Bridge structure sunshine shadow rapid identification method based on ray tracing

The invention discloses a bridge structure sunshine shadow rapid identification method based on ray tracing. The method comprises the following steps: S1, calculating sun position parameters at each moment from sunrise to sunset; s2, reading spatial position data of all surface units of the bridge structure; s3, performing preliminary screening to obtain a surface unit on a sunny side in the bridge structure; s4, storing the preliminarily screened surface units into a to-be-identified sunlight unit array; s5, identifying and screening out surface units shielded by self parts on the sunny side of the bridge structure; s6, performing parallel ray tracing on different block structures to obtain a shadow unit array file; and S7, identifying and obtaining a sunlight shadow area in the bridge structure. According to the method, the sunlight shadow area of the bridge structure can be accurately and efficiently identified, and when the sunlight shadow area of a complex bridge structure is identified, different effect