How to simplify this class of plugins

Question

All classes are basically the same, just one line of code is different bpy.context.space_data.camera = bpy.data.objects["C_0V0"]

bl_info = {
    "name": "CamS",
    "description": "",
    "author": "Jim lee",
    "version": (1, 0, 0),
    "blender": (3, 3, 0),
    "location": "",
    "warning": "",
    "wiki_url": "",
    "category": "My"
}
import bpy
class C_0V0(bpy.types.Operator):
    bl_idname = "cam.c0v0"
    bl_label = "C_0V0"
    cam_name = "C_0V0"
def execute(self, context):
    C = bpy.context
    C.object.lock_scale = (True, True, True)
    C.object.lock_rotation = (True, True, True)
    C.object.lock_location = (True, True, True)

    # select cam
    C.space_data.camera = bpy.data.objects[&quot;C_0V0&quot;]

    # Select Active Cam
    for area in C.screen.areas:
        if area.type == 'VIEW_3D':
            A = C.area.spaces.active.camera

    C.scene.camera = bpy.data.objects[A.name]

    C.space_data.shading.color_type = 'OBJECT'
    C.space_data.region_3d.view_perspective = 'CAMERA'

    bpy.data.objects[A.name].lock_scale = (True, True, True)
    bpy.data.objects[A.name].lock_location = (True, True, True)
    bpy.data.objects[A.name].lock_rotation = (True, True, True)
    bpy.data.objects[A.name].scale = (1, 1, 1)
    bpy.data.cameras[A.name].display_size = 0.05
    bpy.data.cameras[A.name].background_images[0].alpha = 0
    bpy.data.cameras[A.name].dof.use_dof = False
    bpy.data.cameras[A.name].clip_start = 25
    bpy.data.cameras[A.name].clip_end = 100000
    bpy.data.cameras[A.name].background_images[0].scale = 1
    bpy.data.cameras[A.name].background_images[1].scale = 1
    bpy.data.cameras[A.name].background_images[2].scale = 1

    bpy.ops.view3d.view_center_camera()
    bpy.ops.image.reload()

    if C.object.mode == 'OBJECT':
        bpy.ops.object.select_all(action='DESELECT')
        objectToSelect = bpy.data.objects[A.name]
        objectToSelect.select_set(True)
        C.view_layer.objects.active = objectToSelect

        C.view_layer.objects.active = objectToSelect

    return {'FINISHED'}



class C_0V1(bpy.types.Operator):
    bl_idname = "cam.c0v1"
    bl_label = "C_0V1"
    cam_name = "C_0V1"
def execute(self, context):
    C = bpy.context
    C.object.lock_scale = (True, True, True)
    C.object.lock_rotation = (True, True, True)
    C.object.lock_location = (True, True, True)

    # select cam
    C.space_data.camera = bpy.data.objects[&quot;C_0V1&quot;]

    # Select Active Cam
    for area in C.screen.areas:
        if area.type == 'VIEW_3D':
            A = C.area.spaces.active.camera

    C.scene.camera = bpy.data.objects[A.name]

    C.space_data.shading.color_type = 'OBJECT'
    C.space_data.region_3d.view_perspective = 'CAMERA'
    # bpy.data.cameras[A.name].photographer.longedge = 4096

    bpy.data.objects[A.name].lock_scale = (True, True, True)
    bpy.data.objects[A.name].lock_location = (True, True, True)
    bpy.data.objects[A.name].lock_rotation = (True, True, True)
    bpy.data.objects[A.name].scale = (1, 1, 1)
    bpy.data.cameras[A.name].display_size = 0.05
    bpy.data.cameras[A.name].background_images[0].alpha = 0
    bpy.data.cameras[A.name].dof.use_dof = False
    bpy.data.cameras[A.name].clip_start = 25
    bpy.data.cameras[A.name].clip_end = 100000
    bpy.data.cameras[A.name].background_images[0].scale = 1
    bpy.data.cameras[A.name].background_images[1].scale = 1
    bpy.data.cameras[A.name].background_images[2].scale = 1

    bpy.ops.view3d.view_center_camera()
    bpy.ops.image.reload()

    if C.object.mode == 'OBJECT':
        bpy.ops.object.select_all(action='DESELECT')
        objectToSelect = bpy.data.objects[A.name]
        objectToSelect.select_set(True)
        C.view_layer.objects.active = objectToSelect

