[Qt-interest] Get the length of a QPainterPath at paramater t?

[Daniel Price]

I'm using QPainterPath with beziers for drawing a graph and need to get the graph data at a specific 'slice' along the x-axis.

QPainterPath::pointAtPercent expects its argument to be relative to the length of the path, not the x-axis.

QPainterPath::percentAtLength() can get this but then there is no function to find the length of a path at a specific point in the drawing. How can I find the percentage or length of the path at a specific slice in the graph? Is it possible?


Daniel Price


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