Merge branch 'master' of https://github.com/3b1b/manim

animation/simple_animations.py

@@ -82,12 +82,10 @@ class Write(ShowCreation):
 
     def establish_run_time(self, mobject):
         num_subs = len(mobject.family_members_with_points())
-        if num_subs < 5:
+        if num_subs < 15:
             self.run_time = 1
-        elif num_subs < 15:
-            self.run_time = 2
         else:
-            self.run_time = 3
+            self.run_time = 2
 
 class DrawBorderThenFill(Animation):
     CONFIG = {
@@ -330,9 +328,9 @@ class LaggedStart(Animation):
             anim.update(alpha)
         return self
 
-    # def clean_up(self, *args, **kwargs):
-    #     for anim in self.subanimations:
-    #         anim.clean_up(*args, **kwargs)
+    def clean_up(self, *args, **kwargs):
+        for anim in self.subanimations:
+            anim.clean_up(*args, **kwargs)
 
 class DelayByOrder(Animation):
     """

animation/transform.py

@@ -59,7 +59,8 @@ class Transform(Animation):
         Animation.clean_up(self, surrounding_scene)
         if self.replace_mobject_with_target_in_scene and surrounding_scene is not None:
             surrounding_scene.remove(self.mobject)
-            surrounding_scene.add(self.original_target_mobject)
+            if not self.remover:
+                surrounding_scene.add(self.original_target_mobject)
 
 class ReplacementTransform(Transform):
     CONFIG = {

camera.py

@@ -141,15 +141,21 @@ class Camera(object):
 
     def get_pen_and_fill(self, vmobject):
         pen = aggdraw.Pen(
-            self.get_stroke_color(vmobject).get_hex_l(),
+            self.color_to_hex_l(self.get_stroke_color(vmobject)),
             max(vmobject.stroke_width, 0)
         )
         fill = aggdraw.Brush(
-            self.get_fill_color(vmobject).get_hex_l(),
+            self.color_to_hex_l(self.get_fill_color(vmobject)),
             opacity = int(255*vmobject.get_fill_opacity())
         )
         return (pen, fill)
 
+    def color_to_hex_l(self, color):
+        try:
+            return color.get_hex_l()
+        except:
+            return Color(BLACK).get_hex_l()
+
     def get_stroke_color(self, vmobject):
         return vmobject.get_stroke_color()
 

constants.py

@@ -6,8 +6,7 @@ DEFAULT_WIDTH  = 1920
 
 LOW_QUALITY_FRAME_DURATION = 1./15
 MEDIUM_QUALITY_FRAME_DURATION = 1./30
-# PRODUCTION_QUALITY_FRAME_DURATION = 1./60
-PRODUCTION_QUALITY_FRAME_DURATION = 1./30
+PRODUCTION_QUALITY_FRAME_DURATION = 1./60
 
 #There might be other configuration than pixel_shape later...
 PRODUCTION_QUALITY_CAMERA_CONFIG = {

helpers.py

@@ -37,7 +37,6 @@ def play_chord(*nums):
 def play_error_sound():
     play_chord(11, 8, 6, 1)
 
-
 def play_finish_sound():
     play_chord(12, 9, 5, 2)
 
@@ -422,7 +421,7 @@ def get_full_image_path(image_file_name):
     for path in possible_paths:
         if os.path.exists(path):
             return path
-    raise IOError("File not Found")
+    raise IOError("File %s not Found"%image_file_name)
 
 def drag_pixels(frames):
     curr = frames[0]

mobject/mobject.py

@@ -399,11 +399,17 @@ class Mobject(object):
 
