Fix PVector.dot instance ethod.

Fixes jdf/Processing.py-Bugs#101

Author: Jonathan Feinberg

runtime/src/jycessing/core.py

@@ -109,8 +109,11 @@ def __instance_cross__(self, o):
     def __instance_dist__(self, o):
         return PVector.dist(self, o)
 
-    def __instance_dot__(self, o):
-        return PVector.dot(self, o)
+    def __instance_dot__(self, *args):
+        if len(args) == 1:
+            v = args[0]
+            return self.x * v.x + self.y * v.y + self.z * v.z
+        return self.x * args[0] + self.y * args[1] + self.z * args[2]
 
     def __init__(self, x=0, y=0, z=0):
         __pvector__.__init__(self, x, y, z)
@@ -120,6 +123,7 @@ def __init__(self, x=0, y=0, z=0):
         self.div = self.__instance_div__
         self.cross = self.__instance_cross__
         self.dist = self.__instance_dist__
+        self.dot = self.__instance_dot__
 
     def get(self):
         return PVector(self.x, self.y, self.z)

testing/resources/test_pvector.py

@@ -99,6 +99,14 @@
 # Regression test for https://github.com/jdf/Processing.py-Bugs/issues/67
 assert isinstance(PVector(1,2), PVector)
 
+# Regression test for https://github.com/jdf/Processing.py-Bugs/issues/101
+v = PVector(10, 20, 0)
+d = v.dot(60, 80, 0)
+assert d == 2200.0
+v2 = PVector(60, 80, 0)
+d = v.dot(v2)
+assert d == 2200.0
+
 print 'OK'
 
 exit()