Navigation GPS

[bigbass]

Hello Alex
X11 & cairo

I tested your demo and works on the RPI3


on another theme
app key KeyError: "'W3W_API_KEY'",

get one here
developer.what3words.com/public-api


I think that with several people
even if we are going about things differently
the end result is we will advance faster
if everyone is doing some part of the mix
( we worked together in the past with X11 too)

javascript is not my first choice when thinking about code
and I used to avoid it like a virus
wanted nothing to do with it (so I understand what you mean 100%)
but now I guess its time for me to
at least get something simple working with it
maybe because I have a little more free time now
then port what I can back to bacon

Joe

[alexfish]

Hi Joe

Thanks for testing

+ thanks for the link. ADDED , looks like this could cost money, and has limits,
+ only a comment , when at sea and out of range of a connection ?

In Past I posted details of Embedded Python using BaCon, so possible a half way Compromise , I hope,
as Can see , will not have tested this bit as of yet.

I am Busy for 3/4 days , back late at night ...

in mean time wonder where and or what three.little.piggies is or means, can't imagine that
four.little.piggies will be adjacent to three.little.piggies

Thanks again
+
BR
Alex

[rikky]

The key thing works.

The functions:

  GET_BEARING:
    -- I'm not a native English speaker, so I haven't got a clue what this is.
       A round metal machine part with wheels in it?

  GET_DISTANCE:
     --deal with this later

  LONDEG2LONMIN LATDEG2LATMIN LATDEG2LATSEC LONDEG2LONSEC
    
    Oke, they seem to work, so I'' incorporate them (for now)
    But honestly, I cannot figure out what is written there.
    It's NOT BaCon, that's for sure.

Important however is the other way around.
The OpenStreetAndSea apie wants DD.

So here a command line utility to do everything to DD

example: CONVERT2DD "40 44 54.3 φ N"  "73 59 9 λ W"
example: CONVERT2DD "33° 51' 31"'"'" S" "151° 12' 51"'"'" E"
example: CONVERT2DD "33 51.5167 S"   "151 12.8500 E"

Note, If the following does't compile, swop the remarks in lines 77/78 and 81/82
I Yust want to see if something like   REPLACE$(string$,"″"," ") will be copied over the forum correctly.
If so, this will drive people crazy. 

Attached File removed and new file some posts further on

[alexfish]

A bearing is a measurement of direction between two points. ... An azimuth bearing uses all 360° of a compass to indicate direction. The compass is numbered clockwise with north as 0°, east 90°, south 180°, and west 270°. So a bearing of 42° would be northeast and a bearing of 200° would be southwest.

Distance

all in Easier than J
& extracts from Two well Known Apps

[bigbass]

Hello Rik


I'm getting this as output on my RPI3

./CONVERT2DD "40 44 54.3 φ N"  "73 59 9 λ W"
CONVERT2DD: The computer says no, in line 108

./CONVERT2DD "33° 51' 31"'"'" S" "151° 12' 51"'"'" E"
-33.864167 +151.203333

./CONVERT2DD "33 51.5167 S"   "151 12.8500 E"
CONVERT2DD: The computer says no, in line 103

To Confirm any values here
www.fcc.gov/media/radio/dms-decimal


the math is easy to do but...
support.goldensoftware.com/hc/en-us/articles/228362688-Convert-Degrees-Minutes-Seconds-To-Decimal-Degrees-in-Strater


I see the "issue" because You have to except different syntax formats
depending where you are getting the data

but if φ N ,λ W ,°,'," are pre parsed and removed first
the code could be reduced


Joe

[alexfish]

Hi Rik

getting same as Joe

pi@raspberrypi:~/Downloads $ ./CONVERT2DD "40 44 54.3 φ N"  "73 59 9 λ W"
CONVERT2DD: The computer says no, in line 108
pi@raspberrypi:~/Downloads $ ./CONVERT2DD "33° 51' 31"'"'" S" "151° 12' 51"'"'" E"
-33.864167 +151.203333
pi@raspberrypi:~/Downloads $ ./CONVERT2DD "33 51.5167 S"   "151 12.8500 E"
CONVERT2DD: The computer says no, in line 103

the
REPLACE$(string$,"″"," ")
have
: “ : leftdoublequotemark
also have
: ” : rightdoublequotemark
so not native here
what does ASC() show and LEN()

If test the X11 cairo test the utf8 keys and will get as above
if past the REPLACE in BaCon GUIGTK editor , will see the same
BR
Alex

Attachments:

[rikky]

Ahah,
Made a change in the last moment that proved wrong.
Changed ISNUMBER TO ISINT
But the parts in the coordinates contain decimal points, so they are not ints.

