Add osgAtlasSimbicon and osgTinkertoy examples

.gitignore

@@ -24,3 +24,4 @@ TAGS
 /nbproject/
 /doxygen/html/
 docs/readthedocs/site
+data/screencap/*

CHANGELOG.md

@@ -22,6 +22,14 @@
   * Added `sdf` parsing for `fixed` joint and `material` tag of visual shape: [#775](https://github.com/dartsim/dart/pull/775)
   * Added support of urdfdom_headers 1.0: [#766](https://github.com/dartsim/dart/pull/766)
 
+* GUI
+
+  * Added ImGui for 2D graphical interface: [#781](https://github.com/dartsim/dart/pull/781)
+
+* Examples
+
+  * Added osgAtlasSimbicon and osgTinkertoy: [#781](https://github.com/dartsim/dart/pull/781)
+
 * Misc improvements and bug fixes
 
   * Added `virtual Shape::getType()` and deprecated `ShapeType Shape::getShapeType()`: [#724](https://github.com/dartsim/dart/pull/724)

dart/gui/CMakeLists.txt

@@ -19,6 +19,11 @@ target_link_libraries(dart-gui dart-utils ${GLUT_LIBRARY} ${OPENGL_LIBRARIES})
 
 # Generate header for this namespace
 dart_get_filename_components(header_names "gui headers" ${hdrs})
+list(REMOVE_ITEM header_names stb_textedit.h)
+list(REMOVE_ITEM header_names stb_truetype.h)
+list(REMOVE_ITEM header_names stb_rect_pack.h)
+list(REMOVE_ITEM header_names imconfig.h)
+list(REMOVE_ITEM header_names imgui_internal.h)
 if(HAVE_OPENSCENEGRAPH)
   list(APPEND header_names "osg/osg.hpp")
 endif(HAVE_OPENSCENEGRAPH)

dart/gui/imconfig.h

@@ -0,0 +1,51 @@
+//-----------------------------------------------------------------------------
+// USER IMPLEMENTATION
+// This file contains compile-time options for ImGui.
+// Other options (memory allocation overrides, callbacks, etc.) can be set at runtime via the ImGuiIO structure - ImGui::GetIO().
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+//---- Define assertion handler. Defaults to calling assert().
+//#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
+
+//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows.
+//#define IMGUI_API __declspec( dllexport )
+//#define IMGUI_API __declspec( dllimport )
+
+//---- Include imgui_user.h at the end of imgui.h
+//#define IMGUI_INCLUDE_IMGUI_USER_H
+
+//---- Don't implement default handlers for Windows (so as not to link with OpenClipboard() and others Win32 functions)
+//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS
+//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS
+
+//---- Don't implement help and test window functionality (ShowUserGuide()/ShowStyleEditor()/ShowTestWindow() methods will be empty)
+//#define IMGUI_DISABLE_TEST_WINDOWS
+
+//---- Don't define obsolete functions names
+//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+
+//---- Implement STB libraries in a namespace to avoid conflicts
+//#define IMGUI_STB_NAMESPACE     ImGuiStb
+
+//---- Define constructor and implicit cast operators to convert back<>forth from your math types and ImVec2/ImVec4.
+/*
+#define IM_VEC2_CLASS_EXTRA                                                 \
+        ImVec2(const MyVec2& f) { x = f.x; y = f.y; }                       \
+        operator MyVec2() const { return MyVec2(x,y); }
+
+#define IM_VEC4_CLASS_EXTRA                                                 \
+        ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; }     \
+        operator MyVec4() const { return MyVec4(x,y,z,w); }
+*/
+
+//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
+//---- e.g. create variants of the ImGui::Value() helper for your low-level math types, or your own widgets/helpers.
+/*
+namespace ImGui
+{
+    void    Value(const char* prefix, const MyMatrix44& v, const char* float_format = NULL);
+}
+*/
+