Category "draw"

Drawing with cv::circle's over a line Iterator in c++ with openCV

I'm creating an iterator line, which I pass through a for() and draw with cv::circle points. So far so good, form a line drawing, by the iterator's line points.

How to recalculate the coordinates of a point after scaling and rotation?

I have the coordinates of 6 points in an image (170.01954650878906, 216.98866271972656) (201.3812255859375, 109.42137145996094) (115.70114135742188, 210.427291