mesh.primitive_sedia_add

import bpy
from math import pi


class MESH_OT_sedia(bpy.types.Operator):
    """Aggiunge una sedia alla scena"""
    bl_idname = "mesh.primitive_sedia_add"
    bl_label ="Sedia"
    bl_options = {'REGISTER', 'UNDO'}


    lun: bpy.props.FloatProperty(
        name="Lato seduta",
        default=.5,
        unit='LENGTH',
        min=.3,
        soft_max=.6,
    )
    spe: bpy.props.FloatProperty(
        name="Spessore",
        default=.05,
        unit='LENGTH',
        min=.01,
        max=.1,
    )
    alt: bpy.props.FloatProperty(
        name="Altezza",
        default=.5,
        unit='LENGTH',
        min=.4,
        max=.6,
    )
    dia: bpy.props.FloatProperty(
        name="Diametro",
        default=.05,
        unit='LENGTH',
        min=.04,
        max=.1,
    )
    gap: bpy.props.FloatProperty(
        name="Gap Gamba-seduta",
        default=.02,
        unit='LENGTH',
        min=0,
        max=.1,
    )
    loc: bpy.props.FloatVectorProperty(
        name="Posizione",
        default=(0,0),
        size=2,
        unit='LENGTH',
    )
    rot: bpy.props.FloatProperty(
        name="Rotazione",
        default=0,
        unit='ROTATION',
    )

    def execute(self,context):
        lun=self.lun
        spe=self.spe
        alt=self.alt
        dia=self.dia
        gap=self.gap
        loc=self.loc
        rot=self.rot


        bpy.ops.mesh.primitive_cube_add(size=2,location=(loc[0],loc[1],alt+spe/2),scale=(lun,lun,spe),rotation=(0,0,rot))
        seduta=bpy.context.object
        bpy.ops.mesh.primitive_cube_add(size=2,location=(0+lun/2-spe/2,0,lun/2+spe/2),scale=(spe,lun,lun))
        spalliera=bpy.context.object
        spalliera.parent=seduta
        loc_x=lun/2-dia/2-gap
        loc_y=lun/2-dia/2-gap
        bpy.ops.mesh.primitive_cylinder_add(vertices=64,radius=dia/2,depth=alt,location=(loc_x,loc_y,-alt/2-spe/2))
        gambo1=bpy.context.object
        gambo1.parent=seduta
        bpy.ops.mesh.primitive_cylinder_add(vertices=64,radius=dia/2,depth=alt,location=(loc_x,-loc_y,-alt/2-spe/2))
        gambo2=bpy.context.object
        gambo2.parent=seduta
        bpy.ops.mesh.primitive_cylinder_add(vertices=64,radius=dia/2,depth=alt,location=(-loc_x,loc_y,-alt/2-spe/2))
        gambo3=bpy.context.object
        gambo3.parent=seduta
        bpy.ops.mesh.primitive_cylinder_add(vertices=64,radius=dia/2,depth=alt,location=(-loc_x,-loc_y,-alt/2-spe/2))
        gambo4=bpy.context.object
        gambo4.parent=seduta
        return {'FINISHED'}


def register():
    bpy.utils.register_class(MESH_OT_sedia)

def unregister():
    bpy.utils.unregister_class(MESH_OT_sedia)

if __name__ == '__main__':
 register()