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main.py
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main.py
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from math import sqrt
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import *
from numpy import linspace, meshgrid
from surface_chart import SurfaceChart
from simplex import Simplex
import os, sys
def resource_path(relative_path):
if hasattr(sys, '_MEIPASS'):
return os.path.join(sys._MEIPASS, relative_path)
return os.path.join(os.path.abspath('.'), relative_path)
class WidgetSimplexTest(QDialog):
def __init__(self, parent=None):
super(WidgetSimplexTest, self).__init__(parent)
self.steps = []
self.current_step = 0
self.originalPalette = QApplication.palette()
layout = QHBoxLayout()
# TOP LABELS
chart_group_box = QGroupBox("Wykres funkcji i kolejne kroki metody")
chart_box = QVBoxLayout()
chart_group_box.setLayout(chart_box)
menu_group_box = QGroupBox("Menu")
menu_box = QVBoxLayout()
menu_group_box.setLayout(menu_box)
# GROUP BY SPLITTERS
splitter_1 = QSplitter(Qt.Horizontal)
splitter_1.addWidget(chart_group_box)
splitter_1.addWidget(menu_group_box)
splitter_1.setSizes([900, 200])
layout.addWidget(splitter_1)
# CHART
chart_draw_group_box = QGroupBox("Wizualizacja:")
chart_draw_box = QVBoxLayout()
chart_draw_group_box.setLayout(chart_draw_box)
chart_box.addWidget(chart_draw_group_box)
self.chart = SurfaceChart()
chart_draw_box.addWidget(self.chart)
steps_group_box = QGroupBox("Etapy poszukiwania ekstremum:")
steps_form = QVBoxLayout()
steps_group_box.setLayout(steps_form)
chart_box.addWidget(steps_group_box)
data_steps_group_box = QWidget()
steps_box = QHBoxLayout()
data_steps_group_box.setLayout(steps_box)
steps_form.addWidget(data_steps_group_box)
point_0_column = QWidget()
point_0_box = QVBoxLayout()
point_0_column.setLayout(point_0_box)
steps_box.addWidget(point_0_column)
point_0_x_group_box = QWidget()
point_0_x_layout = QHBoxLayout()
point_0_x_group_box.setLayout(point_0_x_layout)
point_0_box.addWidget(point_0_x_group_box)
point_0_x_label = QLabel("x<sub>0</sub> = ")
point_0_x_layout.addWidget(point_0_x_label)
self.point_0_x = QLineEdit()
self.point_0_x.setText("")
self.point_0_x.setDisabled(True)
point_0_x_layout.addWidget(self.point_0_x)
point_0_y_group_box = QWidget()
point_0_y_layout = QHBoxLayout()
point_0_y_group_box.setLayout(point_0_y_layout)
point_0_box.addWidget(point_0_y_group_box)
point_0_y_label = QLabel("y<sub>0</sub> = ")
point_0_y_layout.addWidget(point_0_y_label)
self.point_0_y = QLineEdit()
self.point_0_y.setText("")
self.point_0_y.setDisabled(True)
point_0_y_layout.addWidget(self.point_0_y)
point_0_z_group_box = QWidget()
point_0_z_layout = QHBoxLayout()
point_0_z_group_box.setLayout(point_0_z_layout)
point_0_box.addWidget(point_0_z_group_box)
point_0_z_label = QLabel("f(x<sub>0</sub>y<sub>0</sub>) = ")
point_0_z_layout.addWidget(point_0_z_label)
self.point_0_z = QLineEdit()
self.point_0_z.setText("")
self.point_0_z.setDisabled(True)
point_0_z_layout.addWidget(self.point_0_z)
point_1_column = QWidget()
point_1_box = QVBoxLayout()
point_1_column.setLayout(point_1_box)
steps_box.addWidget(point_1_column)
point_1_x_group_box = QWidget()
point_1_x_layout = QHBoxLayout()
point_1_x_group_box.setLayout(point_1_x_layout)
point_1_box.addWidget(point_1_x_group_box)
point_1_x_label = QLabel("x<sub>1</sub> = ")
