【面】计算点到直线的距离

更新于
已知平面内一点，计算其到目标直线的距离。
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import math

def getDis(pointX, pointY, lineX1, lineY1, lineX2, lineY2):
    a = lineY2 - lineY1
    b = lineX1 - lineX2
    c = lineX2*lineY1 - lineX1*lineY2
    dis = (math.fabs(a*pointX + b*pointY + c))/(math.pow(a*a + b*b, 0.5))
    return dis

print(getDis(1, 0, 0, 0, 0, 5))
print(getDis(1, 0, 0, 0, 1, 0.5))
0%