Believable cloth is one of the most complicated and chaotic effects to animate .No other effect is as expensive to computer or devil is complicated to animate. with perhaps the exception of fluids.
The problem with animating cloth is directly related to its complex nature. Real cloth is an artificial material comprised of a network of natural or artificial fibers (thread and yam).These threads are woven together by a loom machine to form a cohesive. Patten creating different fabrics (like denim. satin or silk) is done by varying the pattern and changing the material that thread is made of. This process produces the myriad of different fabrics . We see all over the place.
Cloth is basically just a bunch of threads woven together to form a solid surface. When forces are applied to a piece of cloth. Its shape is determined by how these threads pull and stretch each other loosely woven cloth will fall into a shapeless dump. While tightly woven fabric(like canvas)can retain their shape under pressure . when cloth forms into folds an wrinkles. This is because the threads were not strong enough to resist bending. When animating cloth it can help to keep this in mind.
In computer graphics. Cloth is an mated by simulating the complex interaction between threads as the undergo stresses(like collision. friction and gravity) . This is done using what is referred to as a spring-mass solver. A spring-mass solver creates an array of particles across the surface. These particle are usually positioned a teach vertex and are corrected by several different types of springs (shear stretch and bend springs).The particles are then subject to forces and the springs (like the threads in a franc) keep the whole system together.
Cloth simulation is an amazing thing to witness while it can be tricky to setup and tweak. If you follow the guidelines in this chapter you should have no problem getting professional results. Everytime specifically. we will cover.
不要给我在线翻译的那种答案