point_1_x_layout.addWidget(point_1_x_label)
self.point_1_x = QLineEdit()
self.point_1_x.setText("")
self.point_1_x.setDisabled(True)
point_1_x_layout.addWidget(self.point_1_x)
point_1_y_group_box = QWidget()
point_1_y_layout = QHBoxLayout()
point_1_y_group_box.setLayout(point_1_y_layout)
point_1_box.addWidget(point_1_y_group_box)
point_1_y_label = QLabel("y<sub>1</sub> = ")
point_1_y_layout.addWidget(point_1_y_label)
self.point_1_y = QLineEdit()
self.point_1_y.setText("")
self.point_1_y.setDisabled(True)
point_1_y_layout.addWidget(self.point_1_y)
point_1_z_group_box = QWidget()
point_1_z_layout = QHBoxLayout()
point_1_z_group_box.setLayout(point_1_z_layout)
point_1_box.addWidget(point_1_z_group_box)
point_1_z_label = QLabel("f(x<sub>1</sub>y<sub>1</sub>) = ")
point_1_z_layout.addWidget(point_1_z_label)
self.point_1_z = QLineEdit()
self.point_1_z.setText("")
self.point_1_z.setDisabled(True)
point_1_z_layout.addWidget(self.point_1_z)
point_2_column = QWidget()
point_2_box = QVBoxLayout()
point_2_column.setLayout(point_2_box)
steps_box.addWidget(point_2_column)
point_2_x_group_box = QWidget()
point_2_x_layout = QHBoxLayout()
point_2_x_group_box.setLayout(point_2_x_layout)
point_2_box.addWidget(point_2_x_group_box)
point_2_x_label = QLabel("x<sub>2</sub> = ")
point_2_x_layout.addWidget(point_2_x_label)
self.point_2_x = QLineEdit()
self.point_2_x.setText("")
self.point_2_x.setDisabled(True)
point_2_x_layout.addWidget(self.point_2_x)
point_2_y_group_box = QWidget()
point_2_y_layout = QHBoxLayout()
point_2_y_group_box.setLayout(point_2_y_layout)
point_2_box.addWidget(point_2_y_group_box)
point_2_y_label = QLabel("y<sub>2</sub> = ")
point_2_y_layout.addWidget(point_2_y_label)
self.point_2_y = QLineEdit()
self.point_2_y.setText("")
self.point_2_y.setDisabled(True)
point_2_y_layout.addWidget(self.point_2_y)
point_2_z_group_box = QWidget()
point_2_z_layout = QHBoxLayout()
point_2_z_group_box.setLayout(point_2_z_layout)
point_2_box.addWidget(point_2_z_group_box)
point_2_z_label = QLabel("f(x<sub>2</sub>y<sub>2</sub>) = ")
point_2_z_layout.addWidget(point_2_z_label)
self.point_2_z = QLineEdit()
self.point_2_z.setText("")
self.point_2_z.setDisabled(True)
point_2_z_layout.addWidget(self.point_2_z)
steps_buttons_column = QWidget()
steps_buttons_box = QVBoxLayout()
steps_buttons_column.setLayout(steps_buttons_box)
steps_box.addWidget(steps_buttons_column)
step_count_box = QWidget()
step_count_layout = QHBoxLayout()
step_count_box.setLayout(step_count_layout)
steps_buttons_box.addWidget(step_count_box)
step_count_label = QLabel("Krok: ")
step_count_layout.addWidget(step_count_label)
self.step_count = QLabel("")
step_count_layout.addWidget(self.step_count)
operation_title_box = QWidget()
operation_title_layout = QHBoxLayout()
operation_title_box.setLayout(operation_title_layout)
steps_buttons_box.addWidget(operation_title_box)
operation_title_label = QLabel("Operacja: ")
operation_title_layout.addWidget(operation_title_label)
self.operation_title = QLabel("")
operation_title_layout.addWidget(self.operation_title)
founded_min_box = QWidget()
founded_min_layout = QHBoxLayout()
founded_min_box.setLayout(founded_min_layout)
steps_buttons_box.addWidget(founded_min_box)
founded_min_label = QLabel("Minimum: ")
founded_min_layout.addWidget(founded_min_label)
self.founded_min = QLabel("")
founded_min_layout.addWidget(self.founded_min)
