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Setup for clacks solution2
This commit is contained in:
Grant Sanderson
parent
3aadc1fb78
commit
acb5b2cfea
7 changed files with 138 additions and 88 deletions
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@ -1,8 +0,0 @@
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from active_projects import clacks
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output_directory = "clacks_question"
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all_scenes = [
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clacks.NameIntro,
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clacks.MathAndPhysicsConspiring,
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clacks.LightBouncing,
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]
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@ -6,7 +6,7 @@ from active_projects.clacks.question import BlocksAndWallExample
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class NameBump(BlocksAndWallExample):
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CONFIG = {
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"name": "Magnus Lysfjord",
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"name": "Grant Sanderson",
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"sliding_blocks_config": {
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"block1_config": {
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"mass": 1e6,
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@ -266,6 +266,7 @@ class Wall(Line):
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class BlocksAndWallScene(Scene):
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CONFIG = {
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"include_sound": True,
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"collision_sound": "clack.wav",
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"count_clacks": True,
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"counter_group_shift_vect": LEFT,
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"sliding_blocks_config": {},
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@ -273,7 +274,6 @@ class BlocksAndWallScene(Scene):
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"wall_x": -6,
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"n_wall_ticks": 15,
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"counter_label": "\\# Collisions: ",
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"collision_sound": "clack.wav",
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"show_flash_animations": True,
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"min_time_between_sounds": 0.004,
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}
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@ -345,35 +345,30 @@ class BlocksAndWallScene(Scene):
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return
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self.counter_mob.set_value(n_clacks)
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def create_sound_file(self, clack_data):
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clack_file = os.path.join(SOUND_DIR, self.collision_sound)
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output_file = self.get_movie_file_path(extension='.wav')
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def add_clack_sounds(self, clack_data):
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clack_file = self.collision_sound
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total_time = self.get_time()
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times = [
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time
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for location, time in clack_data
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if time < 300 # In case of any extremes
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if time < total_time
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]
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clack = AudioSegment.from_wav(clack_file)
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total_time = max(times) + 1
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clacks = AudioSegment.silent(int(1000 * total_time))
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last_position = 0
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min_diff = int(1000 * self.min_time_between_sounds)
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last_time = 0
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for time in times:
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position = int(1000 * time)
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d_position = position - last_position
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if d_position < min_diff:
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d_time = time - last_time
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if d_time < self.min_time_between_sounds:
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continue
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if time > self.get_time():
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break
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last_position = position
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clacks = clacks.fade(-50, start=position, end=position + 10)
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clacks = clacks.overlay(
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clack,
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position=position
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last_time = time
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self.add_sound(
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clack_file,
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time_offset=(time - total_time),
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gain=-20,
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)
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clacks.export(output_file, format="wav")
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return output_file
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return self
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def tear_down(self):
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if self.include_sound:
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self.add_clack_sounds(self.clack_data)
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# TODO, this no longer works
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# should use Scene.add_sound instead
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@ -1573,6 +1568,7 @@ class Thumbnail(BlocksAndWallExample, MovingCameraScene):
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"count_clacks": False,
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"show_flash_animations": False,
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"floor_y": -3.0,
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"include_sound": False,
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}
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def setup(self):
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@ -1580,7 +1576,16 @@ class Thumbnail(BlocksAndWallExample, MovingCameraScene):
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BlocksAndWallExample.setup(self)
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def construct(self):
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self.camera_frame.shift(0.9 * UP)
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# self.camera_frame.shift(0.9 * UP)
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self.mobjects.insert(
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0,
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FullScreenFadeRectangle(
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color=DARK_GREY,
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opacity=0.5,
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sheen_direction=UL,
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sheen=0.5,
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),
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)
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self.thicken_lines()
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self.grow_labels()
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self.add_vector()
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15
active_projects/clacks/solution2.py
Normal file
15
active_projects/clacks/solution2.py
Normal file
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@ -0,0 +1,15 @@
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# from active_projects.clacks import question
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# from active_projects.clacks import solution1
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from active_projects.clacks.solution2 import block_collision_scenes
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from active_projects.clacks.solution2 import simple_scenes
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OUTPUT_DIRECTORY = "clacks_solution2"
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ALL_SCENE_CLASSES = [
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# question.Thumbnail,
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# solution1.SolutionThumbnail,
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# question.BlocksAndWallExampleMass1e2,
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# question.BlocksAndWallExampleMass1e4,
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block_collision_scenes.IntroducePreviousTwoVideos,
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block_collision_scenes.PreviousTwoVideos,
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simple_scenes.TwoSolutionsWrapper,
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]
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@ -6,58 +6,71 @@ class PreviousTwoVideos(BlocksAndWallExample):
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CONFIG = {
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"sliding_blocks_config": {
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"block1_config": {
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"mass": 1e4,
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"velocity": -2,
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"width": 3,
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"mass": 1e2,
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"velocity": -1,
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"width": 4,
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"distance": 8,
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},
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"block2_config": {
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"width": 3,
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"width": 4,
