Thank you. After some experimentation, I discovered I was looking at a
combination of minor coding errors and an IDLE interaction--if I start
the script outside of IDLE, it now works. If you are at all interested,
I've attached my experimental scripts. Beginner question: what are you
using as a debugging enviroment?
Randolph
Hartmut Seichter wrote:
Its hard to guess as you don't provide the whole example - all
self.Refresh are commented out and its not clear if you use the wxApp
OnIdle message pump for updates. The other example (osgviewerWX.py) in
the repository might give you some pointers.
# -*- coding: us-ascii -*-
# generated by wxGlade 0.6.3 on Sun Nov 16 18:44:07 2008
import wx
import OSGLumView
# begin wxGlade: dependencies
# end wxGlade
# begin wxGlade: extracode
# end wxGlade
class LumViewer(wx.Panel):
def __init__(self, *args, **kwds):
# begin wxGlade: LumViewer.__init__
kwds["style"] = wx.TAB_TRAVERSAL
wx.Panel.__init__(self, *args, **kwds)
self.viewer = OSGLumView.OSGLumView(self, -1)
self.__set_properties()
self.__do_layout()
# end wxGlade
self.Parent.storeCanvas(self.viewer)
def __set_properties(self):
# begin wxGlade: LumViewer.__set_properties
pass
# end wxGlade
def __do_layout(self):
# begin wxGlade: LumViewer.__do_layout
sizer_2 = wx.BoxSizer(wx.VERTICAL)
sizer_2.Add(self.viewer, 1, wx.EXPAND, 0)
self.SetSizer(sizer_2)
sizer_2.Fit(self)
# end wxGlade
def AddGeom(self,geom):
self.viewer.AddGeom(geom)
# end of class LumViewer
import osgDB
class testFrame(wx.Frame):
def __init__(self, parent):
wx.Frame.__init__(self, parent, title = "OSG Test Frame")
self.canvas = None
self.Bind(wx.EVT_IDLE, self.onIdle)
self.lum_menubar = wx.MenuBar()
wxglade_tmp_menu = wx.Menu()
wxglade_tmp_menu.Append(wx.ID_OPEN, "Open...", "Ctrl+O", wx.ITEM_NORMAL)
wxglade_tmp_menu.Append(wx.ID_EXIT, "Exit", "", wx.ITEM_NORMAL)
self.lum_menubar.Append(wxglade_tmp_menu, "File")
self.SetMenuBar(self.lum_menubar)
self.Bind(wx.EVT_MENU, self.onFileOpen, id=wx.ID_OPEN)
self.Bind(wx.EVT_MENU, self.onFileExit, id=wx.ID_EXIT)
self.lumviewer = LumViewer(self)
def onFileExit(self, event): # wxGlade: LumEdit.<event_handler>
self.Close()
def onFileOpen(self, event): # wxGlade: LumEdit.<event_handler>
dlg = wx.FileDialog(
self, style = wx.FD_OPEN,
message = "Model File")
if dlg.ShowModal() == wx.ID_OK:
try:
fn = dlg.GetPath().encode('ascii', 'replace')
geom = osgDB.readNodeFile(fn)
self.lumviewer.AddGeom(geom)
except ValueError:
pass # Handle the can't read error here
dlg.Destroy()
def onIdle(self,event):
if self.canvas:
self.canvas.Refresh(eraseBackground = False)
def storeCanvas(self,c):
self.canvas = c
if __name__ == '__main__':
app = wx.PySimpleApp()
frame = testFrame(None)
frame.Show(True)
app.MainLoop()
#!/usr/bin/env python
# import wxWidgets stuff
import wx
import wx.glcanvas
# import OpenSceneGraph wrapper
import osg
import osgUtil
import osgDB
class OSGLumView(wx.glcanvas.GLCanvas):
def __init__(self,parent,id):
wx.glcanvas.GLCanvas.__init__(self,parent,id)
sv = self.sceneview = osgUtil.SceneView()
self.rootnode = osg.MatrixTransformRef(osg.MatrixTransform())
sv.setSceneData(self.rootnode.get())
x,y = self.GetClientSize()
self.oldX = 0
self.oldY = 0
sv.setDefaults()
self.Bind(wx.EVT_SIZE, self.OnSize)
self.Bind(wx.EVT_PAINT, self.OnPaint)
self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
self.Bind(wx.EVT_ENTER_WINDOW, self.OnEnterWindow)
self.Bind(wx.EVT_MOUSE_EVENTS, self.OnMouse)
sv.init()
def AddGeom(self, geom):
self.rootnode.addChild(geom)
# Calculate bounds & set the view matrix
self.Refresh(eraseBackground = False)
def OnMouse(self, evt):
if ((evt.Dragging() == True) and (evt.LeftIsDown() == True)):
x = evt.GetX() - self.oldY
y = evt.GetY() - self.oldY
self.sceneview.setViewMatrixAsLookAt(
osg.Vec3f(0,y,x), osg.Vec3f(0,0,0), osg.Vec3f(0,1,0))
self.Refresh(eraseBackground = False)
self.oldX = evt.GetX()
self.oldY = evt.GetY()
if ((evt.Dragging() == True) and (evt.RightIsDown() == True)) :
m = self.rootnode.getMatrix()
x,y = self.GetClientSize()
rot = osg.Matrixd()
rot.makeRotate(self.oldX - evt.GetX(), osg.Vec3f(1,0,0))
m.postMult(rot)
self.Refresh(False)
self.oldX = evt.GetX()
self.oldY = evt.GetY()
def Clear(self):
self.rootnode.removeChild(0,self.rootnode.getNumChildren())
self.Refresh(eraseBackground = False)
def OnEnterWindow(self, evt):
self.SetFocus()
def OnEraseBackground(self, evt):
pass
def OnSize(self, evt):
x,y = self.GetClientSize()
self.SetCurrent()
self.sceneview.setViewport(0,0,x,y)
evt.Skip()
def OnPaint(self, evt):
if (0 == self.GetContext()) :
return
dc = wx.PaintDC(self)
self.SetCurrent()
self.sceneview.update()
self.sceneview.cull()
self.sceneview.draw()
self.SwapBuffers()
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