self.previous_step_button = QPushButton("Poprzedni krok")
self.previous_step_button.setCheckable(False)
self.previous_step_button.setDisabled(True)
self.previous_step_button.clicked.connect(self.draw_previous_step)
steps_buttons_box.addWidget(self.previous_step_button)
self.next_step_button = QPushButton("Następny krok")
self.next_step_button.setCheckable(False)
self.next_step_button.setDisabled(True)
self.next_step_button.clicked.connect(self.draw_next_step)
steps_buttons_box.addWidget(self.next_step_button)
self.steps_slider = QSlider(Qt.Horizontal)
self.steps_slider.setMinimum(0)
self.steps_slider.setMaximum(0)
self.steps_slider.setSingleStep(1)
self.steps_slider.setDisabled(True)
self.steps_slider.setTickInterval(True)
self.steps_slider.setTickPosition(QSlider.TicksBelow)
self.steps_slider.sliderReleased.connect(self.draw_by_slider)
steps_form.addWidget(self.steps_slider)
# MENU
# f
f_group_box = QGroupBox("Funkcja celu:")
f_layout = QHBoxLayout()
f_group_box.setLayout(f_layout)
menu_box.addWidget(f_group_box)
f_label = QLabel("f(x, y) = ")
f_layout.addWidget(f_label)
self.f_text = QLineEdit()
self.f_text.setText("x*x + y*y - 3/2*x*y")
f_layout.addWidget(self.f_text)
# x0, y0
x0y0_group_box = QGroupBox("Arbitralnie wybrany punkt startowy:")
x0y0_layout = QVBoxLayout()
x0y0_group_box.setLayout(x0y0_layout)
menu_box.addWidget(x0y0_group_box)
x0_group_box = QWidget()
x0_layout = QHBoxLayout()
x0_group_box.setLayout(x0_layout)
x0y0_layout.addWidget(x0_group_box)
y0_group_box = QWidget()
y0_layout = QHBoxLayout()
y0_group_box.setLayout(y0_layout)
x0y0_layout.addWidget(y0_group_box)
x0_label = QLabel("x<sub>0</sub> = ")
x0_label.setFixedWidth(30)
x0_layout.addWidget(x0_label)
self.x0 = QDoubleSpinBox()
self.x0.setValue(5)
self.x0.setMinimum(-1000.0)
self.x0.setMaximum(1000.0)
self.x0.setSingleStep(0.01)
x0_layout.addWidget(self.x0)
y0_label = QLabel("y<sub>0</sub> = ")
y0_label.setFixedWidth(30)
y0_layout.addWidget(y0_label)
self.y0 = QDoubleSpinBox()
self.y0.setValue(45)
self.y0.setMinimum(-1000.0)
self.y0.setMaximum(1000.0)
self.y0.setSingleStep(0.01)
y0_layout.addWidget(self.y0)
# d
d_group_box = QGroupBox("Początkowa odległość pomiędzy wierzchołkami Simplexu:")
d_layout = QHBoxLayout()
d_group_box.setLayout(d_layout)
menu_box.addWidget(d_group_box)
d_label = QLabel("d = ")
d_label.setFixedWidth(30)
d_layout.addWidget(d_label)
self.d = QDoubleSpinBox()
self.d.setMinimum(0)
self.d.setValue(15)
self.d.setSingleStep(0.01)
d_layout.addWidget(self.d)
# alpha
alpha_group_box = QGroupBox("Współczynnik odbicia (\u03B1 > 0):")
alpha_layout = QHBoxLayout()
alpha_group_box.setLayout(alpha_layout)
menu_box.addWidget(alpha_group_box)
alpha_label = QLabel("\u03B1 = ")
alpha_label.setFixedWidth(30)
alpha_layout.addWidget(alpha_label)
self.alpha = QDoubleSpinBox()
self.alpha.setMinimum(0)
self.alpha.setValue(1)
self.alpha.setSingleStep(0.01)
alpha_layout.addWidget(self.alpha)
# beta
beta_group_box = QGroupBox("Współczynnik kontrakcji (0 < \u03B2 < 1):")
beta_layout = QHBoxLayout()
beta_group_box.setLayout(beta_layout)
menu_box.addWidget(beta_group_box)
beta_label = QLabel("\u03B2 = ")
beta_label.setFixedWidth(30)
beta_layout.addWidget(beta_label)
self.beta = QDoubleSpinBox()
self.beta.setMinimum(0)
self.beta.setMaximum(1)
self.beta.setValue(0.5)
self.beta.setSingleStep(0.01)
