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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