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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"
    />
    <meta name="description" content="Change color of 3D models." />
    <meta name="cesium-sandcastle-labels" content="Showcases" />
    <title>Cesium Demo</title>
    <script type="text/javascript" src="../Sandcastle-header.js"></script>
    <script
      type="text/javascript"
      src="../../../Build/CesiumUnminified/Cesium.js"
      nomodule
    ></script>
    <script type="module" src="../load-cesium-es6.js"></script>
  </head>
  <body
    class="sandcastle-loading"
    data-sandcastle-bucket="bucket-requirejs.html"
  >
    <style>
      @import url(../templates/bucket.css);
      #toolbar {
        background: rgba(42, 42, 42, 0.8);
        padding: 4px;
        border-radius: 4px;
      }
      #toolbar input {
        vertical-align: middle;
        padding-top: 2px;
        padding-bottom: 2px;
      }
      #toolbar .header {
        font-weight: bold;
      }
    </style>
    <div id="cesiumContainer" class="fullSize"></div>
    <div id="loadingOverlay"><h1>Loading...</h1></div>
    <div id="toolbar">
      <table>
        <tbody>
          <tr>
            <td class="header">Model Color</td>
          </tr>
          <tr>
            <td>Mode</td>
            <td>
              <select
                data-bind="options: colorBlendModes, value: colorBlendMode"
              ></select>
            </td>
          </tr>
          <tr>
            <td>Color</td>
            <td><select data-bind="options: colors, value: color"></select></td>
          </tr>
          <tr>
            <td>Alpha</td>
            <td>
              <input
                type="range"
                min="0.0"
                max="1.0"
                step="0.01"
                data-bind="value: alpha, valueUpdate: 'input'"
              />
              <input type="text" size="5" data-bind="value: alpha" />
            </td>
          </tr>
          <tr>
            <td
              data-bind="style: { color: colorBlendAmountEnabled ? '' : 'gray'}"
            >
              Mix
            </td>
            <td>
              <input
                type="range"
                min="0.0"
                max="1.0"
                step="0.01"
                data-bind="value: colorBlendAmount, valueUpdate: 'input', enable: colorBlendAmountEnabled"
              />
              <input
                type="text"
                size="5"
                data-bind="value: colorBlendAmount, enable: colorBlendAmountEnabled"
              />
            </td>
          </tr>
          <tr>
            <td class="header">Model Silhouette</td>
          </tr>
          <tr>
            <td>Color</td>
            <td>
              <select
                data-bind="options: silhouetteColors, value: silhouetteColor"
              ></select>
            </td>
          </tr>
          <tr>
            <td>Alpha</td>
            <td>
              <input
                type="range"
                min="0.0"
                max="1.0"
                step="0.01"
                data-bind="value: silhouetteAlpha, valueUpdate: 'input'"
              />
              <input type="text" size="5" data-bind="value: silhouetteAlpha" />
            </td>
          </tr>
          <tr>
            <td>Size</td>
            <td>
              <input
                type="range"
                min="0.0"
                max="10.0"
                step="0.01"
                data-bind="value: silhouetteSize, valueUpdate: 'input'"
              />
              <input type="text" size="5" data-bind="value: silhouetteSize" />
            </td>
          </tr>
        </tbody>
      </table>
    </div>
    <script id="cesium_sandcastle_script">
      function startup(Cesium) {
        "use strict";
        //Sandcastle_Begin
        var viewer = new Cesium.Viewer("cesiumContainer", {
          infoBox: false,
          selectionIndicator: false,
          shadows: true,
          shouldAnimate: true,
        });

        var entity;

        function getColorBlendMode(colorBlendMode) {
          return Cesium.ColorBlendMode[colorBlendMode.toUpperCase()];
        }

        function getColor(colorName, alpha) {
          var color = Cesium.Color[colorName.toUpperCase()];
          return Cesium.Color.fromAlpha(color, parseFloat(alpha));
        }

        // The viewModel tracks the state of our mini application.
        var viewModel = {
          color: "Red",
          colors: ["White", "Red", "Green", "Blue", "Yellow", "Gray"],
          alpha: 1.0,
          colorBlendMode: "Highlight",
          colorBlendModes: ["Highlight", "Replace", "Mix"],
          colorBlendAmount: 0.5,
          colorBlendAmountEnabled: false,
          silhouetteColor: "Red",
          silhouetteColors: ["Red", "Green", "Blue", "Yellow", "Gray"],
          silhouetteAlpha: 1.0,
          silhouetteSize: 2.0,
        };

