起点: ({{ selectedCurve.start.x }}, {{ selectedCurve.start.y }})
控制点 1: ({{ selectedCurve.control1.x }}, {{ selectedCurve.control1.y }})
控制点 2: ({{ selectedCurve.control2.x }}, {{ selectedCurve.control2.y }})
终点: ({{ selectedCurve.end.x }}, {{ selectedCurve.end.y }})