我有这个杂货店，我应该让它看起来好像这个人正在穿过小岛，但为了做到这一点，物体必须通过相机，每次它接近时，它会击中窗户的框架，它几乎看起来像后退，向相反的方向走。但如果我放大一点，那么它会通过但在中途减速。有没有办法让对象自动穿过相机？感谢
from visual import *
sphere(pos=(0,0,0), radius = 0.5)
text(pos=(-2,1,0), text="Center")
rightside = box(pos=(10,0,-40), axis=(1,300,0), height=0.5, width=60, length=12, material=materials.emissive)
leftside = box(pos=(-10,0,-40), axis=(-1,300,0), height=0.5, width=60, length=12, material=materials.emissive)
bottomside = box(pos=(0,-5.8,-40), axis=(1,0,0), height=0.5, width=60, length=20, color=color.cyan, material=materials.emissive)
leftfirstshelf = box(pos=(8,0,-40), axis=(1,0,0), height=0.5, width=60, length=4, color=color.cyan, material=materials.emissive)
leftsecondshelf = box(pos=(-8,0,-40), axis=(1,0,0), height=0.5, width=60, length=4, color=color.white, material=materials.emissive)
leftthirdshelf = box(pos=(-8,-4,-40), axis=(1,0,0), height=0.5, width=60, length=4, color=color.cyan, material=materials.emissive)
rightfirstshelf = box(pos=(8,4,-40), axis=(1,0,0), height=0.5, width=60, length=4, color=color.white, material=materials.emissive)
rightsecondshelf = box(pos=(-8,4,-40), axis=(1,0,0), height=0.5, width=60, length=4, color=color.cyan, material=materials.emissive)
rightthirdshelf = box(pos=(8,-4,-40), axis=(1,0,0), height=0.5, width=60, length=4, color=color.white, material=materials.emissive)
cheeriosbox = box(pos=(8,6,-60), axis=(1,0,0), height=4, width=2.5, length=0.8, color=color.yellow, material=materials.emissive)
cheeriostext = text(pos=(7.7,7,-61), axis=(0,0,25), height=0.5, width=2.5, length=0.8, color=color.black, text='Cheerios')
watermelon = ellipsoid(pos=(8,2,-40), height=3, width=3.5, length=3, color=color.green, material=materials.emissive)
cokecan = cylinder(pos=(-8,-3.5,-60), height=0, width=0, length=3, color=color.red, material=materials.emissive, axis=(0,7,0))
cokecantext = text(pos=(-7.1,-2,-59), height=1, width=2, length=1, axis=(0,0,-25), color=color.black, text="Coke")
leftcarrotbody = cone(pos=(-8,0.5,-30), radius=0.2, color=color.orange, axis=(0,0,3), material=materials.emissive)
leftcarrottop = sphere(pos=(-8,0.5,-30),radius=0.3, color=color.green, material=materials.emissive)
middlecarrotbody = cone(pos=(-7.5,0.5,-30), radius=0.2, color=color.orange, axis=(0,0,3), material=materials.emissive)
middlecarrottop = sphere(pos=(-7.5,0.5,-30),radius=0.3, color=color.green, material=materials.emissive)
rightcarrotbody = cone(pos=(-7,0.5,-30), radius=0.2, color=color.orange, axis=(0,0,3), material=materials.emissive)
rightcarrottop = sphere(pos=(-7,0.5,-30),radius=0.3, color=color.green, material=materials.emissive)
orangefruit = sphere(pos=(-7.5,5.3,-15), radius=1, color=color.orange, material=materials.emissive)
bottomrowcupone = cylinder(pos=(8,-3.75,-15), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
bottomrowcuptwo = cylinder(pos=(8,-3.75,-14), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
