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graph_viewer.py
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graph_viewer.py
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from PyQt5 import QtCore, QtGui, QtWidgets
from platform_interface import PlatformInterface
import pyqtgraph
import sys
import time
import threading
class Viewer():
def __init__(self):
super().__init__()
self.update_frame = 0
self.color_wheel = ['r', 'g', 'c', 'y']
pyqtgraph.setConfigOption('background', QtGui.QColor(42, 42, 42))
pyqtgraph.setConfigOption('foreground', 'w')
self.graph_widget = pyqtgraph.PlotWidget(enableMenu=False)
self.graph_widget.getPlotItem().hideAxis('bottom')
self.graph_widget.setMouseEnabled(x=False, y=False)
self.x = list(range(4))
self.y = list(range(4))
self.data_line = list(range(4))
for i in range(0, 4):
self.x[i] = list(range(250))
self.y[i] = list(range(250))
self.data_line[i] = pyqtgraph.PlotCurveItem(self.x[i], self.y[i], pen=pyqtgraph.mkPen(self.color_wheel[i % 4], width=2))
self.graph_widget.addItem(self.data_line[i])
def start_plot(self, platform_interface, panel):
self.offset = panel * 4
self.platform_interface = platform_interface
self.timer = QtCore.QTimer()
self.timer.setInterval(1)
self.timer.timeout.connect(self.update_plot_data)
self.timer.start()
def stop_plot(self):
self.timer.stop()
def update_plot_data(self):
if self.platform_interface is not None:
for i in range(0, 4):
self.x[i] = self.x[i][1:]
self.x[i].append(time.time())
self.y[i] = self.y[i][1:]
self.y[i].append(self.platform_interface.panel_data[i + self.offset])
self.update_frame += 1
if (self.update_frame % 4) == 0:
for i in range(0, 4):
self.data_line[i].setData(self.x[i], self.y[i])
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
viewer = Viewer()
sys.exit(app.exec_())