## On this page # Stackup Last update: 16.07.2026 ### *class* compolyx.Stackup(graph, obj, parent=None) Represents stackup. ### Attributes NameDescription[`Stackup.active`](compolyx.Stackup.active.md#compolyx.Stackup.active)Active status of the object.[`Stackup.area_price`](compolyx.Stackup.area_price.md#compolyx.Stackup.area_price)Price per area of the Stackup.[`Stackup.area_weight`](compolyx.Stackup.area_weight.md#compolyx.Stackup.area_weight)Area weight of the Stackup.[`Stackup.cut_off_material`](compolyx.Stackup.cut_off_material.md#compolyx.Stackup.cut_off_material)Cut-off material used in cut-off areas of this Stackup.[`Stackup.cut_off_material_handling`](compolyx.Stackup.cut_off_material_handling.md#compolyx.Stackup.cut_off_material_handling)Defines how cut‑off material is used in cut‑off areas of this stackup.[`Stackup.draping_material_model`](compolyx.Stackup.draping_material_model.md#compolyx.Stackup.draping_material_model)Draping material model.[`Stackup.draping_ud_coefficient`](compolyx.Stackup.draping_ud_coefficient.md#compolyx.Stackup.draping_ud_coefficient)UD Draping Coefficient.[`Stackup.drop_off_material`](compolyx.Stackup.drop_off_material.md#compolyx.Stackup.drop_off_material)Drop-off material used in drop-off areas of this Stackup.[`Stackup.drop_off_material_handling`](compolyx.Stackup.drop_off_material_handling.md#compolyx.Stackup.drop_off_material_handling)Type defining how drop-off material is used in drop-off areas of this stackup.[`Stackup.enabled`](compolyx.Stackup.enabled.md#compolyx.Stackup.enabled)Indicates whether the object is enabled.[`Stackup.fabrics`](compolyx.Stackup.fabrics.md#compolyx.Stackup.fabrics)Fabrics property of the Stackup.[`Stackup.graph_plot`](compolyx.Stackup.graph_plot.md#compolyx.Stackup.graph_plot)Graph Plot object used to configure 2D plots.[`Stackup.id`](compolyx.Stackup.id.md#compolyx.Stackup.id)ID of the object.[`Stackup.is_dict_item`](compolyx.Stackup.is_dict_item.md#compolyx.Stackup.is_dict_item)Indicates whether the object is an item in a dictionary.[`Stackup.is_list_item`](compolyx.Stackup.is_list_item.md#compolyx.Stackup.is_list_item)Indicates whether the object is an item of a list.[`Stackup.layup_sequence`](compolyx.Stackup.layup_sequence.md#compolyx.Stackup.layup_sequence)Layup Sequence of the Stackup can be 'Top-Down' or 'Bottom-Up'.[`Stackup.link_path`](compolyx.Stackup.link_path.md#compolyx.Stackup.link_path)Root path of the current node in the tree for links to this object.[`Stackup.name`](compolyx.Stackup.name.md#compolyx.Stackup.name)Name of the object.[`Stackup.parent`](compolyx.Stackup.parent.md#compolyx.Stackup.parent)Parent object in the tree.[`Stackup.root_path`](compolyx.Stackup.root_path.md#compolyx.Stackup.root_path)Root path of the current node in the tree.[`Stackup.status`](compolyx.Stackup.status.md#compolyx.Stackup.status)Status of the object.[`Stackup.status_changed`](compolyx.Stackup.status_changed.md#compolyx.Stackup.status_changed)Boolean flag which is set to true in C++ when up-to-date status of object changes.[`Stackup.symmetry`](compolyx.Stackup.symmetry.md#compolyx.Stackup.symmetry)Symmetry of the Stackup can be 'No Symmetry', 'Even Symmetry' or 'Odd Symmetry'.[`Stackup.thickness`](compolyx.Stackup.thickness.md#compolyx.Stackup.thickness)Thickness of the Stackup.[`Stackup.uid`](compolyx.Stackup.uid.md#compolyx.Stackup.uid)UID of the object.[`Stackup.vertex`](compolyx.Stackup.vertex.md#compolyx.Stackup.vertex)Raises an error if the object has been removed from the graph.### Methods NameDescription[`Stackup.add_fabric`](compolyx.Stackup.add_fabric.md#compolyx.Stackup.add_fabric)(fabric\[, angle\])Add fabric at end of fabrics of the stackup.[`Stackup.capture_analysis_plot`](compolyx.Stackup.capture_analysis_plot.md#compolyx.Stackup.capture_analysis_plot)(\[path, size\])Saves the 2D polar plot to a file.[`Stackup.clear_fabrics`](compolyx.Stackup.clear_fabrics.md#compolyx.Stackup.clear_fabrics)()Clear all fabrics.[`Stackup.clt_query`](compolyx.Stackup.clt_query.md#compolyx.Stackup.clt_query)(\[query\])Returns the properties of the classical laminate theory.[`Stackup.create_plot`](compolyx.Stackup.create_plot.md#compolyx.Stackup.create_plot)(\[query, core\_scale\_factor\])Generates 2D plots with the results of interest.[`Stackup.find_parent`](compolyx.Stackup.find_parent.md#compolyx.Stackup.find_parent)(type)Steps up the tree and returns the first parent with given type.[`Stackup.get_ordered_fabrics`](compolyx.Stackup.get_ordered_fabrics.md#compolyx.Stackup.get_ordered_fabrics)()Returns all fabrics and orientations including symmetry and layup sequence option.[`Stackup.insert_fabric`](compolyx.Stackup.insert_fabric.md#compolyx.Stackup.insert_fabric)(pos, fabric, angle)Insert fabric at given position.[`Stackup.is_constant`](compolyx.Stackup.is_constant.md#compolyx.Stackup.is_constant)()Returns true if all engineering constants and strength limits of the assigned fabrics are constant.[`Stackup.obj_exists`](compolyx.Stackup.obj_exists.md#compolyx.Stackup.obj_exists)()Checks if \_\_obj still references the c++ object (has not been reset to None by self.\_delete) and exists in the graph.[`Stackup.remove_fabric`](compolyx.Stackup.remove_fabric.md#compolyx.Stackup.remove_fabric)(pos)Remove fabric from position.[`Stackup.serialize`](compolyx.Stackup.serialize.md#compolyx.Stackup.serialize)()Serialize to Python string.[`Stackup.serialize_name_and_id`](compolyx.Stackup.serialize_name_and_id.md#compolyx.Stackup.serialize_name_and_id)()Serializes the name and ID.[`Stackup.update`](compolyx.Stackup.update.md#compolyx.Stackup.update)()[`Stackup.update_plot`](compolyx.Stackup.update_plot.md#compolyx.Stackup.update_plot)()updates the data of the 2D plot.[`Stackup.visit`](compolyx.Stackup.visit.md#compolyx.Stackup.visit)(visitor)Walk through the tree and let the visitor perform action on every descendant node.