Asymptote/命令/plain/Relative

side Relative(explicit pair align);

side Leftside= Relative(W);
side Center=Relative((0,0))
side RightSide=Relative(E);

position Relative(real position);

位置 Relative(real) 指定相對於路徑總弧長的位置。這些方便的縮寫是預定義的

position BeginPoint=Relative(0);
position MidPoint=Relative(0.5);
position EndPoint=Relative(1);