View3D: New tool 'Extrude, Dissolve and Intersect'

Basically this new tool constitutes a macro that uses the parameters of
the Extrude and Translate operators that were recently implemented.

Thanks to @CandleComet for initial implementation.

Differential Revision: https://developer.blender.org/D7222

release/scripts/startup/bl_operators/view3d.py

@@ -125,6 +125,68 @@ class VIEW3D_OT_edit_mesh_extrude_move(Operator):
         return self.execute(context)
 
 
+class VIEW3D_OT_edit_mesh_extrude_dissolve_and_intersect(Operator):
+    """Extrude region together along the average normal"""
+    bl_label = "Extrude, Dissolve, Move and Intersect"
+    bl_idname = "view3d.edit_mesh_extrude_dissolve_and_intersect"
+
+    @classmethod
+    def poll(cls, context):
+        obj = context.active_object
+        return (obj is not None and obj.mode == 'EDIT')
+
+    @staticmethod
+    def extrude_region(context, use_vert_normals):
+        mesh = context.object.data
+
+        totface = mesh.total_face_sel
+        totedge = mesh.total_edge_sel
+        # totvert = mesh.total_vert_sel
+
+        if totface >= 1:
+            if use_vert_normals:
+                bpy.ops.mesh.extrude_region_shrink_fatten(
+                    'INVOKE_REGION_WIN',
+                    TRANSFORM_OT_shrink_fatten={},
+                )
+            else:
+                bpy.ops.mesh.extrude_region_dissolve_move_intersect(
+                    'INVOKE_REGION_WIN',
+                    MESH_OT_extrude_region_move={
+                        "use_dissolve_ortho_edges": True,
+                    },
+                    TRANSFORM_OT_translate={
+                        "orient_type": 'NORMAL',
+                        "constraint_axis": (False, False, True),
+                        "use_automerge_and_split": True,
+                    },
+                )
+
+        elif totedge == 1:
+            bpy.ops.mesh.extrude_region_move(
+                'INVOKE_REGION_WIN',
+                TRANSFORM_OT_translate={
+                    # Don't set the constraint axis since users will expect MMB
+                    # to use the user setting, see: T61637
+                    # "orient_type": 'NORMAL',
+                    # Not a popular choice, too restrictive for retopo.
+                    # "constraint_axis": (True, True, False)})
+                    "constraint_axis": (False, False, False),
+                })
+        else:
+            bpy.ops.mesh.extrude_region_move('INVOKE_REGION_WIN')
+
+        # ignore return from operators above because they are 'RUNNING_MODAL',
+        # and cause this one not to be freed. [#24671]
+        return {'FINISHED'}
+
+    def execute(self, context):
+        return VIEW3D_OT_edit_mesh_extrude_dissolve_and_intersect.extrude_region(context, False)
+
+    def invoke(self, context, _event):
+        return self.execute(context)
+
+
 class VIEW3D_OT_edit_mesh_extrude_shrink_fatten(Operator):
     """Extrude region together along local normals"""
     bl_label = "Extrude and Move on Individual Normals"
@@ -190,6 +252,7 @@ class VIEW3D_OT_transform_gizmo_set(Operator):
 classes = (
     VIEW3D_OT_edit_mesh_extrude_individual_move,
     VIEW3D_OT_edit_mesh_extrude_move,
+    VIEW3D_OT_edit_mesh_extrude_dissolve_and_intersect,
     VIEW3D_OT_edit_mesh_extrude_shrink_fatten,
     VIEW3D_OT_transform_gizmo_set,
 )