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/presets/keyconfig/keymap_data/blender_default.py

@@ -5868,6 +5868,23 @@ def km_3d_view_tool_edit_mesh_extrude_region(params):
         ]},
     )
 
+def km_3d_view_tool_edit_mesh_extrude_dissolve_and_intersect(params):
+    return (
+        "3D View Tool: Edit Mesh, Extrude Dissolve and Intersect",
+        {"space_type": 'VIEW_3D', "region_type": 'WINDOW'},
+        {"items": [
+            ("mesh.extrude_region_dissolve_move_intersect", {"type": params.tool_tweak, "value": 'ANY'},
+             {"properties": [
+                 ("MESH_OT_extrude_region", [("use_dissolve_ortho_edges", True)]),
+                 ("TRANSFORM_OT_translate", [
+                     ("release_confirm", True),
+                     ("use_automerge_and_split", True),
+                     ("constraint_axis", (False, False, True)),
+                     ("orient_type", 'NORMAL'),
+                 ]),
+              ]}),
+        ]},
+    )
 
 def km_3d_view_tool_edit_mesh_extrude_along_normals(params):
     return (
@@ -6712,6 +6729,7 @@ def generate_keymaps(params=None):
         km_3d_view_tool_edit_armature_extrude_to_cursor(params),
         km_3d_view_tool_edit_mesh_add_cube(params),
         km_3d_view_tool_edit_mesh_extrude_region(params),
+        km_3d_view_tool_edit_mesh_extrude_dissolve_and_intersect(params),
         km_3d_view_tool_edit_mesh_extrude_along_normals(params),
         km_3d_view_tool_edit_mesh_extrude_individual(params),
         km_3d_view_tool_edit_mesh_extrude_to_cursor(params),

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,
 )

release/scripts/startup/bl_ui/space_toolsystem_toolbar.py

@@ -670,6 +670,20 @@ class _defs_edit_mesh:
             draw_settings=_template_widget.VIEW3D_GGT_xform_extrude.draw_settings,
         )
 
+    @ToolDef.from_fn
+    def extrude_dissolve_and_intersect():
+        return dict(
+            idname="builtin.extrude_dissolve_and_intersect",
+            label="Extrude Dissolve and Intersect",
+            description=(
+                "Extrude, dissolves edges whose faces form a flat surface and intersect new edges"
+            ),
+            icon="none",
+            widget="VIEW3D_GGT_tool_generic_handle_normal",
+            operator="view3d.edit_mesh_extrude_dissolve_and_intersect",
+            keymap=(),
+        )
+
     @ToolDef.from_fn
     def extrude_normals():
         def draw_settings(_context, layout, tool):
@@ -2114,6 +2128,7 @@ class VIEW3D_PT_tools_active(ToolSelectPanelHelper, Panel):
             None,
             (
                 _defs_edit_mesh.extrude,
+                _defs_edit_mesh.extrude_dissolve_and_intersect,
                 _defs_edit_mesh.extrude_normals,
                 _defs_edit_mesh.extrude_individual,
                 _defs_edit_mesh.extrude_cursor,

source/blender/editors/mesh/mesh_ops.c

@@ -277,6 +277,18 @@ void ED_operatormacros_mesh(void)
   RNA_boolean_set(otmacro->ptr, "use_proportional_edit", false);
   RNA_boolean_set(otmacro->ptr, "mirror", false);
 
+  ot = WM_operatortype_append_macro(
+      "MESH_OT_extrude_region_dissolve_move_intersect",
+      "Extrude, Dissolve, Move and Intersect",
+      "Extrude, dissolves edges whose faces form a flat surface and intersect new edges",
+      OPTYPE_UNDO | OPTYPE_REGISTER);
+  otmacro = WM_operatortype_macro_define(ot, "MESH_OT_extrude_region");
+  RNA_boolean_set(otmacro->ptr, "use_dissolve_ortho_edges", true);
+  otmacro = WM_operatortype_macro_define(ot, "TRANSFORM_OT_translate");
+  RNA_boolean_set(otmacro->ptr, "use_proportional_edit", false);
+  RNA_boolean_set(otmacro->ptr, "mirror", false);
+  RNA_boolean_set(otmacro->ptr, "use_automerge_and_split", true);
+
   ot = WM_operatortype_append_macro("MESH_OT_extrude_context_move",
                                     "Extrude Region and Move",
                                     "Extrude region together along the average normal",