Comments for Cesium KML-CZML Editor

[sethjensen1]

Comments for https://www.endpointdev.com/blog/2020/12/cesium-kml-czml-editor/
By Dmitry Kiselev

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[alphafox02]

Not so much an issue, not even sure if this is the correct place to leave this, but I'm wondering if the KML-CZML Editor can change Opacity like Google Earth? I've not found the option. I have KMLs that show the radio freq coverage of an antenna and when I overlay it with your tool it's a solid image with the varies colors covering all that's underneath. In Google Earth I can change the opacity to have a peak at what's underneath while still seeing the shaded colors.

Thanks!

[kiselev-dv]

Hi @alphafox02 It can for polygons and polylines, just change color opacity.

[alphafox02]

Nice, I think this is just a flat image. I don’t see those options available. I’ll keep trying.

[kiselev-dv]

Can you attach KML with example?

[ckoval7]

A flat image shows up as a rectangle, which also has a color property. This can be changed on the fly without reloading the entity.

function loadImageKml(url) {
  kmlsrc = new Cesium.KmlDataSource();
  kmlsrc.load(url);
// Selects the first entity (assuming it's an image) and changes it's opacity to 0.25
// Leave R, G, B set to 1
  kmlsrc.entities.values[0].rectangle.material.color = new Cesium.Color(1, 1, 1, 0.25);
  return kmlsrc;
}