import numpy as np from constants import * from mobject.mobject import Mobject from mobject.svg.svg_mobject import SVGMobject from mobject.svg.tex_mobject import TextMobject from mobject.types.vectorized_mobject import VGroup from mobject.types.vectorized_mobject import VMobject from mobject.svg.drawings import ThoughtBubble from animation.transform import Transform from utils.config_ops import digest_config from utils.rate_functions import squish_rate_func from utils.rate_functions import there_and_back PI_CREATURE_DIR = os.path.join(MEDIA_DIR, "designs", "PiCreature") PI_CREATURE_SCALE_FACTOR = 0.5 LEFT_EYE_INDEX = 0 RIGHT_EYE_INDEX = 1 LEFT_PUPIL_INDEX = 2 RIGHT_PUPIL_INDEX = 3 BODY_INDEX = 4 MOUTH_INDEX = 5 class PiCreature(SVGMobject): CONFIG = { "color" : BLUE_E, "file_name_prefix" : "PiCreatures", "stroke_width" : 0, "stroke_color" : BLACK, "fill_opacity" : 1.0, "propagate_style_to_family" : True, "height" : 3, "corner_scale_factor" : 0.75, "flip_at_start" : False, "is_looking_direction_purposeful" : False, "start_corner" : None, #Range of proportions along body where arms are "right_arm_range" : [0.55, 0.7], "left_arm_range" : [.34, .462], } def __init__(self, mode = "plain", **kwargs): digest_config(self, kwargs) self.parts_named = False try: svg_file = os.path.join( PI_CREATURE_DIR, "%s_%s.svg"%(self.file_name_prefix, mode) ) SVGMobject.__init__(self, file_name = svg_file, **kwargs) except: warnings.warn("No %s design with mode %s"%(self.file_name_prefix, mode)) svg_file = os.path.join( FILE_DIR, "PiCreatures_plain.svg", ) SVGMobject.__init__(self, file_name = svg_file, **kwargs) if self.flip_at_start: self.flip() if self.start_corner is not None: self.to_corner(self.start_corner) def name_parts(self): self.mouth = self.submobjects[MOUTH_INDEX] self.body = self.submobjects[BODY_INDEX] self.pupils = VGroup(*[ self.submobjects[LEFT_PUPIL_INDEX], self.submobjects[RIGHT_PUPIL_INDEX] ]) self.eyes = VGroup(*[ self.submobjects[LEFT_EYE_INDEX], self.submobjects[RIGHT_EYE_INDEX] ]) self.eye_parts = VGroup(self.eyes, self.pupils) self.parts_named = True def init_colors(self): SVGMobject.init_colors(self) if not self.parts_named: self.name_parts() self.mouth.set_fill(BLACK, opacity = 1) self.body.set_fill(self.color, opacity = 1) self.pupils.set_fill(BLACK, opacity = 1) self.eyes.set_fill(WHITE, opacity = 1) return self def copy(self): copy_mobject = SVGMobject.copy(self) copy_mobject.name_parts() return copy_mobject def set_color(self, color): self.body.set_fill(color) return self def change_mode(self, mode): new_self = self.__class__( mode = mode, color = self.color ) new_self.scale_to_fit_height(self.get_height()) if self.is_flipped() ^ new_self.is_flipped(): new_self.flip() new_self.shift(self.eyes.get_center() - new_self.eyes.get_center()) if hasattr(self, "purposeful_looking_direction"): new_self.look(self.purposeful_looking_direction) Transform(self, new_self).update(1) return self def look(self, direction): norm = np.linalg.norm(direction) if norm == 0: return direction /= norm self.purposeful_looking_direction = direction for pupil, eye in zip(self.pupils.split(), self.eyes.split()): pupil_radius = pupil.get_width()/2. eye_radius = eye.get_width()/2. pupil.move_to(eye) if direction[1] < 0: pupil.shift(pupil_radius*DOWN/3) pupil.shift(direction*(eye_radius-pupil_radius)) bottom_diff = eye.get_bottom()[1] - pupil.get_bottom()[1] if bottom_diff > 0: pupil.shift(bottom_diff*UP) #TODO, how to handle looking up... # top_diff = eye.get_top()[1]-pupil.get_top()[1] # if top_diff < 0: # pupil.shift(top_diff*UP) return self def look_at(self, point_or_mobject): if isinstance(point_or_mobject, Mobject): point = point_or_mobject.get_center() else: point = point_or_mobject self.look(point - self.eyes.get_center()) return self def change(self, new_mode, look_at_arg = None): self.change_mode(new_mode) if look_at_arg is not None: self.look_at(look_at_arg) return self def get_looking_direction(self): return