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502 lines
18 KiB
Python
502 lines
18 KiB
Python
import itertools as it
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import numpy as np
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import pyperclip
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from manimlib.animation.fading import FadeIn
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from manimlib.constants import ARROW_SYMBOLS, CTRL_SYMBOL, DELETE_SYMBOL, SHIFT_SYMBOL
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from manimlib.constants import COMMAND_MODIFIER, SHIFT_MODIFIER
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from manimlib.constants import DL, DOWN, DR, LEFT, ORIGIN, RIGHT, UL, UP, UR
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from manimlib.constants import FRAME_WIDTH, SMALL_BUFF
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from manimlib.constants import MANIM_COLORS, WHITE, GREY_C
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from manimlib.mobject.geometry import Rectangle
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from manimlib.mobject.geometry import Square
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from manimlib.mobject.mobject import Group
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from manimlib.mobject.mobject import Mobject
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from manimlib.mobject.numbers import DecimalNumber
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from manimlib.mobject.svg.tex_mobject import Tex
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from manimlib.mobject.svg.text_mobject import Text
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from manimlib.mobject.types.dot_cloud import DotCloud
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from manimlib.mobject.types.vectorized_mobject import VGroup
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from manimlib.mobject.types.vectorized_mobject import VHighlight
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from manimlib.mobject.types.vectorized_mobject import VMobject
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from manimlib.scene.scene import Scene
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from manimlib.utils.family_ops import extract_mobject_family_members
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from manimlib.utils.space_ops import get_norm
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from manimlib.utils.tex_file_writing import LatexError
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SELECT_KEY = 's'
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GRAB_KEY = 'g'
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X_GRAB_KEY = 'h'
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Y_GRAB_KEY = 'v'
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GRAB_KEYS = [GRAB_KEY, X_GRAB_KEY, Y_GRAB_KEY]
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RESIZE_KEY = 't'
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COLOR_KEY = 'c'
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CURSOR_LOCATION_KEY = 'l'
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# Note, a lot of the functionality here is still buggy and very much a work in progress.
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class InteractiveScene(Scene):
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"""
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To select mobjects on screen, hold ctrl and move the mouse to highlight a region,
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or just tap ctrl to select the mobject under the cursor.
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Pressing command + t will toggle between modes where you either select top level
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mobjects part of the scene, or low level pieces.
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Hold 'g' to grab the selection and move it around
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Hold 'h' to drag it constrained in the horizontal direction
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Hold 'v' to drag it constrained in the vertical direction
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Hold 't' to resize selection, adding 'shift' to resize with respect to a corner
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Command + 'c' copies the ids of selections to clipboard
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Command + 'v' will paste either:
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- The copied mobject
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- A Tex mobject based on copied LaTeX
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- A Text mobject based on copied Text
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Command + 'z' restores selection back to its original state
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Command + 's' saves the selected mobjects to file
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"""
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corner_dot_config = dict(
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color=WHITE,
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radius=0.05,
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glow_factor=1.0,
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)
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selection_rectangle_stroke_color = WHITE
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selection_rectangle_stroke_width = 1.0
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colors = MANIM_COLORS
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selection_nudge_size = 0.05
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cursor_location_config = dict(
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font_size=14,
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fill_color=GREY_C,
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num_decimal_places=3,
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)
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def setup(self):
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self.selection = Group()
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self.selection_highlight = Group()
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self.selection_rectangle = self.get_selection_rectangle()
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self.color_palette = self.get_color_palette()
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self.cursor_location_label = self.get_cursor_location_label()
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self.unselectables = [
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self.selection,
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self.selection_highlight,
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self.selection_rectangle,
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self.cursor_location_label,
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self.camera.frame
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]
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self.select_top_level_mobs = True
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self.regenerate_selection_search_set()
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self.is_selecting = False
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self.is_grabbing = False
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self.add(self.selection_highlight)
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def get_selection_rectangle(self):
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rect = Rectangle(
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stroke_color=self.selection_rectangle_stroke_color,
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stroke_width=self.selection_rectangle_stroke_width,
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)
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rect.fix_in_frame()
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rect.fixed_corner = ORIGIN
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rect.add_updater(self.update_selection_rectangle)
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return rect
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def update_selection_rectangle(self, rect):
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p1 = rect.fixed_corner
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p2 = self.mouse_point.get_center()
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rect.set_points_as_corners([
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p1, [p2[0], p1[1], 0],
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p2, [p1[0], p2[1], 0],
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p1,
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])
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return rect
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def get_color_palette(self):
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palette = VGroup(*(
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Square(fill_color=color, fill_opacity=1, side_length=1)
