FlightGear Forum
For example, take a look at KSFO, who has a coodinates of [N37° 37.025, W122° 22.997)
(I added Route Text instead, under data->routes->KSFO->KSFO_Text_.xml to show parking number)
But that is not enough.., as all taxiways lines are still missing.
So, i swept through the source code to find out whats the problem. And after sometime i found this method under:
Package: de.knewcleus.openradar.view.groundnet TaxiPoints.java
line 67-73 | What the method is trying to do is, take a Degree and Hour coordinate and convert to degree.decimal coordinate:
W122° 22.997 = -122.383283
if we focus on Line 68; If the Coordinate start with W, S.., the variable sign become -1.
now if we focus on line 72 and assume the method will parse [W122° 22.997], we can see:
(double)sign * degree + minutes / 60
= -1.0 * 122 + 22.997 / 60
= -122 + 0.383283 <- (- +) subtracts rather than join
= -121.6167
correct answer should be -122.383283.
we ended up getting the wrong answer because were adding a positive value to a negative value, which ends up subtracting rather than joining.
The solution is to multiply the minutes by sign(-1) and add brackets.
(double)sign * degree + (sign * minutes / 60)
= -1.0 * 122 + ( -1 * 22.997 / 60)
= -122 - 0.383283 <- (- -) adds
= -121.383283
After Compiling.., we load KSFO and we then see this:
Beautiful isn't it? i have used OpenRadar for over 5 years, and i have never seen KSFO like that. The reason why the taxiways line and parking number didn't appear its because they were being misplaces at a different coordinate for example:
[W122° 22.997] was being place at [-121.6167], instead of the correct coordinate [-121.383283]. that's over 12 miles difference!!!
I have created a fork on the Source-Forge called Capt-jeff-Flightgear, that is a clone of the branch called Flightstrip-Bay for OpenRadar..
But since I'm new to how git works, i don't know how to merge to the original. Any recommendation on what to do next?
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