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5233c598ac* #added some examples to the camera scene * #added 3 ZoomedScene examples * #removed accidentally added files * #added updater examples * #added text examples * #renamed example * #added 3d example with other light source * #added imagemobject examples * # added one line of code * # small fix * # added 3d examples * # added one advanced project * fixed error * small changes * 3d render * another idea with the file 3d_fix.rst * # one more change * some more formula examples * fix indent * remove reference to examples/3d_fix * change default resolution for videos in doc to 480p30 * Apply suggestions leotrs Co-authored-by: Leo Torres <leo@leotrs.com> * Added credits and 3d scene changes * # removed unnecessary lines * # implemented lots of changes suggested be leotrs * # updated credits * # updated scene names * Update docs/source/examples/shapes.rst Co-authored-by: Leo Torres <leo@leotrs.com> * updated credits * updated examples entery * Update camera_settings.rst * changed two lines * Update shapes.rst * Update plots.rst Co-authored-by: Benjamin Hackl <devel@benjamin-hackl.at> Co-authored-by: Leo Torres <leo@leotrs.com>
91 lines
2.9 KiB
ReStructuredText
91 lines
2.9 KiB
ReStructuredText
Advanced Projects
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=================================
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.. manim:: ExampleSineCurve
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class ExampleSineCurve(Scene):
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# contributed by heejin_park, https://infograph.tistory.com/230
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def construct(self):
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self.show_axis()
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self.show_circle()
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self.move_dot_and_draw_curve()
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self.wait()
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def show_axis(self):
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x_start = np.array([-6,0,0])
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x_end = np.array([6,0,0])
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y_start = np.array([-4,-2,0])
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y_end = np.array([-4,2,0])
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x_axis = Line(x_start, x_end)
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y_axis = Line(y_start, y_end)
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self.add(x_axis, y_axis)
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self.add_x_labels()
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self.orgin_point = np.array([-4,0,0])
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self.curve_start = np.array([-3,0,0])
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def add_x_labels(self):
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x_labels = [
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TexMobject("\pi"), TexMobject("2 \pi"),
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TexMobject("3 \pi"), TexMobject("4 \pi"),
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]
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for i in range(len(x_labels)):
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x_labels[i].next_to(np.array([-1 + 2*i, 0, 0]), DOWN)
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self.add(x_labels[i])
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def show_circle(self):
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circle = Circle(radius=1)
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circle.move_to(self.orgin_point)
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self.add(circle)
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self.circle = circle
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def move_dot_and_draw_curve(self):
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orbit = self.circle
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orgin_point = self.orgin_point
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dot = Dot(radius=0.08, color=YELLOW)
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dot.move_to(orbit.point_from_proportion(0))
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self.t_offset = 0
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rate = 0.25
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def go_around_circle(mob, dt):
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self.t_offset += (dt * rate)
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# print(self.t_offset)
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mob.move_to(orbit.point_from_proportion(self.t_offset % 1))
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def get_line_to_circle():
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return Line(orgin_point, dot.get_center(), color=BLUE)
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def get_line_to_curve():
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x = self.curve_start[0] + self.t_offset * 4
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y = dot.get_center()[1]
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return Line(dot.get_center(), np.array([x,y,0]), color=YELLOW_A, stroke_width=2 )
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self.curve = VGroup()
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self.curve.add(Line(self.curve_start,self.curve_start))
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def get_curve():
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last_line = self.curve[-1]
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x = self.curve_start[0] + self.t_offset * 4
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y = dot.get_center()[1]
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new_line = Line(last_line.get_end(),np.array([x,y,0]), color=YELLOW_D)
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self.curve.add(new_line)
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return self.curve
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dot.add_updater(go_around_circle)
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origin_to_circle_line = always_redraw(get_line_to_circle)
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dot_to_curve_line = always_redraw(get_line_to_curve)
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sine_curve_line = always_redraw(get_curve)
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self.add(dot)
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self.add(orbit, origin_to_circle_line, dot_to_curve_line, sine_curve_line)
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self.wait(8.5)
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dot.remove_updater(go_around_circle)
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