import bpy import bmesh def add_box(width, height, depth): """ This function takes inputs and returns vertex and face arrays. no actual mesh data creation is done here. """ verts = [(+1.0, +1.0, -1.0), (+1.0, -1.0, -1.0), (-1.0, -1.0, -1.0), (-1.0, +1.0, -1.0), (+1.0, +1.0, +1.0), (+1.0, -1.0, +1.0), (-1.0, -1.0, +1.0), (-1.0, +1.0, +1.0), ] faces = [(0, 1, 2, 3), (4, 7, 6, 5), (0, 4, 5, 1), (1, 5, 6, 2), (2, 6, 7, 3), (4, 0, 3, 7), ] # apply size for i, v in enumerate(verts): verts[i] = v[0] * width, v[1] * depth, v[2] * height return verts, faces from bpy.props import FloatProperty, BoolProperty, FloatVectorProperty class AddBox(bpy.types.Operator): """Add a simple box mesh""" bl_idname = "mesh.primitive_box_add" bl_label = "Add Box" bl_options = {'REGISTER', 'UNDO'} width = FloatProperty( name="Width", description="Box Width", min=0.01, max=100.0, default=1.0, ) height = FloatProperty( name="Height", description="Box Height", min=0.01, max=100.0, default=1.0, ) depth = FloatProperty( name="Depth", description="Box Depth", min=0.01, max=100.0, default=1.0, ) # generic transform props view_align = BoolProperty( name="Align to View", default=False, ) location = FloatVectorProperty( name="Location", subtype='TRANSLATION', ) rotation = FloatVectorProperty( name="Rotation", subtype='EULER', ) def execute(self, context): verts_loc, faces = add_box(self.width, self.height, self.depth, ) mesh = bpy.data.meshes.new("Box") bm = bmesh.new() for v_co in verts_loc: bm.verts.new(v_co) for f_idx in faces: bm.faces.new([bm.verts[i] for i in f_idx]) bm.to_mesh(mesh) mesh.update() # add the mesh as an object into the scene with this utility module from bpy_extras import object_utils object_utils.object_data_add(context, mesh, operator=self) return {'FINISHED'} def menu_func(self, context): self.layout.operator(AddBox.bl_idname, icon='MESH_CUBE') def register(): bpy.utils.register_class(AddBox) bpy.types.INFO_MT_mesh_add.append(menu_func) def unregister(): bpy.utils.unregister_class(AddBox) bpy.types.INFO_MT_mesh_add.remove(menu_func) if __name__ == "__main__": register() # test call bpy.ops.mesh.primitive_box_add()