switch to new baking method where we also add a rotating matrix

1 files changed, 456 insertions, 251 deletions

diff --git a/BakeVertexData.py b/BakeVertexData.py
index 7493aef..2e2554a 100644
--- a/BakeVertexData.py
+++ b/BakeVertexData.py
@@ -15,252 +15,6 @@ from bpy.props import BoolProperty, FloatProperty, IntProperty
 from bpy.types import Panel, Operator
 
 
-class MESH_OT_bake_vertex_vectors(Operator):
-    bl_idname = "mesh.bake_vertex_vectors"
-    bl_label = "Bake Vertex Vectors"
-    bl_description = "Bake selected vertices with automatic center and scale calculation"
-    bl_options = {'REGISTER', 'UNDO'}
-
-    contiguous_mode: BoolProperty(
-        name="Contiguous Groups",
-        description="Process each contiguous group of vertices separately with its own center and scale",
-        default=False
-    )
-
-    @classmethod
-    def poll(cls, context):
-        obj = context.active_object
-        return (obj is not None and
-                obj.type == 'MESH' and
-                context.mode == 'EDIT_MESH')
-
-    def get_vertex_islands(self, mesh, selected_indices):
-        """Find contiguous groups of vertices using edge connectivity"""
-        adjacency = {idx: set() for idx in selected_indices}
-
-        for edge in mesh.edges:
-            v0, v1 = edge.vertices
-            if v0 in selected_indices and v1 in selected_indices:
-                adjacency[v0].add(v1)
-                adjacency[v1].add(v0)
-
-        islands = []
-        visited = set()
-
-        for start_idx in selected_indices:
-            if start_idx in visited:
-                continue
-
-            island = set()
-            queue = [start_idx]
-
-            while queue:
-                current = queue.pop(0)
-                if current in visited:
-                    continue
-
-                visited.add(current)
-                island.add(current)
-
-                for neighbor in adjacency[current]:
-                    if neighbor not in visited:
-                        queue.append(neighbor)
-
-            islands.append(island)
-
-        return islands
-
-    def get_island_info(self, mesh, island_indices):
-        """Calculate center and scale for a single island"""
-        verts = []
-        for idx in island_indices:
-            verts.append(mesh.vertices[idx].co)
-
-        if not verts:
-            return None, None, None
-
-        center = mathutils.Vector((0, 0, 0))
-        for co in verts:
-            center += co
-        center /= len(verts)
-
-        max_dist = 0.0
-        for co in verts:
-            vec = co - center
-            max_component = max(abs(vec.x), abs(vec.y), abs(vec.z))
-            max_dist = max(max_dist, max_component)
-
-        if max_dist > 0:
-            scale = 1.0 / max_dist
-        else:
-            scale = 1.0
-
-        return center, max_dist, scale
-
-    def execute(self, context):
-        obj = context.active_object
-        mesh = obj.data
-
-        try:
-            bpy.ops.object.mode_set(mode='OBJECT')
-        except Exception as e:
-            self.report({'ERROR'}, f"Failed to switch to object mode: {str(e)}")
-            return {'CANCELLED'}
-
-        selected_indices = {v.index for v in mesh.vertices if v.select}
-
-        if not selected_indices:
-            self.report({'WARNING'}, "No vertices selected")
-            try:
-                bpy.ops.object.mode_set(mode='EDIT')
-            except:
-                pass
-            return {'CANCELLED'}
-
-        # Check if mesh has faces
-        if not mesh.polygons:
-            self.report({'ERROR'}, "Mesh has no faces. Vertex colors require faces to store data.")
