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Originally Posted by The Bad Wolf
Have been looking at U-jagd v1.2 for GWX and OLC's GUI AOB disc mod and noting the differences. I assume that OLC changed it to measure distance. For historical reason's, I would like to replace OLC's AOB for the U-jagd v1.2 which will get rid of the Mast x2.
Does anyone know how they worked out distance i.e. Tables, Slide Rule.
Help would be most appreciated.
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If I remember correctly OLC and/or Hitman said that the original UBoot scope had a split-sprism mechanism just like SH4 has. Where the light entering the optics is split in two, one continueing it's path normally, but the other is deflected vertically by turning some (thumb?) wheel to tell the object's angular size. And as the ratio of mastheight over range is proportional to the tangent of that angle, range can be deducted. Which was probably also done mechanically with a range dial as output somewhere.
Stock SH3's solution with a horizontal line moving up and down the scope isn't actually very far off the truth from what I understand. You just have to imagine the thin line is actually the bottom of the second image of the target. OLC or Joegrundman's solution seem both to be a solution that is a strep backwards technology wise (IMHO), but appearantly required because of the limitations sh3 has. If you want to do without the notepad. They had to resort to measuring the objects size relative to a fixed scopemarks in the optics. Joegrundman then seems to separate range measurements from the AOB calculation, where as OLC tried to integrate them as best as possible. I prefer the latter, but whether either was historically correct I don't know.
Anyway, I think OLC had to use doubled mastheight values because range calculations are done with the full observed mastheight, whereas he did AOB based on only halve the ship's observed length. So he needed to stuck a factor of 2 somewhere. This must have been the easiest solution to him, a modder's perogative. If one used a procedure using all the horizontal marks from bow to stern this would not have been neccesary. However, it's tricky counting marks that way, and the inside marks on the middle wheel are not enough in most 'near' situations.
But I stand ready to be corrected if I am wrong in any of my assumptions.