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线框模型是三维计算机图形学中重要的物体可视化表示模型,在矿山勘查软件中得到广泛的应用。该模型主要用于描述、管理复杂三维地质体。本文提出一种基于线框模型表达的地质体的折面剖切方法。本算法首先建立剖切模型;其次,计算折面剖切面与地质体之间的交线并求得其切割剖面;第三,分割原始线框模型地质体;第四,对分割后的线框模型进行模型重构。本文采用碰撞检测方法,减少了求交计算次数。最后,作者使用本方法程序对不同地质体进行单面、折面和十字切割。
Wireframe model is an important object visualization model in 3D computer graphics, which has been widely used in mine exploration software. The model is mainly used to describe and manage complex three-dimensional geological body. In this paper, we present a method of fracture segmentation of geologic bodies based on the wireframe model. The algorithm firstly establishes the section model; secondly, calculates the intersection between the section plane and the geologic body and obtains the cutting section; thirdly, divides the original line frame model geology body; fourthly, Model for model reconstruction. In this paper, collision detection method is used to reduce the number of intersection calculations. Finally, the authors use this procedure to perform single-sided, faceted, and cross-cut cutting of different geologic bodies.