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[Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in
From: |
Pantxo Diribarne |
Subject: |
[Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures |
Date: |
Thu, 18 Jun 2015 10:10:15 +0000 |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 |
Follow-up Comment #18, bug #44959 (project octave):
@Martin:Qt uses the exact same opengl rendering class as fltk, the problem is
not the gui toolkit but OpenGl.
If you zoom-in a plot to see points that have *relative distance* (i.e.
(x1-x2)/x1) smaller than the opengl precision (~ 2e-7) you'll end up with
points that are randomly placed as opengl is unable to compute their
coordinates accurately using single precision (see bug #45271 , related to the
previously cited bug). Trying to retrieve their coordinates with the mouse is
of no use :-).
Can you propose a simple example script, using fltk, where mouse coordinates
are not enough accurate?
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- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, (continued)
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Martin Kunz, 2015/06/06
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Pantxo Diribarne, 2015/06/16
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Pantxo Diribarne, 2015/06/16
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Philip Nienhuis, 2015/06/17
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Rik, 2015/06/17
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Pantxo Diribarne, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Philip Nienhuis, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Martin Kunz, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Pantxo Diribarne, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Martin Kunz, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures,
Pantxo Diribarne <=
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Martin Kunz, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Martin Kunz, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Pantxo Diribarne, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, John Donoghue, 2015/06/18
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Rik, 2015/06/19
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Pantxo Diribarne, 2015/06/20
- [Octave-bug-tracker] [bug #44959] Display coordinates of mouse cursor in QtHandles figures, Pantxo Diribarne, 2015/06/22