On 09/28/2011 11:15 AM, ext Uwe Rathmann wrote: > On Wed, 28 Sep 2011 07:44:17 +0000, jens.bache-wiig wrote: > >> I would not be too concerned as we will make it possible to embed Qt >> Quick inside normal QWidgets, as is already fairly easy to do with Qt >> Quick 1. > > I'm worried about curves consisting of millions of points. They need to > be mapped to target coordinates and painted afterwords each time the plot > needs to be refreshed. Is it possible to pass these points via an HTML > based API with an acceptable performance ? > > And what about oscilloscopes ( a common use case of QwtPlot ), that can > only be implemented in an acceptable performance today with painting > incrementally ( painting new points on top instead of repainting > everything from scratch ) ? > >> This should be ideal for graph plotting within Qt Quick as is >> already demonstrated by the examples. > > I checked a Qt 4.8 snapshot, but was not able to identify what example it > is ? > > Uwe
You can always use a QSGItem representing a QImage that you dynamically update and upload to a texture for cases where you want to do QPainter or custom rendering. -- Samuel _______________________________________________ Qt5-feedback mailing list [email protected] http://lists.qt.nokia.com/mailman/listinfo/qt5-feedback
