var view = Raphael(10, 50, 800, 600);
var testLine = view.path("M343,56 L343,560 Z"); // A simple straight line.
testLine.attr({stroke:"gold"});
testLine.attr({"stroke-width":25.0});
testLine.attr({"stroke-linecap":"round"}); // No linecap!
为什么 linecap 不设置为圆形?