Flutter, quadraticBezierTo 哪个是 x 和 y？
Flutter, quadraticBezierTo which is x and y?
在上面的场景中，x1 and y1 and x2 and y2 是什么点？？？
为
Path path = Path();
path.quadraticBezierTo(x1, y1, x2, y2)
https://api.flutter.dev/flutter/dart-ui/Path/quadraticBezierTo.html 说：
Adds a quadratic bezier segment that curves from the current point to the given point (x2,y2), using the control point (x1,y1).
即(x1,y1)是你图片中的“手柄点”，(x2,y2)是终点。
在上面的场景中，x1 and y1 and x2 and y2 是什么点？？？
为
Path path = Path();
path.quadraticBezierTo(x1, y1, x2, y2)
https://api.flutter.dev/flutter/dart-ui/Path/quadraticBezierTo.html 说：
Adds a quadratic bezier segment that curves from the current point to the given point (x2,y2), using the control point (x1,y1).
即(x1,y1)是你图片中的“手柄点”，(x2,y2)是终点。