===Python API===

Multiplication of 3D vectors by 4x4 matrices converts the vector to 4D but
did not make the vector homogenous.  Fixing that so the translation part of
the matrix will also be applied.

1 files changed, 4 insertions, 4 deletions

diff --git a/source/blender/python/api2_2x/Mathutils.c b/source/blender/python/api2_2x/Mathutils.c
index cb2337ce941..1c48d517fa0 100644
--- a/source/blender/python/api2_2x/Mathutils.c
+++ b/source/blender/python/api2_2x/Mathutils.c
@@ -138,9 +138,9 @@ PyObject *column_vector_multiplication(MatrixObject * mat, VectorObject* vec)
 	if(mat->rowSize != vec->size){
 		if(mat->rowSize == 4 && vec->size != 3){
 			return EXPP_ReturnPyObjError(PyExc_AttributeError,
-				"matrix * vector: matrix row size and vector size must be the same\n");
+				"matrix * vector: matrix row size and vector size must be the same");
 		}else{
-			vecCopy[3] = 0.0f;
+			vecCopy[3] = 1.0f;
 		}
 	}
 
@@ -202,9 +202,9 @@ PyObject *row_vector_multiplication(VectorObject* vec, MatrixObject * mat)
 	if(mat->colSize != vec->size){
 		if(mat->rowSize == 4 && vec->size != 3){
 			return EXPP_ReturnPyObjError(PyExc_AttributeError, 
-				"vector * matrix: matrix column size and the vector size must be the same\n");
+				"vector * matrix: matrix column size and the vector size must be the same");
 		}else{
-			vecCopy[3] = 0.0f;
+			vecCopy[3] = 1.0f;
 		}
 	}
 	size = vec->size;