%?arc.m?arc?generator
%
%??arc（cx?cy?a1?a2?radius?ccode?forward）
%
%??Arc?generator:?da?is?the?angle?increment?for?line?segments?（does?not?affect
%???????DXF?file?output）?ccode?is?the?plot?code?for?the?MATLAB?plot.
%???????forward?is?+1?or?-1?and?defines?the?direction?in?which?the?
%???????arc?is?plotted?（again?does?not?affect?the?DXF?output）.
%
function?arc（cx?cy?a1?a2?radius?ccode?forward）
global?fid?fidd?linecolour?linetype?ofsx?ofsy?dalpha?drad

d2r?=?pi/180;

dang?=?dalpha;?????????????????????????????%?angle?error?allowed
incang?=?2/d2r*acos（（radius-drad）/radius）;?%?calculate?max?arc?angle
if（?incang???dang?=?incang;???????????????????????????%?select?tighter?limit
end

nseg?=?ceil（abs（a2-a1）/dang）;
da=（a2-a1）/nseg;
alpha=a1;

n=nseg+1;

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件??????188246??2000-08-11?10:17??al_u04_c.htm
?????文件???????43670??2000-08-11?10:23??al_u04_d.htm
?????文件????????1460??2007-08-06?12:22??arc.m
?????文件????????1462??2000-09-02?18:05??arc.m.bak
?????文件????????1132??2000-09-03?08:41??circle.m
?????文件?????????168??2000-08-23?08:02??dist.m
?????文件????????5988??2000-09-03?07:32??dxf.m
?????文件????????1185??2007-08-06?12:22??DXF_arc.m
?????文件????????1190??2000-08-26?07:42??DXF_arc.m.bak
?????文件?????????970??2007-08-06?12:22??DXF_circle.m
?????文件?????????973??2000-08-22?08:41??DXF_circle.m.bak
?????文件????????1511??2007-08-06?12:52??DXF_ellipse.m
?????文件????????1502??2000-08-22?08:42??DXF_ellipse.m.bak
?????文件?????????557??2000-08-17?18:12??DXF_end.m
?????文件????????1218??2007-08-06?12:22??DXF_line.m
?????文件????????1222??2000-08-22?08:42??DXF_line.m.bak
?????文件?????????328??2000-08-17?18:30??DXF_lint.m
?????文件?????????310??2000-08-22?08:57??DXF_pinc.m
?????文件?????????983??2007-08-06?12:22??DXF_poly.m
?????文件?????????983??2000-08-22?08:42??DXF_poly.m.bak
?????文件????????1336??2000-09-05?07:40??DXF_scan.m
?????文件????????3470??2007-08-06?12:22??DXF_spline.m
?????文件????????3473??2000-08-26?07:43??DXF_spline.m.bak
?????文件????????2010??2007-08-06?12:25??DXF_start.m
?????文件????????2041??2007-08-06?15:39??DXF_start.m.bak
?????文件????????1667??2007-08-06?12:22??DXF_text.m
?????文件????????1673??2000-09-06?08:04??DXF_text.m.bak
?????文件????????7364??2000-08-11?10:21??dxf_toc.htm
?????文件???????13608??2000-09-05?07:48??DXFhead.dxf
?????文件?????????610??2000-09-04?18:51??DXFtail.dxf
?????文件?????????597??2000-08-24?16:47??endslope.m
............此處省略17個(gè)文件信息