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I have the following (I'm new to Manim so sorry if this is a mess!): from manim import * import numpy as np class Example_1_1(ThreeDScene): # Parametric sphere def func(self, u, v): return np.array([np.sin(u) * np.cos(v), np.sin(u) * np.sin(v), np.cos(u)]) def construct(self): # Define axes axes = ThreeDAxes( x_range=[-2,2], x_length=4, y_range=[-2,2], y_length=4, z_range=[-2,2], z_length=4, x_axis_config = {'include_ticks':False, 'include_tip':False}, y_axis_config ={'include_ticks':False, 'include_tip':False}, z_axis_config ={'include_ticks':False, 'include_tip':False} ) z_line = Line3D(start=np.array([0,0,3]), end=np.array([0,0,-3]),color=YELLOW_A, thickness=0.005) # Define sphere surface = Surface( lambda u, v: axes.c2p(*self.func(u, v)), u_range=[0, np.pi], v_range=[0, 2*np.pi], resolution=30, fill_opacity=0.75, checkerboard_colors=False, fill_color=GRAY, stroke_opacity=0 ) # Set camera angle self.move_camera(phi=70 * DEGREES, theta=45 * DEGREES) # Define start point 1 start_point_1 = Dot3D(point=axes.coords_to_point(1,0,0), color=BLACK) # Define end point 1 end_point_1 = Dot3D(point=axes.coords_to_point(1,0,0), color=BLACK) # Define circle centre 1 circle_center_1 = Dot3D(point=axes.coords_to_point(0, 0, 0), fill_opacity = 0, stroke_opacity=0) # Add path for Transform 1 self.add( TracedPath( start_point_1.get_center, stroke_color=WHITE ) ) # Add Transform circle centre 1 self.add(circle_center_1) # Place z line in frame self.add(z_line) self.remove(z_line) # Add axes and sphere self.play(FadeIn(axes), Write(surface), run_time=0.5) self.wait() self.play(Indicate(z_line)) self.play(FadeOut(axes)) self.wait(2) # Play point 1 self.play(FadeIn(start_point_1)) self.wait(0.5) # Move point 1 self.play(Transform( start_point_1, end_point_1, path_func=utils.paths.path_along_circles(2*PI, circle_center_1.get_center()), run_time=3 ) ) self.wait(2) self.move_camera(phi=0 * DEGREES, theta=45 * DEGREES, run_time=2) self.wait(2)Which shows the point (1,0,0) rotating about the z-axis through 2pi leaving behind the circular path. I want to do this for multiple points on the sphere and I don't know where to even start! What I tried was to do exactly what I did for the point (1,0,0) and literally duplicate each line need for that part and change to values so it would do it for a different point. This did not work... it gave me a few points following small circular paths within the sphere. (责任编辑：) |