-            try:
-                bpy.ops.object.mode_set(mode='EDIT')
-            except:
-                pass
-            return {'CANCELLED'}
-
-        if not mesh.vertex_colors:
-            mesh.vertex_colors.new(name="BakedVectors")
-
-        color_layer = mesh.vertex_colors.active
-        if not color_layer:
-            self.report({'ERROR'}, "Failed to create vertex color layer")
-            try:
-                bpy.ops.object.mode_set(mode='EDIT')
-            except:
-                pass
-            return {'CANCELLED'}
-
-        source_matrix = obj.matrix_world
-
-        if self.contiguous_mode:
-            # Build vertex to polygon mapping for efficiency
-            vertex_to_polys = {}
-            for poly_idx, poly in enumerate(mesh.polygons):
-                for vertex_idx in poly.vertices:
-                    if vertex_idx in selected_indices:
-                        if vertex_idx not in vertex_to_polys:
-                            vertex_to_polys[vertex_idx] = []
-                        vertex_to_polys[vertex_idx].append(poly_idx)
-
-            islands = self.get_vertex_islands(mesh, selected_indices)
-            total_updated = 0
-
-            for island_indices in islands:
-                center, max_dist, scale = self.get_island_info(mesh, island_indices)
-                if center is None:
-                    continue
-
-                center_world = source_matrix @ center
-
-                # Collect all polygons that contain vertices from this island
-                relevant_polys = set()
-                for vertex_idx in island_indices:
-                    if vertex_idx in vertex_to_polys:
-                        relevant_polys.update(vertex_to_polys[vertex_idx])
-
-                # Only process relevant polygons
-                for poly_idx in relevant_polys:
-                    poly = mesh.polygons[poly_idx]
-                    for loop_idx in poly.loop_indices:
-                        vertex_idx = mesh.loops[loop_idx].vertex_index
-
-                        if vertex_idx in island_indices:
-                            vertex = mesh.vertices[vertex_idx]
-
-                            vertex_world = source_matrix @ vertex.co
-                            vector_world = center_world - vertex_world
-                            vector_object = source_matrix.inverted_safe().to_3x3() @ vector_world
-                            vector_scaled = vector_object * scale
-
-                            color = mathutils.Vector((
-                                (vector_scaled.x + 1.0) * 0.5,
-                                (vector_scaled.y + 1.0) * 0.5,
-                                (vector_scaled.z + 1.0) * 0.5,
-                                scale
-                            ))
-
-                            color_layer.data[loop_idx].color = color
-                            total_updated += 1
-
-            mesh.update()
-
-            try:
-                bpy.ops.object.mode_set(mode='EDIT')
-            except Exception as e:
-                self.report({'WARNING'}, f"Could not return to edit mode: {str(e)}")
-
-            self.report({'INFO'}, f"Baked {len(islands)} contiguous groups ({len(selected_indices)} vertices)")
-            return {'FINISHED'}
-
-        else:
-            verts = []
-            for idx in selected_indices:
-                verts.append(mesh.vertices[idx].co)
-
-            center = mathutils.Vector((0, 0, 0))
-            for co in verts:
-                center += co
-            center /= len(verts)
-
-            max_dist = 0.0
-            for co in verts:
-                vec = co - center
-                max_component = max(abs(vec.x), abs(vec.y), abs(vec.z))
-                max_dist = max(max_dist, max_component)
-
-            if max_dist > 0:
-                scale = 1.0 / max_dist
-            else:
-                scale = 1.0
-
-            center_world = source_matrix @ center
-
-            updated_count = 0
-            for poly in mesh.polygons:
-                for loop_idx in poly.loop_indices:
-                    vertex_idx = mesh.loops[loop_idx].vertex_index
-
-                    if vertex_idx in selected_indices:
-                        vertex = mesh.vertices[vertex_idx]
-
-                        vertex_world = source_matrix @ vertex.co
-                        vector_world = center_world - vertex_world
-                        vector_object = source_matrix.inverted_safe().to_3x3() @ vector_world
-                        vector_scaled = vector_object * scale
-
-                        color = mathutils.Vector((
-                            (vector_scaled.x + 1.0) * 0.5,
-                            (vector_scaled.y + 1.0) * 0.5,
-                            (vector_scaled.z + 1.0) * 0.5,
-                            scale
-                        ))
