1 files changed, 27 insertions, 0 deletions
diff --git a/FSF-2020/calculus-of-several-variables/div-curl-grad-and-all-that/Gradient/Gradient_file8_fluid-flow.py b/FSF-2020/calculus-of-several-variables/div-curl-grad-and-all-that/Gradient/Gradient_file8_fluid-flow.py
new file mode 100644
index 0000000..02a348d
--- /dev/null
+++ b/FSF-2020/calculus-of-several-variables/div-curl-grad-and-all-that/Gradient/Gradient_file8_fluid-flow.py
@@ -0,0 +1,27 @@
+from manimlib.imports import *
+
+
+def funk(x,y):
+	x,y = coordinate[:2]
+	return np.array([
+			np.sin(x)**np.cos(y),
+			np.sin(y)**np.cos(x),
+			0
+	])
+
+class Fluid(Scene):
+    def construct(self):
+        vf = VectorField(funk).fade(0.5)
+        self.add(vf)
+        self.wait()
+        lines = StreamLines(
+            funk,
+            virtual_time=3,
+            min_magnitude=0,
+            max_magnitude=2,
+        )
+        self.add(AnimatedStreamLines(
+            lines,
+            line_anim_class=ShowPassingFlashWithThinningStrokeWidth
+        ))
+        self.wait(3)