I’m working with QT in order to create a selection path. But now I would like to invert it, like the photoshop tool you know.
I used the subtracted method to manage to get the invert selection BUT I got only one path. I would like to splite this path into small path/polygons since I use a personal class to print the selections.
I know the methods ToFillPolygons & ToSubpathPolygons exist but they don’t give me what I need.
Here is few drawing to understand what I need:
First, the selections the user do in black: First Selection
Then, in red, the result of the subtracted method: Inverted selection
And here is what I’m looking for: How can I get only the 2 red polygons like this
In a perfect world I would like to get 5 polygons because I cannot deal with hole inside my polygons for the moment, I mean I cannot remove the line which connect outer and inner polygons and I have something like this: ugly result.
Now you can understand why I cannot use ToFillPolygons & ToSubpathPolygons method which give me this following result
Thanks for your help
Nobody has an idea?
It's very important and this issue drives me crazy
You could use operator - like this:
QPainterPath p1; p1.addRect(0.0, 0.0, 100.0, 150.0); QVector<QPointF> points; points << QPointF(60.0, 30.0) << QPointF(100.0, 30.0) << QPointF(100.0, 90.0) << QPointF(0.0, 90.0) << QPointF(0.0, 60.0) << QPointF(60.0, 60.0) << QPointF(60.0, 30.0); QPainterPath p2; p2.addPolygon(points); p2.addRect(20.0, 110.0, 60.0, 20.0); QPainterPath p3 = p1 - p2;
Sorry to disturb you but if you are free then please give me answer of below question
I am newbie to this Qt framework.