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for color in self.colors
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))
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palette.set_stroke(width=0)
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palette.arrange(RIGHT, buff=0.5)
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palette.set_width(FRAME_WIDTH - 0.5)
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palette.to_edge(DOWN, buff=SMALL_BUFF)
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palette.fix_in_frame()
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return palette
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def get_cursor_location_label(self):
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decimals = VGroup(*(
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DecimalNumber(**self.cursor_location_config)
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for n in range(3)
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))
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def update_coords(decimals):
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for mob, coord in zip(decimals, self.mouse_point.get_location()):
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mob.set_value(coord)
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decimals.arrange(RIGHT, buff=decimals.get_height())
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decimals.to_corner(DR, buff=SMALL_BUFF)
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decimals.fix_in_frame()
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return decimals
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decimals.add_updater(update_coords)
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return decimals
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# Related to selection
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def toggle_selection_mode(self):
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self.select_top_level_mobs = not self.select_top_level_mobs
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self.refresh_selection_scope()
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self.regenerate_selection_search_set()
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def get_selection_search_set(self) -> list[Mobject]:
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return self.selection_search_set
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def regenerate_selection_search_set(self):
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selectable = list(filter(
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lambda m: m not in self.unselectables,
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self.mobjects
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))
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if self.select_top_level_mobs:
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self.selection_search_set = selectable
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else:
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self.selection_search_set = [
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submob
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for mob in selectable
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for submob in mob.family_members_with_points()
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]
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def refresh_selection_scope(self):
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curr = list(self.selection)
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if self.select_top_level_mobs:
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self.selection.set_submobjects([
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mob
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for mob in self.mobjects
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if any(sm in mob.get_family() for sm in curr)
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])
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self.selection.refresh_bounding_box(recurse_down=True)
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else:
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self.selection.set_submobjects(
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extract_mobject_family_members(
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curr, exclude_pointless=True,
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)
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)
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self.refresh_selection_highlight()
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def get_corner_dots(self, mobject: Mobject) -> Mobject:
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dots = DotCloud(**self.corner_dot_config)
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radius = self.corner_dot_config["radius"]
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if mobject.get_depth() < 1e-2:
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vects = [DL, UL, UR, DR]
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else:
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vects = list(it.product(*3 * [[-1, 1]]))
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dots.add_updater(lambda d: d.set_points([
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mobject.get_corner(v) + v * radius
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for v in vects
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]))
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return dots
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def get_highlight(self, mobject: Mobject) -> Mobject:
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if isinstance(mobject, VMobject) and mobject.has_points() and not self.select_top_level_mobs:
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result = VHighlight(mobject)
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result.add_updater(lambda m: m.replace(mobject))
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return result
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else:
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return self.get_corner_dots(mobject)
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def refresh_selection_highlight(self):
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self.selection_highlight.set_submobjects([
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self.get_highlight(mob)
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for mob in self.selection
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])
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def add_to_selection(self, *mobjects):
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mobs = list(filter(
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lambda m: m not in self.unselectables and m not in self.selection,
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mobjects
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))
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if len(mobs) == 0:
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return
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self.selection.add(*mobs)
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self.selection_highlight.add(*map(self.get_highlight, mobs))
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for mob in mobs:
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mob.set_animating_status(True)
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self.refresh_static_mobjects()
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def toggle_from_selection(self, *mobjects):
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for mob in mobjects:
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if mob in self.selection:
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self.selection.remove(mob)
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mob.set_animating_status(False)
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else:
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self.add_to_selection(mob)
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self.refresh_selection_highlight()
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def clear_selection(self):
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for mob in self.selection:
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mob.set_animating_status(False)
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self.selection.set_submobjects([])
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self.selection_highlight.set_submobjects([])
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self.refresh_static_mobjects()
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def add(self, *new_mobjects: Mobject):
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super().add(*new_mobjects)
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self.regenerate_selection_search_set()
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def remove(self, *mobjects: Mobject):
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super().remove(*mobjects)
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self.regenerate_selection_search_set()
