Re: Route animation in google maps with GWT

Jan,

The marker arrow is actually 24 images (one for each rotation set on
15 degree increments). I named them like boat-0.png, boat-15.png, ...,
boat-345.png and put them in a single folder. Then, I take the heading
(from the position report) and calculate the nearest 15 degree
increment to build the image name for the marker. I had looked high
and low for a way to just rotate the image and couldn't find one, so
that's how I solved it.

The Slider came from the GWT incubator. I copied the specific
class(es) I wanted (I think it was called SliderBar) so I wouldn't
have to include the entire jar. So, the slider is a single component,
but I did change the CSS a bit to make it look nicer and fit better
with my UI.

HTH,
Chad
www.milamade.com

On Oct 26, 1:55 am, Jan <jan.widm...@gmx.ch> wrote:
> Hi Chad,
>
> thanks for your answers. You pretty much got me out of trouble.. :-)
>
> But there are still one or two questions:
>
> - Your marker (arrow) change his angle adjustement. How did you do
> that? Because i didn't found a possibility to set the angle..
>
> - What kind of Elements are used in your Tim Slide bar? Are this
> special animation elements of gwt, or normal java buttons and
> scrollbar? How do i find them in GWT?
>
> Thanks for your answers.
>
> Jan
>
> On 11 Okt., 23:55, Chad <chad...@gmail.com> wrote:
>
>
>
>
>
>
>
> > Jan,
>
> > You can do it all with GWT. You can see a partial example of it here:
>
> >http://www.dtrac.us/hmr.html
>
> > I say partial because that page is setup for a race that takes place
> > in the future so there aren't any position reports to show yet. But,
> > even without that, you can see how the time line and animation works.
> > There is a time line (slider control) that can be manipulated
> > manually. There is a spinner control to allow user control over the
> > speed (forwards and backwards). There are also overlays that can be
> > turned on and off (and zoomed into). And the main race course can be
> > zoomed to (target images). We will also be tracking Marco Nannini in
> > the Route du Rhum next month. You can see the tracking page for his
> > race on his site:
>
> >http://www.marconannini.com/tracking
>
> > You'll notice the sites look very similar. The fact is, I did this
> > data driven. This way, I can just add a few rows to a few tables to
> > create a new event. It also supports multiple devices (boats, cars,
> > people, whatever) in a single event. It's not hard to do. Brian pretty
> > much hit it on the head when he said to use an array and a timer. Mine
> > was a little more complex since I keep the slider, the polyline, and
> > the position reports all in sync.
>
> > Have fun,
> > Chadwww.milamade.com
>
> > On Oct 9, 7:53 am, Jan <jan.widm...@gmx.ch> wrote:
>
> > > Hi all,
>
> > > For an actual project, we need to evaluate movements of motor-ships.
> > > The position datas are sent from a gps router on the ships and are
> > > saved in a database on our server. One of our goals is to show the
> > > driven way of one or more ships between a specified time as an
> > > animation. Our Application is written in Java with GWT. What we have
> > > already is, that the driven way get's drafted like a normal route in
> > > google maps. What we want is, to show for example all ship movements
> > > for one day in fast motion.
>
> > > My actual problem is, how to animate the driven way. Is it possible to
> > > do the animation in GWT, or do we need to use javascript?
>
> > > I hope, someone can give me some ideas.
>
> > > Thanks a lot.
>
> > > Jan

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