Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » Technical Support » Getting TWA and TWS of "friends" boats.

Page: 1 2 Next

Posted by
jf44


Users avatar

Posts
14
Registered at
2009-06-19 08:26:04
2017-02-26 11:25:30 - Getting TWA and TWS of "friends" boats.
Hi SOLers.

I am trying to improve a lot the SOL's Google Earth interface. The idea is to display each Soler boat at course in 3D in G.E. with the right direction, speed, sail and trajectory...
Very fancy and absolutely useless.
All what I like so much in the RKN's spirit.

It's something I was used to do with Virtual Regatta and I thought it was a lot more easy with SOL very open philosophy.

But alas it's not.

1) Collecting data with NMEA Proxy from Brainaid's toolbox, I get the name, direction, speed and state of each boat.
Perfect.
But nor the TWA nor the TWS of each "friend" boat.
Yes I know that I could get them from Grib, but it's a lot of work for such a few data.

2) For each boat I need also the type of sail used at the positions collected.
That too could be derived from TWA and TWS and the boat polar.

3) And for the sake of realism, I need for each boat the hull and sails colors.

They don't exist anywhere because SOL does not need them, so I could invent them. But would'nt it be better to give the opportunity to solers to choose their wardrobe ?

So my questions :

It is a way to get the TWA / TWS data for each boat on course directly from SOL server (is that possible and how ?)

OR

get them from the AIS sentences sended by the Brainaid's NMEA proxy server (they need to be added to the flow of data).



Jean from Nantes.
Dans le tourbillon du Web
Attachments
Posted by
Rod


Users avatar

Posts
392
Registered at
2010-06-24 22:30:48
2017-02-26 15:07:07 - Re: Getting TWA and TWS of "friends" boats.
May I refer you to an existing program called VirtualSailor 7.5, by Ilan Papini, which produces a much more realistic sailing experience than SOL. It does not, however, have a lot of the SOL features, such as polars, predictor lines, NOAA Wx, or as many sailing sites. It also cannot handle more than about 20-25 boats at a time.
It does have a free demo feature, and is entirely self contained within your own computer.
While these are definitely deficiencies from the point of view of SOLers, it has many features which would increase the sailing experience for those who are less "competitive", and gives a greatly improved 'visual' look at sailing and racing. It has small freighters, small submarines, motor cruisers, speedy racing run-abouts, guns, torpedoes, lighthouses, navigation buoys, harbours, houses, old castles, etc.. along with waves, rain, hail, and snow. It even has men jogging for exercise along the piers in the harbours. Most of these things may be ignored for our purposes in SOL.
Perhaps Mr Papini might be induced to collaborate with SOL to produce a much improved and much more extensive sailing experience.
The VirtualSailor 7.5 program costs about $35.00 Can. but volunteers have designed extensive additions to the basic program in terms of boats, scenery and sailing sites.
There is no need to "re-invent the wheel" when so much of the work has already been done.
One aspect that may be helpful to SOL is that this could be a program that could be purchased from SOL, and this would help markedly in the overall finances of the SOL operation.

--- Last Edited by Rod at 2017-02-26 15:10:42 ---
If it breaks, it's not strong enough--if it doesn't, it's too heavy.
Posted by
jf44


Users avatar

Posts
14
Registered at
2009-06-19 08:26:04
2017-02-27 01:05:59 - Re: Getting TWA and TWS of "friends" boats.
Thanx Rod. I know of course that there is a lot of very good virtual sailing games, like for exemple Vieux Loup de Mer (VLM), Ocean Virtuel, Liveskipper, VSK, etc.

My purpose is not to program nth on-line game but to display our SailOnLine boats on Google Earth maps.
No more, and just for the fun.
Dans le tourbillon du Web
Posted by
kroppyer


Users avatar

Posts
347
Registered at
2010-02-05 15:25:55
2017-02-27 02:14:23 - Re: Getting TWA and TWS of "friends" boats.
That would be marvellous! For TWA/TWS from other boats you need to get the weather and determine TWD/TWS at the other's position yourself. If you're already retrieving fleet positions and heading directly from sol, this should not be much of a problem.

To use different hull/sail colours for the each boat, you can initially use the one colour automatically and randomly assigned when you register (again, not much additional trouble to retrieve these colours). Later we could use flagpole* to have users change their hull/sail colours.

I can probably help you in the right direction if you're stuck.

