2021-01-01 20:10:38 -08:00
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from manim_imports_ext import *
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2021-01-01 14:48:59 -08:00
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class EarthMorph(Scene):
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CONFIG = {
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"camera_config": {
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"apply_depth_test": True,
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"samples": 8,
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}
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}
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def construct(self):
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torus1 = Torus(r1=1, r2=1)
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torus2 = Torus(r1=3, r2=1)
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sphere = Sphere(radius=3, resolution=torus1.resolution)
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earths = [
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TexturedSurface(surface, "EarthTextureMap", "NightEarthTextureMap")
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for surface in [sphere, torus1, torus2]
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]
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for mob in earths:
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mob.mesh = SurfaceMesh(mob)
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mob.mesh.set_stroke(BLUE, 1, opacity=0.5)
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earth = earths[0]
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self.camera.frame.set_rotation(
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theta=-30 * DEGREES,
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phi=70 * DEGREES,
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)
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self.add(earth)
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self.play(ShowCreation(earth.mesh, lag_ratio=0.01, run_time=3))
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for mob in earths:
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mob.add(mob.mesh)
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earth.save_state()
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self.play(Rotate(earth, PI / 2), run_time=2)
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for mob in earths[1:]:
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mob.rotate(PI / 2)
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self.play(
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Transform(earth, earths[1]),
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run_time=3
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)
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light = self.camera.light_source
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frame = self.camera.frame
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self.play(
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Transform(earth, earths[2]),
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frame.increment_phi, -10 * DEGREES,
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frame.increment_theta, -20 * DEGREES,
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run_time=3
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)
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frame.add_updater(lambda m, dt: m.increment_theta(-0.1 * dt))
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self.add(light)
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light.save_state()
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self.play(light.move_to, 3 * IN, run_time=5)
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self.play(light.shift, 10 * OUT, run_time=5)
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self.wait(4)
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