From 5e49f20294bb9cb178cd1a37cf74c6c53eb45ef4 Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Thu, 14 Apr 2022 14:37:50 -0700
Subject: [PATCH] Add VMobject.get_highlight

---
 manimlib/mobject/types/vectorized_mobject.py | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/manimlib/mobject/types/vectorized_mobject.py b/manimlib/mobject/types/vectorized_mobject.py
index f5b47859..bc815fbb 100644
--- a/manimlib/mobject/types/vectorized_mobject.py
+++ b/manimlib/mobject/types/vectorized_mobject.py
@@ -349,6 +349,22 @@ class VMobject(Mobject):
     def get_joint_type(self) -> str:
         return self.joint_type
 
+    def get_highlight(
+        self,
+        stroke_color: Color = WHITE,
+        added_stroke: float = 3.0,
+        opacity: float = 0.75,
+    ) -> VMobject:
+        highlight = self.copy()
+        highlight.set_fill(opacity=0)
+        highlight.set_stroke(
+            color=stroke_color,
+            width=self.get_stroke_width() + added_stroke,
+            opacity=opacity
+        )
+        highlight.add_updater(lambda m: m.move_to(self))
+        return highlight
+
     # Points
     def set_anchors_and_handles(
         self,
@@ -681,7 +697,7 @@ class VMobject(Mobject):
             self.get_end_anchors(),
         ))))
 
-    def get_points_without_null_curves(self, atol: float=1e-9) -> np.ndarray:
+    def get_points_without_null_curves(self, atol: float = 1e-9) -> np.ndarray:
         nppc = self.n_points_per_curve
         points = self.get_points()
         distinct_curves = reduce(op.or_, [