Fxgear Inc.

Other

Kwang-Jin Choi

Hyeong-Seok Ko

A cloth simulation system is provided which comprises a position calculation module calculating relative positions of adjacent vertices among a plurality of vertices on the cloth in the next time step, using the positions of the vertices in the previous time steps; an analysis module establishing an equation of motion of the respective vertices using the relative positions; and an updating module updating the positions of the respective vertices using the equation of motion, whereby the texture and reality of cloth is increased furthermore, a motion of the cloth is calculated in real-time, so that there is no inconvenience to fabricate clothes animation in advance depending upon the number of the motions of to-be-expressed object, thereby considerably reducing the fabricating costs and period.

System and method for real-time cloth simulation

Deformations occurring in cloth can be decomposed into two components: the in-plane and the out-of-plane deformations. Stretch and shear are in-plane deformation, and bending is out-of-plane deformation. In the method, the numerical simulation can be done in real-time, and the models fix some flaws that existed in previous real-time models, leading to conspicuous reduction of artifacts. The (|x|&#x2212;C)in the energy function is replaced with |x&#x2212;x*|for some constant vector x*, such that the force Jacobian becomes a constant, which obviates solving the large system of linear equations at every time step. The method uses simplified physical models for both edge-based and triangle-based systems.

Method of cloth simulation using linear stretch/shear model

A method of simulating the movement of cloth and a computer-readable medium storing a program which executes the method of simulating the movement of cloth, wherein cloth deformation by compressive force is simulated by an immediate buckling model when the compressive force is applied to two extremities of a deformation unit which models the cloth, cloth deformation by stretching is simulated by a spring model, and hysteresis phenomenon of cloth is simulated by using spring-slips for modeling. The immediate buckling model is based on a model of the present invention in which a deformation unit is not contracted by compressive force and generates an immediate bending deformation. As for the compressive force and stretching, simulation is implemented by separate models, hysteresis phenomenon of cloth is simulated by use of spring-clips for modeling, whereby cloth characteristics can be well reflected and the buckling instability of cloth caused by compressive force can be solved, thereby increasing the simulation speed.

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Seoul, South Korea

Kwang-Jin Choi