My comeback with Marble and KDE

Well, I have to say I had been in some kind of “mental shutdown” ever since the series of bad incidents that had happened to me, but it feels good to say, that now after coming back home, and getting a few days to get a grip back on myself, I am back with FOSS again.

I just pushed my latest patch to the upstream git repository of Marble after it got accepted in the git reviewboard, and thus have enabled the support for reading and writing of the gx:altitudeMode KML tag in Marble, which means that, from now on, along with being able to get the height of any location relative to ground, the height clamped to the ground, and the absolute height, we will also be able to get the height relative to and clamped to sea floor as well.

Here are the contents that were present in the previous tag of <altitudeMode>

  • relativeToGround – (default) Interprets the <altitude> as a value in meters above the ground. If the point is over water, the <altitude> will be interpreted as a value in meters above sea level.
  • clampToGround – For a camera, this setting also places the camera relativeToGround, since putting the camera exactly at terrain height would mean that the eye would intersect the terrain (and the view would be blocked).
  • absolute – Interprets the <altitude> as a value in meters above sea level.

And here are the contents of the new tag <gx:altitudeMode> whose reading/writing have been enabled by me:

  • relativeToSeaFloor – Interprets the <altitude> as a value in meters above the sea floor. If the point is above land rather than sea, the <altitude> will be interpreted as being above the ground.
  • clampToSeaFloor – The <altitude> specification is ignored, and the Camera will be positioned on the sea floor. If the point is on land rather than at sea, the Camera will be positioned on the ground.

Thanks to my mentor Dennis Nienhüser for reviewing my patch 🙂

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