[clam-devel] Sample by Sample Processing in Network Editor

[David Garcia Garzon]

A Dijous, 21 de Desembre de 2006 21:06, Xavier Amatriain va escriure:

> > david asks: and how many times NetworkCanvas::draw gets called?
>
> I guess you mean NetworkCanvas::paint, right? That is called between 25
> and 50 times for the different runs I have and is way up in the
> profiler. Functions like PortWire::draw are called anywhere between 3000
> to 12000 times, and QPainter::drawEllipse double than that.

Of course, Xavi, those networks you are drawing are really impressive.

http://www.create.ucsb.edu/xavier/public_fotos/AlloNetworkEditor/img006.jpeg.html

I mean NetworkCanvas::paint executions tells you how many times the canvas has 
been redrawn. But you have wired around 120 connections (~25*120=3000) And 
the processings you are drawing have the double of ports (the drawEllipse 
thing).

I don't think there is much we can do about: clipping the drawing area and 
drawing just invalidation areas. Even we could migrate to the QGraphicsView 
framework which already incorporate this. Maybe in occasions you could be 
able to build composites or buses. In fact buses could be a solution also for 
the stream efficiecy matter.

-- 
David García Garzón <david.garcia at removespam.iua.upf.es>
Phone: 034 93 542 21 99
Music Technology Group, Institut Universitari de l'Audiovisual
Universitat Pompeu Fabra

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