converting basic tutorial 8

Thought i'd be community spirited and try and help converting tutorials on the wiki. I've converted basic tutorial 8 (dual scenemanagers) to python, and it all seems to work, apart from the fact that the skyboxes do not show up when 2 viewports are on-screen at once. It all seems fine, I can see 2 instances of the framerate overlay, and I tried setting a different background color for the second viewport which works fine. Just no geometry or skyboxes. When I switch back to one viewport the skybox re-appears. Heres the code if anyone can help (should just run if you paste into a new file in the demos folder), once it works I'll update the ole wiki!

keys:
V switches to dual viewports mode
C should swap the sceneManagers but doesn't seem to work


import ogre.renderer.OGRE as ogre
import ogre.io.OIS as OIS
import SampleFramework as sf

CAMERA_NAME = "SceneCamera"

def setupViewport(RenderWindow, SceneManager):
RenderWindow.removeAllViewports()
cam = SceneManager.getCamera(CAMERA_NAME)
vp = RenderWindow.addViewport(cam)
vp.setBackgroundColour((0,0,0))
cam.setAspectRatio(vp.getActualWidth() / vp.getActualHeight())

def dualViewport(win, primary, secondary):
secondary.setSkyDome(True, "Examples/CloudySky", 5, 8)
win.removeAllViewports()
cam = primary.getCamera(CAMERA_NAME)
vp = win.addViewport(cam, 0, 0, 0, 0.5, 1)
vp.setBackgroundColour((0,0,0))
cam.setAspectRatio(vp.getActualWidth() / vp.getActualHeight())
cam = secondary.getCamera(CAMERA_NAME)
vp = win.addViewport(cam, 1, 0.5, 0, 0.5, 1)
vp.setBackgroundColour((1,0,0))
cam.setAspectRatio(vp.getActualWidth() / vp.getActualHeight())

class SMTutorialListener(sf.FrameListener):
def __init__(self, win, primary, secondary):
sf.FrameListener.__init__(self, win, primary.getCamera(CAMERA_NAME), True, False)
self.mContinue = True
self.mDual = False
self.mWindow = win
self.mPrimary = primary
self.mSecondary = secondary

def frameStarted(self, frameEvent):
return sf.FrameListener.frameStarted(self, frameEvent)

def _processUnbufferedKeyInput(self, frameEvent):
if self.Keyboard.isKeyDown(OIS.KC_V) and self.timeUntilNextToggle <= 0:
self.mDual = not self.mDual
if self.mDual:
dualViewport(self.mWindow, self.mPrimary, self.mSecondary)
else:
setupViewport(self.mWindow, self.mPrimary)

if self.Keyboard.isKeyDown(OIS.KC_C):
self.swap(self.mPrimary, self.mSecondary)
if self.mDual:
dualViewport(self.mWindow, self.mPrimary, self.mSecondary)
else:
setupViewport(self.mWindow, self.mPrimary)

return sf.FrameListener._processUnbufferedKeyInput(self, frameEvent)

def swap(self, first, second):
tmp = first
first = second
second = tmp

class SMTutorialApplication(sf.Application):
def __init__(self):
sf.Application.__init__(self)

def _chooseSceneManager(self):
self.mPrimary = ogre.Root.getSingleton().createSceneManager(ogre.ST_GENERIC, "primary")
self.mSecondary = ogre.Root.getSingleton().createSceneManager(ogre.ST_GENERIC, "secondary")

def _createCamera(self):
self.mPrimary.createCamera(CAMERA_NAME)
self.mSecondary.createCamera(CAMERA_NAME)

def _createViewports(self):
setupViewport(self.renderWindow, self.mPrimary)

def _createScene(self):
self.mPrimary.setSkyBox(True, "Examples/SpaceSkyBox")
self.mSecondary.setSkyDome(True, "Examples/CloudySky", 5, 8)

def _createFrameListener(self):
self.mFrameListener = SMTutorialListener(self.renderWindow, self.mPrimary, self.mSecondary);
self.mFrameListener.showDebugOverlay(True)
ogre.Root.getSingleton().addFrameListener(self.mFrameListener)


if __name__ == '__main__':
app = SMTutorialApplication()
app.go()


Try:

cam.setAspectRatio(float(vp.getActualWidth()) / float(vp.getActualHeight()))


Also you could maybe add a time toggle to the viewport switch:

if self.Keyboard.isKeyDown(OIS.KC_V) and self.timeUntilNextToggle <= 0:
self.timeUntilNextToggle = 1
..

And if your wiking this you should make sure the demo shuts down cleanly.

thanks dermont,

that fixes the problem. Its strange, on my home pc it does shut down cleanly, but having just tried it on another pc i get an error on close. Will sort that before wikiing

ok, its done and seems to be working perfectly now, yippee! haven't noticed any errors now ( overridden the __del__ method to get rid of both sceneManagers, and the C key now swaps them properly)

will update the wiki sometime today, and perhaps crack on with another