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<title data-rh="true">PixelBuffer | DeviceScript</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://microsoft.github.io/devicescript/api/runtime/pixelbuffer"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="current"><meta data-rh="true" name="docusaurus_tag" content="docs-default-current"><meta data-rh="true" name="docsearch:version" content="current"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-current"><meta data-rh="true" property="og:title" content="PixelBuffer | DeviceScript"><meta data-rh="true" name="description" content="A 1D color vector to support color manipulation of LED strips. All colors are 24bit RGB colors."><meta data-rh="true" property="og:description" content="A 1D color vector to support color manipulation of LED strips. All colors are 24bit RGB colors."><link data-rh="true" rel="icon" href="/devicescript/img/favicon.svg"><link data-rh="true" rel="canonical" href="https://microsoft.github.io/devicescript/api/runtime/pixelbuffer"><link data-rh="true" rel="alternate" href="https://microsoft.github.io/devicescript/api/runtime/pixelbuffer" hreflang="en"><link data-rh="true" rel="alternate" href="https://microsoft.github.io/devicescript/api/runtime/pixelbuffer" hreflang="x-default"><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.13.24/dist/katex.min.css" integrity="sha384-odtC+0UGzzFL/6PNoE8rX/SPcQDXBJ+uRepguP4QkPCm2LBxH3FA3y+fKSiJ+AmM" crossorigin="anonymous"><link rel="stylesheet" href="/devicescript/assets/css/styles.83f5432f.css">
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itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/devicescript/api/runtime"><span itemprop="name">Runtime</span></a><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">PixelBuffer</span><meta itemprop="position" content="3"></li></ul></nav><div class="tocCollapsible_wXna theme-doc-toc-mobile tocMobile_Ojys"><button type="button" class="clean-btn tocCollapsibleButton_iI2p">On this page</button></div><div class="theme-doc-markdown markdown"><h1>PixelBuffer</h1><p>A 1D color vector to support color manipulation of LED strips. All colors are 24bit RGB colors.</p><p>The pixel buffer is typically accessed through a <a href="/devicescript/api/clients/led">Led</a> client.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> Led </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/core"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/runtime"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> led </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">new</span><span class="token plain"> </span><span class="token class-name" style="color:#116329">Led</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> pixels </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">buffer</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>It can also be allocated using <code>pixelBuffer</code>.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> PixelBuffer </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/runtime"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> pixels </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> PixelBuffer</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">alloc</span><span class="token punctuation" style="color:#393A34">(</span><span class="token number" style="color:#005CC5">32</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="usage">Usage<a href="#usage" class="hash-link" aria-label="Direct link to Usage" title="Direct link to Usage"></a></h2><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="at-setat"><code>at</code>, <code>setAt</code><a href="#at-setat" class="hash-link" aria-label="Direct link to at-setat" title="Direct link to at-setat"></a></h3><p>Indexing functions similar to <code>Array.at</code>, they allow to set color of individual LEDs and support negative indices.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> c0 </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> pixels</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">at</span><span class="token punctuation" style="color:#393A34">(</span><span class="token number" style="color:#005CC5">0</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">setAt</span><span class="token punctuation" style="color:#393A34">(</span><span class="token number" style="color:#005CC5">1</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> c0</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="clear"><code>clear</code><a href="#clear" class="hash-link" aria-label="Direct link to clear" title="Direct link to clear"></a></h3><p>Clears all colors to <code>#000000</code>.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">clear</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="view"><code>view</code><a href="#view" class="hash-link" aria-label="Direct link to view" title="Direct link to view"></a></h3><p>Creates a aliased range view of the buffer so that you can apply operations on a subset of the colors.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> view </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> pixels</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">view</span><span class="token punctuation" style="color:#393A34">(</span><span class="token number" style="color:#005CC5">5</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token number" style="color:#005CC5">10</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">view</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">clear</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="correctgamma"><code>correctGamma</code><a href="#correctgamma" class="hash-link" aria-label="Direct link to correctgamma" title="Direct link to correctgamma"></a></h3><p>Applies gamma correction to compensate LED and eye perception</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">correctGamma</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="rotate"><code>rotate</code><a href="#rotate" class="hash-link" aria-label="Direct link to rotate" title="Direct link to rotate"></a></h3><p>Shifts the colors in the buffer by the given offset. Use a negative offset to shift right.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">rotate</span><span class="token punctuation" style="color:#393A34">(</span><span class="token operator" style="color:#D73A49">-</span><span class="token number" style="color:#005CC5">1</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="helpers">Helpers<a href="#helpers" class="hash-link" aria-label="Direct link to Helpers" title="Direct link to Helpers"></a></h2><p>Here are a few helpers built for <code>PixelBuffer</code>, but many others could be added!</p><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="fillsolid"><code>fillSolid</code><a href="#fillsolid" class="hash-link" aria-label="Direct link to fillsolid" title="Direct link to fillsolid"></a></h3><p>This helper function assigns the given color to the entire range.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> Led </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/core"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> fillSolid </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/runtime"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> led </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">new</span><span class="token plain"> </span><span class="token class-name" style="color:#116329">Led</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> pixels </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">buffer</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#8250DF">fillSolid</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token number" style="color:#005CC5">0x00_ff_00</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">show</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="fillrainbow"><code>fillRainbow</code><a href="#fillrainbow" class="hash-link" aria-label="Direct link to fillrainbow" title="Direct link to fillrainbow"></a></h3><p>Fills the buffer by interpolating the hue of <code>hsv</code> colors.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> Led </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/core"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> fillRainbow </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/runtime"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> led </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">new</span><span class="token plain"> </span><span class="token class-name" style="color:#116329">Led</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> pixels </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">buffer</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#8250DF">fillRainbow</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">show</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the helper interpolates between <code>0</code> and <code>0xff</code>,