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"distance": 3,
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},
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},
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"floor_y": -3,
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"wait_time": 15,
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}
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def setup(self):
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videos = Group(
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ImageMobject
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)
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name_mobs = VGroup(*map(TextMobject, names))
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name_mobs.set_stroke(BLACK, 3, background=True)
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name_mobs.set_fill(LIGHT_GREY, 1)
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name_mobs.set_sheen(3, UL)
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name_mobs.scale(2)
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configs = [
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self.sliding_blocks_config["block1_config"],
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self.sliding_blocks_config["block2_config"],
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]
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for name_mob, config in zip(name_mobs, configs):
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config["width"] = name_mob.get_width()
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self.name_mobs = name_mobs
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super().setup()
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def add_blocks(self):
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super().add_blocks()
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blocks = self.blocks
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name_mobs = self.name_mobs
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videos = Group(
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ImageMobject("ClacksSolution1Thumbnail"),
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ImageMobject("ClacksQuestionThumbnail"),
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)
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for n, video, block in zip([2, 1], videos, blocks):
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block.fade(1)
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video.add(SurroundingRectangle(
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video, buff=0,
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color=BLUE,
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stroke_width=3,
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))
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video.replace(block)
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blocks.fade(1)
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title = TextMobject("Part {}".format(n))
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title.scale(1.5)
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title.next_to(video, UP, MED_SMALL_BUFF)
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video.add(title)
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def update_name_mobs(name_mobs):
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for name_mob, block in zip(name_mobs, self.blocks):
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name_mob.move_to(block)
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target_y = block.get_bottom()[1] + SMALL_BUFF
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curr_y = name_mob[0].get_bottom()[1]
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name_mob.shift((target_y - curr_y) * UP)
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def update_videos(videos):
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for video, block in zip(videos, blocks):
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video.move_to(block, DOWN)
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video.shift(0.04 * UP)
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name_mobs.add_updater(update_name_mobs)
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self.add(name_mobs)
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videos.add_updater(update_videos)
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self.add(videos)
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if self.show_flash_animations:
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self.add(self.clack_flashes.mobject)
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self.videos = videos
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clack_y = self.name_mobs[1].get_center()[1]
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for location, time in self.clack_data:
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location[1] = clack_y
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for block, name_mob in zip(blocks, name_mobs):
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block.label.next_to(name_mob, UP)
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block.label.set_fill(YELLOW, opacity=1)
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class IntroducePreviousTwoVideos(PreviousTwoVideos):
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CONFIG = {
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"show_flash_animations": False,
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"include_sound": False,
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}
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def construct(self):
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blocks = self.blocks
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videos = self.videos
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self.remove(blocks)
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videos.clear_updaters()
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self.remove(videos)
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self.play(FadeInFromLarge(videos[1]))
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self.play(TransformFromCopy(
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videos[0].copy().fade(1).shift(2 * RIGHT),
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videos[0],
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rate_func=lambda t: rush_into(t, 3),
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))
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# self.wait()
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@ -1,17 +1,48 @@
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from big_ol_pile_of_manim_imports import *
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from active_projects.clacks.question import BlocksAndWallExample
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class PreviousTwoVideos(BlocksAndWallExample):
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class TwoSolutionsWrapper(Scene):
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CONFIG = {
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"sliding_blocks_config": {
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"block1_config": {
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"mass": 1e0,
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"velocity": -2,
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}
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},
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"wait_time": 15,
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}
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def construct(self):
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pass
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class ConnectionToOptics(Scene):
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def construct(self):
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e_group, m_group = k_groups = self.get_kinematics_groups()
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self.add(k_groups)
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def get_kinematics_groups(self):
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tex_to_color_map = {
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"m_1": BLUE,
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"m_2": BLUE,
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"v_1": RED,
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"v_2": RED,
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}
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energy_eq = TexMobject(
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"\\frac{1}{2} m_1 (v_1)^2 + "
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"\\frac{1}{2} m_2 (v_2)^2 = "
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"\\text{const.}",
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tex_to_color_map=tex_to_color_map
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)
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momentum_eq = TexMobject(
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"m_1 v_1 + m_2 v_2 = \\text{const.}",
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tex_to_color_map=tex_to_color_map
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)
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energy_label = TextMobject(
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"Conservation of energy"
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)
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momentum_label = TextMobject(
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"Conservation of momentum"
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)
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energy_group = VGroup(energy_eq, energy_label)
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momentum_group = VGroup(momentum_eq, momentum_label)
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groups = VGroup(energy_group, momentum_group)
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for group in groups:
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group.arrange_submobjects(DOWN)
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groups.arrange_submobjects(DOWN, LARGE_BUFF)
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groups.to_edge(LEFT)
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return groups
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@ -1,6 +0,0 @@
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from active_projects.clacks.solution2 import block_collision_scenes
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OUTPUT_DIRECTORY = "clacks_solution2"
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ALL_SCENE_CLASSES = [
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block_collision_scenes.PreviousTwoVideos
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]
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