-
-                        color_layer.data[loop_idx].color = color
-                        updated_count += 1
-
-            mesh.update()
-
-            try:
-                bpy.ops.object.mode_set(mode='EDIT')
-            except Exception as e:
-                self.report({'WARNING'}, f"Could not return to edit mode: {str(e)}")
-
-            self.report({'INFO'}, f"Baked {len(selected_indices)} vertices with scale {scale:.3f}")
-            return {'FINISHED'}
-
-    def draw(self, context):
-        layout = self.layout
-        layout.prop(self, "contiguous_mode")
-
-
 class MESH_OT_select_all_linked_submeshes(Operator):
     bl_idname = "mesh.select_all_linked_submeshes"
     bl_label = "Select All Linked Submeshes"
@@ -357,6 +111,10 @@ class MESH_OT_select_all_linked_submeshes(Operator):
         self.report({'INFO'}, f"Expanded selection in {affected_islands} submeshes ({expanded_count} new vertices)")
         return {'FINISHED'}
 
+    def draw(self, context):
+        layout = self.layout
+        layout.prop(self, "contiguous_mode")
+
 
 class MESH_OT_select_linked_across_boundaries(Operator):
     bl_idname = "mesh.select_linked_across_boundaries"
@@ -1320,7 +1078,7 @@ class MESH_OT_merge_by_distance_in_submeshes(Operator):
             queue = deque([start_idx])
 
             while queue:
-                current = queue.popleft()
+                current = queue.pop(0)
                 if current in visited:
                     continue
 
@@ -1448,6 +1206,449 @@ class MESH_OT_merge_by_distance_in_submeshes(Operator):
         layout.label(text="Merges within submeshes only", icon='INFO')
 
 
+class MESH_OT_bake_vertex_and_rotation_combined(Operator):
+    bl_idname = "mesh.bake_vertex_and_rotation_combined"
+    bl_label = "Bake Vectors & Rotation Combined"
+    bl_description = "Bake vertex vectors relative to orthonormal basis and orientation quaternions in one operation"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    contiguous_mode: BoolProperty(
+        name="Contiguous Groups",
+        description="Process each contiguous group of vertices separately with its own center and scale",
+        default=False
+    )
+
+    normal_epsilon: FloatProperty(
+        name="Normal Epsilon",
+        description="Minimum angle difference (radians) between normals to consider them unique",
+        default=0.1,
+        min=0.01,
+        max=1.0,
+        precision=3
+    )
+
+    @classmethod
+    def poll(cls, context):
+        obj = context.active_object
+        return (obj is not None and
+                obj.type == 'MESH' and
+                context.mode == 'EDIT_MESH')
+
+    def get_vertex_islands(self, mesh, selected_indices):
+        """Find contiguous groups of vertices using edge connectivity"""
+        adjacency = {idx: set() for idx in selected_indices}
+
+        for edge in mesh.edges:
+            v0, v1 = edge.vertices
+            if v0 in selected_indices and v1 in selected_indices:
+                adjacency[v0].add(v1)
+                adjacency[v1].add(v0)
+
+        islands = []
+        visited = set()
+
+        for start_idx in selected_indices:
+            if start_idx in visited:
+                continue
+
+            island = set()
+            queue = [start_idx]
+
+            while queue:
+                current = queue.pop(0)
+                if current in visited:
+                    continue
+
+                visited.add(current)
+                island.add(current)
+
+                for neighbor in adjacency[current]:
+                    if neighbor not in visited:
+                        queue.append(neighbor)
+
+            islands.append(island)
+
+        return islands
+
+    def get_submesh_faces_and_normals(self, mesh, island_indices):
+        """Get all faces and their normals for vertices in the island"""
+        faces_data = []
+
+        # Build vertex to faces mapping for efficiency
+        vertex_to_faces = {}
+        for face_idx, face in enumerate(mesh.polygons):
+            for vertex_idx in face.vertices:
+                if vertex_idx in island_indices:
+                    if vertex_idx not in vertex_to_faces:
+                        vertex_to_faces[vertex_idx] = []
+                    vertex_to_faces[vertex_idx].append(face_idx)
+
+        # Collect unique faces that belong to this island
+        island_faces = set()
+        for vertex_idx in island_indices:
+            if vertex_idx in vertex_to_faces:
+                for face_idx in vertex_to_faces[vertex_idx]:
+                    face = mesh.polygons[face_idx]
+                    # Check if all vertices of this face are in the island
+                    if all(v in island_indices for v in face.vertices):
+                        island_faces.add(face_idx)
+
+        # Calculate face data
