Accueil / npm / three@0.186.1 / src / materials / MeshLambertMaterial.js
MeshLambertMaterial.js
import { MultiplyOperation, TangentSpaceNormalMap } from '../constants.js';
import { Material } from './Material.js';
import { Vector2 } from '../math/Vector2.js';
import { Color } from '../math/Color.js';
import { Euler } from '../math/Euler.js';
/**
* A material for non-shiny surfaces, without specular highlights.
*
* The material uses a non-physically based [Lambertian](https://en.wikipedia.org/wiki/Lambertian_reflectance)
* model for calculating reflectance. This can simulate some surfaces (such
* as untreated wood or stone) well, but cannot simulate shiny surfaces with
* specular highlights (such as varnished wood). `MeshLambertMaterial` uses per-fragment
* shading.
*
* Due to the simplicity of the reflectance and illumination models,
* performance will be greater when using this material over the
* {@link MeshPhongMaterial}, {@link MeshStandardMaterial} or
* {@link MeshPhysicalMaterial}, at the cost of some graphical accuracy.
*
* @augments Material
* @demo scenes/material-browser.html#MeshLambertMaterial
*/
class MeshLambertMaterial extends Material {
/**
* Constructs a new mesh lambert material.
*
* @param {Object} [parameters] - An object with one or more properties
* defining the material's appearance. Any property of the material
* (including any property from inherited materials) can be passed
* in here. Color values can be passed any type of value accepted
* by {@link Color#set}.
*/
constructor( parameters ) {
super();
/**
* This flag can be used for type testing.
*
* @type {boolean}
* @readonly
* @default true
*/
this.isMeshLambertMaterial = true;
this.type = 'MeshLambertMaterial';
/**
* Color of the material.
*
* @type {Color}
* @default (1,1,1)
*/
this.color = new Color( 0xffffff ); // diffuse
/**
* The color map. May optionally include an alpha channel, typically combined
* with {@link Material#transparent} or {@link Material#alphaTest}. The texture map
* color is modulated by the diffuse `color`.
*
* `map` represents color data, and the texture must be assigned a
* {@link Texture#colorSpace}. Most `map` textures set
* `texture.colorSpace = SRGBColorSpace`.
*
* @type {?Texture}
* @default null
*/
this.map = null;
/**
* The light map. Requires a second set of UVs.
*
* `lightMap` represents pre-baked illuminance data, and the texture must be assigned
* a {@link Texture#colorSpace}. Most `lightMap` textures set
* `texture.colorSpace = LinearSRGBColorSpace` and use float-type formats
* such as `.exr` or `.hdr`.
*
* @type {?Texture}
* @default null
*/
this.lightMap = null;
/**
* Intensity of the baked light.
*
* @type {number}
* @default 1
*/
this.lightMapIntensity = 1.0;
/**
* The red channel of this texture is used as the ambient occlusion map.
* Requires a second set of UVs.
*
* `aoMap` represents non-color data. Any texture assigned must have
* `texture.colorSpace = NoColorSpace` (default).
*
* @type {?Texture}
* @default null
*/
this.aoMap = null;
/**
* Intensity of the ambient occlusion effect. Range is `[0,1]`, where `0`
* disables ambient occlusion. Where intensity is `1` and the AO map's
* red channel is also `1`, ambient light is fully occluded on a surface.
*
* @type {number}
* @default 1
*/
this.aoMapIntensity = 1.0;
/**
* Emissive (light) color of the material, essentially a solid color
* unaffected by other lighting.
*
* @type {Color}
* @default (0,0,0)
*/
this.emissive = new Color( 0x000000 );
/**
* Intensity of the emissive light. Modulates the emissive color.
*
* @type {number}
* @default 1
*/
this.emissiveIntensity = 1.0;
/**
* Set emissive (glow) map. The emissive map color is modulated by the
* emissive color and the emissive intensity. If you have an emissive map,
* be sure to set the emissive color to something other than black.