CONVERT2DD.bac (4.83 KB)

Now it should work.



PRINT "′ " & STR$(UCS("′")) :        shows ′ 8242    

[alexfish]

pi@raspberrypi:~/Downloads $ ./CONVERT2DD "40 44 54.3 φ N"  "73 59 9 λ W"
+40.745556 -73.999722
pi@raspberrypi:~/Downloads $ ./CONVERT2DD "33° 51' 31"'"'" S" "151° 12' 51"'"'" E"
-33.864167 +151.203333
pi@raspberrypi:~/Downloads $ ./CONVERT2DD "33 51.5167 S"   "151 12.8500 E"
-33.858612 +151.214167

BR
Alex

[alexfish]

Meaning
8242
prime, =minutes, =feet, u+2032 ISOtech -->

I Think Says He
www.w3.org/TR/WD-html40-970708/sgml/entities.html

so can name as *$

[alexfish]

Just an update to The X11cairo + compositing

No code as yet as a complete app , be patient

Demo Showing X11 Window

Create X11 Window
Create Cairo X11 surface
Create Keyboard input :

Create Openstreetmap surface
Create Openseamap surface (navigation symbols)
Create ...

Render streetmap from png
Render seamap from png
Render ...
render text to surface

BR
Alex

Picky

Attachments:

[rikky]

Just want to mention that I have nothing to mention. 

Got stuck everywhere.

Taking another route though.
NOT Cairo but SVG
I think SVG is made for this.
With your vieuwbox only vieuwing the area where you are
And the vieuwport having already open several charts glued together, with your seamap overlay, and your own svg objects, (like your ship or your bike etc) over that.

So I'm in the process of learning svg
Will take a wile, sorry.

[alexfish]

You still need to draw to the Window
The demo above use what ever layer you want . yet remember that image format is
PNG2*
And Then in essence can put your combined svg / converted to png or whatever converts and miss seamap bit
here it will be svg2*

so here Yes, You are correct, and the render may be faster ,

Create ... means further layer bits and or what ever . = OpenDoor .. what the user wants

but the final bit is always 1.

If Using GTK then gtk2 default is Render To cairo
librsvg & gtk
HERE
There again Most Browsers see svg , but it still has to be Rendered some How.

Good Luck
+
BR
Alex

[rikky]

Pfff

Got something.
A pre embryonal thing, but sort of working.
Using the new GUI functions from BaCon.
It glue's a few Open sea charts together to a big one, and shows the chart every half second.

Unfortunately you don't see that yet. 

The big chart looks like one normal chart and is mostly standing still, for I am not there yet to move the vieuwport according to the position of the ship (or bike)
I haven't even figured out where this is, the exact location of the ship/bike/etc on the chart.

But all the functions are there, so I have pre programmed a position in Amsterdam, and thr position changes slightly over time.
Just to demonstrate.

Beware, it's still ugly.

seamap.bac (11.27 KB)

 Rik

[alexfish]

Hi Rik

compiles , but will not show,
is part of the file missing

All is of subs and functions

and the last lines are

stream = g_memory_input_stream_new_from_data((const void *)chart$, -1, g_free)
pixbuf = gdk_pixbuf_new_from_stream(stream, NULL, NULL)

CALL gtk_image_set_from_pixbuf(GTK_IMAGE(GUIWIDGET(id, "image")), pixbuf)

CALL g_object_unref(pixbuf)
CALL g_input_stream_close(stream, NULL, NULL)

' Draw each second
ALARM Draw, 500

ENDSUB

IE, no main

ADDED: Scrap that, think I see it

BR
Alex

[alexfish]

Hi Rik

Can You post example of command line input

can seem to get this working
pi@raspberrypi:~/riknav $ ./seamap 52.3740300 4.8896900 16
Draw
52.374530
seamap: The computer says no in line 124

BR
Alex