三维实体建立二维投影
Functions of building 2D projections according to 3D solids
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摘要: 通过实例介绍一种在Auto CAD中三维实体建立相关的二维投影的方法,有效地帮助从物体到平面,从平面到物体的空间想象;并能解决复杂形体生成平面图形时,复杂线条的绘制.Abstract: In AutoCAD,when 2D projections are built according to 3D solid,there comes out cutting intersect lines and intersected lines of complicated objects.This paper discusses how to build 2D projections according to 3D solids and draw cutting intersect lines and intersected lines of complicated objects.