Translating a QPolygon in a Qpainterpath with round corners

[dennis81]

Hello community,

I am writing a Qt application with a diagram surface.
The diagram contains polygon lines with sharp corners, but I need round ones.
The Line width must be zero, so using a QPen with rounded corners is no option.

Is there a simple algorithm that translates a QPolygon in QPainterpath with rounded corners?

diagram.png


greets,
Dennis

[d_stranz]

If you're drawing your lines with QPainterPath, why not use the QPainterPath "arc" methods to add the rounded corners as arcs? The size of the QRectF occupied by the arc has a width and height equal to the arc radius, so your lines start or end at the endpoint you would have had for square corners minus the radius.

[dennis81]

It works! Thanks!