bottomrowcupthree = cylinder(pos=(8,-3.75,-13), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
bottomrowcupfour = cylinder(pos=(8,-3.75,-12), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
thirdrowcupone = cylinder(pos=(8,-2.86,-14.5), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
thirdrowcuptwo = cylinder(pos=(8,-2.86,-13.5), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
thirdrowcupthree = cylinder(pos=(8,-2.86,-12.5), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
secondrowcupone = cylinder(pos=(8,-1.97,-14), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
secondrowcuptwo = cylinder(pos=(8,-1.97,-13), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
topcup = cylinder(pos=(8,-1.08,-13.5), radius=0.5, height=2, axis=(0,0.9,0),color=color.blue, material=materials.emissive)
a = vector(10,0,-40)
b = vector(-10,0,-40)
c = vector(0,-5.8,-40)
d = vector(8,0,-40)
e = vector(-8,0,-40)
f = vector(-8,-4,-40)
g = vector(8,4,-40)
h = vector(-8,4,-40)
i = vector(8,-4,-40)
j = vector(8,6,-60)
k = vector(7.7,7,-61.15)
l = vector(8,2,-40)
m = vector(-8,-3.5,-60)
n = vector(-7.1,-2,-59)
o = vector(-8,0.5,-30)
p = vector(-8,0.5,-30)
q = vector(-7.5,0.5,-30)
r = vector(-7.5,0.5,-30)
s = vector(-7,0.5,-30)
t = vector(-7,0.5,-30)
u = vector(-7.5,5.3,-15)
v = vector(8,-3.75,-15)
w = vector(8,-3.75,-14)
x = vector(8,-3.75,-13)
y = vector(8,-3.75,-12)
z = vector(8,-2.86,-14.5)
aia = vector(8,-2.86,-13.5)
bib = vector(8,-2.86,-12.5)
cic = vector(8,-1.97,-14)
did = vector(8,-1.97,-13)
eie = vector(8,-1.08,-13.5)
while a.z < 100:
rate(20)
rightside.pos = a
leftside.pos = b
bottomside.pos = c
leftfirstshelf.pos = d
leftsecondshelf.pos = e
leftthirdshelf.pos = f
rightfirstshelf.pos = g
rightsecondshelf.pos = h
rightthirdshelf.pos = i
cheeriosbox.pos = j
cheeriostext.pos = k
watermelon.pos = l
cokecan.pos = m
cokecantext.pos = n
leftcarrotbody.pos = o
leftcarrottop.pos = p
middlecarrotbody.pos = q
middlecarrottop.pos = r
rightcarrotbody.pos = s
rightcarrottop.pos = t
orangefruit.pos = u
bottomrowcupone.pos = v
bottomrowcuptwo.pos = w
bottomrowcupthree.pos = x
bottomrowcupfour.pos = y
thirdrowcupone.pos = z
thirdrowcuptwo.pos = aia
thirdrowcupthree.pos = bib
secondrowcupone.pos = cic
secondrowcuptwo.pos = did
topcup.pos = eie
a.z = a.z + 1
b.z = b.z + 1
c.z = c.z + 1
d.z = d.z +1
e.z = e.z + 1
f.z = f.z + 1
g.z = g.z + 1
h.z = h.z + 1
i.z = i.z + 1
j.z = j.z + 1
k.z = k.z + 1
l.z = l.z + 1
m.z = m.z + 1
n.z = n.z + 1
o.z = o.z + 1
p.z = p.z + 1
q.z = q.z + 1
r.z = r.z + 1
s.z = s.z + 1
t.z = t.z + 1
u.z = u.z + 1
v.z = v.z + 1
w.z = w.z + 1
x.z = x.z + 1
y.z = y.z + 1
z.z = z.z + 1
aia.z = aia.z + 1
bib.z = bib.z + 1
cic.z = cic.z + 1
did.z = did.z + 1
eie.z = eie.z + 1
答案 0 :(得分：2)
我明白了，VPython中有一个自动缩放的东西叫做自动缩放，为了关闭它，代码是scene.autoscale = False，你所做的就是把它放在while循环之前。并且它会阻止相机缩小以保持帧中的所有对象。