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230 lines
8.9 KiB
230 lines
8.9 KiB
2 years ago
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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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<base href="../../../" />
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<script src="page.js"></script>
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<link type="text/css" rel="stylesheet" href="page.css" />
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</head>
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<body>
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[page:Material] →
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<h1>[name]</h1>
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<p class="desc">
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A material for non-shiny surfaces, without specular highlights.<br /><br />
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The material uses a non-physically based [link:https://en.wikipedia.org/wiki/Lambertian_reflectance Lambertian]
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model for calculating reflectance. This can simulate some surfaces (such as untreated wood or stone) well,
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but cannot simulate shiny surfaces with specular highlights (such as varnished wood). [name] uses per-fragment shading.<br /><br />
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Due to the simplicity of the reflectance and illumination models, performance will be greater
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when using this material over the [page:MeshPhongMaterial], [page:MeshStandardMaterial] or [page:MeshPhysicalMaterial],
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at the cost of some graphical accuracy.
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</p>
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<iframe id="scene" src="scenes/material-browser.html#MeshLambertMaterial"></iframe>
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<script>
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// iOS iframe auto-resize workaround
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if ( /(iPad|iPhone|iPod)/g.test( navigator.userAgent ) ) {
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const scene = document.getElementById( 'scene' );
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scene.style.width = getComputedStyle( scene ).width;
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scene.style.height = getComputedStyle( scene ).height;
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scene.setAttribute( 'scrolling', 'no' );
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}
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</script>
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<h2>Constructor</h2>
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<h3>[name]( [param:Object parameters] )</h3>
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<p>
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[page:Object parameters] - (optional) an object with one or more properties defining the material's appearance.
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Any property of the material (including any property inherited from [page:Material]) can be passed in here.<br /><br />
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The exception is the property [page:Hexadecimal color], which can be passed in as a hexadecimal
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string and is `0xffffff` (white) by default. [page:Color.set]( color ) is called internally.
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</p>
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<h2>Properties</h2>
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<p>See the base [page:Material] class for common properties.</p>
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<h3>[property:Texture alphaMap]</h3>
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<p>The alpha map is a grayscale texture that controls the opacity across the surface
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(black: fully transparent; white: fully opaque). Default is null.<br /><br />
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Only the color of the texture is used, ignoring the alpha channel if one exists.
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For RGB and RGBA textures, the [page:WebGLRenderer WebGL] renderer will use the
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green channel when sampling this texture due to the extra bit of precision provided
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for green in DXT-compressed and uncompressed RGB 565 formats. Luminance-only and
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luminance/alpha textures will also still work as expected.
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</p>
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<h3>[property:Texture aoMap]</h3>
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<p>The red channel of this texture is used as the ambient occlusion map. Default is null.
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The aoMap requires a second set of UVs.</p>
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<h3>[property:Float aoMapIntensity]</h3>
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<p>Intensity of the ambient occlusion effect. Default is 1. Zero is no occlusion effect.</p>
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<h3>[property:Texture bumpMap]</h3>
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<p>
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The texture to create a bump map. The black and white values map to the perceived depth in relation to the lights.
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Bump doesn't actually affect the geometry of the object, only the lighting. If a normal map is defined this will
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be ignored.
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</p>
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<h3>[property:Float bumpScale]</h3>
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<p>How much the bump map affects the material. Typical ranges are 0-1. Default is 1.</p>
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<h3>[property:Color color]</h3>
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<p>[page:Color] of the material, by default set to white (0xffffff).</p>
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<h3>[property:Integer combine]</h3>
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<p>
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How to combine the result of the surface's color with the environment map, if any.<br /><br />
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Options are [page:Materials THREE.MultiplyOperation] (default), [page:Materials THREE.MixOperation],
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[page:Materials THREE.AddOperation]. If mix is chosen, the [page:.reflectivity] is used to
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blend between the two colors.
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</p>
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<h3>[property:Texture displacementMap]</h3>
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<p>
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The displacement map affects the position of the mesh's vertices. Unlike other maps
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which only affect the light and shade of the material the displaced vertices can cast shadows,
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block other objects, and otherwise act as real geometry. The displacement texture is
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an image where the value of each pixel (white being the highest) is mapped against,
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and repositions, the vertices of the mesh.
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</p>
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<h3>[property:Float displacementScale]</h3>
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<p>
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How much the displacement map affects the mesh (where black is no displacement,
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and white is maximum displacement). Without a displacement map set, this value is not applied.
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Default is 1.
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</p>
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<h3>[property:Float displacementBias]</h3>
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<p>
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The offset of the displacement map's values on the mesh's vertices.