*) http://sol.kroppyer.nl/flagpole/
You can create flags, and activate them for your own boat. The meaning of each flag is up to the interpretation of the users. Basically, flagpole let's solers add arbitrary data to their boat, for everyone else to see. If I think it's worth it, I could extend flagpole a little so that people don't have to create a flag for every colour of the rainbow.
Posted by
jf44


Users avatar

Posts
14
Registered at
2009-06-19 08:26:04
2017-02-27 02:48:44 - Re: Getting TWA and TWS of "friends" boats.
Thanx Kroppyer.
Actually I do not retrive positions directly from Sol but by the Brainaid's Toolbox NMEA server.

How can I access to the boats colors ? Is there any Web service like
http://node1.sailonline.org/webclient/boat.xml?token=xxxxxxxx

BTW I have set up random colors for the boats.

regards.
Dans le tourbillon du Web
Attachments
Posted by
Kipper1258


Users avatar

Posts
251
Registered at
2015-06-18 22:08:49
2017-02-27 03:27:29 - Re: Getting TWA and TWS of "friends" boats.
You need this file http://node1.sailonline.org/webclient/race_1018.xml?token=xxxx which has for each boat

<boat>
<id>285746</id>
<name>simon_148</name>
<color_R>225</color_R>
<color_G>197</color_G>
<color_B>33</color_B>
<type>TP-52</type>
<dtg>576.196679386</dtg>
<dbl>210.385518882</dbl>
<lon>114.2</lon>
<lat>22.3</lat>
<cog>0.798365726218</cog>
<ranking>179</ranking>
<current_leg>0</current_leg>
<log>0.0</log>
</boat>

Note that it is a compressed file and your code needs to uncompress it when you receive it.
Posted by
jf44


Users avatar

Posts
14
Registered at
2009-06-19 08:26:04
2017-02-27 09:14:17 - Re: Getting TWA and TWS of "friends" boats.
Thanx Kroppyer Kipper,
This piece of code works "à la perfection" :).
But this is only hull color. So I think the best will be to publish a form to allow Sollers to choose their sails.

BTW is it a mean to get old messages from race 1018 chat because I have missed the comments about my pictures.



--- Dernière modification par jf44 le 2017-02-27 16:08:03 ---
Dans le tourbillon du Web
Posted by
kroppyer


Users avatar

Posts
347
Registered at
2010-02-05 15:25:55
2017-02-27 13:15:00 - Re: Getting TWA and TWS of "friends" boats.
The last post was not me but Kipper, he knows his way around this tech side as well. Have a look here to see some of his work.

Sailonline only uses one colour for boats (no separate sail colours), and people can't choose their hull colour either (well, RC can, but she's special). My suggestion is to get everything working with just this single colour, and then indeed use some kind of form where people can change their hull/sail colour.

Chat messages are stored but we don't normally check old messages, it something I'm only prepared to do when investigating possible rule infringements, which luckily doesn't really happen in sol :)
Posted by
jf44


Users avatar

Posts
14
Registered at
2009-06-19 08:26:04
2017-02-27 23:35:54 - Re: Getting TWA and TWS of "friends" boats.
Thanx. If course I know (and use) DC Checker.

I am implementing the direct access to Sol server. It will more effective than to depend on NMEA sentences which require un local server.

I hope that the beta version will be on line this evening or tomorrow.

I'll use my own server, but if you think that it would be better to use a SOLFan one, I can FTP the sources (PHP) (Creative commons / GNU licence of course)

Jean.
Dans le tourbillon du Web
Posted by
kroppyer


Users avatar

Posts
347
Registered at
2010-02-05 15:25:55
2017-02-28 00:12:45 - Re: Getting TWA and TWS of "friends" boats.
I think javakeda (hosting solfans) would be happy to host your code on solfans. I'm also happy to host it on sol.kroppyer.nl. But it's probably easiest if you use your own server, at least while beta testing. I'll link to it from sol.kroppyer.nl though! :)

Looking forward to the beta!

Page: 1 2 Next

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Thessaloniki to Port Said 2026

Welcome back to the Eastern Mediterranean for the fifth race of our Magical Mediterranean Series. Only marginally less unlikely to be ever raced in real life during SOL’s lifetime than our previous race from Tobruk to Iskenderun, this 710nm race takes us from Greece’s ancient northern port of Thessaloniki through the Aegean island maze, south east into the Levantine Sea to a finish in modern Port Said, in splendid Swan 65s!
Race #1977
INFO by brainaid.de
Swan 65 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: MED - SYC
Race starts: Jun 06th 15:00 Registration will open soon

