[REL] More realistic periscope

Ahhhh sorry Arclight - i thought you knew about the math behind it.

You can not per se calculate the value you need to put into camera.dat, but you can calculate what the Linier Field of View need to be at a certain range.
Thats what i did with the Emden Cruiser.

A is the Angular Field of View (for the scope thats 9° in high power fx.)

17,45 x A x 1000 = Linier FOV in mm at a range of 1000 meter

aka 17,45 x A = Liner FOV at 1000 meters

so in high power and a range of 1000 meters the scope need to cover 157 meters from the left edge to the right edge of the scope. That fits with an Emden Cruisers length.

I know that you CAN somehow calculate the value to put into the Camera.dat, but i have to "dig in" to find that. I allways found it easier to just adjust it to fit.

HMMM - Emden is in the Official guide listed at 156 meters length, same on its wiki page... http://en.wikipedia.org/wiki/German_cruiser_Emden

Where did you find the other length ?

Ok i found this post in the old SH-4 mod forum threads.....

I haven't had time to try this, but here's how I would have done it (and how I have done it for Armed Assault). If you open the scope texture, you can count the pixels between each tick. The one I just measured has 68 pixels between each group of four ticks. If each tick is 15 MoA, then the scope is obviously scaled for 68/(4*0.25) = 68 pixels per degree in high magnification. High magnification is 6x, so the base magnification is then 68/6 = 11.33 pixels per degree at unity. The texture width is 1024 pixels, so the base field of view should be 1024/11.33 = 90.35 degrees. This number goes in AngularAngle.

so in theory (mind I never did this my self)

Texture size / pixels pr degree / zoom = angularangle parameter number

I tried to use the math on your graphic ObsPeriscope_Mask_1024.dds

measured pixels from 15° left of center mark to 15° right of center mark was 454 pixels (for 30°)

thats 15,1 pixel pr. degree. So 1024/15.1 = 67,815

dividing that with x1,5 for the zoom gives 45,21 witch should then be the AngularAngle value used for the Observations scope camera setting.

for the attack scope graphic I also got 15,1 pixel per degree, ending up with the same angular angle value of 45,21.

I tried it and it did NOT work as it should - the graphics must be changed in size somewhere.

Repeated checks in game showed me that your camara.dat file should have an AngularAngle value of 95,0 (attack and observations perí) to work as you want. But the viable whole in your periscope is too big (or the ticks are too close together - there should be 38 tics over the diameter of the hole if each tick is 1° in x1,5 zoom. )

image otw soon.

If i were you I would enlarge the "hole" and remake the tics.

[Arclight]

I am doing just that, but being a bleeping perfectionist, drawing the bleeping graticules is a bleeping pain in the bleep. Taking a little bleeping time...



Should work once done though, just a little fine tuning on the angular thingy to get it perfect.

* and shiplength I got from the .cfg files in the "Sea" folder. It better be accurate.

[Bilge_Rat]

I uploaded some screens of what it looks like in game:

Originally Posted by Arclight

I am doing just that, but being a bleeping perfectionist, drawing the bleeping graticules is a bleeping pain in the bleep. Taking a little bleeping time...



Should work once done though, just a little fine tuning on the angular thingy to get it perfect.

* and shiplength I got from the .cfg files in the "Sea" folder. It better be accurate.

Heh - ill just bleeping have to wait a little then

im not sure the shiplength from the .cfg file is of any use other then displaying it self in the recognitions manual......

The real ship was 156 meters long, and the model of it looks ok. The Dido should also be 156 meters long thats correct both in the old SH-3 manual as well as on Wikipedia.

[Arclight]

So the Dido is right? That's a bleeping relief.

Sneak peak

[The General]

Originally Posted by Arclight

Step by step.

Got my mathskills back up to scratch, think I'll do some calibrating.

Here's some samples of remade masks, sans markings, to give an impression of the shading and brightness. Let me know what you think.



Obs scope, att scope and uzo respectively.

I think these look bloody marvelous. Exactly correct

Arclight it looks like your going for the gold medal

Just now i received an email from Carl Zeiss AG with a positive respond on a request for help finding info on the graticles in the periscopes.

I'm looking forward to see what that will bring.