World Editor is a sandbox that allows easily create simulation scene/map in graphical way. There is also possibility to save and restore from file.
overview:
Edit modes:
- continuous – not recommended because of easiness of creating concave shape which is not supported
- points – select point by point created convex polygon
- quads – perfect for irregular terrain
- rectangle – rectangular shape
- circle
- strip – draw custom line
- joint – joins two selected objects
- grab and move – allows to move objects
- merge – combines two objects
- creating forcefield which pushes object into chosen direction
- destructible terrain (static)
- particle emitters designer
here an example of ragdoll construction:
video from post https://szamq.wordpress.com/2011/05/15/ugly-ragdolls/
Paweł Mogiła's game development blog 