*
* `emissiveMap` represents color data, and the texture must be assigned a
* {@link Texture#colorSpace}. Most `emissiveMap` textures set
* `texture.colorSpace = SRGBColorSpace`.
*
* @type {?Texture}
* @default null
*/
this.emissiveMap = null;
/**
* The texture to create a bump map. The black and white values map to the
* perceived depth in relation to the lights. Bump doesn't actually affect
* the geometry of the object, only the lighting. If a normal map is defined
* this will be ignored.
*
* `bumpMap` represents non-color data. Any texture assigned must have
* `texture.colorSpace = NoColorSpace` (default).
*
* @type {?Texture}
* @default null
*/
this.bumpMap = null;
/**
* How much the bump map affects the material. Typical range is `[0,1]`.
*
* @type {number}
* @default 1
*/
this.bumpScale = 1;
/**
* The texture to create a normal map. The RGB values affect the surface
* normal for each pixel fragment and change the way the color is lit. Normal
* maps do not change the actual shape of the surface, only the lighting. In
* case the material has a normal map authored using the left handed
* convention, the `y` component of `normalScale` should be negated to compensate
* for the different handedness.
*
* `normalMap` represents non-color data. Any texture assigned must have
* `texture.colorSpace = NoColorSpace` (default).
*
* @type {?Texture}
* @default null
*/
this.normalMap = null;
/**
* The type of normal map.
*
* @type {(TangentSpaceNormalMap|ObjectSpaceNormalMap)}
* @default TangentSpaceNormalMap
*/
this.normalMapType = TangentSpaceNormalMap;
/**
* How much the normal map affects the material. Typical value range is `[0,1]`.
*
* @type {Vector2}
* @default (1,1)
*/
this.normalScale = new Vector2( 1, 1 );
/**
* The displacement map affects the position of the mesh's vertices. Unlike
* other maps which only affect the light and shade of the material the
* displaced vertices can cast shadows, block other objects, and otherwise
* act as real geometry. The displacement texture is an image where the value
* of each pixel (white being the highest) is mapped against, and
* repositions, the vertices of the mesh. For best results, pair a
* displacement map with a matching normal map, since the renderer can
* not recompute surface normals from the displaced vertices.
*
* `displacementMap` represents non-color data. Any texture assigned must have
* `texture.colorSpace = NoColorSpace` (default).
*
* @type {?Texture}
* @default null
*/
this.displacementMap = null;
/**
* How much the displacement map affects the mesh (where black is no
* displacement, and white is maximum displacement). Without a displacement
* map set, this value is not applied.
*
* @type {number}
* @default 0
*/
this.displacementScale = 1;
/**
* The offset of the displacement map's values on the mesh's vertices.
* The bias is added to the scaled sample of the displacement map.
* Without a displacement map set, this value is not applied.
*
* @type {number}
* @default 0
*/
this.displacementBias = 0;
/**
* Specular map used by the material.
*
* `specularMap` represents color data, and the texture must be assigned a
* {@link Texture#colorSpace}. Most `specularMap` textures set
* `texture.colorSpace = SRGBColorSpace`.
*
* @type {?Texture}
* @default null
*/
this.specularMap = null;
/**
* The alpha map is a grayscale texture that controls the opacity across the
* surface (black: fully transparent; white: fully opaque).
*
* Only the color of the texture is used, ignoring the alpha channel if one
* exists. For RGB and RGBA textures, the renderer will use the green channel
* when sampling this texture due to the extra bit of precision provided for
* green in DXT-compressed and uncompressed RGB 565 formats. Luminance-only and
* luminance/alpha textures will also still work as expected.
*
* `alphaMap` represents non-color data. Any texture assigned must have
* `texture.colorSpace = NoColorSpace` (default).
*
* @type {?Texture}
* @default null
*/
this.alphaMap = null;
/**
* The environment map.
