Pre RTree 步骤：将一组点划分为每个包含一个点的矩形区域

构建 Pre RTree：将点集划分为矩形区域

python
class Point:
    def __init__(self, x, y):
        self.x = x
        self.y = y
points = [Point(2, 3), Point(5, 8), Point(9, 4), Point(6, 1)]
rectangles = []

python
class Rectangle:
    def __init__(self, point):
        self.x_min = point.x
        self.y_min = point.y
        self.x_max = point.x
        self.y_max = point.y
for point in points:
    rectangles.append(Rectangle(point))

python
for i, rect in enumerate(rectangles):
    print(f"Rectangle {i+1}: x_min={rect.x_min}, y_min={rect.y_min}, x_max={rect.x_max}, y_max={rect.y_max}")