splitLongitude produces NaN texture coordinates

worldRectangle = scene.primitives.add(new Cesium.Primitive({
        geometryInstances : new Cesium.GeometryInstance({
            geometry : new Cesium.RectangleGeometry({
                rectangle : Cesium.Rectangle.fromDegrees(-180.0, -90.0, 180.0, 90.0),
                vertexFormat : Cesium.EllipsoidSurfaceAppearance.VERTEX_FORMAT
            })
        }),
        appearance : new Cesium.EllipsoidSurfaceAppearance({
            aboveGround : false
        }),
        show : false
    }));

I’ve discovered that the texture coordinates attribute has NaN’s in it. If I put the following check in Source/Core/AttributeCompression.js everything works fine:

https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Source/Core/AttributeCompression.js#L308-L316

if (isNaN(textureCoordinates.x) || isNaN(textureCoordinates.y)) {
       return 0;
}

[hpinkos]

We have so many problems caused by that splitLongitude function. @OmarShehata keep poking around at it and let me know if you get stuck. My guess would be something’s going weird in this function: https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Source/Core/GeometryPipeline.js#L1919

[hpinkos]

Just kidding, the GroundPrimitive texture thing is unrelated to splitLongitude. I’m going to open a separate issue. We’ll keep this one for fixing the NaN thing.