本文实例讲述了Python判断直线和矩形是否相交的方法。分享给大家供大家参考。具体实现方法如下:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
"""
A(ax,ay),B(px,py)为两个点 (x1,y1),(x2,y2)为矩形的左上角和右下角坐标 ,判断A,B两点是否和矩形相交
"""
def Judge(ax, ay, px, py, x1, y1, x2, y2):
#转换为真除法
ax, ay, px, py = float (ax), float (ay), float (px), float (py)
x1, y1, x2, y2 = float (x1), float (y1), float (x2), float (y2)
#判断矩形上边线和两点直线相交的点
sx = (y1 - ay) * (px - ax) / (py - ay) + ax
if sx > = x1 and sx < = x2:
return True
#判断矩形下边线和两点直线相交的点
xx = (y1 - ay) * (px - ax) / (py - ay) + ax
if sx > = x1 and sx < = x2:
return True
#判断矩形左边线和两点直线相交的点
zy = (y2 - ay) * (x2 - ax) / (px - ax) + ay
if zy > = y1 and zy < = y2:
return True
#判断矩形右边线和两点直线相交的点
yy = (y2 - ay) * (x2 - ax) / (px - ax) + ay
if yy < = y1 and yy > = y2:
return True
return False
ax = raw_input ()
ay = input ()
px = input ()
py = input ()
x1 = input ()
y1 = input ()
x2 = input ()
y2 = input ()
print Judge(ax, ay, px, py, x1, y1, x2, y2)
|
希望本文所述对大家的Python程序设计有所帮助。