+        for face_idx in island_faces:
+            face = mesh.polygons[face_idx]
+            faces_data.append({
+                'normal': face.normal.copy(),
+                'area': face.area,
+                'index': face_idx
+            })
+
+        return faces_data
+
+    def build_orthonormal_basis_from_faces(self, faces_data, epsilon):
+        """Build orthonormal basis from face normals"""
+        if not faces_data:
+            # Default to standard basis if no faces
+            return mathutils.Matrix.Identity(3)
+
+        # Sort faces by area (largest first)
+        faces_data.sort(key=lambda x: x['area'], reverse=True)
+
+        # Find up to 3 non-parallel normals
+        basis_normals = []
+        epsilon_cos = math.cos(epsilon)
+
+        for face_data in faces_data:
+            normal = face_data['normal'].normalized()
+
+            # Check if this normal is sufficiently different from existing ones
+            is_unique = True
+            for existing_normal in basis_normals:
+                dot_product = abs(normal.dot(existing_normal))
+                if dot_product > epsilon_cos:
+                    is_unique = False
+                    break
+
+            if is_unique:
+                basis_normals.append(normal)
+                if len(basis_normals) >= 3:
+                    break
+
+        # Build orthonormal basis
+        if len(basis_normals) == 0:
+            # No faces, use default
+            return mathutils.Matrix.Identity(3)
+
+        # First basis vector is the largest face normal
+        x_axis = basis_normals[0].normalized()
+
+        if len(basis_normals) >= 2:
+            # Use second normal to define y-axis
+            y_candidate = basis_normals[1]
+            # Make it orthogonal to x
+            y_axis = (y_candidate - y_candidate.project(x_axis)).normalized()
+
+            # If y_axis is too small (normals were almost parallel), find a different vector
+            if y_axis.length < 0.1:
+                # Create arbitrary perpendicular vector
+                if abs(x_axis.z) < 0.9:
+                    y_axis = mathutils.Vector((0, 0, 1)).cross(x_axis).normalized()
+                else:
+                    y_axis = mathutils.Vector((1, 0, 0)).cross(x_axis).normalized()
+        else:
+            # Only one unique normal, create arbitrary perpendicular
+            if abs(x_axis.z) < 0.9:
+                y_axis = mathutils.Vector((0, 0, 1)).cross(x_axis).normalized()
+            else:
+                y_axis = mathutils.Vector((1, 0, 0)).cross(x_axis).normalized()
+
+        # Third axis from cross product
+        z_axis = x_axis.cross(y_axis).normalized()
+
+        # Build rotation matrix (columns are the basis vectors)
+        matrix = mathutils.Matrix((
+            (x_axis.x, y_axis.x, z_axis.x),
+            (x_axis.y, y_axis.y, z_axis.y),
+            (x_axis.z, y_axis.z, z_axis.z)
+        ))
+
+        # Ensure right-handed coordinate system
+        if matrix.determinant() < 0:
+            z_axis = -z_axis
+            matrix = mathutils.Matrix((
+                (x_axis.x, y_axis.x, z_axis.x),
+                (x_axis.y, y_axis.y, z_axis.y),
+                (x_axis.z, y_axis.z, z_axis.z)
+            ))
+
+        return matrix
+
+    def get_island_info(self, mesh, island_indices):
+        """Calculate center and scale for a single island"""
+        verts = []
+        for idx in island_indices:
+            verts.append(mesh.vertices[idx].co)
+
+        if not verts:
+            return None, None, None
+
+        center = mathutils.Vector((0, 0, 0))
+        for co in verts:
+            center += co
+        center /= len(verts)
+
+        max_dist = 0.0
+        for co in verts:
+            vec = co - center
+            max_component = max(abs(vec.x), abs(vec.y), abs(vec.z))
+            max_dist = max(max_dist, max_component)
+
+        if max_dist > 0:
+            scale = 1.0 / max_dist
+        else:
+            scale = 1.0
+
+        return center, max_dist, scale
+
+    def execute(self, context):
+        obj = context.active_object
+        mesh = obj.data
+
+        try:
+            bpy.ops.object.mode_set(mode='OBJECT')
+        except Exception as e:
+            self.report({'ERROR'}, f"Failed to switch to object mode: {str(e)}")
+            return {'CANCELLED'}
+
+        selected_indices = {v.index for v in mesh.vertices if v.select}
+
+        if not selected_indices:
+            self.report({'WARNING'}, "No vertices selected")
+            try:
+                bpy.ops.object.mode_set(mode='EDIT')
+            except:
+                pass
+            return {'CANCELLED'}
+
+        # Check if mesh has faces
+        if not mesh.polygons:
+            self.report({'ERROR'}, "Mesh has no faces. Both vertex colors and quaternion baking require faces.")
