dimension() implemented in constraints

Author: alphaville

python/opengen/constraints/ball1.py

@@ -75,4 +75,6 @@ def is_compact(self):
         return True
 
     def dimension(self):
-        return super().dimension()
+        if self.center is None:
+            return None 
+        return len(self.center)

python/opengen/constraints/ball2.py

@@ -7,7 +7,7 @@
 class Ball2(Constraint):
     """A Euclidean ball constraint
 
-    A constraint of the form :math:`\|u-u_0\| \leq r`, where :math:`u_0` is the center
+    A constraint of the form :math:`\Vert u-u_0 \Vert \leq r`, where :math:`u_0` is the center
     of the ball and `r` is its radius
 
     """
@@ -93,4 +93,6 @@ def is_compact(self):
         return True
 
     def dimension(self):
-        return super().dimension()
+        if self.center is None:
+            return None 
+        return len(self.center)

python/opengen/constraints/ball_inf.py

@@ -90,4 +90,6 @@ def is_compact(self):
         return True
 
     def dimension(self):
-        return super().dimension()
+        if self.center is None:
+            return None 
+        return len(self.center)

python/opengen/constraints/cartesian.py

@@ -126,4 +126,4 @@ def is_compact(self):
         return True
 
     def dimension(self):
-        return super().dimension()
+        return self.segments[-1] + 1

python/opengen/constraints/no_constraints.py

@@ -23,4 +23,4 @@ def is_compact(self):
         return False
 
     def dimension(self):
-        return super().dimension()
+        return None

python/opengen/constraints/rectangle.py

@@ -31,7 +31,7 @@ def __check_xmin_xmax(cls, xmin, xmax):
                 if xmin_element > xmax_element:
                     raise Exception("xmin must be <= xmax")
 
-    def __init__(self, xmin, xmax):
+    def __init__(self, xmin=None, xmax=None):
         """Construct a new instance of Rectangle
 
         :param xmin: minimum bounds (can be ``None``)

python/opengen/constraints/simplex.py

@@ -105,4 +105,4 @@ def is_compact(self):
         return True
 
     def dimension(self):
-        return super().dimension()
+        return None

python/opengen/constraints/soc.py

@@ -87,4 +87,4 @@ def is_compact(self):
         return False
 
     def dimension(self):
-        return super().dimension()
+        return None

python/opengen/constraints/sphere2.py

@@ -75,3 +75,8 @@ def is_convex(self):
 
     def is_compact(self):
         return True
+
+    def dimension(self):
+        if self.center is None:
+            return None 
+        return len(self.center)

python/opengen/constraints/zero.py

@@ -7,15 +7,16 @@
 class Zero(Constraint):
     """A set that contains only the origin
 
-    The singleton :math:`\{0\}`
+    The singleton :math:`\\{0\\}`
 
     """
 
     def __init__(self):
         """
-        Constructor for set :math:`Z = \{0\}`
+        Constructor for set :math:`Z = \\{0\\}`
 
         """
+        pass
 
     def distance_squared(self, u):
         return fn.norm2_squared(u)
@@ -29,3 +30,5 @@ def is_convex(self):
     def is_compact(self):
         return True
 
+    def dimension(self):
+        return None