but this can be changed with optional parameters.</p><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="fillgradient"><code>fillGradient</code><a href="#fillgradient" class="hash-link" aria-label="Direct link to fillgradient" title="Direct link to fillgradient"></a></h3><p>Fills with a linear interpolation of two colors across the RGB space.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> Led </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/core"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> fillGradient </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/runtime"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> led </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">new</span><span class="token plain"> </span><span class="token class-name" style="color:#116329">Led</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> pixels </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">buffer</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#8250DF">fillGradient</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token number" style="color:#005CC5">0x00_ff_00</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token number" style="color:#005CC5">0x00_00_ff</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> circular</span><span class="token operator" style="color:#D73A49">:</span><span class="token plain"> </span><span class="token boolean" style="color:#005CC5">true</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">show</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="fillpalette"><code>fillPalette</code><a href="#fillpalette" class="hash-link" aria-label="Direct link to fillpalette" title="Direct link to fillpalette"></a></h3><p>Fills by interpolating the colors of a palette.</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> Led </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/core"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> Palette </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/graphics"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> fillPalette </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/runtime"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> led </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">new</span><span class="token plain"> </span><span class="token class-name" style="color:#116329">Led</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> pixels </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">buffer</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> palette </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> Palette</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">arcade</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#8250DF">fillPalette</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> palette</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">show</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_pMLv" id="fillbargraph"><code>fillBarGraph</code><a href="#fillbargraph" class="hash-link" aria-label="Direct link to fillbargraph" title="Direct link to fillbargraph"></a></h3><p>A tiny bar chart engine to render on a value on a LED strip</p><div class="language-ts codeBlockContainer_mQmQ theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_D5yF"><pre tabindex="0" class="prism-code language-ts codeBlock_RMoD thin-scrollbar"><code class="codeBlockLines_AclH"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> Led </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/core"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> fillBarGraph </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">from</span><span class="token plain"> </span><span class="token string" style="color:#C6105F">"@devicescript/runtime"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> led </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">new</span><span class="token plain"> </span><span class="token class-name" style="color:#116329">Led</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> pixels </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">buffer</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> current </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token number" style="color:#005CC5">25</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">const</span><span class="token plain"> max </span><span class="token operator" style="color:#D73A49">=</span><span class="token plain"> </span><span class="token number" style="color:#005CC5">100</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#8250DF">fillBarGraph</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">pixels</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> current</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> max</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#CF222E">await</span><span class="token plain"> led</span><span class="token punctuation" style="color:#393A34">.</span><span class="token function" style="color:#8250DF">show</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup_aaMX"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_z5j7" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_FoOz"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_L0B6"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/devicescript/api/runtime/palette"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Palette</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/devicescript/api/runtime/schedule"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">schedule</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_XG6w thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#usage" class="table-of-contents__link toc-highlight">Usage</a><ul><li><a href="#at-setat" class="table-of-contents__link toc-highlight"><code>at</code>, <code>setAt</code></a></li><li><a href="#clear" class="table-of-contents__link toc-highlight"><code>clear</code></a></li><li><a href="#view" class="table-of-contents__link toc-highlight"><code>view</code></a></li><li><a href="#correctgamma" class="table-of-contents__link toc-highlight"><code>correctGamma</code></a></li><li><a href="#rotate" class="table-of-contents__link toc-highlight"><code>rotate</code></a></li></ul></li><li><a href="#helpers" class="table-of-contents__link toc-highlight">Helpers</a><ul><li><a href="#fillsolid" class="table-of-contents__link toc-highlight"><code>fillSolid</code></a></li><li><a href="#fillrainbow" class="table-of-contents__link toc-highlight"><code>fillRainbow</code></a></li><li><a href="#fillgradient" class="table-of-contents__link toc-highlight"><code>fillGradient</code></a></li><li><a href="#fillpalette" class="table-of-contents__link toc-highlight"><code>fillPalette</code></a></li><li><a href="#fillbargraph" class="table-of-contents__link toc-highlight"><code>fillBarGraph</code></a></li></ul></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Docs</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/devicescript/intro">Introduction</a></li><li class="footer__item"><a 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