Study on l-system-based concrete crack form simulation

A way was proposed to simulate surface crack forms of concrete construction like walls, bridges and pavements by two-dimension stochastic L-System. The form features of concrete crack were analyzed, and several basic primitives of the cracks were summarized and drawn, based on which the primitives were combined and iterated by L-System and quadratic geometric primitive approach was brought forwards. With the adding of random quantities and determination of some control rules of the L-System algorithm according to the features of virtual object, the line framework of crack was finally achieved. Based on OpenCasCade, the three-dimensional entity of crack was formed in the living example. Boolean calculation to the virtual wall was conducted to simulate the crack effect on real concrete construction, which can feel more reality.