     ## Color functions
 
-    def highlight(self, color = YELLOW_C, family = True, condition = None):
+    def highlight(self, color = YELLOW_C, family = True):
         """
         Condition is function which takes in one arguments, (x, y, z).
+        Here it just recurses to submobjects, but in subclasses this 
+        should be further implemented based on the the inner workings
+        of color
         """
-        raise Exception("Not implemented")
+        if family:
+            for submob in self.submobjects:
+                submob.highlight(color, family = family)
+        return self
 
     def gradient_highlight(self, *colors):
         self.submobject_gradient_highlight(*colors)
@@ -446,11 +452,14 @@ class Mobject(object):
         return self.color
     ##
 
-    def save_state(self):
+    def save_state(self, use_deepcopy = False):
         if hasattr(self, "saved_state"):
             #Prevent exponential growth of data
             self.saved_state = None
-        self.saved_state = self.copy()
+        if use_deepcopy:
+            self.saved_state = self.deepcopy()
+        else:
+            self.saved_state = self.copy()
         return self
 
     def restore(self):

mobject/point_cloud_mobject.py

@@ -30,15 +30,11 @@ class PMobject(Mobject):
         self.rgbas = np.append(self.rgbas, rgbas, axis = 0)
         return self
 
-    def highlight(self, color = YELLOW_C, family = True, condition = None):
+    def highlight(self, color = YELLOW_C, family = True):
         rgba = color_to_rgba(color)
         mobs = self.family_members_with_points() if family else [self]
         for mob in mobs:
-            if condition:
-                to_change = np.apply_along_axis(condition, 1, mob.points)
-                mob.rgbas[to_change, :] = rgba
-            else:
-                mob.rgbas[:,:] = rgba
+            mob.rgbas[:,:] = rgba
         return self
 
     def gradient_highlight(self, start_color, end_color):

mobject/tex_mobject.py

@@ -26,7 +26,6 @@ class TexSymbol(VMobjectFromSVGPathstring):
         self.set_stroke(width = added_width + mobject.get_stroke_width())
         self.set_fill(opacity = opacity)
 
-
 class TexMobject(SVGMobject):
     CONFIG = {
         "template_tex_file" : TEMPLATE_TEX_FILE,
@@ -264,6 +263,43 @@ class Brace(TexMobject):
         vect = self.get_tip() - self.get_center()
         return vect/np.linalg.norm(vect)
 
+class BulletedList(TextMobject):
+    CONFIG = {
+        "buff" : MED_LARGE_BUFF,
+        "dot_scale_factor" : 2,
+        #Have to include because of handle_multiple_args implementation
+        "template_tex_file" : TEMPLATE_TEXT_FILE,
+        "alignment" : "",
+    }
+    def __init__(self, *items, **kwargs):
+        line_separated_items = [s + "\\\\" for s in items]
+        TextMobject.__init__(self, *line_separated_items, **kwargs)
+        for part in self:
+            dot = TexMobject("\\cdot").scale(self.dot_scale_factor)
+            dot.next_to(part[0], LEFT, SMALL_BUFF)
+            part.add_to_back(dot)
+        self.arrange_submobjects(
+            DOWN, 
+            aligned_edge = LEFT,
+            buff = self.buff
+        )
+
+    def fade_all_but(self, index_or_string, opacity = 0.5):
+        arg = index_or_string
+        if isinstance(arg, str):
+            part = self.get_part_by_tex(arg)
+        elif isinstance(arg, int):
+            part = self.submobjects[arg]
+        else:
+            raise Exception("Expected int or string, got {0}".format(arg))
+        for other_part in self.submobjects:
+            if other_part is part:
+                other_part.set_fill(opacity = 1)
+            else:
+                other_part.set_fill(opacity = opacity)
+
+##########
+
 def tex_hash(expression, template_tex_file):
     return str(hash(expression + template_tex_file))
 

mobject/vectorized_mobject.py

@@ -97,13 +97,13 @@ class VMobject(Mobject):
 
     def get_fill_color(self):
         try:
-            self.fill_rgb = np.clip(self.fill_rgb, 0, 1)
+            self.fill_rgb = np.clip(self.fill_rgb, 0.0, 1.0)
             return Color(rgb = self.fill_rgb)
         except:
             return Color(WHITE)
 
