几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量

几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 (http://www.dimcax.com/hust/index.php)
-   DirectDWG (http://www.dimcax.com/hust/forumdisplay.php?f=89)
-   -   【转帖】hatching loop (http://www.dimcax.com/hust/showthread.php?t=16502)

yang686526 2009-05-05 12:01 PM

【转帖】hatching loop
 
hatching loop
hatching loop
hello
how may i read hatching loop which is a circle? when i use looptypeat() function, it return oddbhatch::kpolyline, so i use getloopat(index,vertices,bulges), but in vertices there are only 2 points...
thanks
marcin
attached files

polyline, containing two vertices with bulges, may look like circle.
if polyline vertex has bulge, it means that segment (vertex, next vertex) is circular arc with included angle 4*atan(bulge).
sincerely yours,
george udov


所有的时间均为北京时间。 现在的时间是 02:04 AM.