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def disable_interaction(self, *mobjects: Mobject):
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for mob in mobjects:
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self.unselectables.append(mob)
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self.regenerate_selection_search_set()
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def enable_interaction(self, *mobjects: Mobject):
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for mob in mobjects:
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if mob in self.unselectables:
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self.unselectables.remove(mob)
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# Functions for keyboard actions
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def copy_selection(self):
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ids = map(id, self.selection)
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pyperclip.copy(",".join(map(str, ids)))
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def paste_selection(self):
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clipboard_str = pyperclip.paste()
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# Try pasting a mobject
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try:
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ids = map(int, clipboard_str.split(","))
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mobs = map(self.id_to_mobject, ids)
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mob_copies = [m.copy() for m in mobs if m is not None]
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self.clear_selection()
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self.play(*(
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FadeIn(mc, run_time=0.5, scale=1.5)
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for mc in mob_copies
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))
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self.add_to_selection(*mob_copies)
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return
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except ValueError:
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pass
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# Otherwise, treat as tex or text
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if set("\\^=+").intersection(clipboard_str): # Proxy to text for LaTeX
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try:
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new_mob = Tex(clipboard_str)
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except LatexError:
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return
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else:
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new_mob = Text(clipboard_str)
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self.clear_selection()
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self.add(new_mob)
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self.add_to_selection(new_mob)
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def delete_selection(self):
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self.remove(*self.selection)
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self.clear_selection()
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def restore_state(self, mobject_states: list[tuple[Mobject, Mobject]]):
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super().restore_state(mobject_states)
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self.refresh_selection_highlight()
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def enable_selection(self):
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self.is_selecting = True
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self.add(self.selection_rectangle)
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self.selection_rectangle.fixed_corner = self.mouse_point.get_center().copy()
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def gather_new_selection(self):
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self.is_selecting = False
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self.remove(self.selection_rectangle)
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for mob in reversed(self.get_selection_search_set()):
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if self.selection_rectangle.is_touching(mob):
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self.add_to_selection(mob)
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def prepare_grab(self):
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mp = self.mouse_point.get_center()
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self.mouse_to_selection = mp - self.selection.get_center()
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self.is_grabbing = True
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def prepare_resizing(self, about_corner=False):
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center = self.selection.get_center()
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mp = self.mouse_point.get_center()
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if about_corner:
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self.scale_about_point = self.selection.get_corner(center - mp)
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else:
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self.scale_about_point = center
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self.scale_ref_vect = mp - self.scale_about_point
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self.scale_ref_width = self.selection.get_width()
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self.scale_ref_height = self.selection.get_height()
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def toggle_color_palette(self):
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if len(self.selection) == 0:
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return
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if self.color_palette not in self.mobjects:
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self.save_state()
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self.add(self.color_palette)
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else:
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self.remove(self.color_palette)
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def group_selection(self):
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group = self.get_group(*self.selection)
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self.add(group)
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self.clear_selection()
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self.add_to_selection(group)
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def ungroup_selection(self):
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pieces = []
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for mob in list(self.selection):
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self.remove(mob)
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pieces.extend(list(mob))
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self.clear_selection()
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self.add(*pieces)
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self.add_to_selection(*pieces)
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def nudge_selection(self, vect: np.ndarray, large: bool = False):
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nudge = self.selection_nudge_size
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if large:
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nudge *= 10
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self.selection.shift(nudge * vect)
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def save_selection_to_file(self):
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if len(self.selection) == 1:
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self.save_mobject_to_file(self.selection[0])
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else:
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self.save_mobject_to_file(self.selection)
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def on_key_press(self, symbol: int, modifiers: int) -> None:
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super().on_key_press(symbol, modifiers)
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char = chr(symbol)
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if char == SELECT_KEY and modifiers == 0:
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self.enable_selection()
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elif char in GRAB_KEYS and modifiers == 0:
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self.prepare_grab()
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elif char == RESIZE_KEY and modifiers in [0, SHIFT_MODIFIER]:
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self.prepare_resizing(about_corner=(modifiers == SHIFT_MODIFIER))
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elif symbol == SHIFT_SYMBOL:
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if self.window.is_key_pressed(ord("t")):