     def get_fill_opacity(self):
-        return self.fill_opacity
+        return np.clip(self.fill_opacity, 0, 1)
 
     def get_stroke_color(self):
         try:
@@ -113,7 +113,7 @@ class VMobject(Mobject):
             return Color(WHITE)
 
     def get_stroke_width(self):
-        return self.stroke_width
+        return max(0, self.stroke_width)
 
     def get_color(self):
         if self.fill_opacity == 0:

nn/network.py

@@ -21,12 +21,12 @@ import cPickle
 from nn.mnist_loader import load_data_wrapper
 
 NN_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
-# PRETRAINED_DATA_FILE = os.path.join(NN_DIRECTORY, "pretrained_weights_and_biases_36")
+# PRETRAINED_DATA_FILE = os.path.join(NN_DIRECTORY, "pretrained_weights_and_biases_80")
 # PRETRAINED_DATA_FILE = os.path.join(NN_DIRECTORY, "pretrained_weights_and_biases_ReLU")
 PRETRAINED_DATA_FILE = os.path.join(NN_DIRECTORY, "pretrained_weights_and_biases")
 IMAGE_MAP_DATA_FILE = os.path.join(NN_DIRECTORY, "image_map")
 # PRETRAINED_DATA_FILE = "/Users/grant/cs/manim/nn/pretrained_weights_and_biases_on_zero"
-# DEFAULT_LAYER_SIZES = [28**2, 36, 10]
+# DEFAULT_LAYER_SIZES = [28**2, 80, 10]
 DEFAULT_LAYER_SIZES = [28**2, 16, 16, 10]
 
 class Network(object):

nn/part1.py

@@ -122,7 +122,7 @@ class NetworkMobject(VGroup):
         "neuron_fill_color" : GREEN,
         "edge_color" : LIGHT_GREY,
         "edge_stroke_width" : 2,
-        "edge_propogation_color" : GREEN,
+        "edge_propogation_color" : YELLOW,
         "edge_propogation_time" : 1,
         "max_shown_neurons" : 16,
         "brace_for_large_layers" : True,
@@ -196,21 +196,28 @@ class NetworkMobject(VGroup):
         for l1, l2 in zip(self.layers[:-1], self.layers[1:]):
             edge_group = VGroup()
             for n1, n2 in it.product(l1.neurons, l2.neurons):
-                edge = Line(
-                    n1.get_center(),
-                    n2.get_center(),
-                    buff = self.neuron_radius,
-                    stroke_color = self.edge_color,
-                    stroke_width = self.edge_stroke_width,
-                )
+                edge = self.get_edge(n1, n2)
                 edge_group.add(edge)
                 n1.edges_out.add(edge)
                 n2.edges_in.add(edge)
             self.edge_groups.add(edge_group)
         self.add_to_back(self.edge_groups)
 
+    def get_edge(self, neuron1, neuron2):
+        return Line(
+            neuron1.get_center(),
+            neuron2.get_center(),
+            buff = self.neuron_radius,
+            stroke_color = self.edge_color,
+            stroke_width = self.edge_stroke_width,
+        )
+
     def get_active_layer(self, layer_index, activation_vector):
         layer = self.layers[layer_index].deepcopy()
+        self.activate_layer(layer, activation_vector)
+        return layer
+
+    def activate_layer(self, layer, activation_vector):
         n_neurons = len(layer.neurons)
         av = activation_vector
         def arr_to_num(arr):
@@ -238,6 +245,11 @@ class NetworkMobject(VGroup):
             )
         return layer
 
