Fix issue #4 and issue #3

Author: AlexMarinescu

.gitignore

@@ -8,3 +8,4 @@ build/
 
 .pypirc
 setup.sh
+setup.bat

gem/matrix.py

@@ -33,7 +33,7 @@ def matrix_vector_multiply(matrix, vec):
     crange = list(sm.range(matSize))
     for i in crange:
         for j in crange:
-            vecOut.vector[i] += vec.vector[j] * matrix[i][j]
+            vecOut.vector[j] += vec.vector[i] * matrix[i][j]
     return vecOut
 
 def matrix_div(mat, scalar):
@@ -491,11 +491,17 @@ def i_translate(self, vecA):
             raise TypeError('Expected Vector, got {}.'.format(type(vecA)))
 
         if self.size == 2:
-            transMatList = translate2(vecA.vector)
+            raise NotImplementedError('Matrix translate of size {} not available.'.format(self.size))
         elif self.size == 3:
-            transMatList = translate3(vecA.vector)
+            if vecA.size == 3:
+                transMatList = translate3(vecA.vector)
+            elif vecA.size == 2:
+                transMatList = translate2(vecA.vector)
         elif self.size == 4:
-            transMatList = translate4(vecA.vector)
+            if vecA.size == 3:
+                transMatList = translate3(vecA.vector)
+            elif vecA.size == 4:
+                transMatList = translate4(vecA.vector)
         else:
             raise NotImplementedError('Matrix translate of size {} not implemented.'.format(self.size))
         self *= Matrix(self.size, data=transMatList)
@@ -507,9 +513,12 @@ def translate(self, vecA):
             raise TypeError('Expected Vector, got {}.'.format(type(vecA)))
 
         if self.size == 2:
-            transMatList = translate2(vecA.vector)
+           raise NotImplementedError('Matrix translate of size {} not available.'.format(self.size))
         elif self.size == 3:
-            transMatList = translate3(vecA.vector)
+            if vecA.size == 3:
+                transMatList = translate3(vecA.vector)
+            elif vecA.size == 2:
+                transMatList = translate2(vecA.vector)
         elif self.size == 4:
             transMatList = translate4(vecA.vector)
         else:

gem/vector.py

@@ -3,7 +3,7 @@
 setup(
   name = 'gem',
   packages =['gem'],
-  version = 'v0.1.10',
+  version = 'v0.1.12',
   description = 'Math library for game programming in python. ',
   author = 'Alex Marinescu',
   author_email = 'ale632007@gmail.com',
@@ -32,4 +32,4 @@
             'Programming Language :: Python :: 3.5',
             'Programming Language :: Python :: Implementation',
             ],
-)
+)