[Marble-devel] Gps tracking

[Konrad Enzensberger]

any hint's how to use third parameter ?

br, konrad

----- Original Message ----- 
From: "Konrad Enzensberger" <e.konrad at mpegcode.com>
To: "Torsten Rahn" <tackat at t-online.de>; <marble-devel at kde.org>
Sent: Tuesday, September 06, 2011 11:13 AM
Subject: Re: [Marble-devel] Gps tracking


> Hi Thorsten,
> 
>>>where it puts the driving direction always upwards:
> yes
> 
>>>the third parameter in createFromEuler should allow to rotate the globe
> i am not clear about third parameter value.
> should it be an angle ? in radians ? or degree?
> maybe this angle should be calculated from last gps position to current 
> position?
> 
> thanks, konrad
> 
> ----- Original Message ----- 
> From: "Torsten Rahn" <tackat at t-online.de>
> To: <marble-devel at kde.org>
> Sent: Monday, September 05, 2011 5:25 PM
> Subject: Re: [Marble-devel] Gps tracking
> 
> 
>>
>> Hi Konrad,
>>
>>> Is there a way to rotate the map to allways drive in north direction ? 
>>> like
>>> navigation devices do?
>>
>> Well currently it does always have north pointed upwards. You probably 
>> mean
>> the case where it puts the driving direction always upwards:
>>
>> This was possible many moons ago: Have a look at:
>>
>> void MarbleMap::centerOn( const qreal lon, const qreal lat )
>> {
>>    Quaternion  quat;
>>    quat.createFromEuler( -lat * DEG2RAD, lon * DEG2RAD, 0.0 );
>>    d->m_viewParams.setPlanetAxis( quat );
>>    d->m_textureLayer.setNeedsUpdate();
>>
>>    emit visibleLatLonAltBoxChanged( d->m_viewParams.viewport()-
>>>viewLatLonAltBox() );
>> }
>>
>> IIRC the third parameter in createFromEuler should allow to rotate the 
>> globe
>> around the axis that is orthonormal to the screen plane.
>>
>> I recall that at some point we had a method inside MarbleMap which took 
>> three
>> parameters to accomplish this. Apparently It got removed at one point. 
>> Maybe
>> we should reintroduce it.
>>
>> BR,
>>
>> Torsten
>>
>>
>>
>>> thanks for support,
>>> konrad
>>
>> _______________________________________________
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>> Marble-devel at kde.org
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> 
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