*
* `envMap` represents luminance data, and the texture must be assigned
* a {@link Texture#colorSpace}. Most `envMap` textures set
* `texture.colorSpace = LinearSRGBColorSpace` and use float-type formats
* such as `.exr` or `.hdr`.
*
* @type {?Texture}
* @default null
*/
this.envMap = null;
/**
* The rotation of the environment map in radians.
*
* @type {Euler}
* @default (0,0,0)
*/
this.envMapRotation = new Euler();
/**
* How to combine the result of the surface's color with the environment map, if any.
*
* When set to `MixOperation`, the {@link MeshBasicMaterial#reflectivity} is used to
* blend between the two colors.
*
* @type {(MultiplyOperation|MixOperation|AddOperation)}
* @default MultiplyOperation
*/
this.combine = MultiplyOperation;
/**
* How much the environment map affects the surface.
* The valid range is between `0` (no reflections) and `1` (full reflections).
*
* @type {number}
* @default 1
*/
this.reflectivity = 1;
/**
* Scales the effect of the environment map by multiplying its color.
*
* @type {number}
* @default 1
*/
this.envMapIntensity = 1.0;
/**
* The index of refraction (IOR) of air (approximately 1) divided by the
* index of refraction of the material. It is used with environment mapping
* modes {@link CubeRefractionMapping} and {@link EquirectangularRefractionMapping}.
* The refraction ratio should not exceed `1`.
*
* @type {number}
* @default 0.98
*/
this.refractionRatio = 0.98;
/**
* Renders the geometry as a wireframe.
*
* @type {boolean}
* @default false
*/
this.wireframe = false;
/**
* Controls the thickness of the wireframe.
*
* Can only be used with {@link SVGRenderer}.
*
* @type {number}
* @default 1
*/
this.wireframeLinewidth = 1;
/**
* Defines appearance of wireframe ends.
*
* Can only be used with {@link SVGRenderer}.
*
* @type {('round'|'bevel'|'miter')}
* @default 'round'
*/
this.wireframeLinecap = 'round';
/**
* Defines appearance of wireframe joints.
*
* Can only be used with {@link SVGRenderer}.
*
* @type {('round'|'bevel'|'miter')}
* @default 'round'
*/
this.wireframeLinejoin = 'round';
/**
* Whether the material is rendered with flat shading or not.
*
* @type {boolean}
* @default false
*/
this.flatShading = false;
/**
* Whether the material is affected by fog or not.
*
* @type {boolean}
* @default true
*/
this.fog = true;
this.setValues( parameters );
}
copy( source ) {
super.copy( source );
this.color.copy( source.color );
this.map = source.map;
this.lightMap = source.lightMap;
this.lightMapIntensity = source.lightMapIntensity;
this.aoMap = source.aoMap;
this.aoMapIntensity = source.aoMapIntensity;
this.emissive.copy( source.emissive );
this.emissiveMap = source.emissiveMap;
this.emissiveIntensity = source.emissiveIntensity;
this.bumpMap = source.bumpMap;
this.bumpScale = source.bumpScale;
this.normalMap = source.normalMap;
this.normalMapType = source.normalMapType;
this.normalScale.copy( source.normalScale );
this.displacementMap = source.displacementMap;
this.displacementScale = source.displacementScale;
this.displacementBias = source.displacementBias;
this.specularMap = source.specularMap;
this.alphaMap = source.alphaMap;
this.envMap = source.envMap;
this.envMapRotation.copy( source.envMapRotation );
this.combine = source.combine;
this.reflectivity = source.reflectivity;
this.envMapIntensity = source.envMapIntensity;
this.refractionRatio = source.refractionRatio;
this.wireframe = source.wireframe;
this.wireframeLinewidth = source.wireframeLinewidth;
this.wireframeLinecap = source.wireframeLinecap;
this.wireframeLinejoin = source.wireframeLinejoin;
this.flatShading = source.flatShading;
this.fog = source.fog;
return this;
}
}
export { MeshLambertMaterial };