Add existing to tracked

node_modules/cesium/Source/Widgets/Timeline/Timeline.css

@@ -0,0 +1,114 @@
+.cesium-timeline-main {
+  position: relative;
+  left: 0;
+  bottom: 0;
+  overflow: hidden;
+  border: solid 1px #888;
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none;
+  user-select: none;
+}
+
+.cesium-timeline-trackContainer {
+  width: 100%;
+  overflow: auto;
+  border-top: solid 1px #888;
+  position: relative;
+  top: 0;
+  left: 0;
+}
+
+.cesium-timeline-tracks {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+}
+
+.cesium-timeline-needle {
+  position: absolute;
+  left: 0;
+  top: 1.7em;
+  bottom: 0;
+  width: 1px;
+  background: #f00;
+}
+
+.cesium-timeline-bar {
+  position: relative;
+  left: 0;
+  top: 0;
+  overflow: hidden;
+  cursor: pointer;
+  width: 100%;
+  height: 1.7em;
+  background: linear-gradient(
+    to bottom,
+    rgba(116, 117, 119, 0.8) 0%,
+    rgba(58, 68, 82, 0.8) 11%,
+    rgba(46, 50, 56, 0.8) 46%,
+    rgba(53, 53, 53, 0.8) 81%,
+    rgba(53, 53, 53, 0.8) 100%
+  );
+}
+
+.cesium-timeline-ruler {
+  /* NOTE: The label and the ruler must use the same font/size */
+  visibility: hidden;
+  white-space: nowrap;
+  font-size: 80%;
+  z-index: -200;
+}
+
+.cesium-timeline-highlight {
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  background: #08f;
+}
+
+.cesium-timeline-ticLabel {
+  position: absolute;
+  top: 0;
+  left: 0;
+  white-space: nowrap;
+  font-size: 80%;
+  color: #eee;
+}
+
+.cesium-timeline-ticMain {
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  width: 1px;
+  height: 50%;
+  background: #eee;
+}
+
+.cesium-timeline-ticSub {
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  width: 1px;
+  height: 33%;
+  background: #aaa;
+}
+
+.cesium-timeline-ticTiny {
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  width: 1px;
+  height: 25%;
+  background: #888;
+}
+
+.cesium-timeline-icon16 {
+  display: block;
+  position: absolute;
+  width: 16px;
+  height: 16px;
+  background-image: url("../Images/TimelineIcons.png");
+  background-repeat: no-repeat;
+}

node_modules/cesium/Source/Widgets/Timeline/lighter.css

@@ -0,0 +1,20 @@
+.cesium-lighter .cesium-timeline-bar {
+  background: linear-gradient(to bottom, #eeeeee 0%, #ffffff 50%, #fafafa 100%);
+}
+
+.cesium-lighter .cesium-timeline-ticLabel {
+  color: #000;
+}
+
+.cesium-lighter .cesium-timeline-ticMain {
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  width: 1px;
+  height: 50%;
+  background: #000;
+}
+
+.cesium-lighter .cesium-timeline-ticSub {
+  background: #444;
+}