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Without a displacement map set, this value is not applied. Default is 0.
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</p>
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<h3>[property:Color emissive]</h3>
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<p>
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Emissive (light) color of the material, essentially a solid color unaffected by other lighting.
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Default is black.
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</p>
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<h3>[property:Texture emissiveMap]</h3>
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<p>
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Set emissive (glow) map. Default is null. The emissive map color is modulated by
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the emissive color and the emissive intensity. If you have an emissive map, be sure to
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set the emissive color to something other than black.
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</p>
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<h3>[property:Float emissiveIntensity]</h3>
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<p>Intensity of the emissive light. Modulates the emissive color. Default is 1.</p>
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<h3>[property:Texture envMap]</h3>
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<p>The environment map. Default is null.</p>
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<h3>[property:Boolean flatShading]</h3>
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<p>
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Define whether the material is rendered with flat shading. Default is false.
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</p>
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<h3>[property:Boolean fog]</h3>
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<p>Whether the material is affected by fog. Default is `true`.</p>
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<h3>[property:Texture lightMap]</h3>
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<p>The light map. Default is null. The lightMap requires a second set of UVs.</p>
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<h3>[property:Float lightMapIntensity]</h3>
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<p>Intensity of the baked light. Default is 1.</p>
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<h3>[property:Texture map]</h3>
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<p>
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The color map. May optionally include an alpha channel, typically combined with
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[page:Material.transparent .transparent] or [page:Material.alphaTest .alphaTest]. Default is null.
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</p>
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<h3>[property:Texture normalMap]</h3>
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<p>
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The texture to create a normal map. The RGB values affect the surface normal for each pixel fragment and change
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the way the color is lit. Normal maps do not change the actual shape of the surface, only the lighting.
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In case the material has a normal map authored using the left handed convention, the y component of normalScale
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should be negated to compensate for the different handedness.
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</p>
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<h3>[property:Integer normalMapType]</h3>
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<p>
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The type of normal map.<br /><br />
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Options are [page:constant THREE.TangentSpaceNormalMap] (default), and [page:constant THREE.ObjectSpaceNormalMap].
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</p>
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<h3>[property:Vector2 normalScale]</h3>
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<p>
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How much the normal map affects the material. Typical ranges are 0-1.
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Default is a [page:Vector2] set to (1,1).
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</p>
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<h3>[property:Float reflectivity]</h3>
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<p>How much the environment map affects the surface; also see [page:.combine].</p>
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<h3>[property:Float refractionRatio]</h3>
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<p>
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The index of refraction (IOR) of air (approximately 1) divided by the index of refraction of the material.
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It is used with environment mapping modes [page:Textures THREE.CubeRefractionMapping] and [page:Textures THREE.EquirectangularRefractionMapping].
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The refraction ratio should not exceed 1. Default is `0.98`.
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</p>
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<h3>[property:Texture specularMap]</h3>
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<p>Specular map used by the material. Default is null.</p>
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<h3>[property:Boolean wireframe]</h3>
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<p>Render geometry as wireframe. Default is `false` (i.e. render as flat polygons).</p>
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<h3>[property:String wireframeLinecap]</h3>
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<p>
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Define appearance of line ends. Possible values are "butt", "round" and "square". Default is 'round'.<br /><br />
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This corresponds to the [link:https://developer.mozilla.org/en/docs/Web/API/CanvasRenderingContext2D/lineCap 2D Canvas lineCap]
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property and it is ignored by the [page:WebGLRenderer WebGL] renderer.
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</p>
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<h3>[property:String wireframeLinejoin]</h3>
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<p>
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Define appearance of line joints. Possible values are "round", "bevel" and "miter". Default is 'round'.<br /><br />
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This corresponds to the [link:https://developer.mozilla.org/en/docs/Web/API/CanvasRenderingContext2D/lineJoin 2D Canvas lineJoin]
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property and it is ignored by the [page:WebGLRenderer WebGL] renderer.
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</p>
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<h3>[property:Float wireframeLinewidth]</h3>
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<p>Controls wireframe thickness. Default is 1.<br /><br />
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Due to limitations of the [link:https://www.khronos.org/registry/OpenGL/specs/gl/glspec46.core.pdf OpenGL Core Profile]
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with the [page:WebGLRenderer WebGL] renderer on most platforms linewidth will
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always be 1 regardless of the set value.
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</p>
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<h2>Methods</h2>
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<p>See the base [page:Material] class for common methods.</p>
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<h2>Source</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
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</p>
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</body>
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</html>
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