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CompositeViewer Support (view source)
Revision as of 13:43, 3 December 2020
, 13:43, 3 December 2020→General information
* This works by creating a new Compositor instance for each extra view window, and calling its '''update()''' method each frame.
* This works by creating a new Compositor instance for each extra view window, and calling its '''update()''' method each frame.
=== General information ===
=== Background ===
* The CompositeViewer and Viewer should have exactly the same performance characteristics w.r.t managing multiple cameras - as it's exactly the same ViewerBase code underneath that is managing all the threading and graphics rendering.<ref>https://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg22273.html</ref>
* The CompositeViewer and Viewer should have exactly the same performance characteristics w.r.t managing multiple cameras - as it's exactly the same ViewerBase code underneath that is managing all the threading and graphics rendering.<ref>https://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg22273.html</ref>
* CompositeViewer and Viewer share much of their implementation, the only key difference is that Viewer "is a" View, while CompositeViewer has a list of Views. All the event handling, camera manipulator and scene graph setting is done a the View level so has identical API to access. <ref>https://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg17372.html</ref>
* CompositeViewer and Viewer share much of their implementation, the only key difference is that Viewer "is a" View, while CompositeViewer has a list of Views. All the event handling, camera manipulator and scene graph setting is done a the View level so has identical API to access. <ref>https://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg17372.html</ref>
* osgViewer::CompositeViewer runs all of the views synchronously - one frame() call dispatches update, event, cull and draw traversals for all the views. <ref>https://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg18308.html</ref>
* osgViewer::CompositeViewer runs all of the views synchronously - one frame() call dispatches update, event, cull and draw traversals for all the views. <ref>https://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg18308.html</ref>
=== General information ===
* Video showing extra view windows and initial implementation of Canvas View: [http://op59.net/cvcanvas-demo.ogv cvcanvas-demo.ogv]
* Video showing extra view windows and initial implementation of Canvas View: [http://op59.net/cvcanvas-demo.ogv cvcanvas-demo.ogv]
* Use of CompositeViewer is enabled at runtime with: '''--composite-viewer=1'''
* Use of CompositeViewer is enabled at runtime with: '''--composite-viewer=1'''