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incremental progress

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This commit is contained in:
Ben Hambrecht 2018-02-07 18:09:36 +01:00
parent 2c4fa36073
commit 082d67ec84
1 changed files with 35 additions and 34 deletions
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69
active_projects/basel.py
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@ -1211,7 +1211,7 @@ class BackToEulerSumScene(PiCreatureScene):
def construct(self):
#self.remove(self.get_primary_pi_creature())
self.remove(self.get_primary_pi_creature())
NUM_CONES = 7
NUM_VISIBLE_CONES = 6
@ -1232,7 +1232,7 @@ class BackToEulerSumScene(PiCreatureScene):
)
self.number_line.label_direction = DOWN
self.number_line.shift(3*UP)
#self.number_line.shift(3*UP)
self.number_line_labels = self.number_line.get_number_mobjects()
self.add(self.number_line,self.number_line_labels)
@ -1256,7 +1256,7 @@ class BackToEulerSumScene(PiCreatureScene):
bubble = ThoughtBubble(direction = RIGHT,
width = 4, height = 3,
file_name = "Bubbles_thought.svg")
bubble.next_to(randy,LEFT)
bubble.next_to(randy,LEFT+UP)
bubble.set_fill(color = BLACK, opacity = 1)
self.play(
@ -1295,58 +1295,57 @@ class BackToEulerSumScene(PiCreatureScene):
self.play(SwitchOn(light_source.ambient_light))
# create an indicator and move a copy of it into the thought bubble
# create an indicator that will move along the number line
indicator = LightIndicator(color = LIGHT_COLOR,
radius = INDICATOR_RADIUS,
opacity_for_unit_intensity = 0.2, #OPACITY_FOR_UNIT_INTENSITY,
show_reading = False
)
)
indicator_reading = euler_sum[0]
indicator_reading.scale_to_fit_height(0.5 * indicator.get_height())
indicator_reading.move_to(indicator.get_center())
indicator.add(indicator_reading)
indicator.tex_reading = indicator_reading
indicator.foreground.set_fill(None,opacities[0])
indicator.move_to(point)
indicator.set_intensity(intensities[0])
self.play(FadeIn(indicator))
indicator_copy = indicator.deepcopy()
self.add_foreground_mobject(indicator_copy)
self.play(indicator_copy.move_to, bubble)
moving_light_source = light_source.deepcopy()
ls = []
ls.append(moving_light_source)
self.add_foreground_mobject(indicator)
collection_point = np.array([-5,2,0])
for i in range(2,NUM_VISIBLE_CONES + 1):
for i in range(2, NUM_VISIBLE_CONES + 1):
previous_point = self.number_line.number_to_point(i - 1)
point = self.number_line.number_to_point(i)
indicator_copy = indicator.deepcopy()
indicator_copy.move_to(previous_point)
self.add_foreground_mobject(indicator_copy)
# Create and position the target indicator (next on number line).
indicator_target = indicator.deepcopy()
indicator_target.move_to(point)
ls[-1].set_max_opacity_ambient(0.0001)
self.add(ls[-1].ambient_light)
ls.append(ls[-1].deepcopy())
ls[-1].move_source_to(point)
ls[-1].set_max_opacity_ambient(0.5)
bubble_indicator = indicator_copy.deepcopy()
# Here we make a copy that will move into the thought bubble.
bubble_indicator = indicator.deepcopy()
# And its target
bubble_indicator_target = bubble_indicator.deepcopy()
bubble_indicator_target.set_intensity(intensities[i-1])
bubble_indicator_target.reading = euler_sum[-2+2*i]
bubble_indicator_target.set_intensity(intensities[i - 2])
# give the target the appropriate reading
bubble_indicator_target.remove(bubble_indicator_target.tex_reading)
bubble_indicator_target.tex_reading = euler_sum[2*i-4]
bubble_indicator_target.add(bubble_indicator_target.tex_reading)
# center it in the indicator
bubble_indicator_target.tex_reading.move_to(
bubble_indicator_target.get_center())
bubble_indicator_target.reading.scale_to_fit_height(0.8*indicator.get_height())
bubble_indicator_target.move_to(bubble)
# position the target in the thought bubble
print "center:", bubble_indicator_target.get_center()
bubble_indicator_target.move_to(collection_point)
print "-center:", bubble_indicator_target.get_center()
self.add_foreground_mobject(bubble_indicator)
@ -1355,11 +1354,13 @@ class BackToEulerSumScene(PiCreatureScene):
)
self.play(
Transform(ls[-2], ls[-1]),
Transform(indicator_copy,indicator_target),
Transform(indicator,indicator_target),
)
new_light = light_source.deepcopy()
new_light.move_source_to(point)
self.play(SwitchOn(new_light.ambient_light))