opensource/manim
1
0
Fork 0
mirror of https://github.com/3b1b/manim.git synced 2025-08-02 02:35:22 +08:00
Code Issues Packages Projects Releases Wiki Activity

Sure, I *could* separate all these updates into separate reasonable commits, but where's the fun in that?

Browse Source
This commit is contained in:
Grant Sanderson
2017-02-16 13:03:26 -08:00
parent 0c1bb9d41e
commit 3535b39dd1
10 changed files with 1280 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
topics/number_line.py
View File

@ -16,6 +16,7 @@ class NumberLine(VMobject):
"tick_frequency" : 1,
"leftmost_tick" : None, #Defaults to ceil(x_min)
"numbers_with_elongated_ticks" : [0],
"numbers_to_show" : None,
"longer_tick_multiple" : 2,
"number_at_center" : 0,
"propogate_style_to_family" : True
@ -62,11 +63,19 @@ class NumberLine(VMobject):
)
def point_to_number(self, point):
dist_from_left = float(point[0]-self.main_line.get_left()[0])
num_dist_from_left = dist_from_left/self.space_unit_to_num
return self.x_min + num_dist_from_left
left_point, right_point = self.main_line.get_start_and_end()
full_vect = right_point-left_point
def distance_from_left(p):
return np.dot(p-left_point, full_vect)/np.linalg.norm(full_vect)
return interpolate(
self.x_min, self.x_max,
distance_from_left(point)/distance_from_left(right_point)
)
def default_numbers_to_display(self):
if self.numbers_to_show is not None:
return self.numbers_to_show
return np.arange(self.leftmost_tick, self.x_max, 1)
def get_vertical_number_offset(self, direction = DOWN):