How to accelerate the running speed of the qt program?

**mvuori** · 19th June 2011, 16:37

I don't know, but I'd try and see what happens when making a copy of the nodes and change scale of the items "offline" piNodeCopy[i].setScale and then replacing the node set in the scene.

**superwave** · 19th June 2011, 17:56

Originally Posted by mvuori

I don't know, but I'd try and see what happens when making a copy of the nodes and change scale of the items "offline" piNodeCopy[i].setScale and then replacing the node set in the scene.

This is the same, just like replace the items on the scene.

Actually, it will also take about 30 minutes to show the items on the scene for the first time.

**SixDegrees** · 19th June 2011, 22:41

There are several flags that can be used to optimize graphicsView/Scene; I don't have access to the docs at the moment, but they're worth playing with. If you don't need to do things like collision detection, for instance, you can turn it off and save a good deal of computation.There's a decent discussion here of various techniques; read through the comments as well.