- 'matrix_basis' for objects and pose bones, this is an alternative access to directly adjusting the loc/scale/rot.

- pose bone 'matrix_local' wasn't well named since it didn't work like object or regular bones.
- pose bone matrix values for rna had array access rather then 4x4 matrix access.

 note: for pose bones update scripts by renaming 'matrix_local' --> 'matrix_basis'

release/scripts/op/nla.py

@@ -108,7 +108,7 @@ def bake(frame_start, frame_end, step=1, only_selected=False):
 
             #pbone.location = matrix.translation_part()
             #pbone.rotation_quaternion = matrix.to_quat()
-            pbone.matrix_local = [f for v in matrix for f in v]
+            pbone.matrix_basis = matrix
 
             pbone.keyframe_insert("location", -1, f, name)
 
@@ -149,7 +149,7 @@ class BakeAction(bpy.types.Operator):
 
     def execute(self, context):
 
-        action = bake(self.frame_start, self.frame_end, self.step, self.show_only_selected)
+        action = bake(self.frame_start, self.frame_end, self.step, self.only_selected)
 
         # basic cleanup, could move elsewhere
         for fcu in action.fcurves:

source/blender/makesrna/RNA_define.h

@@ -134,7 +134,7 @@ void RNA_def_property_flag(PropertyRNA *prop, int flag);
 void RNA_def_property_clear_flag(PropertyRNA *prop, int flag);
 void RNA_def_property_subtype(PropertyRNA *prop, PropertySubType subtype);
 void RNA_def_property_array(PropertyRNA *prop, int length);
-void RNA_def_property_multi_array(PropertyRNA *prop, int dimension, int length[]);
+void RNA_def_property_multi_array(PropertyRNA *prop, int dimension, const int length[]);
 void RNA_def_property_range(PropertyRNA *prop, double min, double max);
 
 void RNA_def_property_enum_items(PropertyRNA *prop, const EnumPropertyItem *item);

source/blender/makesrna/intern/rna_define.c

@@ -1026,6 +1026,12 @@ void RNA_def_property_array(PropertyRNA *prop, int length)
 		return;
 	}
 
+	if(prop->arraydimension > 1) {
+		fprintf(stderr, "RNA_def_property_array: \"%s.%s\", array dimensions has been set to %d but would be overwritten as 1.\n", srna->identifier, prop->identifier, prop->arraydimension);
+		DefRNA.error= 1;
+		return;
+	}
+
 	switch(prop->type) {
 		case PROP_BOOLEAN:
 		case PROP_INT:
@@ -1041,7 +1047,7 @@ void RNA_def_property_array(PropertyRNA *prop, int length)
 	}
 }
 
-void RNA_def_property_multi_array(PropertyRNA *prop, int dimension, int length[])
+void RNA_def_property_multi_array(PropertyRNA *prop, int dimension, const int length[])
 {
 	StructRNA *srna= DefRNA.laststruct;
 	int i;

source/blender/makesrna/intern/rna_mesh.c

@@ -1300,7 +1300,7 @@ static void rna_def_mtface(BlenderRNA *brna)
 		{TF_ALPHA, "ALPHA", 0, "Alpha", "Render polygon transparent, depending on alpha channel of the texture"},
 		{TF_CLIP, "CLIPALPHA", 0, "Clip Alpha", "Use the images alpha values clipped with no blending (binary alpha)"},
 		{0, NULL, 0, NULL, NULL}};
-	int uv_dim[]= {4, 2};
+	const int uv_dim[]= {4, 2};
 
 	srna= RNA_def_struct(brna, "MeshTextureFaceLayer", NULL);
 	RNA_def_struct_ui_text(srna, "Mesh Texture Face Layer", "Layer of texture faces in a Mesh datablock");

source/blender/makesrna/intern/rna_object.c

@@ -182,6 +182,18 @@ static void rna_Object_matrix_local_set(PointerRNA *ptr, const float values[16])
 	object_apply_mat4(ob, ob->obmat, FALSE, FALSE);
 }
 
+static void rna_Object_matrix_basis_get(PointerRNA *ptr, float values[16])
+{
+	Object *ob= ptr->id.data;
+	object_to_mat4(ob, (float(*)[4])values);
+}
+
+static void rna_Object_matrix_basis_set(PointerRNA *ptr, const float values[16])
+{
+	Object *ob= ptr->id.data;
+	object_apply_mat4(ob, (float(*)[4])values, FALSE, FALSE);
+}
+
 void rna_Object_internal_update_data(Main *bmain, Scene *scene, PointerRNA *ptr)
 {
 	DAG_id_flush_update(ptr->id.data, OB_RECALC_DATA);
@@ -1639,8 +1651,8 @@ static void rna_def_object(BlenderRNA *brna)
 	static float default_quat[4] = {1,0,0,0};	/* default quaternion values */
 	static float default_axisAngle[4] = {0,0,1,0};	/* default axis-angle rotation values */
 	static float default_scale[3] = {1,1,1}; /* default scale values */
-	int matrix_dimsize[]= {4, 4};
-	int boundbox_dimsize[]= {8, 3};
+	const int matrix_dimsize[]= {4, 4};
+	const int boundbox_dimsize[]= {8, 3};
 
 	srna= RNA_def_struct(brna, "Object", "ID");
 	RNA_def_struct_ui_text(srna, "Object", "Object datablock defining an object in a scene");
@@ -1886,6 +1898,12 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_float_funcs(prop, "rna_Object_matrix_local_get", "rna_Object_matrix_local_set", NULL);
 	RNA_def_property_update(prop, NC_OBJECT|ND_TRANSFORM, NULL);
 
