[Loadstone] Exploration mode

Rob Melchers rob at loadstone-gps.com
Thu Oct 25 08:10:55 BST 2007


You are talking about the view angle in both exploration and navigation 
mode. In exploration mode we are looking at a map, and maps have a tendency 
to be viewed with the top of the map to the north. Looking to the north 
(key 2 in exploration mode) from our present point of view LS uses a wide 
angle, virtually going there and looking south (key 8) the view angle is 
not changed. This will sometimes result in the effect of not going back to 
the starting point when jumping from north to south and back. I've tried to 
eliminate some of this behaviour in the 'Database Explorer' on the tools 
page by providing adjustable view angles. However, I don't know if the 
phones we use have the kind of computing power to cope with this extensive 
sorting of expected points. Again, the clockface approach is a relative 
approach and does not belong in Exploration mode. It would be like turning 
the map around all the time. In Navigation mode the clockface announcement 
is relevant to the users position and movement, because the user changes 
position relative to the cardinal definitions of the compass. Here also the 
view angle comes in effect and it would be nice if it could be adjusted 
(but same arguments as above). Maybe Shawn can shed some light on what view 
angle is used in both modes. Also, see if the 'Database Explorer' on the 
tools page gives some hints of how both modes could work on the phone and 
let us know your findings.


At 10/25/2007, you wrote:
>Hi Charlie
>On Tue, 23 Oct 2007, Charlie wrote:
> >> It would be better if it reported always nearest item in front or
> >> preferably list of those items. When entering exploration mode LS could
> >> remember latest valid heading from navigation mode and afterwards use
> >> heading of latest virtual movement.
> >
> > No, in exploration mode the reporting should be absolute.
>   Is there any other reasons beside complexity of coding vs complexity of
>   I still remember those text adventures from eighties but do  not want
>them back. One feature of those was that if user move one step to east and
>one step to west he/she was not necessarily same place as before those
>steps. Same applies to LS exploration mode.
>   If we think a straight road from west to east with four waypoints (A, B,
>C, D) 100 meters apart each other and one, E, 50 meters north of C.
>            E
>A    B    C    D
>   If we walk physically from west to A  point B is at 12 o'clock. If we
>turn exploration mode B  is not more in front of us but in the east. Ok...
>where is east... back to navigation mode, walk a little... ahh, we were
>walking east  so now we know B is till ahead... oops.... east, not ahead.
>   If we now move virtually to B, the only visible waypoint in location A we
>got A in west, not back at 6 o'clock as in navigation mode. C  is at east
>and E is at east too but non-visible. To 'see' E we have to move virtually
>at point C and there  instead of turning  left as in real navigation turn
>to north.
>   Now comes the funny part. We are at point E. C is at south, At east there
>   nothing but LS clains there is D. If  we move to E and  'back' to west we
>   are at point C.
>   In every movement there were heading: to east when we reached point A,
>east from A to B and B to C, north from C to E,  something between east
>and southeast from E to D and west from D to C.
>   On every location there is also availalbe clockface-type heading to all
>points. I'll left calculation as an exercise to the reader:-) Tip: at B A
>is at 6 o'clock, C is at 12 o'clock, D is at 12 o'clock and E is at 11
>   Show area -function is a step to rigth direction but it is buried too
>deeply in the menues and is available only in exploration mode. It also
>lacks a important feature to filter out all
>but  most interesting points, the points  ahead.
>   > Bert
> >
> >
>You can still escape from the Gates of hell: Use Linux!
>mr. M01510
>Loadstone mailing list
>Loadstone at loadstone-gps.com
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