c# - 如何找到哪个矩形最接近一个点

Question

如果我在 Canvas 上有两个 System.Drawing.Rectangle 对象和一个 Point，什么是最佳方法来计算哪个 Rectangle(Rectangle 的任何部分，而不仅仅是它的 Location Point)最接近那个 Point?

来自单元测试的示例:

Rectangle one = new Rectangle (0, 0, 10, 10);

Rectangle two = new Rectangle (20, 20, 10, 10);

Point point = new Point(14, 14);

Rectangle actual = ClosestToPoint(point, one, two);

// should be closer to one since one's bottom right is at (10, 10)
Assert.That(actual, Is.SameAs(one));

// method to write
public Rectangle ClosestToPoint(Point p, params Rectangle[] rectangles) { } 

Answer 1

distance to rectangle = min (distance to each of the 4 line segments that are the edges of the rectangle)

到线段的距离，见this question