1121 lines
57 KiB
HTML
1121 lines
57 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>TileAvailability - Cesium Documentation</title>
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<!--[if lt IE 9]>
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<script src="javascript/html5.js"></script>
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<![endif]-->
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<link href="styles/jsdoc-default.css" rel="stylesheet">
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<link href="styles/prism.css" rel="stylesheet">
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</head>
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<body>
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<div id="main">
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<h1 class="page-title">
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<a href="index.html"><img src="Images/CesiumLogo.png" class="cesiumLogo"></a>
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TileAvailability
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<div class="titleCenterer"></div>
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</h1>
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<section>
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<header>
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</header>
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<article>
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<div class="container-overview">
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<div class="nameContainer">
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<h4 class="name" id="TileAvailability">
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<a href="#TileAvailability" class="doc-link"></a>
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new Cesium.TileAvailability<span class="signature">(tilingScheme, maximumLevel)</span>
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<div class="source-link rightLinks">
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<a href="https://github.com/AnalyticalGraphicsInc/cesium/blob/1.58/Source/Core/TileAvailability.js#L26">Core/TileAvailability.js 26</a>
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</div>
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</h4>
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</div>
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<div class="description">
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Reports the availability of tiles in a <a href="TilingScheme.html"><code>TilingScheme</code></a>.
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</div>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>tilingScheme</code></td>
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<td class="type">
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<span class="param-type"><a href="TilingScheme.html">TilingScheme</a></span>
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</td>
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<td class="description last">
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The tiling scheme in which to report availability.</td>
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</tr>
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<tr>
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<td class="name"><code>maximumLevel</code></td>
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<td class="type">
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<span class="param-type">Number</span>
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</td>
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<td class="description last">
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The maximum tile level that is potentially available.</td>
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</tr>
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</tbody>
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</table>
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<dl class="details">
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</dl>
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</div>
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<h3 class="subsection-title">Methods</h3>
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<div class="nameContainer">
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<h4 class="name" id="addAvailableTileRange">
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<a href="#addAvailableTileRange" class="doc-link"></a>
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addAvailableTileRange<span class="signature">(level, startX, startY, endX, endY)</span>
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<div class="source-link rightLinks">
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<a href="https://github.com/AnalyticalGraphicsInc/cesium/blob/1.58/Source/Core/TileAvailability.js#L57">Core/TileAvailability.js 57</a>
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</div>
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</h4>
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</div>
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<div class="description">
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Marks a rectangular range of tiles in a particular level as being available. For best performance,
add your ranges in order of increasing level.
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</div>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>level</code></td>
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<td class="type">
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<span class="param-type">Number</span>
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</td>
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<td class="description last">
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The level.</td>
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</tr>
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<tr>
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<td class="name"><code>startX</code></td>
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<td class="type">
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<span class="param-type">Number</span>
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</td>
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<td class="description last">
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The X coordinate of the first available tiles at the level.</td>
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</tr>
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<tr>
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<td class="name"><code>startY</code></td>
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<td class="type">
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<span class="param-type">Number</span>
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</td>
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<td class="description last">
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The Y coordinate of the first available tiles at the level.</td>
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</tr>
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<tr>
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<td class="name"><code>endX</code></td>
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<td class="type">
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<span class="param-type">Number</span>
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</td>
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<td class="description last">
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The X coordinate of the last available tiles at the level.</td>
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</tr>
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<tr>
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<td class="name"><code>endY</code></td>
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<td class="type">
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<span class="param-type">Number</span>
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</td>
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<td class="description last">
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The Y coordinate of the last available tiles at the level.</td>
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</tr>
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</tbody>
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</table>
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<dl class="details">
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</dl>
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<div class="nameContainer">
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<h4 class="name" id="computeBestAvailableLevelOverRectangle">
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<a href="#computeBestAvailableLevelOverRectangle" class="doc-link"></a>
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computeBestAvailableLevelOverRectangle<span class="signature">(rectangle)</span> → <span class="type-signature returnType">Number</span>
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<div class="source-link rightLinks">
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<a href="https://github.com/AnalyticalGraphicsInc/cesium/blob/1.58/Source/Core/TileAvailability.js#L131">Core/TileAvailability.js 131</a>
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</div>
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</h4>
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</div>
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<div class="description">
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Finds the most detailed level that is available _everywhere_ within a given rectangle. More detailed
tiles may be available in parts of the rectangle, but not the whole thing. The return value of this
function may be safely passed to <a href="sampleTerrain.html"><code>sampleTerrain</code></a> for any position within the rectangle. This function
usually completes in time logarithmic to the number of rectangles added with
<a href="TileAvailability.html#addAvailableTileRange"><code>TileAvailability#addAvailableTileRange</code></a>.
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</div>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>rectangle</code></td>
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<td class="type">
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<span class="param-type"><a href="Rectangle.html">Rectangle</a></span>
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</td>
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<td class="description last">
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The rectangle.</td>
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</tr>
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</tbody>
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</table>
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<h5>Returns:</h5>
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<div class="param-desc">
|
||
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The best available level for the entire rectangle.
