Todd Miller wrote:
Yes. What I most want to do is a 50000 point drawlines, similar to what
you profiled. Friends are fine too.
Actually, it was someone else that did the profiling, but here is a
sample, about as simple as I could make it.
It draws an N point line and M points. At the moment, it is using
Numeric for the points, and numarray for the lines. Numeric is MUCH
faster (which is the whole point of this discussion). Otherwise, it
takes about the same amount of time to draw the lines as the points.
Another note: if use the tolist() method in the numarray first, it's
much faster also:
dc.DrawLines(LinesPoints.tolist())
Obviously, the tolist method is much faster than wxPython's sequence
methods, as would be expected.
I'm going to send a note to Robin Dunn about this as well, and see what
he thinks.
-Chris
--
Christopher Barker, Ph.D.
Oceanographer
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Chris.Barker@noaa.gov
#!/usr/bin/env python2.3
import wx
import numarray
from numarray import random_array
import RandomArray # the Numeric version
import time
NumLinePoints = 5000
NumPointPoints = 5000
## Make some random data to draw things with.
MaxX = 500
LinesPoints = random_array.randint(1, MaxX, (NumLinePoints,2) )
#PointsPoints = random_array.randint(1, MaxX, (NumPointPoints,2) )
PointsPoints = RandomArray.randint(1, MaxX, (NumPointPoints,2) ) # Numeric
class TestFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, -1, "DrawLines Test",
wx.DefaultPosition,
size=(500,500),
style=wx.DEFAULT_FRAME_STYLE | wx.NO_FULL_REPAINT_ON_RESIZE)
## Set up the MenuBar
MenuBar = wx.MenuBar()
file_menu = wx.Menu()
ID_EXIT_MENU = wx.NewId()
file_menu.Append(ID_EXIT_MENU, "E&xit","Terminate the program")
wx.EVT_MENU(self, ID_EXIT_MENU, self.OnQuit)
MenuBar.Append(file_menu, "&File")
draw_menu = wx.Menu()
ID_DRAW_MENU = wx.NewId()
draw_menu.Append(ID_DRAW_MENU, "&ReDraw","DrawAgain")
wx.EVT_MENU(self, ID_DRAW_MENU,self.ReDraw)
MenuBar.Append(draw_menu, "&Draw")
self.SetMenuBar(MenuBar)
wx.EVT_PAINT(self, self.OnPaint)
def OnPaint(self,event):
dc = wx.PaintDC(self)
dc.SetBackground( wx.Brush("White") )
dc.Clear()
self.DrawLines(dc)
self.DrawPoints(dc)
def ReDraw(self, event = None):
dc = wx.ClientDC(self)
dc.SetBackground( wx.Brush("White") )
dc.Clear()
self.DrawLines(dc)
self.DrawPoints(dc)
def DrawLines(self, dc):
dc.BeginDrawing()
dc.SetPen(wx.Pen('Black', 2))
start = time.clock()
#dc.DrawLines(LinesPoints.tolist())
dc.DrawLines(LinesPoints)
print "DrawLines Call took %f seconds"%(time.clock() - start)
dc.EndDrawing()
def DrawPoints(self, dc):
dc.BeginDrawing()
dc.SetPen(wx.Pen('Red', 2))
start = time.clock()
dc.DrawPointList(PointsPoints)
print "DrawPointList Call took %f seconds"%(time.clock() - start)
dc.EndDrawing()
def OnQuit(self,event):
self.Close(True)
class DemoApp(wx.App):
def OnInit(self):
frame = TestFrame()
frame.Show(True)
self.SetTopWindow(frame)
return True
if __name__ == "__main__":
app = DemoApp(0)
app.MainLoop()
