Hello, I am implementing a curve widget in which the user can drag the curve by mouse move operations. The problem is the returned x dimension is not accurate in plot coordinates, there is no problem in the mapped y coordinate. There is always a shift or gap in the x dimension of the selected point(I guess this gap is about the width of the y-Axis ruler), please see the problem and the gap in my image attachment. Also I attach the code below.
I am using QwtPlotPicker::getInvTransform as,
Qt Code:
{ ///////// } { ////////// } { myCurvePicker picker(this->canvas()); if(mappedPt.x() < 0) mappedPt.setX(0); else if(mappedPt.x() > 255) mappedPt.setX(255); if(mappedPt.y() < 0) mappedPt.setY(0); else if(mappedPt.y() > 255) mappedPt.setY(255); return mappedPt; }To copy to clipboard, switch view to plain text mode
How can I map to exact plot coordinates?
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