Add example to keep the Qt GUI example

Author: hugtalbot

examples/basic-useQtGUI.py

@@ -0,0 +1,59 @@
+# Choose in your script to activate or not the GUI
+USE_GUI = True
+
+def main():
+    # Required import for python
+    import Sofa
+    import SofaRuntime
+
+    # Make sure to load all SOFA libraries
+
+    #Create the root node
+    root = Sofa.Core.Node("root")
+    # Call the below 'createScene' function to create the scene graph
+    createScene(root)
+    Sofa.Simulation.initRoot(root)
+
+    if not USE_GUI:
+        for iteration in range(10):
+            Sofa.Simulation.animate(root, root.dt.value)
+    else:
+        import Sofa.Gui
+        import SofaQt
+
+        # Find out the supported GUIs
+        print ("Supported GUIs are: " + Sofa.Gui.GUIManager.ListSupportedGUI(","))
+        # Launch the GUI (qt or qglviewer)
+        Sofa.Gui.GUIManager.Init("myscene", "qglviewer")
+        Sofa.Gui.GUIManager.createGUI(root, __file__)
+        Sofa.Gui.GUIManager.SetDimension(1080, 1080)
+        # Initialization of the scene will be done here
+        Sofa.Gui.GUIManager.MainLoop(root)
+        Sofa.Gui.GUIManager.closeGUI()
+        print("GUI was closed")
+
+    print("Simulation is done.")
+
+
+# Function called when the scene graph is being created
+def createScene(root):
+
+    root.addObject('RequiredPlugin', name='Sofa.Component.StateContainer')
+
+    # Scene must now include a AnimationLoop
+    root.addObject('DefaultAnimationLoop')
+
+    # Add new nodes and objects in the scene
+    node1 = root.addChild("Node1")
+    node2 = root.addChild("Node2")
+
+    node1.addObject("MechanicalObject", template="Rigid3d", position="0 0 0   0 0 0 1", showObject="1")
+
+    node2.addObject("MechanicalObject", template="Rigid3d", position="1 1 1   0 0 0 1", showObject="1")
+
+    return root
+
+
+# Function used only if this script is called from a python environment
+if __name__ == '__main__':
+    main()