Fix bio domination bug.

test/lamp_shape_generation.py

@@ -20,8 +20,7 @@ def morph_shape(x, L, H, morph_type="linear"):
     elif morph_type == "hyperbolic_tan":
         y = np.tanh((x/L)*np.pi/2.0)
     elif morph_type == "circle":
-        y = np.tanh((x/L)*np.pi/2.0)          
-    
+        y = np.sqrt(L*L-np.power((L-x),2))         
     return y
 
 x_base = np.linspace(0, base_length, 10)
@@ -31,7 +30,7 @@ x_lamp = np.linspace(base_length, height, 100)
 y_lamp = base_radius + morph_shape(x_lamp-base_length,
                                    height-base_length,
                                    radius-base_radius,
-                                   "hyperbolic_tan")
+                                   "circle")
 x = np.append(x_base, x_lamp)
 y = np.append(y_base, y_lamp)
 plt.plot(x, y)