Fix: NumberLine number_to_point broken when using add_tip

manim/mobject/geometry/arc.py

@@ -264,13 +264,13 @@ def get_last_handle(self) -> Point3D:
 
     def get_end(self) -> Point3D:
         if self.has_tip():
-            return self.tip.get_start()
+            return self.tip.base
         else:
             return super().get_end()
 
     def get_start(self) -> Point3D:
         if self.has_start_tip():
-            return self.start_tip.get_start()
+            return self.start_tip.base
         else:
             return super().get_start()
 

manim/mobject/graphing/number_line.py

@@ -2,6 +2,8 @@
 
 from __future__ import annotations
 
+from typing_extensions import Self
+
 from manim.mobject.mobject import Mobject
 from manim.mobject.opengl.opengl_vectorized_mobject import OpenGLVMobject
 
@@ -236,7 +238,6 @@ def __init__(
                 tip_width=self.tip_width,
                 tip_shape=tip_shape,
             )
-            self.tip.set_stroke(self.stroke_color, self.stroke_width)
 
         if self.include_ticks:
             self.add_ticks()
@@ -275,6 +276,26 @@ def rotate_about_number(
     ):
         return self.rotate(angle, axis, about_point=self.n2p(number), **kwargs)
 
+    def add_tip(
+        self,
+        tip: ArrowTip | None = None,
+        tip_shape: type[ArrowTip] | None = None,
+        tip_length: float | None = None,
+        tip_width: float | None = None,
+        at_start: bool = False,
+    ) -> Self:
+        if tip_length is None:
+            tip_length = self.tip_height
+
+        if tip_width is None:
+            tip_width = self.tip_width
+
+        super().add_tip(tip, tip_shape, tip_length, tip_width, at_start)
+
+        self.tip.set_stroke(self.stroke_color, self.stroke_width)
+
+        return self
+
     def add_ticks(self):
         """Adds ticks to the number line. Ticks can be accessed after creation
         via ``self.ticks``."""
@@ -325,8 +346,7 @@ def get_tick_range(self) -> np.ndarray:
             A numpy array of floats represnting values along the number line.
         """
         x_min, x_max, x_step = self.x_range
-        if not self.include_tip:
-            x_max += 1e-6
+        x_max += 1e-6
 
         # Handle cases where min and max are both positive or both negative
         if x_min < x_max < 0 or x_max > x_min > 0: