Blend the style color with the texture of PLATEAU buildings

Comparing HIGHLIGHT, MIX and REPLACE, which combine the Tiles3DStyle color with the texture of PLATEAU Taito buildings.

plateau_blend_modes.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Blend the style color with the texture of PLATEAU buildings</title>
  <meta property="og:description" content="Comparing HIGHLIGHT, MIX and REPLACE, which combine the Tiles3DStyle color with the texture of PLATEAU Taito buildings." />
  <script src="./v0.10.7/mapray.min.js"></script>
  <script src="./v0.10.7/maprayui.min.js"></script>
  <link rel="stylesheet" href="./v0.10.7/mapray.css">
  <style>
    body {margin: 0; padding: 0;}
    html, body, div#mapray-container { height: 100%; }
    .map-overlay {
        font: 12px/20px "Robot", sans-serif;
        position: absolute;
        width: 300px;
        top: 0;
        left: 0;
        padding: 10px;
    }
    .map-overlay .map-overlay-inner {
        background-color: #fff;
        color: #000;
        box-shadow: 0 1px 2px rgba(0,0,0,0.1);
        border-radius: 3px;
        padding: 10px;
        margin-bottom: 10px;
    }
    .map-overlay-inner fieldset {
        border: none;
        padding: 0;
        margin: 0 0 10px;
    }
    .map-overlay-inner fieldset:last-child {
        margin: 0;
    }
    .map-overlay-inner label {
        display: block;
        font-weight: bold;
        margin: 0 0 5px;
    }
    .map-overlay-inner select, .map-overlay-inner input[type=range] {
        width: 100%;
    }
  </style>
</head>
<body>
<div id="mapray-container"></div>
<div class="map-overlay top">
    <div class="map-overlay-inner">
        <fieldset>
            <label>Blend mode</label>
            <label style="font-weight: normal"><input type="radio" name="mode" value="HIGHLIGHT" checked> HIGHLIGHT (multiply the texture)</label>
            <label style="font-weight: normal"><input type="radio" name="mode" value="MIX"> MIX (blend with the texture)</label>
            <label style="font-weight: normal"><input type="radio" name="mode" value="REPLACE"> REPLACE (ignore the texture)</label>
        </fieldset>
        <fieldset>
            <label>MIX amount: <span id="amount_value"></span></label>
            <input id="amount_slider" type="range" min="0" max="1" step="0.05" value="0.5">
        </fieldset>
    </div>
</div>
</body>
</html>
<script>
  // Colors the Taito buildings that are 30 m or taller red, and compares the three ways of combining that color with the texture.
  const HEIGHT = "bldg:measuredHeight";
  // A missing attribute is undefined in 3D Tiles 1.1 and null in 3D Tiles 1.0, and a comparison with either is a type error.
  const present = key => "${" + key + "} !== undefined && ${" + key + "} !== null";

  const STYLE = {
      color: { conditions: [
          [ present( HEIGHT ) + " && ${" + HEIGHT + "} >= 30", "color('#ff3030')" ],
          [ "true",                                            "color('#ffffff')" ],
      ] },
  };

  const cloudApi = new mapray.cloud.CloudApiV2({
        tokenType: mapray.cloud.CloudApi.TokenType.ACCESS_TOKEN,
        token: "<YOUR_MAPRAY_ACCESS_TOKEN>"
    });
    // The StandardUIView in the ui package includes mouse-based camera manipulation.
    const uiviewer = new maprayui.StandardUIViewer( "mapray-container", {
        dem_provider: new mapray.StandardDemProvider( cloudApi.getDefaultDemAsResource() ),
        atmosphere: new mapray.Atmosphere()
    } );
  // Around Asakusa in Tokyo JP
  uiviewer.setCameraPosition({
    longitude: 139.7955,
    latitude: 35.7085,
    height: 500
  });
  // Senso-ji
  uiviewer.setLookAtPosition({
    longitude: 139.7967,
    latitude: 35.7148,
    height: 30
  });
  // PLATEAU Taito-ku buildings, LOD2 with textures (OGC 3D Tiles 1.1: glTF content with EXT_structural_metadata)
  const provider = new mapray.StandardTiles3DProvider({
    url: "https://assets.cms.plateau.reearth.io/assets/75/76c6bc-df54-4bf4-a869-b513526b5bd2/13106_taito-ku_city_2025_citygml_1_op_bldg_3dtiles_lod2/tileset.json"
  }, {
    // PLATEAU tiles carry no copyright string, so credit the dataset as the PLATEAU terms of use require (Public Data License 1.0, compatible with CC BY 4.0).
    attributions: [ "出典：「3D都市モデル（Project PLATEAU）台東区（2025年度）」（国土交通省）" ]
  });
  const scene = uiviewer.viewer.b3d_collection.createTiles3DScene(provider, {
    show_attributions: true,
    vertical_offset: -37   // ellipsoidal height to elevation (geoid undulation around Tokyo)
  });

  scene.setStyle( mapray.Tiles3DStyle.fromJson( STYLE ) );

  const amount_slider = document.getElementById( 'amount_slider' );

  function applyMode() {
      const mode = document.querySelector( 'input[name="mode"]:checked' ).value;
      scene.setStyleColorBlendMode( mapray.Tiles3DScene.StyleColorBlendMode[mode] );
      // The amount is used by MIX only: 0 keeps the original color and 1 is the style color.
      scene.setStyleColorBlendAmount( Number( amount_slider.value ) );
      document.getElementById( 'amount_value' ).textContent = amount_slider.value;
      amount_slider.disabled = mode !== "MIX";
  }
  for ( const radio of document.querySelectorAll( 'input[name="mode"]' ) ) {
      radio.addEventListener( 'change', applyMode );
  }
  amount_slider.addEventListener( 'input', applyMode );
  applyMode();
</script>

Info

このサンプルコードは、<YOUR_MAPRAY_ACCESS_TOKEN>を、あなたのMapray CloudのアカウントのOrganization Tokenに置き換えるまで、期待通りに動作しません。