+            try:
+                bpy.ops.object.mode_set(mode='EDIT')
+            except:
+                pass
+            return {'CANCELLED'}
+
+        # Create vertex color layer
+        if not mesh.vertex_colors:
+            mesh.vertex_colors.new(name="BakedVectors")
+        color_layer = mesh.vertex_colors.active
+        if not color_layer:
+            self.report({'ERROR'}, "Failed to create vertex color layer")
+            try:
+                bpy.ops.object.mode_set(mode='EDIT')
+            except:
+                pass
+            return {'CANCELLED'}
+
+        # Remove existing UV maps and create new ones for quaternions
+        uv_names = ["BakedOriginAngle0", "BakedOriginAngle1"]
+        for uv_name in uv_names:
+            if uv_name in mesh.uv_layers:
+                mesh.uv_layers.remove(mesh.uv_layers[uv_name])
+
+        uv_layer0 = mesh.uv_layers.new(name="BakedOriginAngle0")
+        uv_layer1 = mesh.uv_layers.new(name="BakedOriginAngle1")
+
+        if not uv_layer0 or not uv_layer1:
+            self.report({'ERROR'}, "Failed to create UV layers")
+            try:
+                bpy.ops.object.mode_set(mode='EDIT')
+            except:
+                pass
+            return {'CANCELLED'}
+
+        source_matrix = obj.matrix_world
+
+        if self.contiguous_mode:
+            # Build vertex to polygon mapping for efficiency
+            vertex_to_polys = {}
+            for poly_idx, poly in enumerate(mesh.polygons):
+                for vertex_idx in poly.vertices:
+                    if vertex_idx in selected_indices:
+                        if vertex_idx not in vertex_to_polys:
+                            vertex_to_polys[vertex_idx] = []
+                        vertex_to_polys[vertex_idx].append(poly_idx)
+
+            islands = self.get_vertex_islands(mesh, selected_indices)
+            total_updated = 0
+
+            # Process each island separately
+            for island_indices in islands:
+                # Get vector data for this island
+                center, max_dist, scale = self.get_island_info(mesh, island_indices)
+                if center is None:
+                    continue
+
+                # Get face data and build orthonormal basis for this island
+                faces_data = self.get_submesh_faces_and_normals(mesh, island_indices)
+                basis_matrix = self.build_orthonormal_basis_from_faces(faces_data, self.normal_epsilon)
+                
+                # Convert basis to quaternion
+                quaternion = basis_matrix.to_quaternion()
+                quaternion.normalize()
+
+                if quaternion.w < 0:
+                    quaternion.negate()
+
+                center_world = source_matrix @ center
+
+                # Collect all polygons that contain vertices from this island
+                relevant_polys = set()
+                for vertex_idx in island_indices:
+                    if vertex_idx in vertex_to_polys:
+                        relevant_polys.update(vertex_to_polys[vertex_idx])
+
+                # Only process relevant polygons
+                for poly_idx in relevant_polys:
+                    poly = mesh.polygons[poly_idx]
+                    for loop_idx in poly.loop_indices:
+                        vertex_idx = mesh.loops[loop_idx].vertex_index
+
+                        if vertex_idx in island_indices:
+                            vertex = mesh.vertices[vertex_idx]
+
+                            # Calculate vector from vertex to center in world space
+                            vertex_world = source_matrix @ vertex.co
+                            vector_world = vertex_world - center_world
+                            
+                            # Transform to object space
+                            vector_object = source_matrix.inverted_safe().to_3x3() @ vector_world
+                            
