update constraint types to take point indexes

Connect.py

@@ -0,0 +1,9 @@
+
+from Constraint import Constraint
+
+class Connect(Constraint):
+    def __init__(self, shape1, pt1, shape2, pt2):
+        self.shape1 = shape1
+        self.pt1 = pt1
+        self.shape2 = shape2
+        self.pt2 = pt2

Distance.py

@@ -0,0 +1,11 @@
+
+from Constraint import Constraint
+
+class Distance(Constraint):
+    def __init__(self, shape1, pt1, shape2, pt2, direction, dist):
+        self.shape1 = shape1
+        self.pt1 = pt1
+        self.shape2 = shape2
+        self.pt2 = pt2
+        self.dist = dist
+        self.direction = direction

DistanceConstraint.py

@@ -1,10 +0,0 @@
-
-from Constraint import Constraint
-
-class DistanceConstraint(Constraint):
-    def __init__(self, shape1, attr1, shape2, attr2, dist):
-        self.shape1 = shape1
-        self.shape2 = shape2
-        self.attr1 = attr1
-        self.attr2 = attr2
-        self.dist = dist

Horizontal.py

@@ -2,5 +2,8 @@
 from Constraint import Constraint
 
 class Horizontal(Constraint):
-    def __init__(self, shape):
-        self.shape = shape
+    def __init__(self, shape1, pt1, shape2, pt2):
+        self.shape1 = shape1
+        self.pt1 = pt1
+        self.shape2 = shape2
+        self.pt2 = pt2

Vertical.py

@@ -2,5 +2,8 @@
 from Constraint import Constraint
 
 class Vertical(Constraint):
-    def __init__(self, shape):
-        self.shape = shape
+    def __init__(self, shape1, pt1, shape2, pt2):
+        self.shape1 = shape1
+        self.pt1 = pt1
+        self.shape2 = shape2
+        self.pt2 = pt2