Uebung 05

uebung_05/exercise_02/exercise_02.py

@@ -0,0 +1,51 @@
+import numpy as np
+
+class Ball:
+    __diameter__ = 0.0
+    
+    ## Methods
+    # Constructor
+    def __init__(self, diameter = 1.0):
+        self.__diameter__ = diameter
+        pass
+        
+    # a simple method
+    def introduction(self):
+        print(f"My diameter is {self.__diameter__:.3f}.")
+        pass
+
+    # Getter
+    def get_diameter(self):
+        return self.__diameter__
+
+    # overload __add_ (+)
+    def __add__(self, other):
+        d1 = self.get_diameter()
+
+        if(isinstance(other, Ball)):
+            d2 = other.get_diameter()
+            combined_volume = 1/6 * np.pi * (d1**3 + d2**3)
+        elif(isinstance(other, int) or isinstance(other, float)):
+            combined_volume = 1/6 * np.pi*d1**3 + other
+        else:
+            raise ValueError("Invalid summand.")
+        d_combined = np.power(6 * combined_volume / np.pi, 1/3)
+        return Ball(d_combined)
+        
+    # overload __radd__ (number + Ball)
+    def __radd__(self, other):
+        return self + other
+
+# main code
+a = Ball()
+b = Ball(2.0)
+
+c = a + b
+
+d = a + 5
+e = 5 + a
+
+a.introduction()
+b.introduction()
+c.introduction()
+d.introduction()