Front-end Web multi-source heterogeneous three-dimensional model and three-dimensional terrain fusion method

The invention discloses a front-end Web multi-source heterogeneous three-dimensional model and three-dimensional terrain fusion method. The method comprises the steps that S1, a front-end Web loads a three-dimensional terrain and a 3D Tiles three-dimensional model; s2, calculating information of a Tiles tile bounding box; s3, center point information of Tiles tiles is obtained, and the height of the Tiles tiles and the corresponding height of the three-dimensional terrain are calculated; s5, the optimal offset height # imgabs0 # is calculated according to the Tiles tile height and the three-dimensional terrain height; and S6, the height of the 3D Tiles three-dimensional model is adjusted through the offset height # imgabs 1 #, and fusion matching of the 3D Tiles three-dimensional model and the three-dimensional terrain is achieved. According to the method, the 3D Tiles three-dimensional data and the three-dimensional terrain are fused and matched according to the requirements of the data display effect, the d