[Kstars-devel] Problem with getXY()

[Pablo de Vicente]

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Hello Jason,

   I have almost addressed all issues concerning the angular distance 
measurement tool but I still have problems plotting the ruler. I have not 
commited the changes yet till I fix this last issue. The way I plot the ruler  
is as follows: when the angular distance mode is activated the first point is 
stored in a SkyObject called previousClickedObject. When the angular mode is 
finished the distance is computed (correctly) and to plot the line I create 
the first QPoint like this: 

  beginRulerPoint = getXY( previousClickedPoint(), false, true);

and the second one using the instruction:
  
QPoint(e->x() , e->y() ) 
 
where e is a pointer to QMouseEvent

I use false for the second argument of getXY because the coordinates of 
previousClickedPoint() are stored from the RA and Dec and no explicit 
conversion is done towards Az, El. I used true for the third argument to 
apply refraction correction, but since the other argument is false, this is 
not appliable.

I have debugged the code and the X,Y coordinates returned by getXY are 
incorrect, however the RA and Dec for previousClickedPoint are correct. So, I 
suppose that there is a problem with how I call function getXY.  
getXY accepts as a last argument, scale, which is = 1 by default. I do 
not know which value I should use for scale, and if this is the source of 
problems.

  I have noticed that the error plotting the ruler follows a pattern which 
divides the screen in two halfs, one to the left and one the right. That  is, 
the artificial offset in X is different when  X <0  than when X > 0. 

Any ideas?.

regards

Pablo.
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