+	prop= RNA_def_property(srna, "matrix_basis", PROP_FLOAT, PROP_MATRIX);
+	RNA_def_property_multi_array(prop, 2, matrix_dimsize);
+	RNA_def_property_ui_text(prop, "Input Matrix", "Matrix access to location, rotation and scale (including deltas), before constraints and parenting are applied.");
+	RNA_def_property_float_funcs(prop, "rna_Object_matrix_basis_get", "rna_Object_matrix_basis_set", NULL);
+	RNA_def_property_update(prop, NC_OBJECT|ND_TRANSFORM, "rna_Object_internal_update");
+	
 	/* collections */
 	prop= RNA_def_property(srna, "constraints", PROP_COLLECTION, PROP_NONE);
 	RNA_def_property_struct_type(prop, "Constraint");

source/blender/makesrna/intern/rna_object_force.c

@@ -1437,7 +1437,7 @@ static void rna_def_softbody(BlenderRNA *brna)
 {
 	StructRNA *srna;
 	PropertyRNA *prop;
-	int matrix_dimsize[]= {3, 3};
+	const int matrix_dimsize[]= {3, 3};
 
 	
 	static EnumPropertyItem collision_type_items[] = {

source/blender/makesrna/intern/rna_pose.c

@@ -541,13 +541,13 @@ PointerRNA rna_PoseBones_lookup_string(PointerRNA *ptr, const char *key)
 	return rptr;
 }
 
-static void rna_PoseChannel_matrix_local_get(PointerRNA *ptr, float *values)
+static void rna_PoseChannel_matrix_basis_get(PointerRNA *ptr, float *values)
 {
 	bPoseChannel *pchan= (bPoseChannel*)ptr->data;
 	pchan_to_mat4(pchan, (float (*)[4])values);
 }
 
-static void rna_PoseChannel_matrix_local_set(PointerRNA *ptr, const float *values)
+static void rna_PoseChannel_matrix_basis_set(PointerRNA *ptr, const float *values)
 {
 	bPoseChannel *pchan= (bPoseChannel*)ptr->data;
 	pchan_apply_mat4(pchan, (float (*)[4])values, FALSE); /* no compat for pradictable result */
@@ -683,6 +683,8 @@ static void rna_def_pose_channel(BlenderRNA *brna)
 	static float default_axisAngle[4] = {0,0,1,0};	/* default axis-angle rotation values */
 	static float default_scale[3] = {1,1,1}; /* default scale values */
 	
+	const int matrix_dimsize[]= {4, 4};
+	
 	StructRNA *srna;
 	PropertyRNA *prop;
 
@@ -784,18 +786,21 @@ static void rna_def_pose_channel(BlenderRNA *brna)
 	/* transform matrices - should be read-only since these are set directly by AnimSys evaluation */
 	prop= RNA_def_property(srna, "matrix_channel", PROP_FLOAT, PROP_MATRIX);
 	RNA_def_property_float_sdna(prop, NULL, "chan_mat");
-	RNA_def_property_array(prop, 16);
+	RNA_def_property_multi_array(prop, 2, matrix_dimsize);
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Channel Matrix", "4x4 matrix, before constraints");
 
-	prop= RNA_def_property(srna, "matrix_local", PROP_FLOAT, PROP_MATRIX);
-	RNA_def_property_array(prop, 16);
-	RNA_def_property_ui_text(prop, "Local Matrix", "Matrix representing the parent relative location, scale and rotation. Provides an alternative access to these properties.");
-	RNA_def_property_float_funcs(prop, "rna_PoseChannel_matrix_local_get", "rna_PoseChannel_matrix_local_set", NULL);
+	/* writable because it touches loc/scale/rot directly */
+	prop= RNA_def_property(srna, "matrix_basis", PROP_FLOAT, PROP_MATRIX);
+	RNA_def_property_multi_array(prop, 2, matrix_dimsize);
+	RNA_def_property_ui_text(prop, "Basis Matrix", "Provides an alternative access to loc/scale/rotation relative to the parent and own rest bone.");
+	RNA_def_property_float_funcs(prop, "rna_PoseChannel_matrix_basis_get", "rna_PoseChannel_matrix_basis_set", NULL);
+	RNA_def_property_update(prop, NC_OBJECT|ND_POSE, "rna_Pose_update");
 
+	/* final matrix */
 	prop= RNA_def_property(srna, "matrix", PROP_FLOAT, PROP_MATRIX);
 	RNA_def_property_float_sdna(prop, NULL, "pose_mat");
-	RNA_def_property_array(prop, 16);
+	RNA_def_property_multi_array(prop, 2, matrix_dimsize);
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE); 
 	RNA_def_property_ui_text(prop, "Pose Matrix", "Final 4x4 matrix for this channel");
 

source/blender/makesrna/intern/rna_scene.c

@@ -979,7 +979,7 @@ static void rna_def_transform_orientation(BlenderRNA *brna)
 	StructRNA *srna;
 	PropertyRNA *prop;
 
-	int matrix_dimsize[]= {3, 3};
+	const int matrix_dimsize[]= {3, 3};
 	
 	srna= RNA_def_struct(brna, "TransformOrientation", NULL);
 	

source/blender/makesrna/intern/rna_space.c

@@ -1003,7 +1003,7 @@ static void rna_def_space_view3d(BlenderRNA *brna)
 {
 	StructRNA *srna;
 	PropertyRNA *prop;
-	int matrix_dimsize[]= {4, 4};
+	const int matrix_dimsize[]= {4, 4};
 		
 	static EnumPropertyItem pivot_items[] = {
 		{V3D_CENTER, "BOUNDING_BOX_CENTER", ICON_ROTATE, "Bounding Box Center", ""},