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OpenSceneGraph/include/osgViewer
Robert Osfield 1beedce6fc From Jean-Sebastien Guay, "For a long time now I've wanted to be able to add custom values into the stats handler's graph. Here is my proposal of how I'd do this. It's surely not perfect and I'm open to suggestions, but I've already made more changes than I wanted to in order to be able to implement this...
The user calls statsHandler->addUserStatsLine() providing:

- the label they want for that line in the graph
- the text and bar colors they want in the graph
- the stats names they want queried (one for time taken, one for begin and one for end time) and a few settings for how these will be displayed.

Then all they have to do is call viewer->getViewerStats()->setAttribute(framenumber, name, value) for their three attributes each frame and they'll have their stats in the graph.

They can also give only a time taken attribute (or some other numerical value they want printed, which can be averaged or not), or only begin+end attributes, and the graph will accordingly display only the (average or not) numerical value or only the bars.

Along the way I cleaned up the existing code a bit:

* Each time the setUpScene() or createCameraTimeStats() methods added a line to the graph, they did pretty much the same thing, so I moved that into a separate method called createTimeStatsLine() which is called by setUpScene() and createCameraTimeStats().

* I moved the font, characterSize, startBlocks and leftPos variables to member variables, since they were being passed around everywhere but were set only once at the beginning.

* The geode on which stats lines are added is also kept in a member variable, and createCameraTimeStats() adds the per-camera lines to this geode instead of returning a new Group with a new Geode. This further reduces the number of variables the createCameraTimeStats() method needs as input.

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2010-11-03 10:04:34 +00:00
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