DATA PROCESSING METHOD AND APPARATUS, DEVICE, COMPUTER-READABLE STORAGE MEDIUM, AND COMPUTER PROGRAM PRODUCT

A data processing method includes acquiring three-dimensional mesh data to be processed, and performing dimension reduction on the three-dimensional mesh data to obtain two-dimensional mesh data, the two-dimensional mesh data including vertex information and triangle information, constructing a hierarchical sub-mesh structure, each level of the hierarchical sub-mesh structure including one or more sub-meshes, performing grouping of triangles on the two-dimensional mesh data to obtain triangle grouping sets corresponding to the sub-meshes, hierarchically storing the sub-meshes and the triangle grouping sets corresponding to the sub-meshes, and determining cross-section loops of the sub-meshes, and rendering, based on the cross-section loops, cross-sections of each of the sub-meshes.