beta_layout.addWidget(self.beta)
# gamma
gamma_group_box = QGroupBox("Współczynnik ekspansji (\u03B3 > 1):")
gamma_layout = QHBoxLayout()
gamma_group_box.setLayout(gamma_layout)
menu_box.addWidget(gamma_group_box)
gamma_label = QLabel("\u03B3 = ")
gamma_label.setFixedWidth(30)
gamma_layout.addWidget(gamma_label)
self.gamma = QDoubleSpinBox()
self.gamma.setMinimum(1)
self.gamma.setValue(2)
self.gamma.setSingleStep(0.01)
gamma_layout.addWidget(self.gamma)
# epsilon
epsilon_group_box = QGroupBox("Wymagana dokładność:")
epsilon_layout = QHBoxLayout()
epsilon_group_box.setLayout(epsilon_layout)
menu_box.addWidget(epsilon_group_box)
epsilon_label = QLabel("\u03B5 = ")
epsilon_label.setFixedWidth(30)
epsilon_layout.addWidget(epsilon_label)
self.epsilon = QDoubleSpinBox()
self.epsilon.setValue(1)
self.epsilon.setSingleStep(0.01)
epsilon_layout.addWidget(self.epsilon)
make_research_test_group_box = QGroupBox("Zastosuj podane parametry i przeprowadź badanie:")
research_test_box = QVBoxLayout()
make_research_test_group_box.setLayout(research_test_box)
menu_box.addWidget(make_research_test_group_box)
make_research_test_button = QPushButton("Przeprowadź badanie")
make_research_test_button.setCheckable(False)
make_research_test_button.clicked.connect(self.make_research)
research_test_box.addWidget(make_research_test_button)
self.setLayout(layout)
self.setWindowTitle("Metoda Neldera-Meada")
self.showMaximized()
self.setFocus()
self.draw_graph()
systray_icon = QIcon(resource_path("icon.png"))
systray = QSystemTrayIcon(systray_icon, self)
menu = QMenu()
close = QAction("Close", self)
menu.addAction(close)
systray.setContextMenu(menu)
systray.show()
# systray.showMessage("Simplex", "Program powstał w czasie pandemii 2020.", QSystemTrayIcon.Information)
close.triggered.connect(self.close)
def f(self, a, b):
x = a
y = b
return eval(self.f_text.text())
def draw_graph(self):
x_min, x_max, y_min, y_max = self.x0.value(), self.x0.value(), self.y0.value(), self.y0.value()
for simplex in self.steps:
x_arr = [simplex.x1, simplex.x2, simplex.x3]
simplex_x_min = min(x_arr)
simplex_x_max = max(x_arr)
y_arr = [simplex.y1, simplex.y2, simplex.y3]
simplex_y_min = min(y_arr)
simplex_y_max = max(y_arr)
if simplex_x_min < x_min:
x_min = simplex_x_min
if simplex_x_max > x_max:
x_max = simplex_x_max
if simplex_y_min < y_min:
y_min = simplex_y_min
if simplex_y_max > y_max:
y_max = simplex_y_max
x = linspace(x_min-5, x_max+5, 80) # X coordinates
y = linspace(y_min-5, y_max+5, 80) # Y coordinates
X, Y = meshgrid(x, y) # Forming MeshGrid
Z = self.f(X, Y)
self.chart.draw_graph(X, Y, Z) # call Fun for Graph plot
def is_end(self):
epsilon = self.epsilon.value()
if self.steps == 0:
return False
[x1, y1, z1, x2, y2, z2, x3, y3, z3] = self.steps[-1].all_xyz()
if (x1 - x2)*(x1 - x2) + (y1 - y2)*(y1 - y2) > epsilon*epsilon:
return False
elif (x1 - x3)*(x1 - x3) + (y1 - y3)*(y1 - y3) > epsilon*epsilon:
return False
elif (x2 - x3)*(x2 - x3) + (y2 - y3)*(y2 - y3) > epsilon*epsilon:
return False
else:
return True
def make_research(self):
self.current_step = 0
self.steps.clear()
alpha = self.alpha.value()
beta = self.beta.value()
gamma = self.gamma.value()
# 1 # calc first vertices
d = self.d.value()
delta1 = (sqrt(3)+1)/2/sqrt(2)*d
delta2 = (sqrt(3)-1)/2/sqrt(2)*d
x0 = self.x0.value()
y0 = self.y0.value()
x1 = x0 + delta2
y1 = y0 + delta1
x2 = x0 + delta1
