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Fix CoordinateSystem.get_area_under_graph

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Grant Sanderson
2025-09-22 13:04:14 -05:00
parent 91bbd5566d
commit 828cbec384
1 changed files with 8 additions and 4 deletions
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12
manimlib/mobject/coordinate_systems.py
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@@ -412,15 +412,19 @@ class CoordinateSystem(ABC):
rect.set_fill(negative_color)
return result
def get_area_under_graph(self, graph, x_range, fill_color=BLUE, fill_opacity=0.5):
if not hasattr(graph, "x_range"):
raise Exception("Argument `graph` must have attribute `x_range`")
def get_area_under_graph(self, graph, x_range=None, fill_color=BLUE, fill_opacity=0.5):
if x_range is None:
x_range = [
self.x_axis.p2n(graph.get_start()),
self.x_axis.p2n(graph.get_end()),
]
alpha_bounds = [
inverse_interpolate(*graph.x_range, x)
inverse_interpolate(*graph.x_range[:2], x)
for x in x_range
]
sub_graph = graph.copy()
sub_graph.clear_updaters()
sub_graph.pointwise_become_partial(graph, *alpha_bounds)
sub_graph.add_line_to(self.c2p(x_range[1], 0))
sub_graph.add_line_to(self.c2p(x_range[0], 0))