/ first as it is the simplest.
    you may be able to grab and copy a ready made imgui_impl_*** file from the examples/.
  - customization: PushStyleColor()/PushStyleVar() or the style editor to tweak the look of the interface (e.g. if you want a more compact UI or a different color scheme).
 

3rdparty/ocornut-imgui/imgui_user.h

@@ -44,3 +44,4 @@ namespace ImGui
 
 #include "widgets/file_list.h"
 #include "widgets/memory_editor.h"
+#include "widgets/gizmo.h"

3rdparty/ocornut-imgui/imgui_user.inl

@@ -74,3 +74,4 @@ namespace ImGui
 
 #include "widgets/file_list.inl"
 #include "widgets/memory_editor.inl"
+#include "widgets/gizmo.inl"

3rdparty/ocornut-imgui/widgets/gizmo.h

@@ -0,0 +1,28 @@
+namespace ImGuizmo
+{
+	// call BeginFrame right after ImGui_XXXX_NewFrame();
+	void BeginFrame();
+
+	// return true if mouse cursor is over any gizmo control (axis, plan or screen component)
+	bool IsOver();
+
+	// return true if mouse IsOver or if the gizmo is in moving state
+	bool IsUsing();
+
+	// enable/disable the gizmo. Stay in the state until next call to Enable.
+	// gizmo is rendered with gray half transparent color when disabled
+	void Enable(bool enable);
+
+	// call it when you want a gizmo
+	// Needs view and projection matrices. 
+	// matrix parameter is the source matrix (where will be gizmo be drawn) and might be transformed by the function. Return deltaMatrix is optional
+	// translation is applied in world space
+	enum MODE
+	{
+		TRANSLATE,
+		ROTATE,
+		SCALE
+	};
+	void Mogwai(const float *view, const float *projection, MODE mode, float *matrix, float *deltaMatrix = 0);
+	
+} // namespace ImGuizmo