Hi,
Looks like there is a bug there. The calculated bounding rectangles (used
by the GraphicsView system for repaints etc) aren't taking into account the
line width.
If you edit the boundingRect method of ROI.py to be:
def boundingRect(self):
pw = 0.5*self.currentPen.width()
return QtCore.QRectF(-0.5*pw, -0.5*pw, pw+self.state['size'][0], pw+
self.state['size'][1])
then it seems to work. Unfortunately, you'll also need to modify any other
ROI subclass (PolyLineROI etc) which override boundingRect() in a similar
manner.
Patrick
On Wednesday, 11 March 2020 06:18:34 UTC+10:30, yunsong zhao wrote:
>
> Hi there,
>
> I get a problem when using the ROI.
> If I set the width of the ROI's pen bigger than 1, it does not refresh
> correctly when moved, as is shown in the following image .
> [image: img.png]
>
>
>
>
>
>
>
>
>
>
> To get the image, I modified the image analysis example as follows:
>
> roi = pg.ROI([-8, 14], [6, 5])
> roi.addScaleHandle([0.5, 1], [0.5, 0.5])
> roi.addScaleHandle([0, 0.5], [0.5, 0.5])
> roi.setPen("r", width=10) # I added this line
> p1.addItem(roi)
>
> roi.setZValue(10)
>
> Thanks!
>
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