Fixed clearing scales (after 3345d7e)

It was producing a bug with text rotation in elevation view
Added fix to make matrix normalization work for the cases when matrix is rotated and I've just found that mathutils.Matrix.normalize(d) is very conveniently ignoring 4th column (translation) (same for mathutils.Vector)

src/blenderbim/blenderbim/bim/module/drawing/decoration.py

@@ -525,10 +525,7 @@ class BaseDecorator:
             return matrix.inverted()[i].to_3d().normalized()
 
         text_dir_world_x_axis = get_basis_vector(obj.matrix_world)
-        camera_matrix = camera.matrix_world.copy()
-        camera_matrix[0][0] = 1
-        camera_matrix[1][1] = 1
-        camera_matrix[2][2] = 1
+        camera_matrix = camera.matrix_world.normalized()
         text_dir = (camera_matrix.inverted().to_quaternion() @ text_dir_world_x_axis).to_2d().normalized()
 
         pos = location_3d_to_region_2d(region, region3d, text_world_position)

src/blenderbim/blenderbim/bim/module/drawing/svgwriter.py

@@ -802,11 +802,7 @@ class SvgWriter:
         text_dir_world_x_axis = get_basis_vector(text_obj.matrix_world)
 
         # RCP cameras may be scaled, so reset scales.
-        camera_matrix = self.camera.matrix_world.copy()
-        camera_matrix[0][0] = 1
-        camera_matrix[1][1] = 1
-        camera_matrix[2][2] = 1
-
+        camera_matrix = self.camera.matrix_world.normalized()
         text_dir = (camera_matrix.inverted().to_quaternion() @ text_dir_world_x_axis).to_2d().normalized()
         angle = math.degrees(-text_dir.angle_signed(Vector((1, 0))))
 

src/blenderbim/blenderbim/tool/geometry.py

@@ -59,9 +59,7 @@ class Geometry(blenderbim.core.tool.Geometry):
         # Note that clearing scale has no impact on cameras.
         if (obj.scale - Vector((1.0, 1.0, 1.0))).length > 1e-4:
             if not obj.data:
-                obj.matrix_world[0][0] = 1
-                obj.matrix_world[1][1] = 1
-                obj.matrix_world[2][2] = 1
+                obj.matrix_world.normalize()
             elif obj.data.users == 1:
                 context_override = {}
                 context_override["object"] = context_override["active_object"] = obj