I want to draw a polyline using QPainter. The line should change color dynamically according to point coordinates.
In order to achieve this, I'd like to subclass QGradientin order to obtain a QFunctionGradient where I can set a std::function<QColor(QPointF)> that gives me the color of a point given its coordinates.
So, at first, how It's possibile to draw a polyline with QPainter and color it according to a QGradient?
And it's possible to subclass QPainter and use this subclass inside QBrush?
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