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</div>
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|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="nameContainer">
|
||
|
|
<h4 class="name" id="computeChildMaskForTile">
|
||
|
|
<a href="#computeChildMaskForTile" class="doc-link"></a>
|
||
|
|
computeChildMaskForTile<span class="signature">(level, x, y)</span> → <span class="type-signature returnType">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="source-link rightLinks">
|
||
|
|
<a href="https://github.com/AnalyticalGraphicsInc/cesium/blob/1.58/Source/Core/TileAvailability.js#L197">Core/TileAvailability.js 197</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</h4>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="description">
|
||
|
|
Computes a bit mask indicating which of a tile's four children exist.
If a child's bit is set, a tile is available for that child. If it is cleared,
the tile is not available. The bit values are as follows:
<table>
<tr><th>Bit Position</th><th>Bit Value</th><th>Child Tile</th></tr>
<tr><td>0</td><td>1</td><td>Southwest</td></tr>
<tr><td>1</td><td>2</td><td>Southeast</td></tr>
<tr><td>2</td><td>4</td><td>Northwest</td></tr>
<tr><td>3</td><td>8</td><td>Northeast</td></tr>
</table>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<table class="params">
|
||
|
|
<thead>
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<th>Name</th>
|
||
|
|
|
||
|
|
|
||
|
|
<th>Type</th>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<th class="last">Description</th>
|
||
|
|
</tr>
|
||
|
|
</thead>
|
||
|
|
|
||
|
|
<tbody>
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>level</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The level of the parent tile.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>x</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The X coordinate of the parent tile.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>y</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The Y coordinate of the parent tile.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Returns:</h5>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
The bit mask indicating child availability.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="nameContainer">
|
||
|
|
<h4 class="name" id="computeMaximumLevelAtPosition">
|
||
|
|
<a href="#computeMaximumLevelAtPosition" class="doc-link"></a>
|
||
|
|
computeMaximumLevelAtPosition<span class="signature">(position)</span> → <span class="type-signature returnType">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="source-link rightLinks">
|
||
|
|
<a href="https://github.com/AnalyticalGraphicsInc/cesium/blob/1.58/Source/Core/TileAvailability.js#L98">Core/TileAvailability.js 98</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</h4>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="description">
|
||
|
|
Determines the level of the most detailed tile covering the position. This function
usually completes in time logarithmic to the number of rectangles added with
<a href="TileAvailability.html#addAvailableTileRange"><code>TileAvailability#addAvailableTileRange</code></a>.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<table class="params">
|
||
|
|
<thead>
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<th>Name</th>
|
||
|
|
|
||
|
|
|
||
|
|
<th>Type</th>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<th class="last">Description</th>
|
||
|
|
</tr>
|
||
|
|
</thead>
|
||
|
|
|
||
|
|
<tbody>
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>position</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type"><a href="Cartographic.html">Cartographic</a></span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The position for which to determine the maximum available level. The height component is ignored.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Returns:</h5>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
The level of the most detailed tile covering the position.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Throws:</h5>
|
||
|
|
<ul>
|
||
|
|
<li>
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
|
||
|
|
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
|
||
|
|
|
||
|
|
: If position is outside any tile according to the tiling scheme.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="nameContainer">
|
||
|
|
<h4 class="name" id="isTileAvailable">
|
||
|
|
<a href="#isTileAvailable" class="doc-link"></a>
|
||
|
|
isTileAvailable<span class="signature">(level, x, y)</span> → <span class="type-signature returnType">Boolean</span>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="source-link rightLinks">
|
||
|
|
<a href="https://github.com/AnalyticalGraphicsInc/cesium/blob/1.58/Source/Core/TileAvailability.js#L169">Core/TileAvailability.js 169</a>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
</h4>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="description">
|
||
|
|
Determines if a particular tile is available.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<table class="params">
|
||
|
|
<thead>
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<th>Name</th>
|
||
|
|
|
||
|
|
|
||
|
|
<th>Type</th>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<th class="last">Description</th>
|
||
|
|
</tr>
|
||
|
|
</thead>
|
||
|
|
|
||
|
|
<tbody>
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>level</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The tile level to check.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>x</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The X coordinate of the tile to check.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
|
||
|
|
<td class="name"><code>y</code></td>
|
||
|
|
|
||
|
|
|
||
|
|
<td class="type">
|
||
|
|
|
||
|
|
|
||
|
|
<span class="param-type">Number</span>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</td>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<td class="description last">
|
||
|
|
|
||
|
|
The Y coordinate of the tile to check.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h5>Returns:</h5>
|
||
|
|
|
||
|
|
|
||
|
|
<div class="param-desc">
|
||
|
|
True if the tile is available; otherwise, false.
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<dl class="details">
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
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