QPainterPath: strokeStart, strokeEnd

[pic.spencer]

I have a QPainterPath composed with arcTo, cubicTo, etc and maybe closed, maybe not. I want to stroke a section say from strokeStart at 0.2 to strokeEnd at 0.7. Can I do this?

[pic.spencer]

Something like the following is probably my best option:

auto start = 0.2f;
auto end = 0.8f;
auto resolution = 10;
auto step = (end - start) / resolution;
auto width = 8;
        
QPainterPath masterPath = QPainterPath();
masterPath.lineTo(boundingRect().size().width(), boundingRect().size().height());
painter->strokePath(masterPath, QPen(Qt::black, width));
    
QPainterPath shapePath = QPainterPath();
shapePath.moveTo(masterPath.pointAtPercent(start));
        
for (auto i = 0; i < resolution; i ++)
{
     start += step;
     shapePath.lineTo(masterPath.pointAtPercent(start));
}
painter->strokePath(shapePath, QPen(Qt::cyan, width));