Incorrect calculation of COMMENTPOS

[amshikov]

Hello!

There is an issue with calculation of COMMENTPOS. It'd better illustrated by exampe config:

regular NODEs:

NODE gw0.od
<------>LABEL gw0.od
<------>ICON 180 180 images/router-blue.png
<------>POSITION 500 140

NODE sw1-bug.od
<------>LABEL sw1-bug.od
<------>ICON 180 180 images/core-switch-blue.png
<------>POSITION 500 550

NODE gw0.od-2
<------>LABEL gw0.od-2
<------>ICON 180 180 images/router-blue.png
<------>POSITION 800 140

NODE sw1-bug.od-2
<------>LABEL sw1-bug.od-2
<------>ICON 180 180 images/core-switch-blue.png
<------>POSITION 800 550

regular LINKs:

LINK gw0.od-sw0.od-1
<------>BWLABELPOS 62 38
<------>COMMENTPOS 87 7
<------>INCOMMENT xe-4/0/0
<------>OUTCOMMENT 5
<------>NODES sw1-bug.od:-83:-85 gw0.od:-83:0

LINK gw0.od-sw0.od-2
<------>BWLABELPOS 62 38
<------>COMMENTPOS 85 7
<------>INCOMMENT xe-4/0/0
<------>OUTCOMMENT 5
<------>NODES sw1-bug.od-2:-83:-85 gw0.od-2:-83:0

Compare 87 and 85 in COMMENTPOS in both links. The expected result is that INCOMMENT in second link should be closer to the center of a link, but actually it is suddenly shifted to the end of link. Screenshot: https://i.imgur.com/abBu1gk.png