Element Manipulation

The element manipulation functions of Scene object is to manipulation the Mobject objects of Scene object. The element manipulation functions are

• def bring_to_front(self, *mobjects)
• def bring_to_back(self, *mobjects)
• def update_mobjects(self, dt)
• def should_update_mobjects(self)
• def restructure_mobjects(self, to_remove, mobject_list_name="mobjects", extract_families=True)
• def capture_mobjects_in_camera(self, mobjects, **kwargs)
• def update_frame( self, mobjects=None, background=None, include_submobjects=True, ignore_skipping=True, **kwargs)
• def freeze_background(self)
• def clean_up_animations(self, *animations)

def bring_to_front(self, *mobjects)

Move one or more Mobject objects in the casting list of Scene object to the front of the casing list accordingly through add function with no modification on the priority casting list. Therefore those specified Mobjects, not in the priority casting list, are still placed behind Mobjects in the priority casting list.last updated 28Dec2019

Example Scene.bring_to_front

Example of Scene.bring_to_front.

Code Scene.bring_to_front

# folder/file: tut/manim_scene_bring_to_front_001a.py

from manimlib.scene.scene import Scene
from manimlib.mobject.geometry import Circle
from manimlib.mobject.geometry import Square

class manim_scene_bring_to_front_001a(Scene): 
    def construct(self): 
        temp=Square(fill_opacity=1)
        temp1=Circle(stroke_width=10)
        temp2=Square(color="#FFFF00",stroke_width=10,side_length=1.8)
        temp3=Circle(radius=1.2)
        self.add(temp)
        self.add_foreground_mobjects(temp1,temp2)
        self.add(temp3)
        self.bring_to_front(temp1,temp)

Output Scene.bring_to_front

def bring_to_back(self, *mobjects)

Move one or more Mobject objects in the casting list of Scene object through remove and reconstructed to the back of the casing list accordingly. Therefore all priority of these specified Mobjects are also removed from the priority casting list.last updated 28Dec2019

Example Scene.bring_to_back

Example of Scene.bring_to_back.

Code Scene.bring_to_back

# folder/file: tut/manim_scene_bring_to_back_001a.py

from manimlib.scene.scene import Scene
from manimlib.mobject.geometry import Circle
from manimlib.mobject.geometry import Square

class manim_scene_bring_to_back_001a(Scene): 
    def construct(self): 
        temp=Square(fill_opacity=1)
        temp1=Circle(stroke_width=10)
        temp2=Square(color="#FFFF00",stroke_width=10,side_length=1.8)
        temp3=Circle(radius=1.2)
        self.add(temp)
        self.add_foreground_mobjects(temp1,temp2)
        self.add(temp3)
        self.bring_to_back(temp3,temp2)

Output Scene.bring_to_back