+    def activate_layers(self, input_vector):
+        activations = self.neural_network.get_activation_of_all_layers(input_vector)
+        for activation, layer in zip(activations, self.layers):
+            self.activate_layer(layer, activation)
+
     def deactivate_layers(self):
         all_neurons = VGroup(*it.chain(*[
             layer.neurons
@@ -2980,6 +2992,7 @@ class ContinualEdgeUpdate(ContinualAnimation):
         "max_stroke_width" : 3,
         "stroke_width_exp" : 7,
         "n_cycles" : 5,
+        "colors" : [GREEN, GREEN, GREEN, RED],
     }
     def __init__(self, network_mob, **kwargs):
         digest_config(self, kwargs)
@@ -2988,7 +3001,7 @@ class ContinualEdgeUpdate(ContinualAnimation):
         self.move_to_targets = []
         for edge in edges:
             edge.colors = [
-                random.choice([GREEN, GREEN, GREEN, RED])
+                random.choice(self.colors)
                 for x in range(n_cycles)
             ]
             msw = self.max_stroke_width

scene/scene.py

@@ -61,6 +61,10 @@ class Scene(object):
         """
         pass
 
+    def setup_bases(self):
+        for base in self.__class__.__bases__:
+            base.setup(self)
+
     def construct(self):
         pass #To be implemented in subclasses
 
@@ -71,20 +75,24 @@ class Scene(object):
         self.name = name
         return self
 
-    def update_shared_locals(self, *keys):
+    def set_variables_as_attrs(self, *objects, **newly_named_objects):
         """
-        Often in constructing a scene, it's nice to refer to
-        what was a local variable from a previous subroutine,
-        so a dict of shared_locals is recorded, and it can be updated
-        by passing in the objects directly.
+        This method is slightly hacky, making it a little easier
+        for certain methods (typically subroutines of construct)
+        to share local variables.
         """
         caller_locals = inspect.currentframe().f_back.f_locals
-        self.shared_locals.update(dict([
-            (key, caller_locals[key])
-            for key in keys
-        ]))
+        for key, value in caller_locals.items():
+            for o in objects:
+                if value is o:
+                    setattr(self, key, value)
+        for key, value in newly_named_objects.items():
+            setattr(self, key, value)
         return self
 
+    def get_attrs(self, *keys):
+        return [getattr(self, key) for key in keys]
+
     ### Only these methods should touch the camera
 
     def set_camera(self, camera):
@@ -341,7 +349,7 @@ class Scene(object):
                 animations.pop()
                 #method should already have target then.
             else:
-                mobject.target = mobject.deepcopy()
+                mobject.target = mobject.copy()
             state["curr_method"].im_func(
                 mobject.target, *state["method_args"]
             )
@@ -479,14 +487,14 @@ class Scene(object):
 
         command = [
             FFMPEG_BIN,
-            '-y',                 # overwrite output file if it exists
+            '-y', # overwrite output file if it exists
             '-f', 'rawvideo',
             '-vcodec','rawvideo',
             '-s', '%dx%d'%(width, height), # size of one frame
             '-pix_fmt', 'rgba',
             '-r', str(fps), # frames per second
-            '-i', '-',      # The imput comes from a pipe
-            '-an',          # Tells FFMPEG not to expect any audio
+            '-i', '-', # The imput comes from a pipe
+            '-an', # Tells FFMPEG not to expect any audio
             '-vcodec', 'mpeg',
             '-c:v', 'libx264',
             '-pix_fmt', 'yuv420p',

topics/characters.py

@@ -276,7 +276,7 @@ class Eyes(VMobject):
 