▶ Flash
GO TO RACE

AWKR 2026


The Australian Women's Keelboat Regatta celebrates and promotes women's sailing in Australia. Comprising a week of intense racing on Melbourne’s Port Phillip Bay, the event has grown to become Australia’s premier women’s regatta and one of the largest in the southern hemisphere, and these past several years Sailonline have been delighted to offer all-comers the opportunity to contemporaneously race against Australia's women virtually in a 20nm round the cans race in Port Phillip Bay. Prepare for some excellent Australian competition! We'll be racing J-109.
Race #2025
INFO by brainaid.de
J-109 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
SPQ2-SPCH-SUPBUD-SYC
Race starts: Jun 05th 02:00 Registration Open!
▶ Flash
GO TO RACE

TuziTekwini TIMED Race 2026

Sailonline is delighted to have been invited again to partner with the King Shaka Yacht Club (KSYC) of South Africa to bring a virtual version of the Tuzi Tekwini Ocean Raceto our online community.
The Tuzi Tekwini Ocean Race is a near 90 nautical mile race down the east coast of South Africa from the port of Richards Bay to the port of Durban. Achievable in a single day and seen by some as an easy mile-builder, the course is more tactical than some think and should not be underestimated. This iconic race promises to be an unforgettable experience for yachting enthusiasts.
Our online version of the race will be a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have two weeks to test your skill and decision making after the race opens.
Race #2037
INFOby brainaid.de
Sailonline’s virtual yacht for all your runs will be our much-loved Farr 38 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ2 - TRCH - SUPBUD - SYC
RACE CLOSE: Saturday,
13 June at 23:00 UTC
Race starts: May 31st 12:00 Registration Open!
▶ Flash
GO TO RACE

Susan Hood Trophy Race 2026

Lake Ontario Offshore Racing (LOOR) welcomes racers to Sailonline’s virtual version of their annual Susan Hood Trophy Race. This year, this pleasant weekender on western Lake Ontario will be of about 60nm in length, and online for convenience will start and finish at the Port Credit Yacht Club (PCYC). At or before the real-life Skipper’s Briefing a decision will be made to race the course clockwise (course Delta) or anti-clockwise (Echo). If there is time we will match this online. As before, the race is the first of two that will count towards a special Sailonline's LOOR Series medals, but this year we sail in Jeanneau Sun Fast 3300s. Bon voyage!
Race #2033
INFOby brainaid.de
Sun Fast 3300 PARTICULARS
NAM_AWIP WX Updates:
0245 / 0845 / 1445 / 2045
Ranking: LOOR - SUPBUD - SYC
RACE CLOSE: Friday,
June 5 at 2300 UTC.
Race starts: May 29th 23:45 Registration Open!

▶ Flash
GO TO RACE

SoCal 300 2026


With California Offshore Race Week already well under way, here now is your chance to participate virtually in SDYC's challenging 243nm (as the seagull flies) SoCal 300 from Santa Barbara to San Diego. With as ever a wide and wild range of boats entered for the real race, whose progress we hope we will be able to follow on our own chart by linking to the YB tracker, virtual SOLers will have to dig deep to remain competitive in our trusty Santa Cruz 52s.
Race #2036
INFO by brainaid.de
Santa Cruz 52 PARTICULARS
NAM_AWIP WX Updates:
0245 / 0845 / 1445 / 2045
Ranking: SUPBUD - SYC
RACE CLOSE: Wednesday,
June 3 at 2300 UTC.
Race starts: May 28th 20:00 Registration Closed
▶ Flash
GO TO RACE

Cross the Convergence 2026 - St Helena to Cape Verde


The fourth race of our series of ocean voyages across the World’s convergence zones takes us out of the Pacific into the Atlantic for a 2200nm race in Judel Vrolijk 62’s, from the desolation of St Helena, there where Napolean Bonaparte saw out the end of his life, to the even greater desolation of Fogo in the Cape Verde’s. You’ll have to cross the equator, with the coasts of Africa and South America your only navigational restrictions.
Race #1984
INFOby brainaid.de
Judel Vrolijk 62PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: CCZ - SYC
RACE CLOSE: Saturday,
June 6 at 2300 UTC.
Race starts: May 22nd 18:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member WRmirekd
  2. Sailonline Yacht Club Member KaSToR
  3. Sailonline Yacht Club Member CriticalHippo
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member Panpyc
  6. Sailonline Yacht Club Member bonknhoot
  7. Sailonline Yacht Club Member HoratioPugwash
  8. Sailonline Yacht Club Member rumskib
  9. Sailonline Yacht Club Member CollegeFund
  10. Sailonline Yacht Club Member sassy63

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client