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Preliminary end to eoc4 animations

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This commit is contained in:
Grant Sanderson
2017-02-18 14:02:46 -08:00
parent aa9384c9b6
commit 77013e4142
3 changed files with 344 additions and 26 deletions
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20
topics/three_dimensions.py
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@ -16,8 +16,11 @@ class ThreeDCamera(Camera):
self.unit_sun_vect = self.sun_vect/np.linalg.norm(self.sun_vect)
def display_multiple_vectorized_mobjects(self, vmobjects):
def cmp_vmobs(vm1, vm2):
return cmp(vm1.get_center()[2], vm2.get_center()[2])
def cmp_vmobs(*vmobs):
return cmp(*[
vm.get_edge_center(IN)[2]
for vm in vmobs
])
Camera.display_multiple_vectorized_mobjects(
self,
sorted(vmobjects, cmp = cmp_vmobs)
@ -73,13 +76,12 @@ class Cube(VGroup):
"side_length" : 2,
}
def generate_points(self):
faces = [
Square(side_length = self.side_length).shift(OUT).apply_function(
lambda p : np.dot(p, z_to_vector(vect).T)
)
for vect in IN, OUT, LEFT, RIGHT, UP, DOWN
]
self.add(*faces)
for vect in IN, OUT, LEFT, RIGHT, UP, DOWN:
face = Square(side_length = self.side_length)
face.shift(self.side_length*OUT/2.0)
face.apply_function(lambda p : np.dot(p, z_to_vector(vect).T))
self.add(face)