Help with a visual effect

[SkripT]

In honor of jacek, look what I have achieved using his code I've noticed some strange issues:
1) In my computer it goes very slow. I think that's some issue with QPainter....
2) The movement in the right side is not simetric with the left side . The matrix should work "equally" with both sides, isn't it?


PD: copy the images where the exe file is
PD2: tune the speed with the value passed to QTimer::start

[jacek]

1) In my computer it goes very slow. I think that's some issue with QPainter....

You scale a big image very often --- it must cost. You could try OpenGL or you can record that animation and just replay it.

The movement in the right side is not simetric with the left side . The matrix should work "equally" with both sides, isn't it?

No it shouldn't, it's because of a simple projection that I used here. If you use a bit more complex one it might look better.

[nupul]

Well SkripT, i have been reading this discussion right from the start...i have a suggestion though, have you tried using OpenGL for achieving the effect you want? it doesn't require much extensive GL knowledge...infact you can use the inbuilt rotate function, put it in a for loop and rotate the image by say 2 degs per loop execution to give you the effect of the moving page!! you as it is know the co-ordinates, just pass them...and opengl will take care of the rest! and ya, it won't slow your system....It'll move as a breeeeeeeeze!!!



Nupul

[SkripT]

Thanks for the suggestion Nupul. In the beggining, I thought that QPainter was enough to achieve the effect but seems that it's a bit slow . Next step: OpenGL but that's a new story...

[nupul]

Thanks for the suggestion Nupul. In the beggining, I thought that QPainter was enough to achieve the effect but seems that it's a bit slow . Next step: OpenGL but that's a new story...

Let's say a new chapter to your story....so you can keep 'flipping the pages' to see your progress

[SkripT]

Let's say a new chapter to your story....so you can keep 'flipping the pages' to see your progress

good joke Nupul