function?cont?=?findtri（?tripointpointxpointy?）
%FINDTRI?Summary?of?this?function?goes?here
%???Detailed?explanation?goes?here
num=size（tri1）;
for?i=1:1:num
????temp1=abs（（point（tri（i1）1）*point（tri（i2）2）+point（tri（i1）2）*point（tri（i3）1）+point（tri（i2）1）*point（tri（i3）2）-point（tri（i1）1）*point（tri（i3）2）-point（tri（i1）2）*point（tri（i2）1）-point（tri（i2）2）*point（tri（i3）1））/2）;
????temp2=abs（（pointx*point（tri（i2）2）+pointy*point（tri（i3）1）+point（tri（i2）1）*point（tri（i3）2）-pointx*point（tri（i3）2）-pointy*point（tri（i2）1）-point（tri（i2）2）*point（tri（i3）1））/2）;
????temp3=abs（（point（tri（i1）1）*pointy+point（tri（i1）2）*point（tri（i3）1）+pointx*point（tri（i3）2）-point（tri（i1）1）*point（tri（i3）2）-point（tri（i1）2）*pointx-pointy*point（tri（i3）1））/2）;
????temp4=abs（（point（tri（i1）1）*point（tri（i2）2）+point（tri（i1）2）*pointx+point（tri（i2）1）*pointy-point（tri（i1）1）*pointy-point（tri（i1）2）*point（tri（i2）1）-point（tri（i2）2）*pointx）/2）;
????if?temp1/（temp2+temp3+temp4）>0.95&&temp1/（temp2+temp3+temp4）<1.05
????????cont=i;
????end
end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1091??2012-02-05?11:37??findtri.m
?????文件????????3256??2012-02-05?11:29??flip.m
?????文件????????3519??2012-04-19?16:44??main.m
?????文件??????????59??2012-02-03?18:17??points.txt