【摘要】 画法几何的内容一般可划分为投影作图、度量和定位等问题,每一类问题都可分为若干子问题,子问题又可再细分,直至若干最基本的作图方法。这是画法几何的基础,也是画法几何解题的基本方法。提出了图形求解算子化原理,利用形、数、计算机相结合的方法在VBA环境下实现了用计算机求解空间几何元素间的度量和定位问题,既保留了画法几何空间思维的优点,又克服了手工作图精度不高、效率低的缺点。更多还原

【Abstract】 The contents of descriptive geometry(DG) can often be divided into three problems,i.e.projection drawing,measurement and orientation.Each problem can be further subdivided into small one until forming a number of basic methods for problem solving.These methods are the base of DG.The principal of using operators to solve graphic solutions,which is synthesized with graph,math and computer technology,is presented.Thus the geometric problems of measurement and orientation in the space can be solved by the computers through VBA programming.It is not only to reserve the advantages of space thinking in GD,but also overcome the disadvantages of low accuracy and low efficiency by handicraft.更多还原