canvas.draw() is slow in animation, I have succeed in replacing it with
canvas.restore_region(). And it is wonderful.
However, in the following, I fail to make it work the same as
canvas.draw().The following code can work. And creat a dynamic line. When I
work with the statement "#self.canvas.draw()" .The result is exactly what I
want.
However, canvas.restore_region() fail to do as canvas.draw() here. The
problem is when I refresh the line, the previous line is not clear as I want
to.Could anyone help me? Thanks.
import wx
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg
from matplotlib.figure import Figure
class Temp:
def __init__(self):
app = wx.PySimpleApp()
frame=wx.Frame(None,size=(700,500))
frame.Show(True)
##Creat figure , canvas , axe.
fig = Figure((8.8,6),facecolor='w')
self.canvas = FigureCanvasWxAgg(frame, -1, fig)
self.ax=fig.add_axes([0.1,0.15,0.7,0.7],axisbg='#dedff7')
##Get background for OnTimer function.
self.background=self.canvas.copy_from_bbox(self.ax.bbox)
##Create line on axe.
self.y=[1,1]
self.x=[0,10]
self.line,=self.ax.plot(self.x,self.y)
##Bind timer to refresh line
timer=wx.Timer()
timer.Bind(wx.EVT_TIMER, self.OnTimer, timer)
timer.Start(1000)
app.MainLoop()
def OnTimer(self,event):
self.y=[self.y[0]+0.005,self.y[1]+0.005]
self.line.set_data(self.x,self.y)
self.canvas.restore_region(self.background)
self.ax.draw_artist(self.line)
self.canvas.blit(self.ax.bbox)
self.canvas.gui_repaint()
#self.canvas.draw()
Temp()
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