        // Convert the viewModel members into knockout observables.
        Cesium.knockout.track(viewModel);

        // Bind the viewModel to the DOM elements of the UI that call for it.
        var toolbar = document.getElementById("toolbar");
        Cesium.knockout.applyBindings(viewModel, toolbar);

        Cesium.knockout
          .getObservable(viewModel, "color")
          .subscribe(function (newValue) {
            entity.model.color = getColor(newValue, viewModel.alpha);
          });

        Cesium.knockout
          .getObservable(viewModel, "alpha")
          .subscribe(function (newValue) {
            entity.model.color = getColor(viewModel.color, newValue);
          });

        Cesium.knockout
          .getObservable(viewModel, "colorBlendMode")
          .subscribe(function (newValue) {
            var colorBlendMode = getColorBlendMode(newValue);
            entity.model.colorBlendMode = colorBlendMode;
            viewModel.colorBlendAmountEnabled =
              colorBlendMode === Cesium.ColorBlendMode.MIX;
          });

        Cesium.knockout
          .getObservable(viewModel, "colorBlendAmount")
          .subscribe(function (newValue) {
            entity.model.colorBlendAmount = parseFloat(newValue);
          });

        Cesium.knockout
          .getObservable(viewModel, "silhouetteColor")
          .subscribe(function (newValue) {
            entity.model.silhouetteColor = getColor(
              newValue,
              viewModel.silhouetteAlpha
            );
          });

        Cesium.knockout
          .getObservable(viewModel, "silhouetteAlpha")
          .subscribe(function (newValue) {
            entity.model.silhouetteColor = getColor(
              viewModel.silhouetteColor,
              newValue
            );
          });

        Cesium.knockout
          .getObservable(viewModel, "silhouetteSize")
          .subscribe(function (newValue) {
            entity.model.silhouetteSize = parseFloat(newValue);
          });

        function createModel(url, height) {
          viewer.entities.removeAll();

          var position = Cesium.Cartesian3.fromDegrees(
            -123.0744619,
            44.0503706,
            height
          );
          var heading = Cesium.Math.toRadians(135);
          var pitch = 0;
          var roll = 0;
          var hpr = new Cesium.HeadingPitchRoll(heading, pitch, roll);
          var orientation = Cesium.Transforms.headingPitchRollQuaternion(
            position,
            hpr
          );

          entity = viewer.entities.add({
            name: url,
            position: position,
            orientation: orientation,
            model: {
              uri: url,
              minimumPixelSize: 128,
              maximumScale: 20000,
              color: getColor(viewModel.color, viewModel.alpha),
              colorBlendMode: getColorBlendMode(viewModel.colorBlendMode),
              colorBlendAmount: parseFloat(viewModel.colorBlendAmount),
              silhouetteColor: getColor(
                viewModel.silhouetteColor,
                viewModel.silhouetteAlpha
              ),
              silhouetteSize: parseFloat(viewModel.silhouetteSize),
            },
          });
          viewer.trackedEntity = entity;
        }

        var options = [
          {
            text: "Aircraft",
            onselect: function () {
              createModel(
                "../../SampleData/models/CesiumAir/Cesium_Air.glb",
                5000.0
              );
            },
          },
          {
            text: "Ground Vehicle",
            onselect: function () {
              createModel(
                "../../SampleData/models/GroundVehicle/GroundVehicle.glb",
                0
              );
            },
          },
          {
            text: "Hot Air Balloon",
            onselect: function () {
              createModel(
                "../../SampleData/models/CesiumBalloon/CesiumBalloon.glb",
                1000.0
              );
            },
          },
          {
            text: "Milk Truck",
            onselect: function () {
              createModel(
                "../../SampleData/models/CesiumMilkTruck/CesiumMilkTruck.glb",
                0
              );
            },
          },
          {
            text: "Skinned Character",
            onselect: function () {
              createModel(
                "../../SampleData/models/CesiumMan/Cesium_Man.glb",
                0
              );
            },
          },
        ];

        Sandcastle.addToolbarMenu(options);

        Sandcastle.addToggleButton("Shadows", viewer.shadows, function (
          checked
        ) {
          viewer.shadows = checked;
        });

        //Sandcastle_End
        Sandcastle.finishedLoading();
      }
      if (typeof Cesium !== "undefined") {
        window.startupCalled = true;
        startup(Cesium);
      }
    </script>
  </body>
</html>

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