new arrow and circle markers / marker alpha

The place to discuss creating, porting and modifying Celestia's source code.
ElChristou
Developer
Posts: 3776
Joined: 04.02.2005
With us: 19 years 9 months

Post #21by ElChristou » 19.05.2007, 00:32

chris wrote:
ElChristou wrote:Yep I also agree, but here seems we are again in front of a depth sorting problem... :x

The problem is that I've never bothered trying to implement depth sorting for markers. It's on my development roadmap, along with text labels and reference frames for markers.

--Chris


Reference frames for markers... You have a particular application in mind?
Image

Avatar
Cham M
Posts: 4324
Joined: 14.01.2004
Age: 60
With us: 20 years 10 months
Location: Montreal

Post #22by Cham » 19.05.2007, 00:34

ElChristou wrote:Reference frames for markers... You have a particular application in mind?


Hehehe : obvious : floating text in space !
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

ElChristou
Developer
Posts: 3776
Joined: 04.02.2005
With us: 19 years 9 months

Post #23by ElChristou » 19.05.2007, 00:55

So the plan is to have a kind of text marker? One would write the text in a ssc and it would be applyied as a marker in Celestia?
Image

Avatar
Cham M
Posts: 4324
Joined: 14.01.2004
Age: 60
With us: 20 years 10 months
Location: Montreal

Post #24by Cham » 19.05.2007, 00:59

This may open the door to a lot of possibilities. Could be usefull on the educational side.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

chris
Site Admin
Posts: 4211
Joined: 28.01.2002
With us: 22 years 9 months
Location: Seattle, Washington, USA

Post #25by chris » 19.05.2007, 01:03

ElChristou wrote:
chris wrote:
ElChristou wrote:Yep I also agree, but here seems we are again in front of a depth sorting problem... :x

The problem is that I've never bothered trying to implement depth sorting for markers. It's on my development roadmap, along with text labels and reference frames for markers.

--Chris

Reference frames for markers... You have a particular application in mind?


I'd like markers to be more general than they are now. Right now, you can only place a marker on the center of an object. I'd like to change it so that a marker can be placed anywhere in space, whether there's an object there or not. Imagine a script that uses markers to label significant mission events on a spacecraft trajectory or points on a ground track (expressed as positions in a planets body-fixed reference frame.) Or the equinox and solstice on the Earth's orbit. Or positions of Earth's north celestial pole as it precesses over thousands of years.

--Chris

ElChristou
Developer
Posts: 3776
Joined: 04.02.2005
With us: 19 years 9 months

Post #26by ElChristou » 19.05.2007, 02:06

chris wrote:I'd like markers to be more general than they are now. Right now, you can only place a marker on the center of an object. I'd like to change it so that a marker can be placed anywhere in space, whether there's an object there or not. Imagine a script that uses markers to label significant mission events on a spacecraft trajectory or points on a ground track (expressed as positions in a planets body-fixed reference frame.) Or the equinox and solstice on the Earth's orbit. Or positions of Earth's north celestial pole as it precesses over thousands of years.


Ok, got it know... A cool feature then would be the possibility to add a legend on a marker...
Image

Guckytos
Posts: 439
Joined: 01.06.2004
With us: 20 years 5 months
Location: Germany

Post #27by Guckytos » 19.05.2007, 17:54

ElChristou wrote:
chris wrote:I'd like markers to be more general than they are now. Right now, you can only place a marker on the center of an object. I'd like to change it so that a marker can be placed anywhere in space, whether there's an object there or not. Imagine a script that uses markers to label significant mission events on a spacecraft trajectory or points on a ground track (expressed as positions in a planets body-fixed reference frame.) Or the equinox and solstice on the Earth's orbit. Or positions of Earth's north celestial pole as it precesses over thousands of years.

Ok, got it know... A cool feature then would be the possibility to add a legend on a marker...


Sounds good.

Would it then also be possible to include an URL into the legend/marker? So you could link to the web or somewhere local.
That would be very, very nice for educational activities, i think.


Return to “Development”