guldin rule

The two-dimensional acoustic ray tracing method by forward deploying triangle,which is based on the geometric acoustics,divides the space by triangles and then confirms the acoustic ray tracing by Snell rule.

二维声线追踪的三角形前向展开法,以几何声学为理论基础,对空间进行三角形划分,由斯涅尔法则确定声线路径。