1 files changed, 81 insertions, 0 deletions
diff --git a/FSF-2020/calculus-of-several-variables/triple-and-surface-integrals/flux/file2_mobius_strip.py b/FSF-2020/calculus-of-several-variables/triple-and-surface-integrals/flux/file2_mobius_strip.py
new file mode 100644
index 0000000..31b1990
--- /dev/null
+++ b/FSF-2020/calculus-of-several-variables/triple-and-surface-integrals/flux/file2_mobius_strip.py
@@ -0,0 +1,81 @@
+from manimlib.imports import *
+
+class Mobius(ThreeDScene):
+	def construct(self):
+		axes=ThreeDAxes()
+
+
+
+		R=2.5
+
+
+		mobius = ParametricSurface(
+			lambda u, v: np.array([
+				(R+u*np.cos(v/2))*np.cos(v),
+				(R+u*np.cos(v/2))*np.sin( v),
+				u*np.sin(v/2)
+			]),
+			 u_min = -0.5, u_max = 0.5, v_min = 0, v_max = 2*PI, 
+
+			resolution=(6, 32)).fade(0.5) #Resolution of the surfaces
+		circle=Circle(radius=2.5, color=BLUE)
+
+
+
+		mobius.rotate(PI/2, axis=RIGHT)
+		mobius.rotate(PI/2, axis=OUT)
+		# # mobius.shift(RIGHT+OUT+DOWN)
+
+
+
+
+
+		along = ParametricSurface(
+			lambda u, v: np.array([
+				(R+u*np.cos(v/2))*np.cos(v),
+				(R+u*np.cos(v/2))*np.sin(v),
+				0
+			]),
+			 u_min = -0.5, u_max = 0.5, v_min = 0, v_max = 2*PI, 
+
+			resolution=(6, 32)).fade(0.5) #Resolution of the surfaces
+		circle=Circle(radius=2.5, color=BLUE)
+
+
+		
+
+		
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+		self.set_camera_orientation(phi=75 * DEGREES,theta=-75*DEGREES)
+		
+		self.play(Write(mobius))
+	
+		self.wait(1)
+		self.begin_ambient_camera_rotation(rate=0.65)
+
+		self.wait(10)
+		self.stop_ambient_camera_rotation() 
+		self.wait(1)
+
+
+
+		
+
+