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self.prepare_resizing(about_corner=True)
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elif char == COLOR_KEY and modifiers == 0:
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self.toggle_color_palette()
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elif char == CURSOR_LOCATION_KEY and modifiers == 0:
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self.add(self.cursor_location_label)
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elif char == "c" and modifiers == COMMAND_MODIFIER:
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self.copy_selection()
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elif char == "v" and modifiers == COMMAND_MODIFIER:
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self.paste_selection()
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elif char == "x" and modifiers == COMMAND_MODIFIER:
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self.copy_selection()
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self.delete_selection()
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elif symbol == DELETE_SYMBOL:
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self.delete_selection()
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elif char == "a" and modifiers == COMMAND_MODIFIER:
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self.clear_selection()
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self.add_to_selection(*self.mobjects)
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elif char == "g" and modifiers == COMMAND_MODIFIER:
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self.group_selection()
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elif char == "g" and modifiers == COMMAND_MODIFIER | SHIFT_MODIFIER:
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self.ungroup_selection()
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elif char == "t" and modifiers == COMMAND_MODIFIER:
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self.toggle_selection_mode()
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elif char == "z" and modifiers == COMMAND_MODIFIER:
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self.undo()
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elif char == "z" and modifiers == COMMAND_MODIFIER | SHIFT_MODIFIER:
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self.redo()
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elif char == "s" and modifiers == COMMAND_MODIFIER:
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self.save_selection_to_file()
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elif symbol in ARROW_SYMBOLS:
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self.nudge_selection(
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vect=[LEFT, UP, RIGHT, DOWN][ARROW_SYMBOLS.index(symbol)],
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large=(modifiers & SHIFT_MODIFIER),
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)
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# Conditions for saving state
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if char in [GRAB_KEY, X_GRAB_KEY, Y_GRAB_KEY, RESIZE_KEY]:
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self.save_state()
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def on_key_release(self, symbol: int, modifiers: int) -> None:
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super().on_key_release(symbol, modifiers)
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if chr(symbol) == SELECT_KEY:
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self.gather_new_selection()
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if chr(symbol) in GRAB_KEYS:
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self.is_grabbing = False
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elif chr(symbol) == CURSOR_LOCATION_KEY:
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self.remove(self.cursor_location_label)
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elif symbol == SHIFT_SYMBOL and self.window.is_key_pressed(ord(RESIZE_KEY)):
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self.prepare_resizing(about_corner=False)
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# Mouse actions
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def handle_grabbing(self, point: np.ndarray):
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diff = point - self.mouse_to_selection
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if self.window.is_key_pressed(ord(GRAB_KEY)):
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self.selection.move_to(diff)
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elif self.window.is_key_pressed(ord(X_GRAB_KEY)):
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self.selection.set_x(diff[0])
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elif self.window.is_key_pressed(ord(Y_GRAB_KEY)):
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self.selection.set_y(diff[1])
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def handle_resizing(self, point: np.ndarray):
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vect = point - self.scale_about_point
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if self.window.is_key_pressed(CTRL_SYMBOL):
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for i in (0, 1):
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scalar = vect[i] / self.scale_ref_vect[i]
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self.selection.rescale_to_fit(
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scalar * [self.scale_ref_width, self.scale_ref_height][i],
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dim=i,
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about_point=self.scale_about_point,
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stretch=True,
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)
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else:
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scalar = get_norm(vect) / get_norm(self.scale_ref_vect)
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self.selection.set_width(
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scalar * self.scale_ref_width,
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about_point=self.scale_about_point
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)
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def handle_sweeping_selection(self, point: np.ndarray):
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mob = self.point_to_mobject(
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point, search_set=self.get_selection_search_set(),
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buff=SMALL_BUFF
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)
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if mob is not None:
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self.add_to_selection(mob)
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def choose_color(self, point: np.ndarray):
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# Search through all mobject on the screen, not just the palette
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to_search = [
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sm
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for mobject in self.mobjects
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for sm in mobject.family_members_with_points()
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if mobject not in self.unselectables
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]
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mob = self.point_to_mobject(point, to_search)
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if mob is not None:
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self.selection.set_color(mob.get_color())
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self.remove(self.color_palette)
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def toggle_clicked_mobject_from_selection(self, point: np.ndarray):
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mob = self.point_to_mobject(
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point,
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search_set=self.get_selection_search_set(),
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buff=SMALL_BUFF
|
|
)
|
|
if mob is not None:
|
|
self.toggle_from_selection(mob)
|
|
|
|
def on_mouse_motion(self, point: np.ndarray, d_point: np.ndarray) -> None:
|
|
super().on_mouse_motion(point, d_point)
|
|
if self.is_grabbing:
|
|
self.handle_grabbing(point)
|
|
elif self.window.is_key_pressed(ord(RESIZE_KEY)):
|
|
self.handle_resizing(point)
|
|
elif self.window.is_key_pressed(ord(SELECT_KEY)) and self.window.is_key_pressed(SHIFT_SYMBOL):
|
|
self.handle_sweeping_selection(point)
|
|
|
|
def on_mouse_release(self, point: np.ndarray, button: int, mods: int) -> None:
|
|
super().on_mouse_release(point, button, mods)
|
|
if self.color_palette in self.mobjects:
|
|
self.choose_color(point)
|
|
elif self.window.is_key_pressed(SHIFT_SYMBOL):
|
|
self.toggle_clicked_mobject_from_selection(point)
|
|
else:
|
|
self.clear_selection()
|