function?P?=?flockAlignPnY（PYLB）;?

%?Using?simple?cooridinate?translation?and?rotation?we‘ll?align?P?to?Y
%?A?=?angle?beteen?new?X?and?old?X
%?x0y0?=?offset?of?new?origin?
%?x?y?=?point?to?be?translated
%?L?=?leader?x?y.?
%?B?=?flock?barycenter?x?y.?
%?B?L?togther?define?Y?positive?from?B?to?L

if?（Y.A）
????A?=?atan（-1/Y.A）?+?pi*（L（2）?Y?Baricenter?=>?Aelse
????A?=?pi/2*sign（L（2）-B（2））;
end
x0?=?L（1）;
y0?=?L（2）;
x?=?P（:2）;
y?=?P（:3）;

P（:2）?=?x*cos（A）?-?y*sin（A）?+?x0;
P（:3）?=?x*sin（A）?+?y*cos（A）?+?y0;?
return

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????579??2005-11-25?16:11??flockingWithoutComm\flockAlignPnY.m
?????文件?????????789??2005-11-16?05:56??flockingWithoutComm\flockBaryCenter.m
?????文件?????????831??2005-11-07?08:21??flockingWithoutComm\flockFindRelLocS.m
?????文件?????????212??2005-11-06?05:30??flockingWithoutComm\flockNumOfBots.m
?????文件?????????377??2005-11-06?06:16??flockingWithoutComm\flockRank.m
?????文件?????????440??2005-11-26?03:56??flockingWithoutComm\flockSetY.m
?????文件?????????362??2005-10-13?02:35??flockingWithoutComm\flockSort.m
?????文件????????3369??2005-11-07?08:38??flockingWithoutComm\flockStep.m
?????文件????????1154??2005-11-14?03:35??flockingWithoutComm\flockTest.m
?????文件?????????307??2005-11-07?06:41??flockingWithoutComm\flockTest.mat
?????文件???????50892??2006-08-28?16:38??flockingWithoutComm\flockTestPlot.TIF
?????文件????????3485??2005-10-10?04:10??flockingWithoutComm\polygeom.m
?????文件?????????154??2006-08-28?16:41??flockingWithoutComm\ref.txt
?????文件????????1312??2014-02-12?12:22??license.txt