@ccp-nc/crystvis-js

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A Three.js based crystallographic visualisation tool

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href="tutorial-ThreejsMigration.html">ThreejsMigration</a></div></div></div></div></div><div class="navbar-container" id="VuAckcnZhf"><nav class="navbar"><div class="navbar-left-items"></div><div class="navbar-right-items"><div class="navbar-right-item"><button class="icon-button search-button" aria-label="open-search"><svg><use xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" xlink:href="#light-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div><nav></nav></nav></div><div class="toc-container"><div class="toc-content"><span class="bold">On this page</span><div id="eed4d2a0bfd64539bb9df78095dec881"></div></div></div><div class="body-wrapper"><div class="main-content"><div class="main-wrapper"><section><header><h2>ThreejsMigration</h2></header><article><h1>Three.js Migration Notes</h1><h2>Upgrade from Three.js 0.137 to 0.178</h2><p>With the release of version 0.6.0, <code>crystvis-js</code> has been updated to use Three.js 0.178 (from the previous version 0.137). This represents a significant upgrade with several important changes that developers should be aware of.</p><h3>Key Changes</h3><ol><li><p><strong>Color Management</strong>:</p><ul><li>Three.js has changed how colors are handled between versions</li><li>Colors are now handled in the sRGB color space by default with more strict enforcement</li><li>Color methods like <code>getHex()</code> now return values in sRGB color space</li><li>Use <code>renderer.outputColorSpace = THREE.SRGBColorSpace</code> (replaces older <code>outputEncoding = THREE.sRGBEncoding</code>)</li></ul></li><li><p><strong>Shader Compatibility</strong>:</p><ul><li>GLSL shaders now require explicit version declarations through the <code>glslVersion</code> parameter</li><li>When using <code>RawShaderMaterial</code> with GLSL 3.0, you must specify <code>glslVersion: THREE.GLSL3</code></li><li>The <code>#version</code> directive should not be included manually in the shader code when using <code>glslVersion</code>, as Three.js will inject it automatically</li><li>Including your own <code>#version</code> directive will cause a duplication error</li></ul></li><li><p><strong>Material Properties</strong>:</p><ul><li>Material property handling has been updated</li><li>Use <code>.set()</code> method for colors instead of direct assignment with <code>new THREE.Color()</code></li><li>Direct assignment with <code>=</code> may not trigger internal updates properly anymore</li><li>Some material properties may require different configuration for the same visual result</li></ul></li></ol><h3>Texture Handling</h3><p>If your application uses textures (e.g., from loaded models or images), they now require explicit color space declaration:</p><pre class="prettyprint source lang-javascript"><code>// Old approach (pre-0.6.0) texture.encoding = THREE.sRGBEncoding; // New approach (0.6.0+) texture.colorSpace = THREE.SRGBColorSpace; </code></pre><h3>Breaking Changes</h3><p>If you're extending <code>crystvis-js</code> or using it in a custom way, be aware of these breaking changes:</p><ol><li><p><strong>Color Setting</strong>:</p><pre class="prettyprint source lang-javascript"><code>// Old approach (pre-0.6.0) material.color = new THREE.Color(hexValue); // New approach (0.6.0+) material.color.set(hexValue); </code></pre></li><li><p><strong>Shader Usage</strong>:</p><pre class="prettyprint source lang-javascript"><code>// Old approach (pre-0.6.0) new THREE.RawShaderMaterial({ vertexShader: shader, fragmentShader: shader }); // New approach (0.6.0+) new THREE.RawShaderMaterial({ vertexShader: shader, fragmentShader: shader, glslVersion: THREE.GLSL3 // For GLSL 3.0 shaders }); </code></pre></li><li><p><strong>Renderer Configuration</strong>:</p><ul><li>The default rendering equations have changed slightly</li><li>Materials may appear different (usually more physically accurate but sometimes duller)</li><li>Lighting and material properties may need adjustment for the same visual appearance</li><li>Explicitly use <code>renderer.outputColorSpace = THREE.SRGBColorSpace</code> as the new API (post-r139)</li><li>Physically correct lighting model updates may affect