         pi = Randolph(mode = mode)
         eyes = VGroup(pi.eyes, pi.pupils)
-        eyes.scale_to_fit_height(self.height)
+        pi.scale(self.height/eyes.get_height())
         if self.submobjects:
             eyes.move_to(self, DOWN)
         else:
@@ -526,18 +526,17 @@ class PiCreatureScene(Scene):
                 lambda anim : pi_creature in anim.mobject.submobject_family(),
                 animations
             )
-            if anims_with_pi_creature:
-                for anim in anims_with_pi_creature:
-                    if isinstance(anim, Transform):
-                        index = anim.mobject.submobject_family().index(pi_creature)
-                        target_family = anim.target_mobject.submobject_family()
-                        target = target_family[index]
-                        if isinstance(target, PiCreature):
-                            target.look_at(point_of_interest)
-                continue
-            animations.append(
-                ApplyMethod(pi_creature.look_at, point_of_interest)
-            )
+            for anim in anims_with_pi_creature:
+                if isinstance(anim, Transform):
+                    index = anim.mobject.submobject_family().index(pi_creature)
+                    target_family = anim.target_mobject.submobject_family()
+                    target = target_family[index]
+                    if isinstance(target, PiCreature):
+                        target.look_at(point_of_interest)
+            if not anims_with_pi_creature:
+                animations.append(
+                    ApplyMethod(pi_creature.look_at, point_of_interest)
+                )
         return animations
 
     def blink(self):

topics/common_scenes.py

@@ -61,36 +61,7 @@ class OpeningQuote(Scene):
 
 class PatreonThanks(Scene):
     CONFIG = {
-        "specific_patrons" : [
-            "Ali Yahya",
-            "Meshal Alshammari",
-            "CrypticSwarm    ",
-            "Justin Helps",
-            "Ankit Agarwal",
-            "Yu Jun",
-            "Shelby Doolittle",
-            "Dave Nicponski",
-            "Damion Kistler",
-            "Juan Benet",
-            "Othman Alikhan",
-            "Markus Persson",
-            "Dan Buchoff",
-            "Derek Dai",
-            "Joseph John Cox",
-            "Luc Ritchie",
-            "Nils Schneider",
-            "Mathew Bramson",
-            "Guido Gambardella",
-            "Jerry Ling",
-            "Mark Govea",
-            "Vecht",
-            "Shimin Kuang",
-            "Rish Kundalia",
-            "Achille Brighton",
-            "Kirk Werklund",
-            "Ripta Pasay",
-            "Felipe Diniz",
-        ],
+        "specific_patrons" : [],
         "max_patron_group_size" : 20,
         "patron_scale_val" : 0.8,
 

topics/geometry.py

@@ -155,6 +155,7 @@ class Line(VMobject):
     def put_start_and_end_on(self, new_start, new_end):
         self.start = new_start
         self.end = new_end
+        self.buff = 0
         self.generate_points()
         return
 
@@ -242,9 +243,13 @@ class Arrow(Line):
         if len(args) == 1:
             args = (points[0]+UP+LEFT, points[0])
         Line.__init__(self, *args, **kwargs)
-        self.add_tip()
+        self.init_tip()
         if self.use_rectangular_stem and not hasattr(self, "rect"):
             self.add_rectangular_stem()
+        self.init_colors()
+
+    def init_tip(self):
+        self.tip = self.add_tip()
 
     def add_tip(self, add_at_end = True):
         tip = VMobject(
@@ -253,11 +258,11 @@ class Arrow(Line):
             fill_color = self.color,
             fill_opacity = 1,
             stroke_color = self.color,
+            stroke_width = 0,
         )
         self.set_tip_points(tip, add_at_end, preserve_normal = False)
-        self.tip = tip
-        self.add(self.tip)
-        self.init_colors()
+        self.add(tip)
+        return tip
 
     def add_rectangular_stem(self):
         self.rect = Rectangle(
@@ -283,6 +288,10 @@ class Arrow(Line):
             self.rectangular_stem_width,
             self.max_stem_width_to_tip_width_ratio*tip_base_width,
         )
+        if hasattr(self, "second_tip"):
+            start = center_of_mass(
+                self.second_tip.get_anchors()[1:]
+            )
         self.rect.set_points_as_corners([
             tip_base + perp_vect*width/2,
             start + perp_vect*width/2,
@@ -310,7 +319,7 @@ class Arrow(Line):
 
