Simplify scatter generation (#326)

Author: stefmolin

src/data_morph/shapes/points/scatter.py

@@ -30,21 +30,16 @@ class Scatter(PointCollection):
 
     def __init__(self, dataset: Dataset) -> None:
         rng = np.random.default_rng(1)
-        center = (dataset.data.x.mean(), dataset.data.y.mean())
+        morph_range = dataset.morph_bounds.range
+        center = dataset.morph_bounds.center
         points = [center]
-        max_radius = max(dataset.data.x.std(), dataset.data.y.std())
         points.extend(
             [
                 (
-                    center[0]
-                    + np.cos(angle) * radius
-                    + rng.standard_normal() * max_radius,
-                    center[1]
-                    + np.sin(angle) * radius
-                    + rng.standard_normal() * max_radius,
+                    center[0] + np.cos(angle) * rng.uniform(0, morph_range[0] / 2),
+                    center[1] + np.sin(angle) * rng.uniform(0, morph_range[1] / 2),
                 )
-                for radius in np.linspace(max_radius // 5, max_radius, num=5)
-                for angle in np.linspace(0, 360, num=50, endpoint=False)
+                for angle in np.linspace(0, 720, num=100, endpoint=False)
             ]
         )
         super().__init__(*points)