Application of 3D CAD in landscape architecture design and optimization of hierarchical details

Abstract

The landscape garden landscape has multiple functions such as ecology, culture, society and aesthetics. The scientific and reasonable garden landscape organization is an important part of urban construction. Traditional three-dimensional garden landscape construction and virtual display have problems such as inflexible landscape space organization, the limitation of the application of virtual garden simulation to reality, and the heavy workload of garden vegetation and building model construction. This paper comprehensive utilization of three-dimensional CAD (3D CAD), virtual reality and geographic information system technology, integrated parametric modeling plant, immersion technologies such as virtual reality, virtual landscape study parameter-driven integrated build, organize and display the overall process, build a garden The three-dimensional digital terrain model and the real-time fluctuation of the garden water body model realize the Fresnel dynamic optical reflection effect of the water body based on the light direction. Through the techniques of scene cropping and hierarchical detail model, the drawing efficiency and real-time rendering of the garden landscape have been improved.