Material Editor

An editor GUI for the magnetic properties of materials. The NonLinearUI is implmented in an object-oriented way.

Screenshots

Non-Linear MaterialLinear Material

Source

from formify import *
import json
import numpy as np


def save_material():
    fn = tools.save_dialog("Save Material")
    if not fn:
        return
    with open(fn, "w+") as f:
        json.dump(material_form.value, f)


def load_current_material():
    fn = tools.open_dialog("Load Material")
    if not fn:
        return
    with open(fn) as f:
        material_form.value = json.loads(f.read())


def print_material():
    print(json.dumps(material_form.value, indent=2))


class NonLinearUI:
    def __init__(self):
        self.plot = ControlMatplotlib()
        self.table = ControlTable(
            label="Magnetization Curve",
            columns=["H in A/m", "B in T"],
            column_types=[float, float],
            variable_name="magnetization_curve",
        )

        self.ui = Row(
            self.table,
            self.plot,
        )

        self.draw = tools.BackgroundMethod(self._draw, lazy=True)
        self.table.change.subscribe(self.draw)

    def _draw(self):
        fig = self.plot.fig
        fig.clf()
        ax = fig.gca()

        B_H_data = np.array(self.table.value)
        ax.plot(B_H_data[:, 0], B_H_data[:, 1])

        ax.set_xlabel("H in A/m")
        ax.set_ylabel("B in T")
        ax.set_xscale("log")

        self.plot.draw()

checkbox_linear = ControlCheckbox("Linear B(H) characteristic", variable_name="is_linear")

# using ColSpaceBetween with a placeholder at the and makes sure the linear ui can expand just as the non-linear ui
ui_linear = ColSpaceBetween(
    ControlFloat("Relative permeability μr", value=1, variable_name="mur"),
    Placeholder(),
)

material_form = Form(Segment(
    h3("Material"),
    ControlText("Name", variable_name="name"),
    ControlFloatMega("Conductivity in MS/m", variable_name="conductivity"),
    ConditionalForm({
        True: ui_linear,
        False: NonLinearUI().ui,
    },
        condition_control=checkbox_linear,
        # "__flatten__" is a special variable name:
        # keys and values from are set in the parent level
        variable_name="__flatten__"
    ),
    Row(
        ControlButton("Save Material...", save_material),
        ControlButton("Load Material...", load_current_material),
        ControlButton("Print Material", print_material),
    ),
))

materials_form = ListForm(
    tools.maximize(material_form),
    variable_name="materials",
    display_name_callback=lambda material: material['name'],
)

MainWindow(materials_form, margin=8)