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docs/zh-Hant/api/presets/model/index.md

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+---
+title: mbcp.presets.model
+---
+### ***class*** `GeometricModels`
+
+### `@staticmethod`
+### *def* `sphere(radius: float, density: float)`
+
+
+生成球体上的点集。
+
+參數:
+
+- radius:   
+
+- density:   
+
+返回:
+
+- List[Point3]: 球体上的点集。
+
+
+
+<details>
+<summary>源碼</summary>
+
+```python
+@staticmethod
+def sphere(radius: float, density: float):
+    """
+        生成球体上的点集。
+        Args:
+            radius:
+            density:
+        Returns:
+            List[Point3]: 球体上的点集。
+        """
+    area = 4 * np.pi * radius ** 2
+    num = int(area * density)
+    phi_list = np.arccos([clamp(-1 + (2.0 * _ - 1.0) / num, -1, 1) for _ in range(num)])
+    theta_list = np.sqrt(num * np.pi) * phi_list
+    x_array = radius * np.sin(phi_list) * np.cos(theta_list)
+    y_array = radius * np.sin(phi_list) * np.sin(theta_list)
+    z_array = radius * np.cos(phi_list)
+    return [Point3(x_array[i], y_array[i], z_array[i]) for i in range(num)]
+```
+</details>
+