Cesium drops CZML objects using "referenceFrame: #id"

[wardev]

I brought this up on the mailing list, but didn't get any response. I'm positing it here because I think it is a bug.

Cesium does not correctly handle the CZML 'referenceFrame' attribute. According to the CZML spec positions can be defined in another object's body fixed frame by specifying a "#reference".

Currently Cesium silently drops any objects that use the "#" syntax for referenceFrame. The CZML file below is a failing test case. When loaded I expected to see "It Works", but I currently only see "Test".

[
    {
        "id": "obj1",
        "position": {
            "referenceFrame": "INERTIAL",
            "cartesian": [6778137.0, 0.0, 0.0]
        },
        "label": {
            "text": "Test",
            "show": true
        }
    },
    {
        "id": "obj2",
        "position": {
            "referenceFrame": "#obj1",
            "cartesian": [0.0, 0.0, 0.0]
        },
        "label": {
            "text": "It Works!",
            "show": true
        }
    }
]

[mramato]

We'll get to this shortly after 1.0, hopefully for the Sep 1st release.

[speigg]

👍