np.sign(np.round( self.pupils.get_center() - self.eyes.get_center(), decimals = 2 )) def is_flipped(self): return self.eyes.submobjects[0].get_center()[0] > \ self.eyes.submobjects[1].get_center()[0] def blink(self): eye_parts = self.eye_parts eye_bottom_y = eye_parts.get_bottom()[1] eye_parts.apply_function( lambda p : [p[0], eye_bottom_y, p[2]] ) return self def to_corner(self, vect = None, **kwargs): if vect is not None: SVGMobject.to_corner(self, vect, **kwargs) else: self.scale(self.corner_scale_factor) self.to_corner(DOWN+LEFT, **kwargs) return self def get_bubble(self, *content, **kwargs): bubble_class = kwargs.get("bubble_class", ThoughtBubble) bubble = bubble_class(**kwargs) if len(content) > 0: if isinstance(content[0], str): content_mob = TextMobject(*content) else: content_mob = content[0] bubble.add_content(content_mob) if "height" not in kwargs and "width" not in kwargs: bubble.resize_to_content() bubble.pin_to(self) self.bubble = bubble return bubble def make_eye_contact(self, pi_creature): self.look_at(pi_creature.eyes) pi_creature.look_at(self.eyes) return self def shrug(self): self.change_mode("shruggie") top_mouth_point, bottom_mouth_point = [ self.mouth.points[np.argmax(self.mouth.points[:,1])], self.mouth.points[np.argmin(self.mouth.points[:,1])] ] self.look(top_mouth_point - bottom_mouth_point) return self def get_arm_copies(self): body = self.body return VGroup(*[ body.copy().pointwise_become_partial(body, *alpha_range) for alpha_range in self.right_arm_range, self.left_arm_range ]) def get_all_pi_creature_modes(): result = [] prefix = "%s_"%PiCreature.CONFIG["file_name_prefix"] suffix = ".svg" for file in os.listdir(PI_CREATURE_DIR): if file.startswith(prefix) and file.endswith(suffix): result.append( file[len(prefix):-len(suffix)] ) return result class Randolph(PiCreature): pass #Nothing more than an alternative name class Mortimer(PiCreature): CONFIG = { "color" : GREY_BROWN, "flip_at_start" : True, } class Mathematician(PiCreature): CONFIG = { "color" : GREY, } class BabyPiCreature(PiCreature): CONFIG = { "scale_factor" : 0.5, "eye_scale_factor" : 1.2, "pupil_scale_factor" : 1.3 } def __init__(self, *args, **kwargs): PiCreature.__init__(self, *args, **kwargs) self.scale(self.scale_factor) self.shift(LEFT) self.to_edge(DOWN, buff = LARGE_BUFF) eyes = VGroup(self.eyes, self.pupils) eyes_bottom = eyes.get_bottom() eyes.scale(self.eye_scale_factor) eyes.move_to(eyes_bottom, aligned_edge = DOWN) looking_direction = self.get_looking_direction() for pupil in self.pupils: pupil.scale_in_place(self.pupil_scale_factor) self.look(looking_direction) class TauCreature(PiCreature): CONFIG = { "file_name_prefix" : "TauCreatures" } class ThreeLeggedPiCreature(PiCreature): CONFIG = { "file_name_prefix" : "ThreeLeggedPiCreatures" } class Eyes(VMobject): CONFIG = { "height" : 0.3, "thing_looked_at" : None, "mode" : "plain", } def __init__(self, mobject, **kwargs): VMobject.__init__(self, **kwargs) self.mobject = mobject self.submobjects = self.get_eyes().submobjects def get_eyes(self, mode = None, thing_to_look_at = None): mode = mode or self.mode if thing_to_look_at is None: thing_to_look_at = self.thing_looked_at pi = Randolph(mode = mode) eyes = VGroup(pi.eyes, pi.pupils) pi.scale(self.height/eyes.get_height()) if self.submobjects: eyes.move_to(self, DOWN) else: eyes.move_to(self.mobject.get_top(), DOWN) if thing_to_look_at is not None: pi.look_at(thing_to_look_at) return eyes def change_mode_anim(self, mode, **kwargs): self.mode = mode return Transform(self, self.get_eyes(mode = mode), **kwargs) def look_at_anim(self, point_or_mobject, **kwargs): self.thing_looked_at = point_or_mobject return Transform( self, self.get_eyes(thing_to_look_at = point_or_mobject), **kwargs ) def blink_anim(self, **kwargs): target = self.copy() bottom_y = self.get_bottom()[1] for submob in target: submob.apply_function( lambda p : [p[0], bottom_y, p[2]] ) if "rate_func" not in kwargs: kwargs["rate_func"] = squish_rate_func(there_and_back) return Transform(self, target, **kwargs)