+                            # Transform vector to local orthonormal basis coordinates
+                            # Use transpose of basis matrix to transform from object to local
+                            vector_local = basis_matrix.transposed() @ vector_object
+                            
+                            # Apply scale
+                            vector_scaled = vector_local * scale
+
+                            # Store transformed vector in vertex colors
+                            color = mathutils.Vector((
+                                (vector_scaled.x + 1.0) * 0.5,
+                                (vector_scaled.y + 1.0) * 0.5,
+                                (vector_scaled.z + 1.0) * 0.5,
+                                scale
+                            ))
+                            color_layer.data[loop_idx].color = color
+
+                            # Store quaternion in UV coordinates
+                            uv_layer0.data[loop_idx].uv = mathutils.Vector((quaternion.x, quaternion.y))
+                            uv_layer1.data[loop_idx].uv = mathutils.Vector((quaternion.z, quaternion.w))
+                            
+                            total_updated += 1
+
+            mesh.update()
+
+            try:
+                bpy.ops.object.mode_set(mode='EDIT')
+            except Exception as e:
+                self.report({'WARNING'}, f"Could not return to edit mode: {str(e)}")
+
+            self.report({'INFO'}, f"Baked vectors & quaternions for {len(islands)} contiguous groups ({len(selected_indices)} vertices)")
+            return {'FINISHED'}
+
+        else:
+            # Single group mode - process all selected vertices as one group
+            
+            # Get vector data
+            verts = []
+            for idx in selected_indices:
+                verts.append(mesh.vertices[idx].co)
+
+            center = mathutils.Vector((0, 0, 0))
+            for co in verts:
+                center += co
+            center /= len(verts)
+
+            max_dist = 0.0
+            for co in verts:
+                vec = co - center
+                max_component = max(abs(vec.x), abs(vec.y), abs(vec.z))
+                max_dist = max(max_dist, max_component)
+
+            if max_dist > 0:
+                scale = 1.0 / max_dist
+            else:
+                scale = 1.0
+
+            # Get face data and build orthonormal basis for all selected vertices
+            faces_data = self.get_submesh_faces_and_normals(mesh, selected_indices)
+            basis_matrix = self.build_orthonormal_basis_from_faces(faces_data, self.normal_epsilon)
+            
+            # Convert basis to quaternion
+            quaternion = basis_matrix.to_quaternion()
+            quaternion.normalize()
+
+            if quaternion.w < 0:
+                quaternion.negate()
+
+            center_world = source_matrix @ center
+
+            updated_count = 0
+            for poly in mesh.polygons:
+                for loop_idx in poly.loop_indices:
+                    vertex_idx = mesh.loops[loop_idx].vertex_index
+
+                    if vertex_idx in selected_indices:
+                        vertex = mesh.vertices[vertex_idx]
+
+                        # Calculate vector from vertex to center in world space
+                        vertex_world = source_matrix @ vertex.co
+                        vector_world = vertex_world - center_world
+                        
+                        # Transform to object space
+                        vector_object = source_matrix.inverted_safe().to_3x3() @ vector_world
+                        
+                        # Transform vector to local orthonormal basis coordinates
+                        vector_local = basis_matrix.transposed() @ vector_object
+                        
+                        # Apply scale
+                        vector_scaled = vector_local * scale
