When rotating an image about its center (code below) the corers get cut off. It
needs to just be a little wider and a little taller. Is there a calculation
already in Qt?
How can I find the proper size that out should be, and where to place the image
for drawImage within the new bounding box?
QImage rotate(const QImage &in, qreal degrees) {
QImage out = QImage(in.size(), in.format());
QPainter painter;
painter.begin(&out);
painter.translate(QPoint(out.width()/2, out.height()/2));
painter.rotate(degrees);
painter.translate(QPoint(-out.width()/2, -out.height()/2));
painter.drawImage(0,0, in);
painter.end();
return out;
}
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