%?test_led_wheel
%?for?your?reference

ri????=?0.1;

div_p?=?128;
%?div_p?=?256;

div_r?=?24;
%?div_r?=?36;

bit???=?4;

%?read?RGB?from?img
img_w?=?size（img?2）;
img_h?=?size（img?1）;
img_cx?=?round（img_w?/?2?-?1）;
img_cy?=?round（img_h?/?2?-?1）;
img_r??=?min（img_cx?img_cy）;


figure;
??hold?on;
??axis?equal;
??whitebg（‘k‘）;
??xlim（[-1.1?1.1]）;
??ylim（[-1.1?1.1]）;

for?i=1:div_p
%?????plot（[ri*cos（2*pi*i/div_p）?cos（2*pi*i/div_p）]?...
%??????????[ri*sin（2*pi*i/div_p）?sin（2*pi*i/div_p）]）;
????for?j=1:div_r
????????pr?=?（（1-ri）/（div_r-1）*（j-1）+ri）;
????????px1?=?cos（2*pi*（i-1）/div_p）;
????????px2?=?cos（2*pi*（i）/div_p）;
????????py1?=?sin（2*pi*（i-1）/div_p）;
????????py2?=?sin（2*pi*（i）/div_p）;
%?????????pc??=?[i/div_pj/div_r（2-i/div_p-j/div_r）/2];
????????ix?=?min（round（img_cx?+?img_r*px1*pr）+1?img_w）;
????????iy?=?min（round（img_cy?+?img_r*py1*pr）+1?img_h）;
????????icr?=?img（iy?ix?1）;
????????icg?=?img（iy?ix?2）;
????????icb?=?img（iy?ix?3）;
????????pc?=?single（[icr?icg?icb]/2^（8-bit））?*?2^（8-bit）?/?256;

????????plot（?pr?*?px1?-pr?*?py1??‘.‘?...
??????????????‘MarkerEdgeColor‘?pc?）;
????end;
end;

%?byte?=?div_r?*?div_p?*?bit?/?8
%?dw???=?0.7;?%?m
%?v????=?40;??%?km/h
%?n????=?v/3.6/dw/pi?%?rps
%?dt???=?1/n/div_p?*?1000?%?ms

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1312??2014-03-15?22:22??qumo.m

-----------?---------??----------?-----??----

?????????????????1312????????????????????1