[Octave-bug-tracker] [bug #49756] Crash when panning an image to top of axes

[Rik]

Follow-up Comment #12, bug #49756 (project octave):

Can you just put std::abs around the calculation so it doesn't matter whether
y(0) or y(1) is larger?  Also, it looks like the same situation could happen
for the x-axis.  Maybe std::abs again?


     if (w > 1)
       {
         pix_dx = (p1(0) - p0(0)) / (w-1);
         nor_dx = (x(1) - x(0)) / (w-1);
       }
     else
       {
         const ColumnVector p1w = xform.transform (x(1) + 1, y(1), 0);
         pix_dx = p1w(0) - p0(0);
         nor_dx = 1;
       }
 
     if (h > 1)
       {
         pix_dy = (p1(1) - p0(1)) / (h-1);
         nor_dy = (y(1) - y(0)) / (h-1);
       }
     else
       {
         const ColumnVector p1h = xform.transform (x(1), y(1) + 1, 0);
         pix_dy = p1h(1) - p0(1);
         nor_dy = 1;
       }




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