Instead of applying forces based on springs, stiff connections are introduced to account for attributes of inextensible cloth. The constrained structure is relaxed in an iterative manner to converge to an optimal solution. Bend and shear connections can optionally be weighted to allow for different material behaviours. Virtual particles are placed on the centre of each edge and face for detailed self collision. Non planar rest shapes allow for hand crafted folds and wrinkles which retain throughout the simulation. Alternatively, parameters can be set to learn or forget rest shapes depending on elapsed time and/or bend angle thresholds. This does not only result in more realistic behaviour, but also tends to stabilise the simulation.