y2 = y0 + delta2
# 2 # calc f in each points
self.steps.append(Simplex(x0, y0, self.f(x0, y0), x1, y1, self.f(x1, y1), x2, y2, self.f(x2, y2), "start"))
self.steps[-1].draw(self.chart)
# reflection
while not(self.is_end()):
simplex = self.steps[-1]
# 3 # find h and l
x_h, y_h = simplex.p_h()
f_h = simplex.f_p_h()
x_l, y_l = simplex.p_l()
f_l = simplex.f_p_l()
# 4 # calc cen
cen_x, cen_y = simplex.p_cen()
# 5 # make reflection
ref_x, ref_y = simplex.reflection_point(alpha)
# 6 # calc f_s and f_o
f_s = self.f(cen_x, cen_y)
f_o = self.f(ref_x, ref_y)
# 7 #
if f_o < f_l:
# 7.1 # calc expansion point
exp_x, exp_y = simplex.expansion_point(gamma, alpha)
f_exp = self.f(exp_x, exp_y)
# 7.2 #
if f_exp < f_h:
# 7.2.1 #
self.steps.append(simplex.new_point_instead_p_h(exp_x, exp_y, f_exp, "expansion"))
self.steps[-1].draw(self.chart)
# 7.3 #
else:
# 7.3.1 #
self.steps.append(simplex.new_point_instead_p_h(ref_x, ref_y, f_o, "reflection"))
self.steps[-1].draw(self.chart)
# 7.4 #
continue
# 8 #
else:
# 8.1 #
z_no_zh_1, z_no_zh_2 = simplex.z_without_zh()
if not(f_o >= z_no_zh_1 and f_o >= z_no_zh_2):
self.steps.append(simplex.new_point_instead_p_h(ref_x, ref_y, f_o, "reflection"))
self.steps[-1].draw(self.chart)
continue
# 8.2 #
if f_o < f_h:
# 8.2.1 #
simplex = simplex.new_point_instead_p_h(ref_x, ref_y, f_o, "reflection")
x_h, y_h = simplex.p_h()
f_h = simplex.f_p_h()
x_l, y_l = simplex.p_l()
f_l = simplex.f_p_l()
# 4 # calc cen
cen_x, cen_y = simplex.p_cen()
# 5 # make reflection
ref_x, ref_y = simplex.reflection_point(alpha)
# 6 # calc f_s and f_o
f_s = self.f(cen_x, cen_y)
f_o = self.f(ref_x, ref_y)
# 8.3 #
contr_x, contr_y = simplex.contraction_point(beta)
f_k = self.f(contr_x, contr_y)
# 8.4 #
if f_k >= simplex.f_p_h():
# 8.4.1 #
simplex.reduction(self.f)
# 8.4.2 #
# 8.6 #
continue
# 8.5 #
else:
# 8.5.1 #
self.steps.append(simplex.new_point_instead_p_h(contr_x, contr_y, f_k, "contraction"))
self.steps[-1].draw(self.chart)
continue
self.draw_graph()
self.prepare_steps()
# it works but with wrong result
def old_make_research(self):
self.current_step = 0
self.steps.clear()
alpha = self.alpha.value()
beta = self.beta.value()
gamma = self.gamma.value()
# 1 # calc first vertices
d = self.d.value()
delta1 = (sqrt(3)+1)/2/sqrt(2)*d
delta2 = (sqrt(3)-1)/2/sqrt(2)*d
x0 = self.x0.value()
y0 = self.y0.value()
x1 = x0 + delta2
y1 = y0 + delta1
x2 = x0 + delta1
y2 = y0 + delta2
# 2 # calc f in each points
self.steps.append(Simplex(x0, y0, self.f(x0, y0), x1, y1, self.f(x1, y1), x2, y2, self.f(x2, y2), "start"))
self.steps[-1].draw(self.chart)
# reflection
while not(self.is_end()):
simplex = self.steps[-1]
# 3 # find h and l
x_h, y_h = simplex.p_h()
f_h = simplex.f_p_h()
x_l, y_l = simplex.p_l()
f_l = simplex.f_p_l()
# 4 # calc cen
cen_x, cen_y = simplex.p_cen()
# 5 # make reflection
ref_x, ref_y = simplex.reflection_point(alpha)
# 6 # calc f_s and f_o
f_s = self.f(cen_x, cen_y)
f_o = self.f(ref_x, ref_y)
# 7 #
if f_o < f_l:
# 7.1 # calc expansion point
exp_x, exp_y = simplex.expansion_point(gamma, alpha)
f_exp = self.f(exp_x, exp_y)
# 7.2 #
if f_exp < f_h:
# 7.2.1 #
self.steps.append(simplex.new_point_instead_p_h(exp_x, exp_y, f_exp, "expansion"))
self.steps[-1].draw(self.chart)
# 7.3 #
else:
# 7.3.1 #
self.steps.append(simplex.new_point_instead_p_h(ref_x, ref_y, f_o, "reflection"))
self.steps[-1].draw(self.chart)
# 7.4 #
continue
