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Under the hood of Canvas: Difference between revisions
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To selectively remove data from a Canvas, just put it into a separate top-level group - and use .hide() to make it invisible or .clear() to clear it out. | |||
Note that you can also use these two in combination to selectively update those data structures - which helps reduce the updating overhead, i.e. no unnecessary reallocation taking place. | |||
In summary, the Canvas system really is a scenegraph - so if you have something that you'd like to be able to hide/show, clear or change selectively, just put it into a separate group and use that group as the "handle" to deal with the whole shebang (it really is a osg::Group under the hood, i.e. an osg::Transform IIRC, which is a child class inheriting from ::Group)<ref>{{cite web | |||
|url = https://forum.flightgear.org/viewtopic.php?p=297688#p297688 | |||
|title = <nowiki> Re: Nasal must go </nowiki> | |||
|author = <nowiki> Hooray </nowiki> | |||
|date = Oct 29th, 2016 | |||
|added = Oct 29th, 2016 | |||
|script_version = 0.40 | |||
}}</ref> | |||
== Related == | == Related == | ||
== References == | == References == | ||
{{Appendix}} | {{Appendix}} | ||