Picks the color of a pixel from a cesium viewer canvas.

PickPixel

var viewer = new Cesium.Viewer('cesiumContainer');

var scene = viewer.scene;
var context = scene.context;

var readColor = false;
scene.postRender.addEventListener(function() {
    if (readColor) {
        readColor = false;
        
        var pixels = context.readPixels({
            x : 0,
            y : 0,
            width : 1,
            height : 1
        });
        console.log(pixels);
    }
});

Sandcastle.addToolbarButton('Get Color', function() {
    readColor = true;
});