Original Post
TransformMatrix[0][1]*v.co[0] alone gives 0.0 TransformMatrix[1][1]*v.co[1] alone gives 1.0 TransformMatrix[2][1]*v.co[2] alone gives 0.0 TransformMatrix[3][1] alone gives 0.0 and this line newVertexY=TransformMatrix[0][1]*v.co[0]+TransformMatrix[1][1]*v.co[1]*TransformMatrix[2][1]*v.co[2]+TransformMatrix[3][1]; gives 0.0 What do I do?