Unity CAD (dxf)文件读取

1.可以方便的读取到 CAD导出的dxf文件数据 2.兼容AutoCad2000及以上版本 3.效果：https://blog.csdn.net/qq_26318597/article/details/129853945 4.支持的 DXF entities * 3dFace * Arc * Circle * Dimensions (aligned, linear, radial, diametric, 3 point angular, 2 line angular, arc length, and ordinate) * Ellipse * Hatch (including Gradient patterns) * Image * Insert (block references and attributes, dynamic blocks are not supported) * Leader * Line * LwPolyline (light weight polyline) * Mesh * MLine * MText * Point ......