Garrett Hartshaw <gharts...@gmail.com> wrote:
> The program I am writing gives the following error message when run.
>
> Traceback (most recent call last):
> File "./space.py", line 177, in <module>
> main()
> File "./space.py", line 173, in main
> player = Ship("space/models/fighter.3ds",
> "space/models/realistic.bmp", Quaternion(), Vector(0, 0, -30), 1, 0.1)
> File "./space.py", line 131, in __init__
> Object.__init__(self, obj, tex, rot, pos)
> File "./space.py", line 124, in __init__
> self.model = Model(obj)
> File "./space.py", line 80, in __init__
> self.CalcNormals()
> File "./space.py", line 90, in CalcNormals
> vectB = (vectA - vectB).Normalize()
> AttributeError: Vector instance has no attribute 'Normalize'
>
> The definition for Vector is:
>
> class Vector:
> def __init__(self, x=0, y=0, z=0):
> self.x = x
> self.y = y
> self.z = z
>
> def Normalize(self):
> return self / self.Length()
>
> def __sub__(self, right):
> return Vector(self.x - right.x, self.y - right.y, self.z - right.z)
>
> so I cannot figure out what the error is.
You may print out the given vector's attr list using dir to check, or just
check it actually holds a Normalise method, exactly at the point you want its
norm. Something like:
v = (vectA - vectB)
print (hasattr(v, "Normalise")); print (v.__class__)
vectB = v.Normalise()
The second print() is for this reason: I bet you have several instances (;-) of
the Vector class on your system, and the one actually used is not the one you
guess...
> (o_
> //\
> V_/_
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