Celestia Forums

Posted: **09.12.2009, 01:19**

I've created the following script of the moon orbiting the earth, with an arrow pointed from the moon to the sun and another arrow pointing at the earth.

Code: Select all

CEL([[{seturl {url "cel://Follow/Sol:Earth/2009-12-09T01:10:12.12924?x=ACHVcPwO5xk&y=AMwjfa0pFGg&z=oJD+b4ze8wI&ow=0.146371&ox=0.281612&oy=0.671824&oz=0.66927&fov=25&ts=1&ltd=0&p=0&rf=268211&lm=0&tsrc=0&ver=3" }}]])
celestia:setambient(0.0)
celestia:settimescale(180000)
refmarktable={}
refmarktable.type="sun direction"
refmarktable.size = 250000
moon=celestia:find("Sol/Earth/Moon")
moon:addreferencemark(refmarktable)
wait(11.0)
refmarktable.type="body to body direction"
earth=celestia:find("Sol/Earth")
refmarktable.target=earth
refmarktable.size = 250000
moon:addreferencemark(refmarktable)
celestia:settimescale(180000)
wait(14.0)
-- refmarktable.type="sun direction"
-- moon:removereferencemark(refmarktable.type)
-- refmarktable.type="body to body direction"
-- moon:removereferencemark(refmarktable.type)

The trouble is the arrows keep disappearing and reappearing as the moon orbits the earth.

Does anyone have a solution for this?

Sean

Posted: **12.12.2009, 10:37**

Indeed strange rendering behaviour of the referencemarkers.
As far as I can detect it has something to do with the combination of the size of the referencemarkers and the distance to the object.
When you come closer to the Moon, the referencemarkers will stay rendered and that is even the case when you get further away from the Moon. So indeed, there is a region where the rendering of this size referencemarkers is alternately rendered and not rendered.

This only seems a circumvention to me. It's not the solution for the real problem.

Marco

Celestia Forums

Using refmarktable

Using refmarktable

Re: Using refmarktable