Class 更改实例变量后函数不是最新的
Class function not up to date after changing instance variable
抱歉我的代码太长了。此作业处理 3D 平面上的矩形。 class 根据用户输入的 centerX、centerY、centerZ、宽度、高度和深度在 xyz 轴上创建一个具有 8 个点的框。 class中的另一个函数，setCenter，改变centerX，centerY，和centerZ。在下面的这个例子中 box1.overlaps(box2) 应该 return True.
>box1 = Box(10.0, 5.0, 0.0, 2.0, 1.0, 1.0)
>
>box2 = Box(0, 0, 0, 3.5, 2.5, 1.0)
>
>box1.overlaps(box2)
>Out[4]: False
>
>box1.setCenter(2.75, 0.0, 0.0)
>
>box1.overlaps(box2)
>Out[6]: False
如果我用要更改的中心初始化框，它会 return 正确
>box1 = Box(2.75,0,0,2,1,1)
>
>box1.overlaps(box2)
>Out[10]: True
我该如何解决这个问题？这是因为我在应该使用 class 变量的地方使用了实例变量吗？如果可以，我该怎么做？
编辑：更新到更改点仍然无法使其按预期工作
class Box:
def __init__(self, centerX, centerY, centerZ, width, height, depth):
self.prop = [centerX,centerY,centerZ,width,height,depth]
self.topleft1 = [(centerX - (0.5*width)),
(centerY + (0.5*height)),
(centerZ + (0.5*depth))]
self.topright1 = [(centerX + (0.5*width)),
(centerY + (0.5*height)),
(centerZ + (0.5*depth))]
self.bottomleft1 = [(centerX - (0.5*width)),
(centerY - (0.5*height)),
(centerZ + (0.5*depth))]
self.bottomright1 = [(centerX + (0.5*width)),
(centerY - (0.5*height)),
(centerZ + (0.5*depth))]
self.topleft2 = [(centerX - (0.5*width)),
(centerY + (0.5*height)),
(centerZ - (0.5*depth))]
self.topright2 = [(centerX + (0.5*width)),
(centerY + (0.5*height)),
(centerZ - (0.5*depth))]
self.bottomleft2 = [(centerX - (0.5*width)),
(centerY - (0.5*height)),
(centerZ - (0.5*depth))]
self.bottomright2 = [(centerX + (0.5*width)),
(centerY - (0.5*height)),
(centerZ - (0.5*depth))]
self.coord = [self.topleft1,self.topright1,self.bottomleft1,self.bottomright1,self.topleft2,
self.topright2,self.bottomleft2,self.bottomright2]
def setCenter(self, x1, y1, z1):
self.prop[0] = x1
self.prop[1] = y1
self.prop[2] = z1
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def setWidth(self, width):
self.prop[3] = width
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def setHeight(self, height):
self.prop[4] = height
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def setDepth(self, depth):
self.prop[5] = depth
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def volume(self):
return (self.prop[3]*self.prop[4]*self.prop[5])
def surfaceArea(self):
return (self.prop[3]*self.prop[4])*2+(self.prop[3]*self.prop[5])*2+(self.prop[4]*self.prop[5])*2
def insideOf(self, point):
if all([point[0]>=self.topleft1[0],point[0]<=self.topright1[0],point[1]>=self.bottomleft1[1],point[1]<=self.topleft1[1],point[2]>=self.topleft2[2],point[2]<=self.topleft1[2]]):
return True
else:
return False
def overlaps(self, otherBox):
result = False
for i in otherBox.coord:
if self.insideOf(i) == True:
result = True
for i in self.coord:
if otherBox.insideOf(i) == True:
result = True
return result
def contains(self, otherBox):
if self.insideOf(otherBox.topleft1) and self.insideOf(otherBox.bottomright1) and self.insideOf(otherBox.topleft2) and self.insideOf(otherBox.bottomright2) == True:
return True
else:
return False
def __repr__(self):
if self.prop[3] == int(self.prop[3]):
self.x = int(self.prop[3])
else:
self.x = self.prop[3]
if self.prop[4] == int(self.prop[4]):
self.y = int(self.prop[4])
else:
self.y = self.prop[4]
if self.prop[5] == int(self.prop[5]):
self.z = int(self.prop[5])
else:
self.z = self.prop[5]
self.dimensions = str(self.x)+'-by-'+str(self.y)+'-by-'+str(self.z)
if self.prop[5] == 0:
self.D = ' 2D'
else:
self.D = ' 3D'
self.center = '('+str(self.prop[0])+','+str(self.prop[1])+','+str(self.prop[2])+')'
return '< '+self.dimensions+self.D+' box with center at '+self.center+' >'
问题出在您的 setCenter() 方法上。在其中，您更新了框的中心，但没有更新 topleft1、topright1、bottomleft1 等。
更改您的 setCenter() 方法以同时更新这些属性，它应该可以工作。 （您还必须将此更改添加到其他 setX 方法。您应该将这些计算抽象为它们自己的私有方法，并在每个 setX 方法的末尾调用它。）。
抱歉我的代码太长了。此作业处理 3D 平面上的矩形。 class 根据用户输入的 centerX、centerY、centerZ、宽度、高度和深度在 xyz 轴上创建一个具有 8 个点的框。 class中的另一个函数，setCenter，改变centerX，centerY，和centerZ。在下面的这个例子中 box1.overlaps(box2) 应该 return True.
