[TEC] Ranges going mad

05-16-08, 12:32 AM

If im right about the ships being placed increasingly further away then they should(or the models being displayed smaller and smaller with increased distance), then it should not matter how the cameras.dat file are modded. But its definitly something worth to try out as well.

05-20-08, 04:12 AM

I just retested this whole issue out with lenght of ships rather then heights.

Test parameters:

Vs. a Kiturin Maru that in the ONI manual is listed with a length of 427 ft. The Maru is listed with an A, with indicates that its certain data. Im hoping the dev's made the ship from good drawings

Angular Length and Linier Lenght for this ship placed at 400 yards. is

((427ft. / 3) / 400 yards) * 57,3 = Angular Lenght (20,4°)

So the Kiturin Maru should fill 20,4° of vision.

In x 1,5 scope (low power) that is 20,4 tick marks in total as each tick mark is 1 deg. In x6 scope (high power) its 81,5 ticks in total as each tick here only represents 0,25 deg.

The ship was in mission editor placed at 366 meters (equal to 400 yards), 732 meters, 1098 meters 1464 meters and 6862meters away

The targets should fill the below amount of tickmarks in your high power zoom (x6 zoom) and in low power zoom (x1½ zoom)
High - Low
81,6 - 20,4 at 400 yards
40,8 - 10,2 at 800 yards
27,2 - 6,8 at 1200 yards
4,4 - 1,1 at 7500 yards

The formula to figure this out is the following: (ship lenth in yards / Range in yards ) * 57,3 = Angle in degree's

In low zoom each tick is 1 deg.
In High Zoom each tick is 0,25 deg.

To me it looks as it should regarding ship lenths, so i was wrong in my first perception. Sorry for wasting your time gentlemen

Nisgeis · 05-20-08, 06:01 AM

Have you tried measuring distance using surfaces that don't sink into the water, like the top of the deck to the top of the mast, or top of the funnel to top of the deck, to see if you get consistent results?

05-20-08, 11:03 AM

Not yet - but thats the next test. The ONI references is actualy top of mast/funnel to deck anyway, so its a piece of cake

05-23-08, 01:08 PM

Have anyone of you tried to take stadimeter ranges on distances around 7500 to 9500 yards. It seems to me that one pixel change in stadimeter makes pretty significent jumps in range readout. Although it does read out correctly given the correct placement.

I tested the above mentioned range takes by using the mast height only. Its doable if you take the reading from the mast top as the mast bottom is the lowest part at all visible, then it gives the correct range.

Nisgeis · 05-24-08, 02:21 AM

OK, so it's definitely the premature sinking effect I mentioned above, where the waterline is changed, rather than the position on the horizon? I wonder if the range at which they start sinking into the water is moddable in a file somewhere, though I haven't seen anything that might be the control for it. They definitely start sinking into the pseudo horizon before they actually get to the horizon.

05-25-08, 01:50 AM

Correct Nisgeis.

I would start searching in the cameras.dat or the scene.dat files. I would belive those to be the most likely that such a thing would be settled in.

If you have SHIII installed, could you make a check to see if the same sinking is present in that sim as well.....

If its not we could make comparisons between the two sim's files.

05-20-08, 04:12 AM	#2
Mav87th Stowaway Posts: n/a Downloads: Uploads:	Not so wrong after all I just retested this whole issue out with lenght of ships rather then heights. Test parameters: Vs. a Kiturin Maru that in the ONI manual is listed with a length of 427 ft. The Maru is listed with an A, with indicates that its certain data. Im hoping the dev's made the ship from good drawings Angular Length and Linier Lenght for this ship placed at 400 yards. is *((427ft. / 3) / 400 yards) 57,3 = Angular Lenght (20,4°) So the Kiturin Maru should fill 20,4° of vision. In x 1,5 scope (low power) that is 20,4 tick marks in total as each tick mark is 1 deg. In x6 scope (high power) its 81,5 ticks in total as each tick here only represents 0,25 deg. The ship was in mission editor placed at 366 meters (equal to 400 yards), 732 meters, 1098 meters 1464 meters and 6862meters away The targets should fill the below amount of tickmarks in your high power zoom (x6 zoom) and in low power zoom (x1½ zoom) High - Low 81,6 - 20,4 at 400 yards 40,8 - 10,2 at 800 yards 27,2 - 6,8 at 1200 yards 4,4 - 1,1 at 7500 yards The formula to figure this out is the following: (ship lenth in yards / Range in yards ) * 57,3 = Angle in degree's** In low zoom each tick is 1 deg. In High Zoom each tick is 0,25 deg. To me it looks as it should regarding ship lenths, so i was wrong in my first perception. Sorry for wasting your time gentlemen

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05-16-08, 12:32 AM	#1
Mav87th Stowaway Posts: n/a Downloads: Uploads:	If im right about the ships being placed increasingly further away then they should(or the models being displayed smaller and smaller with increased distance), then it should not matter how the cameras.dat file are modded. But its definitly something worth to try out as well.

05-20-08, 06:01 AM	#3
Nisgeis Ocean Warrior Join Date: Jan 2008 Posts: 2,909 Downloads: 77 Uploads: 11	Have you tried measuring distance using surfaces that don't sink into the water, like the top of the deck to the top of the mast, or top of the funnel to top of the deck, to see if you get consistent results?

05-20-08, 11:03 AM	#4
Mav87th Stowaway Posts: n/a Downloads: Uploads:	Not yet - but thats the next test. The ONI references is actualy top of mast/funnel to deck anyway, so its a piece of cake

05-23-08, 01:08 PM	#5
Mav87th Stowaway Posts: n/a Downloads: Uploads:	Have anyone of you tried to take stadimeter ranges on distances around 7500 to 9500 yards. It seems to me that one pixel change in stadimeter makes pretty significent jumps in range readout. Although it does read out correctly given the correct placement. I tested the above mentioned range takes by using the mast height only. Its doable if you take the reading from the mast top as the mast bottom is the lowest part at all visible, then it gives the correct range.

05-24-08, 02:21 AM	#6
Nisgeis Ocean Warrior Join Date: Jan 2008 Posts: 2,909 Downloads: 77 Uploads: 11	OK, so it's definitely the premature sinking effect I mentioned above, where the waterline is changed, rather than the position on the horizon? I wonder if the range at which they start sinking into the water is moddable in a file somewhere, though I haven't seen anything that might be the control for it. They definitely start sinking into the pseudo horizon before they actually get to the horizon.

05-25-08, 01:50 AM	#7
Mav87th Stowaway Posts: n/a Downloads: Uploads:	Correct Nisgeis. I would start searching in the cameras.dat or the scene.dat files. I would belive those to be the most likely that such a thing would be settled in. If you have SHIII installed, could you make a check to see if the same sinking is present in that sim as well..... If its not we could make comparisons between the two sim's files.