# 8 #
else:
# 8.1 #
z_no_zh_1, z_no_zh_2 = simplex.z_without_zh()
if not(f_o >= z_no_zh_1 and f_o >= z_no_zh_2):
# 8.2 #
if f_o < f_h:
# 8.2.1 #
simplex = simplex.new_point_instead_p_h(ref_x, ref_y, f_o, "reflection")
# 8.3 #
contr_x, contr_y = simplex.contraction_point(beta)
f_k = self.f(contr_x, contr_y)
# 8.4 #
if f_k >= simplex.f_p_h():
# 8.4.1 #
simplex.reduction(self.f)
# 8.4.2 #
# 8.6 #
if f_o < simplex.f_p_l():
# 8.6.1 #
self.steps.append(simplex.new_point_instead_p_h(ref_x, ref_y, f_o, "reflection"))
self.steps[-1].draw(self.chart)
# 8.5 #
else:
# 8.5.1 #
self.steps.append(simplex.new_point_instead_p_h(contr_x, contr_y, f_k, "contraction"))
self.steps[-1].draw(self.chart)
print(self.steps[-1].all_xyz())
print(self.steps[-1].f_p_l())
self.draw_graph()
self.prepare_steps()
def prepare_steps(self):
self.previous_step_button.setDisabled(False)
self.next_step_button.setDisabled(False)
self.steps_slider.setDisabled(False)
self.steps_slider.setMaximum(len(self.steps)-1)
self.draw_to_step(len(self.steps) - 1)
def draw_to_step(self, step_number):
self.draw_graph()
self.current_step = step_number
self.steps_slider.setValue(step_number)
for n in range(step_number+1):
self.steps[n].draw(self.chart)
self.update_visualisation_form(step_number)
def update_visualisation_form(self, step_number):
last_step_simplex = self.steps[step_number]
self.point_0_x.setText(str(round(last_step_simplex.x1, 2)))
self.point_0_y.setText(str(round(last_step_simplex.y1, 2)))
self.point_0_z.setText(str(round(last_step_simplex.z1, 2)))
self.point_1_x.setText(str(round(last_step_simplex.x2, 2)))
self.point_1_y.setText(str(round(last_step_simplex.y2, 2)))
self.point_1_z.setText(str(round(last_step_simplex.z2, 2)))
self.point_2_x.setText(str(round(last_step_simplex.x3, 2)))
self.point_2_y.setText(str(round(last_step_simplex.y3, 2)))
self.point_2_z.setText(str(round(last_step_simplex.z3, 2)))
self.step_count.setText(str(self.current_step+1))
if last_step_simplex.operation == "start":
self.operation_title.setText("Start")
elif last_step_simplex.operation == "reflection":
self.operation_title.setText("Odbicie")
elif last_step_simplex.operation == "contraction":
self.operation_title.setText("Kontrakcja")
elif last_step_simplex.operation == "expansion":
self.operation_title.setText("Ekspansja")
self.founded_min.setText(str(round(last_step_simplex.f_p_l(), 2)))
if self.current_step == len(self.steps)-1:
self.next_step_button.setDisabled(True)
else:
self.next_step_button.setDisabled(False)
if self.current_step == 0:
self.previous_step_button.setDisabled(True)
else:
self.previous_step_button.setDisabled(False)
def draw_next_step(self):
self.current_step += 1
self.steps_slider.setValue(self.current_step)
self.steps[self.current_step].draw(self.chart)
self.update_visualisation_form(self.current_step)
def draw_previous_step(self):
self.current_step -= 1
self.steps_slider.setValue(self.current_step)
self.draw_graph()
self.draw_to_step(self.current_step)
def draw_by_slider(self):
if self.current_step > self.steps_slider.value():
self.current_step = self.steps_slider.value()
self.draw_to_step(self.current_step)
else:
for n in range(self.current_step+1, self.steps_slider.value()):
self.draw_next_step()
if __name__ == '__main__':
app = QApplication(sys.argv)
simplex_test = WidgetSimplexTest()
simplex_test.show()
sys.exit(app.exec_())