I don’t know much about coding i kinda understand the very basics so i am using chatgpt and other AIs to help me make it but i got stuck and the AI is just giving me the same code without any difference so basically i am trying to make an addon that takes the selected 3d model and takes each part and laies it out inside a mesh that i input the dimensions of basically like maxcut (i cant use max cut because it doesnt use weird shapes and i want it tin blender) so right now i cant get the xyz input field to work and there is this error “Python: Traceback (most recent call last): line 31, in execute
TypeError: bpy_struct: item.attr = val: expected sequence items of type float, not _PropertyDeferred” that i cant get the AI to fix
here is what i have so far i just need tips and explanations on how to fix and do things right
import bpy
import mathutils # Use mathutils for Blender math functions
class MyAddonSettings(bpy.types.PropertyGroup):
"""Stores dimensions for the addon"""
dimensions_x = bpy.props.FloatProperty(name="Dimension X", default=1.0)
dimensions_y = bpy.props.FloatProperty(name="Dimension Y", default=1.0)
dimensions_z = bpy.props.FloatProperty(name="Dimension Z", default=1.0)
class CopyPasteFlatOperator(bpy.types.Operator):
"""Copy and Paste Flat Operator"""
bl_idname = "object.copy_paste_flat" # Unique identifier
bl_label = "Copy Paste Flat" # Label displayed in the menu
def execute(self, context):
# Get the selected meshes
selected_meshes = bpy.context.selected_objects
# Create a new empty collection to store the copies
new_collection = bpy.data.collections.new("Copied Meshes")
bpy.context.scene.collection.children.link(new_collection)
# Create a new mesh with specified dimensions (from panel properties)
container_mesh = bpy.data.meshes.new(name="Container Mesh")
container_mesh.from_pydata(coords=[], edges=[], faces=[]) # Empty mesh data
container_object = bpy.data.objects.new(
name="Container", object_data=container_mesh
)
bpy.context.collection.objects.link(container_object)
container_object.scale = (
context.scene.my_addon.dimensions_x,
context.scene.my_addon.dimensions_y,
context.scene.my_addon.dimensions_z,
)
# Copy and paste each mesh, adjusting its location within the new mesh
for mesh in selected_meshes:
mesh_copy = mesh.copy()
mesh_copy.data = mesh.data.copy()
# Link the copy to the new collection
new_collection.objects.link(mesh_copy)
# Adjust location to be flat and centered within the container mesh
mesh_copy.location = container_object.location + (
context.scene.my_addon.dimensions_x / 2,
context.scene.my_addon.dimensions_y / 2,
context.scene.my_addon.dimensions_z / 2,
)
# Ensure copied mesh stays within container boundaries (basic approach)
max_x, max_y, max_z = (
context.scene.my_addon.dimensions_x,
context.scene.my_addon.dimensions_y,
context.scene.my_addon.dimensions_z,
)
min_x, min_y, min_z = -max_x, -max_y, -max_z
mesh_copy.scale = (
min(1.0, max_x / mesh_copy.dimensions.x),
min(1.0, max_y / mesh_copy.dimensions.y),
min(1.0, max_z / mesh_copy.dimensions.z),
)
return {'FINISHED'} # Indicate successful execution
class LayoutDemoPanel(bpy.types.Panel):
"""Creates a Panel in the scene context of the properties editor"""
bl_label = "Blender addon"
bl_idname = "SCENE_PT_layout"
bl_space_type = 'PROPERTIES'
bl_region_type = 'WINDOW'
bl_context = "object"
# Define the properties for dimensions
@classmethod
def get_settings(cls):
return bpy.context.scene.my_addon
def draw(self, context):
layout = self.layout
settings = self.get_settings()
# Add input fields for dimensions (using FloatProperty)
layout.prop(settings, "dimensions_x")
layout.prop(settings, "dimensions_y")
layout.prop(settings, "dimensions_z")
# Big button to trigger operator
layout.label(text="Create Mesh and Paste Copies:")
row = layout.row()
row.scale_y = 3.0
row.operator("object.copy_paste_flat")
def register():
# Ensure LayoutDemoPanel is registered before Scene
bpy.utils.register_class(MyAddonSettings) # Register the property group first
bpy.utils.register_class(LayoutDemoPanel)
bpy.utils.register_class(CopyPasteFlatOperator)
# Now register the property in the Scene
bpy.types.Scene.my_addon = bpy.props.PointerProperty(type=MyAddonSettings)
def unregister():
del bpy.types.Scene.my_addon
bpy.utils.unregister_class(CopyPasteFlatOperator)
bpy.utils.unregister_class(LayoutDemoPanel)
bpy.utils.unregister_class(MyAddonSettings)
if __name__ == "__main__":
register()