>box1 = Box(10.0, 5.0, 0.0, 2.0, 1.0, 1.0)
>
>box2 = Box(0, 0, 0, 3.5, 2.5, 1.0)
>
>box1.overlaps(box2)
>Out[4]: False
>
>box1.setCenter(2.75, 0.0, 0.0)
>
>box1.overlaps(box2)
>Out[6]: False
如果我用要更改的中心初始化框，它会 return 正确
>box1 = Box(2.75,0,0,2,1,1)
>
>box1.overlaps(box2)
>Out[10]: True
我该如何解决这个问题？这是因为我在应该使用 class 变量的地方使用了实例变量吗？如果可以，我该怎么做？
编辑：更新到更改点仍然无法使其按预期工作
class Box:
def __init__(self, centerX, centerY, centerZ, width, height, depth):
self.prop = [centerX,centerY,centerZ,width,height,depth]
self.topleft1 = [(centerX - (0.5*width)),
(centerY + (0.5*height)),
(centerZ + (0.5*depth))]
self.topright1 = [(centerX + (0.5*width)),
(centerY + (0.5*height)),
(centerZ + (0.5*depth))]
self.bottomleft1 = [(centerX - (0.5*width)),
(centerY - (0.5*height)),
(centerZ + (0.5*depth))]
self.bottomright1 = [(centerX + (0.5*width)),
(centerY - (0.5*height)),
(centerZ + (0.5*depth))]
self.topleft2 = [(centerX - (0.5*width)),
(centerY + (0.5*height)),
(centerZ - (0.5*depth))]
self.topright2 = [(centerX + (0.5*width)),
(centerY + (0.5*height)),
(centerZ - (0.5*depth))]
self.bottomleft2 = [(centerX - (0.5*width)),
(centerY - (0.5*height)),
(centerZ - (0.5*depth))]
self.bottomright2 = [(centerX + (0.5*width)),
(centerY - (0.5*height)),
(centerZ - (0.5*depth))]
self.coord = [self.topleft1,self.topright1,self.bottomleft1,self.bottomright1,self.topleft2,
self.topright2,self.bottomleft2,self.bottomright2]
def setCenter(self, x1, y1, z1):
self.prop[0] = x1
self.prop[1] = y1
self.prop[2] = z1
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def setWidth(self, width):
self.prop[3] = width
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def setHeight(self, height):
self.prop[4] = height
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def setDepth(self, depth):
self.prop[5] = depth
self.topleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomleft1 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.bottomright1 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] + (0.5*self.prop[5]))]
self.topleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.topright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] + (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomleft2 = [(self.prop[0] - (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
self.bottomright2 = [(self.prop[0] + (0.5*self.prop[3])),
(self.prop[1] - (0.5*self.prop[4])),
(self.prop[2] - (0.5*self.prop[5]))]
def volume(self):
return (self.prop[3]*self.prop[4]*self.prop[5])
def surfaceArea(self):
return (self.prop[3]*self.prop[4])*2+(self.prop[3]*self.prop[5])*2+(self.prop[4]*self.prop[5])*2
def insideOf(self, point):
if all([point[0]>=self.topleft1[0],point[0]<=self.topright1[0],point[1]>=self.bottomleft1[1],point[1]<=self.topleft1[1],point[2]>=self.topleft2[2],point[2]<=self.topleft1[2]]):
return True
else:
return False
def overlaps(self, otherBox):
result = False
for i in otherBox.coord:
if self.insideOf(i) == True:
result = True
for i in self.coord:
if otherBox.insideOf(i) == True:
result = True
return result
def contains(self, otherBox):
if self.insideOf(otherBox.topleft1) and self.insideOf(otherBox.bottomright1) and self.insideOf(otherBox.topleft2) and self.insideOf(otherBox.bottomright2) == True:
return True
else:
return False
def __repr__(self):
if self.prop[3] == int(self.prop[3]):
self.x = int(self.prop[3])
else:
self.x = self.prop[3]
if self.prop[4] == int(self.prop[4]):
self.y = int(self.prop[4])
else:
self.y = self.prop[4]
if self.prop[5] == int(self.prop[5]):
self.z = int(self.prop[5])
else:
self.z = self.prop[5]
self.dimensions = str(self.x)+'-by-'+str(self.y)+'-by-'+str(self.z)
if self.prop[5] == 0:
self.D = ' 2D'
else:
self.D = ' 3D'
self.center = '('+str(self.prop[0])+','+str(self.prop[1])+','+str(self.prop[2])+')'
return '< '+self.dimensions+self.D+' box with center at '+self.center+' >'
问题出在您的 setCenter() 方法上。在其中，您更新了框的中心，但没有更新 topleft1、topright1、bottomleft1 等。
更改您的 setCenter() 方法以同时更新这些属性，它应该可以工作。 （您还必须将此更改添加到其他 setX 方法。您应该将这些计算抽象为它们自己的私有方法，并在每个 setX 方法的末尾调用它。）。