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.
H
R Fritz wrote:
I've the beginnings of a simple light-fixture modeling component in
wxPython and I am trying to use osgswig (2.2.0.1 version) as a base.
I've started out by copying the file loading example which uses
osgUtil.SceneView(). The code successfully loads the geometry of a
lighting fixture (considering that this is done with readNodeFile
that's not terribly surprising). Unfortunately, thereafter I can't
maneuver the view with the mouse. Sometimes, I can't even find the
fixture model. I suspect I'm doing something dumb. My code--almost
the sample code--is attached--any ideas? (Getting a newer version of
osgswig would be nice, but as I've written here, I've run into build
problems, and I would rather not spend the time chasing them down.)
Randolph
#!/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):
print "AddGeom"
self.rootnode.addChild(geom)
# self.Refresh(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(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(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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--
Hartmut Seichter, PhD (HKU), Dipl-Ing.(BUW), Postdoctoral Fellow, HITLabNZ
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