python Restore camera settings after a flipbook

[Deivid3D]

Hi everyone!

 

I'm starting to get into Python 2.7 for Houdini Indie (17.5) before jumping into Houdini 18 with Python 3, and I've been working in a flipbook tool until now everything is being okay but now I've found that I can't recover the camera settings/flipbook settings after generating the MPlay to maintain the user settings after applying the script. I've been trying to use the 'hou.GeometryViewportCamera.stash()'  to create a copy of the settings but I'm not sure how to use it and where should I recover these settings.

Also when I try to use it I get this error: 

'TypeError: unbound method setDefaultCamera() must be called with GeometryViewport instance as first argument (got nothing instead)'

 

I've created a simplified version of the script that I'll be attaching down below:

Quote

import hou

desktop = hou.ui.curDesktop()
scene_viewer = desktop.paneTabOfType(hou.paneTabType.SceneViewer)
viewport = scene_viewer.curViewport()

#Select Camera
cameras = hou.nodeType(hou.objNodeTypeCategory(),"cam").instances()
selected_cam = cameras[0].path()

#Set Camera comment parameter
comment = "Test Comment"

camera = hou.node(str(selected_cam))

#COPY THE CAMERA SETTINGS HERE<---------------------------------------
modify_cam = hou.GeometryViewport.setDefaultCamera()

#Modify some parameters
camera.parm("vcomment").set(comment)
camera.parm("resx").set(1920)
camera.parm("resy").set(1080)
hou.GeometryViewport.setCamera(viewport, selected_cam)

#Jump to Flipbook
flipbook_options = scene_viewer.flipbookSettings().stash()

flipbook_options.frameRange( (1001, 1050) )
flipbook_options.outputToMPlay(True)
#flipbook_options.cropOutMaskOverlay(False)
scene_viewer.flipbook(scene_viewer.curViewport(), flipbook_options)

#Recover Flipbook and camera settings
hou.GeometryViewportCamera.useDefaultCamera()
hou.GeometryViewport.setCamera(viewport, selected_cam)

 

If someone has any advice or idea of how would be the good approaching intro this, I'll bee really thankful.

 

Thanks in advance to everyone.

[underscoreus]

Hey,

Don't know if this is the most efficient method (someone please correct me if there is a better way) but maybe have a look at the hou.appendSessionModuleSource? (https://www.sidefx.com/docs/houdini/hom/hou/appendSessionModuleSource.html)

It's made to store variables in the HIP file itself. It's at least what I use when I need to store stuff like that. Essentially stores it as an environment variable that you can later call from anywhere in the HIP file with hou.session.variablename.

[malexander]

useDefaultCamera and setCamera must be called on a GeometryViewport object. You have one in your script, 'viewport'. You can stash the default camera to a python object using:

prev_view = viewport.defaultCamera().stash()
// set your camera and flipbook
viewport.setDefaultCamera(prev_view)