In fib, the flexible surface is modeled as a 2-D isostatic frame, represented by nodes and springs between nodes. Nodes can be moved and fixed to any position. The model reacts to interaction by adapting to loads applied by the user, in order to maintain its integrity. The physics solver is based on an implementation of the Verlet Integration Method.
fib uses the peasycam library for nice camera manipulation.
fib is released under the terms of the GNU General Public License.