feat: add boolean slice operator

booleans/__init__.py

@@ -1,14 +1,18 @@
 import importlib
 from . import vanilla
+from . import boolean_slice
 
 
 def reload():
     importlib.reload(vanilla)
+    importlib.reload(boolean_slice)
 
 
 def register():
     vanilla.register()
+    boolean_slice.register()
 
 
 def unregister():
     vanilla.unregister()
+    boolean_slice.unregister()

booleans/boolean_slice.py

@@ -0,0 +1,55 @@
+import bpy
+
+
+class ND_OT_bool_slice(bpy.types.Operator):
+    bl_idname = "nd.bool_slice"
+    bl_label = "Slice"
+    bl_description = "Perform a boolean operation on the selected objects"
+    bl_options = {'UNDO'}
+
+
+    @classmethod
+    def poll(cls, context):
+        if context.mode == 'OBJECT':
+            return len(context.selected_objects) == 2
+
+
+    def execute(self, context):
+        a, b = context.selected_objects
+        reference_obj = a if a.name != context.object.name else b
+
+        difference_obj = context.object
+
+        intersecting_obj = context.object.copy()
+        intersecting_obj.data = context.object.data.copy()
+        intersecting_obj.animation_data_clear()
+        context.collection.objects.link(intersecting_obj)
+
+        boolean_diff = difference_obj.modifiers.new("Difference — ND Bool", 'BOOLEAN')
+        boolean_diff.operation = 'DIFFERENCE'
+        boolean_diff.object = reference_obj
+        boolean_diff.solver = 'EXACT'
+
+        boolean_isect = intersecting_obj.modifiers.new("Intersection — ND Bool", 'BOOLEAN')
+        boolean_isect.operation = 'INTERSECT'
+        boolean_isect.object = reference_obj
+        boolean_isect.solver = 'EXACT'
+
+        reference_obj.display_type = 'WIRE'
+        reference_obj.hide_render = True
+
+        return {'FINISHED'}
+
+
+def menu_func(self, context):
+    self.layout.operator(ND_OT_bool_slice.bl_idname, text=ND_OT_bool_slice.bl_label)
+
+
+def register():
+    bpy.utils.register_class(ND_OT_bool_slice)
+    bpy.types.VIEW3D_MT_object.append(menu_func)
+
+
+def unregister():
+    bpy.utils.unregister_class(ND_OT_bool_slice)
+    bpy.types.VIEW3D_MT_object.remove(menu_func)

interface/__init__.py

@@ -3,24 +3,28 @@
 from . import utils_ui_panel
 from . import main_menu
 from . import utils_menu
+from . import boolean_menu
 
 
 def reload():
     importlib.reload(main_ui_panel)
     importlib.reload(utils_ui_panel)
     importlib.reload(main_menu)
     importlib.reload(utils_menu)
+    importlib.reload(boolean_menu)
 
 
 def register():
     main_ui_panel.register()
     utils_ui_panel.register()
     main_menu.register()
     utils_menu.register()
+    boolean_menu.register()
 
 
 def unregister():
     main_ui_panel.unregister()
     utils_ui_panel.unregister()
     main_menu.unregister()
-    utils_menu.unregister()
+    utils_menu.unregister()
+    boolean_menu.unregister()

interface/boolean_menu.py

@@ -0,0 +1,31 @@
+import bpy
+from .. import bl_info
+
+
+class ND_MT_boolean_menu(bpy.types.Menu):
+    bl_label = "Booleans"
+    bl_idname = "ND_MT_boolean_menu"
+
+
+    def draw(self, context):
+        layout = self.layout
+        layout.operator_context = 'INVOKE_DEFAULT'
+        layout.operator("nd.bool_vanilla", text="Difference", icon='MOD_BOOLEAN').mode = 'DIFFERENCE'
+        layout.operator("nd.bool_vanilla", text="Union", icon='MOD_BOOLEAN').mode = 'UNION'
+        layout.operator("nd.bool_vanilla", text="Intersect", icon='MOD_BOOLEAN').mode = 'INTERSECT'
+        layout.operator("nd.bool_slice", icon='MOD_BOOLEAN')
+
+
+def draw_item(self, context):
+    layout = self.layout
+    layout.menu(ND_MT_boolean_menu.bl_idname)
+
+
+def register():
+    bpy.utils.register_class(ND_MT_boolean_menu)
+    bpy.types.INFO_HT_header.append(draw_item)
+
+
+def unregister():
+    bpy.utils.unregister_class(ND_MT_boolean_menu)
+    bpy.types.INFO_HT_header.remove(draw_item)

interface/main_menu.py

@@ -18,9 +18,7 @@ def draw(self, context):
         layout.operator("nd.blank_sketch", icon='GREASEPENCIL')
         layout.operator("nd.vertex_bevel", icon='MOD_BEVEL')
         layout.separator()
-        layout.operator("nd.bool_vanilla", text="Difference", icon='MOD_BOOLEAN').mode = 'DIFFERENCE'
-        layout.operator("nd.bool_vanilla", text="Union", icon='MOD_BOOLEAN').mode = 'UNION'
-        layout.operator("nd.bool_vanilla", text="Intersect", icon='MOD_BOOLEAN').mode = 'INTERSECT'
+        layout.menu("ND_MT_boolean_menu", icon='MOD_BOOLEAN')
         layout.operator("nd.weighted_normal_bevel", icon='MOD_BEVEL')
         layout.operator("nd.solidify", icon='MOD_SOLIDIFY')
         layout.operator("nd.screw", icon='MOD_SCREW')

interface/main_ui_panel.py

@@ -59,14 +59,12 @@ def draw(self, context):
         row = column.row(align=True)
         row.scale_y = 1.2
         row.operator("nd.bool_vanilla", text="Difference", icon='MOD_BOOLEAN').mode = 'DIFFERENCE'
-
-        row = column.row(align=True)
-        row.scale_y = 1.2
         row.operator("nd.bool_vanilla", text="Union", icon='MOD_BOOLEAN').mode = 'UNION'
 
         row = column.row(align=True)
         row.scale_y = 1.2
         row.operator("nd.bool_vanilla", text="Intersect", icon='MOD_BOOLEAN').mode = 'INTERSECT'
+        row.operator("nd.bool_slice", icon='MOD_BOOLEAN')
 
         row = column.row(align=True)
         row.scale_y = 1.2