Animation Examples

from manimvtk import *

class TransformChain(Scene):
    def construct(self):
        # Start with a circle
        shapes = [
            Circle(color=BLUE),
            Square(color=GREEN),
            Triangle(color=RED),
            Star(color=YELLOW)
        ]
        
        current = shapes[0]
        self.play(Create(current))
        
        # Transform through each shape
        for next_shape in shapes[1:]:
            self.wait(0.5)
            self.play(Transform(current, next_shape))
        
        self.wait()

from manimvtk import *

class LaggedExample(Scene):
    def construct(self):
        squares = VGroup(*[
            Square(side_length=0.5).shift(RIGHT * i)
            for i in range(-3, 4)
        ])
        
        # Staggered creation
        self.play(
            LaggedStart(*[Create(s) for s in squares], lag_ratio=0.15)
        )
        self.wait()
        
        # Staggered color change
        self.play(
            LaggedStart(*[s.animate.set_color(RED) for s in squares], lag_ratio=0.1)
        )
        self.wait()

from manimvtk import *

class ValueTrackingExample(Scene):
    def construct(self):
        # Create a tracker
        tracker = ValueTracker(0)
        
        # Create object that follows tracker
        dot = Dot()
        dot.add_updater(lambda m: m.move_to([tracker.get_value(), 0, 0]))
        
        self.add(dot)
        
        # Animate tracker value
        self.play(tracker.animate.set_value(3), run_time=2)
        self.play(tracker.animate.set_value(-3), run_time=2)
        self.play(tracker.animate.set_value(0), run_time=1)