Thanks for this. I was just getting ready to do something very similar. On Friday, February 23, 2018 at 2:38:17 AM UTC-5, Friedrich wrote: > > as it turns out, i really was close. instead of taking the points from the > state, the handle postions needed to be mapped to parent. i adjusted the > MWE for those who are interested: > > import pyqtgraph as pg > > def roiMove(): > """Print the coordinates of the ROI.""" > pts = roi.getSceneHandlePositions() > print([roi.mapSceneToParent(pt[1]) for pt in pts]) > > win = pg.GraphicsWindow() > vb = win.addViewBox() > # roi in triangle shape > roi = pg.PolyLineROI([[1, 2], [1.5, 2], [1, 0]], > closed=True, > pen=pg.mkPen(color=(0, 201, 255, 255), width=3) > ) > > # connect to printing function when moving something > roi.sigRegionChanged.connect(roiMove) > vb.addItem(roi) > vb.setXRange(-5, 5) > vb.setYRange(-5, 5) > pg.QtGui.QApplication.exec_() > Code hier eingeben... > > >
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