appearance</li><li>The default values of <code>material.toneMapped</code> or lighting intensities might need tuning</li></ul></li></ol><h3>Recommendations</h3><p>If you're using <code>crystvis-js</code> as a dependency:</p><ul><li>Update your code to use <code>.set()</code> for color changes</li><li>If you're extending the library with custom shaders, ensure you set <code>glslVersion</code> correctly</li><li>Test your visualizations thoroughly after upgrading</li></ul><p>If you're maintaining a fork:</p><ul><li>Review all color operations in your codebase</li><li>Check all shader implementations for version directive issues</li><li>Consider adjusting material parameters to maintain consistent appearance</li></ul><h2>Future Compatibility</h2><p>We will continue to update Three.js dependencies in future releases. To minimize migration issues:</p><ol><li>Avoid direct Three.js class extensions where possible</li><li>Use the provided APIs rather than accessing Three.js objects directly</li><li>When using Three.js directly, follow their recommended practices for forward compatibility</li></ol><p>For questions or issues related to this migration, please open an issue on the <a href="https://github.com/ccp-nc/crystvis-js/issues">GitHub repository</a>.</p></article></section></div></div></div><div class="search-container" id="PkfLWpAbet" style="display:none"><div class="wrapper" id="iCxFxjkHbP"><button class="icon-button search-close-button" id="VjLlGakifb" aria-label="close search"><svg><use xlink:href="#close-icon"></use></svg></button><div class="search-box-c"><svg><use xlink:href="#search-icon"></use></svg> <input type="text" id="vpcKVYIppa" class="search-input" placeholder="Search..." autofocus></div><div class="search-result-c" id="fWwVHRuDuN"><span class="search-result-c-text">Type anything to view search result</span></div></div></div><div class="mobile-menu-icon-container"><button class="icon-button" id="mobile-menu" data-isopen="false" aria-label="menu"><svg><use xlink:href="#menu-icon"></use></svg></button></div><div id="mobile-sidebar" class="mobile-sidebar-container"><div class="mobile-sidebar-wrapper"><div class="mobile-nav-links"></div><div class="mobile-sidebar-items-c"><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-modules"><div>Modules</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="lib_model.module_js.html">lib/model.js</a></div><div class="sidebar-section-children"><a href="lib_modelview.module_js.html">lib/modelview.js</a></div><div class="sidebar-section-children"><a href="lib_visualizer.module_js.html">lib/visualizer.js</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-classes"><div>Classes</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="lib_model.module_js-AtomImage.html">AtomImage</a></div><div class="sidebar-section-children"><a href="lib_model.module_js-BondImage.html">BondImage</a></div><div class="sidebar-section-children"><a href="lib_model.module_js-Model.html">Model</a></div><div class="sidebar-section-children"><a href="lib_modelview.module_js-ModelView.html">ModelView</a></div><div class="sidebar-section-children"><a href="lib_visualizer.module_js-CrystVis.html">CrystVis</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-tutorials"><div>Tutorials</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="tutorial-Events.html">Events</a></div><div class="sidebar-section-children"><a href="tutorial-Queries.html">Queries</a></div><div class="sidebar-section-children"><a href="tutorial-ThreejsMigration.html">ThreejsMigration</a></div></div></div><div class="mobile-navbar-actions"><div class="navbar-right-item"><button class="icon-button search-button" aria-label="open-search"><svg><use xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" xlink:href="#light-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div></div></div><script type="text/javascript" src="scripts/core.min.js"></script><script src="scripts/search.min.js" defer="defer"></script><script src="scripts/third-party/fuse.js" defer="defer"></script><script type="text/javascript">var tocbotInstance=tocbot.init({tocSelector:"#eed4d2a0bfd64539bb9df78095dec881",contentSelector:".main-content",headingSelector:"h1, h2, h3",hasInnerContainers:!0,scrollContainer:".main-content",headingsOffset:130,onClick:bringLinkToView})</script></body></html>