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| Position light signal symbol 15/11/2017 at 01:14 #102904 | |
TUT
532 posts |
Apologies if this has been asked before, but I've always wondered about why the symbol for a position light signal used on IECC workstations (which is obviously the symbol that SimSig's is modelled on) is, as far as I can make out, mirrored. I mean, the white lights in a position light signal are top centre-left and bottom right, with the slope from left to right. Why does the shunt signal symbol slope the other way? To me it's always seemed notably backwards.
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| Position light signal symbol 15/11/2017 at 02:55 #102906 | |
GeoffM
6376 posts |
IECC/SimSig use a quarter circle. If you look at http://www.fourbythree.co.uk/library/large/sig/SIGNAL-7.JPG (old style) and imagine the white light is the axle, and the red light marks the 9 o'clock position, then drawing an arc from the red clockwise around the white pivot light, at the 45 degree angle (10:30?) you get to the second white light. Continue the arc to 12 o'clock and you have your quarter circle. Does that make sense?
SimSig Boss Log in to reply |
| Position light signal symbol 15/11/2017 at 03:22 #102908 | |
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TUT
532 posts |
GeoffM in post 102906 said:IECC/SimSig use a quarter circle. If you look at http://www.fourbythree.co.uk/library/large/sig/SIGNAL-7.JPG (old style) and imagine the white light is the axle, and the red light marks the 9 o'clock position, then drawing an arc from the red clockwise around the white pivot light, at the 45 degree angle (10:30?) you get to the second white light. Continue the arc to 12 o'clock and you have your quarter circle. Does that make sense?Yes it does make sense, thanks a lot :) To me, it still looks wrong  But I can certainly understand what you've said 
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| Position light signal symbol 15/11/2017 at 03:43 #102909 | |
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GeoffM
6376 posts |
TUT in post 102908 said:To me, it still looks wrongYou're not the first to say that, and you won't be the last! SimSig Boss Log in to reply |