+
+                        # Store transformed vector in vertex colors
+                        color = mathutils.Vector((
+                            (vector_scaled.x + 1.0) * 0.5,
+                            (vector_scaled.y + 1.0) * 0.5,
+                            (vector_scaled.z + 1.0) * 0.5,
+                            scale
+                        ))
+                        color_layer.data[loop_idx].color = color
+
+                        # Store quaternion in UV coordinates
+                        uv_layer0.data[loop_idx].uv = mathutils.Vector((quaternion.x, quaternion.y))
+                        uv_layer1.data[loop_idx].uv = mathutils.Vector((quaternion.z, quaternion.w))
+                        
+                        updated_count += 1
+
+            mesh.update()
+
+            try:
+                bpy.ops.object.mode_set(mode='EDIT')
+            except Exception as e:
+                self.report({'WARNING'}, f"Could not return to edit mode: {str(e)}")
+
+            self.report({'INFO'}, f"Baked vectors & quaternion for {len(selected_indices)} vertices with scale {scale:.3f}")
+            return {'FINISHED'}
+
+    def draw(self, context):
+        layout = self.layout
+        layout.prop(self, "contiguous_mode")
+        layout.prop(self, "normal_epsilon")
+        layout.label(text="Vectors relative to orthonormal basis", icon='INFO')
+        layout.label(text="Stores quaternion in UV maps:", icon='INFO')
+        layout.label(text="  BakedOriginAngle0: X, Y components")
+        layout.label(text="  BakedOriginAngle1: Z, W components")
+
+
 class MESH_PT_bake_vertex_panel(Panel):
     bl_label = "Bake Vertex Vectors"
     bl_idname = "MESH_PT_bake_vertex_vectors"
@@ -1469,7 +1670,9 @@ class MESH_PT_bake_vertex_panel(Panel):
                 col.operator("mesh.merge_by_distance_in_submeshes", icon='AUTOMERGE_ON')
                 col.operator("mesh.pack_uv_islands_by_submesh", icon='UV')
                 col.separator()
-                col.operator("mesh.bake_vertex_vectors", icon='EXPORT')
+                
+                # Combined operator
+                col.operator("mesh.bake_vertex_and_rotation_combined", icon='EXPORT', text="Bake Vectors & Rotation")
 
                 box = col.box()
                 box.label(text="Info:", icon='INFO')
@@ -1478,8 +1681,10 @@ class MESH_PT_bake_vertex_panel(Panel):
                 box.label(text="Deduplicate: Remove duplicate selected submeshes")
                 box.label(text="Merge: Merge vertices within submeshes")
                 box.label(text="Pack UV Islands: Sort UV islands by submesh Z position")
-                box.label(text="Bake: Auto-scale selected vertices")
+                box.label(text="Bake Vectors & Rotation: Bake vectors relative to")
+                box.label(text="  orthonormal basis & orientation quaternions")
                 box.label(text="Toggle Contiguous Groups for separate islands")
+                box.label(text="Vectors stored in vertex colors, quaternions in UV maps")
                 box.label(text="Scale factor stored in alpha channel")
 
                 mesh = obj.data
@@ -1493,7 +1698,7 @@ class MESH_PT_bake_vertex_panel(Panel):
 
 
 classes = [
-    MESH_OT_bake_vertex_vectors,
+    MESH_OT_bake_vertex_and_rotation_combined,
     MESH_OT_select_all_linked_submeshes,
     MESH_OT_select_linked_across_boundaries,
     MESH_OT_deduplicate_submeshes,
@@ -1510,7 +1715,7 @@ def menu_func(self, context):
     self.layout.operator("mesh.deduplicate_submeshes", icon='DUPLICATE')
     self.layout.operator("mesh.merge_by_distance_in_submeshes", icon='AUTOMERGE_ON')
     self.layout.operator("mesh.pack_uv_islands_by_submesh", icon='UV')
-    self.layout.operator("mesh.bake_vertex_vectors", icon='EXPORT')
+    self.layout.operator("mesh.bake_vertex_and_rotation_combined", icon='EXPORT')
 
 
 def register():