CZML Relative Reference Frame

CesiumJS
1

Hi,

I'm trying to use the reference frame property of CZML to define one

object’s position w.r.t. another object using the #id syntax. [1]
Given this simple czml file Cesium only displays the first label and
not the second.

[
    {
        "id": "obj1",
        "position": {
            "referenceFrame": "INERTIAL",
            "cartesian": [6778137.0, 0.0, 0.0]
        },
        "label": {
            "text": "Object 1",
            "show": true
        }
    },
    {
        "id": "obj2",
        "position": {
            "referenceFrame": "#obj1",
            "cartesian": [0.0, 0.0, 0.0]
        },
        "label": {
            "text": "Item 2",
            "show": true
        }
    }
]


Am I using this feature correctly? Is this a Cesium bug?

Thanks,

Evan

[1]
2

Hi,

I had also no luck in specifying positions and orientations relative to another object using the hash symbol followed by the object’s ID. A response regarding/solution for this issue would be appreciated.

Kind regards,
René

3

Unfortunately Cesium doesn’t implement this part of the spec yet, but it should happen soon, I started some work in the referenceFrames branch but have some more pressing 1.0 things that I need to get done first… It should be in the August 1st 1.0 release or the one right after (September 1st).

4

Hi Matthew,

thanks for your answer! Is there any news on that? I was not able to see any changes in the 1.0, 1.1, or 1.2 releases for the relative reference frames.

Kind regards,
René

5

Hi Matthew

I was also trying to use this feature when I faced with your reply in this forum. Do you have any idea about when this "#id" will be working on Cesium?

Thank you very much!

Laercio Barbosa

6

It’s not on our current near term roadmap but we are always willing to look at any pull requests if someone wants to work on it.

7

Hi Mathew!

Any news about this?

Thanks!