How to create Pie object?

TomNow99

Hello,

I would like to check if the QPoint is inside a pie, which I create using QPainter:

drawPie(int x, int y, int width, int height, int startAngle, int spanAngle)

So I would like something like:

QPie pie(int x, int y, int width, int height, int startAngle, int spanAngle);

if(pie.contains(myPoint))
{

}

Is a simple way to do that?

J.Hilk

@TomNow99 well it still holds true, just that you have to 2 additional boundary checks.

I don't have those at hand, from the top of my head. But this stack overflow thread has it:
https://stackoverflow.com/a/51896645

J.Hilk

I would like to check if the QPoint is inside a pi

you know, that's basic Pythagoras

(x - centerX) * (x - centerX) + (y - centerY)*(y - centerY) < radius *radius

TomNow99

@J-Hilk You are right, but my Pie can be only half / quarter circle, so this is not basic Pythagoras.

Look at the picture:

distance between red Point and the center of the circle is very small, but that point isn't inside pie.

J.Hilk

@TomNow99 well it still holds true, just that you have to 2 additional boundary checks.

I don't have those at hand, from the top of my head. But this stack overflow thread has it:
https://stackoverflow.com/a/51896645