radius=calculateRadius(startPoint,endPoint); } //x,y,半徑,開(kāi)始點(diǎn),結(jié)束點(diǎn),順時(shí)針/逆時(shí)針 cxt.arc(x,y,radius,0,Math.PI*2,false); // 繪制圓 cxt.stroke(); } //計(jì)算圓半徑 var calculateRadius=function(p1,p2){ var width=p2.getX()-p1.getX(); var height=p2.getY()-p1.getY(); //...
www.dbjr.com.cn/article/1625...htm 2025-5-28