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57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
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from __future__ import absolute_import
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from constants import *
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from mobject.geometry import Rectangle
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from mobject.geometry import Line
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from mobject.types.vectorized_mobject import VGroup
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from utils.config_ops import digest_config
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from utils.color import Color
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class SurroundingRectangle(Rectangle):
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CONFIG = {
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"color" : YELLOW,
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"buff" : SMALL_BUFF,
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}
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def __init__(self, mobject, **kwargs):
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digest_config(self, kwargs)
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kwargs["width"] = mobject.get_width() + 2*self.buff
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kwargs["height"] = mobject.get_height() + 2*self.buff
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Rectangle.__init__(self, **kwargs)
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self.move_to(mobject)
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class BackgroundRectangle(SurroundingRectangle):
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CONFIG = {
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"color" : BLACK,
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"stroke_width" : 0,
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"fill_opacity" : 0.75,
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"buff" : 0
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}
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def __init__(self, mobject, **kwargs):
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SurroundingRectangle.__init__(self, mobject, **kwargs)
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self.original_fill_opacity = self.fill_opacity
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def pointwise_become_partial(self, mobject, a, b):
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self.set_fill(opacity = b*self.original_fill_opacity)
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return self
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def set_color(self):
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# Can't be changin' me!
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return self
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def get_fill_color(self):
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return Color(self.color)
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class Cross(VGroup):
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CONFIG = {
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"stroke_color" : RED,
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"stroke_width" : 6,
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}
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def __init__(self, mobject, **kwargs):
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VGroup.__init__(self,
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Line(UP+LEFT, DOWN+RIGHT),
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Line(UP+RIGHT, DOWN+LEFT),
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)
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self.replace(mobject, stretch = True)
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self.set_stroke(self.stroke_color, self.stroke_width)
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