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@@ -17,12 +17,21 @@
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</p>
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</p>
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<ul>
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<ul>
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+ <li>
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+ <b>Anisotropy:</b> Ability to represent the anisotropic property of materials
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+ as observable with brushed metals.
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+ </li>
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<li>
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<li>
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<b>Clearcoat:</b> Some materials — like car paints, carbon fiber, and
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<b>Clearcoat:</b> Some materials — like car paints, carbon fiber, and
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wet surfaces — require a clear, reflective layer on top of another layer
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wet surfaces — require a clear, reflective layer on top of another layer
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that may be irregular or rough. Clearcoat approximates this effect,
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that may be irregular or rough. Clearcoat approximates this effect,
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without the need for a separate transparent surface.
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without the need for a separate transparent surface.
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</li>
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</li>
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+ <li>
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+ <b>Iridescence:</b> Allows to render the effect where hue varies
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+ depending on the viewing angle and illumination angle. This can be seen on
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+ soap bubbles, oil films, or on the wings of many insects.
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+ </li>
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<li>
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<li>
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<b>Physically-based transparency:</b> One limitation of
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<b>Physically-based transparency:</b> One limitation of
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[page:Material.opacity .opacity] is that highly transparent materials
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[page:Material.opacity .opacity] is that highly transparent materials
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@@ -69,7 +78,9 @@
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<h2>Examples</h2>
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<h2>Examples</h2>
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<p>
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<p>
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+ [example:webgl_loader_gltf_anisotropy loader / gltf / anisotropy]<br />
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[example:webgl_materials_physical_clearcoat materials / physical / clearcoat]<br />
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[example:webgl_materials_physical_clearcoat materials / physical / clearcoat]<br />
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+ [example:webgl_loader_gltf_iridescence loader / gltf / iridescence]<br />
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[example:webgl_loader_gltf_sheen loader / gltf / sheen]<br />
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[example:webgl_loader_gltf_sheen loader / gltf / sheen]<br />
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[example:webgl_materials_physical_transmission materials / physical / transmission]
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[example:webgl_materials_physical_transmission materials / physical / transmission]
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</p>
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</p>
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@@ -94,6 +105,25 @@
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common properties.
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common properties.
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</p>
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</p>
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+ <h3>[property:Float anisotropy]</h3>
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+ <p>
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+ The anisotropy strength. Default is `0.0`.
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+ </p>
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+
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+ <h3>[property:Texture anisotropyMap]</h3>
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+ <p>
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+ Red and green channels represent the anisotropy direction in `[-1, 1]` tangent,
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+ bitangent space, to be rotated by [page:.anisotropyRotation]. The blue channel
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+ contains strength as `[0, 1]` to be multiplied by [page:.anisotropy]. Default is `null`.
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+ </p>
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+
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+ <h3>[property:Float anisotropyRotation]</h3>
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+ <p>
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+ The rotation of the anisotropy in tangent, bitangent space, measured in radians
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+ counter-clockwise from the tangent. When [page:.anisotropyMap] is present, this
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+ property provides additional rotation to the vectors in the texture. Default is `0.0`.
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+ </p>
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+
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<h3>[property:Color attenuationColor]</h3>
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<h3>[property:Color attenuationColor]</h3>
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<p>
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<p>
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The color that white light turns into due to absorption when reaching the
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The color that white light turns into due to absorption when reaching the
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Michael Herzog