        C.view_layer.objects.active = objectToSelect

    return {'FINISHED'}


addon_keymaps = []
def register():
    bpy.utils.register_class(Cam_0V0)
    bpy.utils.register_class(Cam_0V1)
def unregister():
    bpy.utils.unregister_class(Cam_0V0)
    bpy.utils.unregister_class(Cam_0V1)
if name == "main":
    register()

Is your goal to register 3 classes or 1 class? – X Y Apr 19 '23 at 14:11 — X Y, Apr 19 '23 at 14:11
register 3 classes and can call it with a button – lee blues Apr 20 '23 at 03:59 — lee blues, Apr 20 '23 at 03:59

score 2 · Answer 1 · answered Apr 19 '23 at 14:47

You can define a base class to eliminate the redundancy

import bpy
class Cam_Base(bpy.types.Operator):
    bl_idname = "cam.base"
    bl_label = "Cam Base"
    cam_name = "C_"
def execute(self, context):
    C = bpy.context

    # lock cam
    bpy.context.object.lock_scale = (True, True, True)
    bpy.context.object.lock_rotation = (True, True, True)
    bpy.context.object.lock_location = (True, True, True)

    # select cam
    bpy.context.space_data.camera = bpy.data.objects[self.cam_name]

    # Select Active Cam
    for area in C.screen.areas:
        if area.type == 'VIEW_3D':
            A = C.area.spaces.active.camera

    bpy.context.scene.camera = bpy.data.objects[A.name]
    return {'FINISHED'}


class Cam_0V0(Cam_Base):
    bl_idname = "cam.0v0"
    bl_label = "Cam_0V0"
    cam_name = "C_0V0"
class Cam_0V1(Cam_Base):
    bl_idname = "cam.0v1"
    bl_label = "Cam_0V1"
    cam_name = "C_0V1"
class Cam_0V2(Cam_Base):
    bl_idname = "cam.0v2"
    bl_label = "Cam_0V2"
    cam_name = "C_0V2"
addon_keymaps = []
def register():
    bpy.utils.register_class(Cam_Base)
    bpy.utils.register_class(Cam_0V0)
    bpy.utils.register_class(Cam_0V1)
    bpy.utils.register_class(Cam_0V2)
def unregister():
    bpy.utils.unregister_class(Cam_Base)
    bpy.utils.unregister_class(Cam_0V0)
    bpy.utils.unregister_class(Cam_0V1)
    bpy.utils.unregister_class(Cam_0V2)
if name == "main":
    register()

Please see my additional questions that according to the answer I added the code to make the command into a button but there is an error, how to make a button to call this class? — lee blues, Apr 20 '23 at 03:54
Thanks for the reply, if I want these classes to be called by other plugins, like Pie Menu Editor addon, do I have to add some other code? For example “def invoke”，How do I write it — lee blues, Apr 20 '23 at 04:56
Thanks for the reminder, I have re-asked a question with the following link https://blender.stackexchange.com/questions/291104/how-do-get-the-classes-to-be-called-by-other-addons — lee blues, Apr 20 '23 at 05:30
hi，You rewrite the code there is a little problem, before my code ca switch the area‘s camera in the current area where the mouse is located,it is this paragraph code： “bpy.context.space_data.camera = bpy.data.objects["C_0V0"]” change to “c.space_data.camera = bpy.data.objects[self.cam_name]” It doesn't work anymore.，But the new code can only switch the camera in one area now when there ara many areas in windows, how can I modify it? — lee blues, Apr 21 '23 at 09:05

How to simplify this class of plugins

1 Answers1