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from manimlib.imports import *
class SineVectors(GraphScene):
CONFIG = {
"x_min": 0,
"x_max": 10,
"y_min": -1,
"y_max": 1,
"graph_origin": ORIGIN+4*LEFT,
#"x_labeled_nums": list(range(-5, 6)),
#"y_labeled_nums": list(range(0, 5)),
}
def construct(self):
XTD = self.x_axis_width/(self.x_max - self.x_min)
YTD = self.y_axis_height/(self.y_max - self.y_min)
self.setup_axes(animate = True)
sine1 = self.get_graph(lambda x : np.sin(x), x_min = 0, x_max = 1.575, color = GREEN)
point1 = Dot().shift(self.graph_origin+1*YTD*UP + 1.575*XTD*RIGHT)
point1_lab = TextMobject(r"$t = (\frac{\pi}{2})$")
point1_lab.scale(0.7)
point1_lab.next_to(point1, UP)
vector1 = Arrow(self.graph_origin, self.graph_origin+1*YTD*UP + 1.575*XTD*RIGHT, buff=0.1, color = RED)
vector1_lab = TextMobject(r"$r(\frac{\pi}{2})$", color = RED)
vector1_lab.move_to(self.graph_origin+1.5*XTD*RIGHT+ 0.5*YTD*UP)
self.play(GrowArrow(vector1),Write(vector1_lab))
self.play(ShowCreation(point1), Write(point1_lab))
self.play(ShowCreation(sine1))
self.wait(1)
sine2 = self.get_graph(lambda x : np.sin(x), x_min = 1.575, x_max = 3.15, color = GREEN)
point2 = Dot().shift(self.graph_origin+3.15*XTD*RIGHT)
point2_lab = TextMobject(r"$t = (\pi)$")
point2_lab.scale(0.7)
point2_lab.next_to(point2, UP+RIGHT)
vector2 = Arrow(self.graph_origin, self.graph_origin+3.15*XTD*RIGHT, buff=0.1, color = BLUE)
vector2_lab = TextMobject(r"$r(\pi)$", color = BLUE)
vector2_lab.move_to(self.graph_origin+1.5*XTD*RIGHT+ 0.15*YTD*UP)
self.play(GrowArrow(vector2),Write(vector2_lab))
self.play(ShowCreation(point2), Write(point2_lab))
self.play(ShowCreation(sine2))
self.wait(1)
sine3 = self.get_graph(lambda x : np.sin(x), x_min = 3.15, x_max = 4.725, color = GREEN)
point3 = Dot().shift(self.graph_origin+1*YTD*DOWN + 4.725*XTD*RIGHT)
point3_lab = TextMobject(r"$t = (\frac{3\pi}{2})$")
point3_lab.scale(0.7)
point3_lab.next_to(point3, DOWN)
vector3 = Arrow(self.graph_origin, self.graph_origin+1*YTD*DOWN + 4.725*XTD*RIGHT, buff=0.1, color = YELLOW_C)
vector3_lab = TextMobject(r"$r(\frac{3\pi}{2})$", color = YELLOW_C)
vector3_lab.move_to(self.graph_origin+2*XTD*RIGHT+ 0.7*YTD*DOWN)
self.play(GrowArrow(vector3),Write(vector3_lab))
self.play(ShowCreation(point3), Write(point3_lab))
self.play(ShowCreation(sine3))
self.wait(1)
sine4 = self.get_graph(lambda x : np.sin(x), x_min = 4.725, x_max = 6.3, color = GREEN)
point4 = Dot().shift(self.graph_origin+6.3*XTD*RIGHT)
point4_lab = TextMobject(r"$t = (2\pi)$")
point4_lab.scale(0.7)
point4_lab.next_to(point4, UP+RIGHT)
vector4 = Arrow(self.graph_origin, self.graph_origin+6.3*XTD*RIGHT, buff=0.1, color = PURPLE)
vector4_lab = TextMobject(r"$r(2\pi)$", color = PURPLE)
vector4_lab.move_to(self.graph_origin+4.5*XTD*RIGHT+ 0.15*YTD*DOWN)
self.play(GrowArrow(vector4),Write(vector4_lab))
self.play(ShowCreation(point4), Write(point4_lab))
self.play(ShowCreation(sine4))
self.wait(3)
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