[Ovmsdev] iPhone UI Request-For-Comments

Tom Saxton tom at idleloop.com
Sat Apr 21 13:47:53 HKT 2012

How about superimposing the car image on a compass that shows the direction?

Perhaps draw the speed radially in the direction of travel?


on 4/20/12 9:06 AM, Mark Webb-Johnson wrote:

> Guys,
> I've been working on tidying and cleaning up the iPhone App, and am now
> looking at the Location tab.
> First thing I've done is revamp the code to handle location changes and
> support car bearing. I've also done an interface for social groups, and tidied
> up the object model for all this. The last step is to enable the display of
> cars for selected social groups.
> I've put a couple of youtube videos up to show what it looks like:
> http://www.youtube.com/watch?v=l6DmRPfX3_8
> http://www.youtube.com/watch?v=YxN16qN7h5E
> I'm interested in your opinion on the car image used. The problem is the
> rotation of the car, and the image perspective we use, leads to some strange
> upside-down appearances. I tried changing to the top-down car (as used on the
> "Car' tab to show TPMS, etc), but it really doesn't look nice.
> What do people think? Is it ok without re-doing a whole new set of images?
> Regards, Mark.
> P.S. The demo is done with a car called RALLY. The data comes from last
> summer's round-Hong-Kong-rally. We took GPS data from the Alpine head unit,
> with location streamed once every two seconds, and play it back as if a car is
> driving it (with car bearing derived very roughly as the bearing between the
> location now and the location 2 seconds ago - so it is a bit jumpy). Real
> Tesla Roadsters seem less jumpy on the direction (I guess they smooth the GPS
> data over more than 2 seconds). You can see another visualisation of the round
> Hong Kong rally data here.
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