Real-time Rendering of Massive Aircraft Model for Assembly

In order to solve real-time rendering of massive aircraft CAD models,automatic batch LOD generation and real-time adaptive rendering methods are presented.By the methods,CAD parts are treated as handling targets to keep assembly tree,together with split algorithm to simplify massive model.Then model storage,rendering ability of computer and characteristics of CAD parts are taken into consideration for quantitative LOD generation.LOD levels are adjusted according to rendering load and mesh density based on accurate occlusion query,so the accuracies and errors among different parts are consistent,which also avoid drawbacks of traditional methods.Finally the methods are optimized for speed.The experimental results show that massive CAD model with tens of millions triangles can be finished LOD generation within one hour and rendered in real-time on personal computers.