         indices = (-2, -1) if add_at_end else (1, 0)
         pre_end_point, end_point = [
-            self.points[index]
+            self.get_anchors()[index]
             for index in indices
         ]
         vect = end_point - pre_end_point
@@ -319,7 +328,6 @@ class Arrow(Line):
             if np.linalg.norm(v) == 0:
                 v[0] = 1
             v *= tip_length/np.linalg.norm(v)
-
         ratio = self.tip_width_to_length_ratio
         tip.set_points_as_corners([
             end_point, 
@@ -360,7 +368,8 @@ class Arrow(Line):
         Line.scale(self, scale_factor, **kwargs)
         if self.preserve_tip_size_when_scaling:
             self.set_tip_points(self.tip)
-        self.set_rectangular_stem_points()
+        if self.use_rectangular_stem:
+            self.set_rectangular_stem_points()
         return self
 
 class Vector(Arrow):
@@ -374,9 +383,9 @@ class Vector(Arrow):
         Arrow.__init__(self, ORIGIN, direction, **kwargs)
 
 class DoubleArrow(Arrow):
-    def __init__(self, *args, **kwargs):
-        Arrow.__init__(self, *args, **kwargs)
-        self.add_tip(add_at_end = False)
+    def init_tip(self):
+        self.tip = self.add_tip()
+        self.second_tip = self.add_tip(add_at_end = False)
 
 class CubicBezier(VMobject):
     def __init__(self, points, **kwargs):

topics/numerals.py

@@ -11,9 +11,9 @@ class DecimalNumber(VMobject):
         "num_decimal_points" : 2,
         "digit_to_digit_buff" : 0.05
     }
-    def __init__(self, float_num, **kwargs):
-        digest_config(self, kwargs)
-        num_string = '%.*f'%(self.num_decimal_points, float_num)
+    def __init__(self, number, **kwargs):
+        digest_config(self, kwargs, locals())
+        num_string = '%.*f'%(self.num_decimal_points, number)
         VMobject.__init__(self, *[
             TexMobject(char)
             for char in num_string
@@ -22,7 +22,7 @@ class DecimalNumber(VMobject):
             buff = self.digit_to_digit_buff,
             aligned_edge = DOWN
         )
-        if float_num < 0:
+        if number < 0:
             minus = self.submobjects[0]
             minus.next_to(
                 self.submobjects[1], LEFT,
@@ -46,13 +46,15 @@ class Integer(VGroup):
 
 class ChangingDecimal(Animation):
     CONFIG = {
-        "num_decimal_points" : 2,
+        "num_decimal_points" : None,
         "spare_parts" : 2,
         "position_update_func" : None,
         "tracked_mobject" : None,
     }
     def __init__(self, decimal_number, number_update_func, **kwargs):
         digest_config(self, kwargs, locals())
+        if self.num_decimal_points is None:
+            self.num_decimal_points = decimal_number.num_decimal_points
         decimal_number.add(*[
             VectorizedPoint(decimal_number.get_corner(DOWN+LEFT))
             for x in range(self.spare_parts)]
@@ -65,9 +67,9 @@ class ChangingDecimal(Animation):
 
     def update_number(self, alpha):
         decimal = self.decimal_number
+        new_number = self.number_update_func(alpha)
         new_decimal = DecimalNumber(
-            self.number_update_func(alpha),
-            num_decimal_points = self.num_decimal_points
+            new_number, num_decimal_points = self.num_decimal_points
         )
         new_decimal.replace(decimal, dim_to_match = 1)
         new_decimal.highlight(decimal.get_color())
@@ -78,6 +80,7 @@ class ChangingDecimal(Animation):
         ]
         for sm1, sm2 in zip(*families):
             sm1.interpolate(sm1, sm2, 1)
+        self.mobject.number = new_number
 
     def update_position(self):
         if self.position_update_func is not None: