ThreeJs 认识材质

1、前言

材质和纹理有那么一点微妙的关系，纹理决定了物体的表面，而材质则决定了物体的“气质”，好比说，反射度，光滑度，金属感，塑料感或者玻璃的模仿等。固然，在 ThreeJs 中，纹理想要被展现出来是要被依附在材质中的。

2、概述

ThreeJs 中定义了很是丰富的材质，其类图以下。

从类图上看，定义了很是多的材质。

3、认识材质

1.Material

2.LineBasicMaterial

3.LineDashedMaterial

var material = new THREE.LineDashedMaterial( {
	color: 0xffffff,
	linewidth: 1,
	scale: 1,
	dashSize: 3,
	gapSize: 1,
} );
复制代码

4.MeshBasicMaterial

5.MeshDepthMaterial

6.MeshLambertMaterial

7.MeshNormalMaterial

8.MeshPhongMaterial

9.MeshPhysicalMaterial

10.MeshStandardMaterial

11.MeshToonMaterial

12.PointsMaterial

13.RawShaderMaterial

var material = new THREE.RawShaderMaterial( {

    uniforms: {
        time: { value: 1.0 }
    },
    vertexShader: document.getElementById( 'vertexShader' ).textContent,
    fragmentShader: document.getElementById( 'fragmentShader' ).textContent,

} );
复制代码

14.ShaderMaterial

var material = new THREE.ShaderMaterial( {

	uniforms: {

		time: { value: 1.0 },
		resolution: { value: new THREE.Vector2() }

	},

	vertexShader: document.getElementById( 'vertexShader' ).textContent,

	fragmentShader: document.getElementById( 'fragmentShader' ).textContent

} );
复制代码

15.ShadowMaterial

var planeGeometry = new THREE.PlaneGeometry( 2000, 2000 );
planeGeometry.rotateX( - Math.PI / 2 );

var planeMaterial = new THREE.ShadowMaterial();
planeMaterial.opacity = 0.2;

var plane = new THREE.Mesh( planeGeometry, planeMaterial );
plane.position.y = -200;
plane.receiveShadow = true;
scene.add( plane );
复制代码

16.SpriteMaterial

var spriteMap = new THREE.TextureLoader().load( 'textures/sprite.png' );

var spriteMaterial = new THREE.SpriteMaterial( { map: spriteMap, color: 0xffffff } );

var sprite = new THREE.Sprite( spriteMaterial );
sprite.scale.set(200, 200, 1)

scene.add( sprite );
复制代码

4、总结

ThreeJs 的内置材质很是的多，项目里能够根据须要来实际使用。若是内置的不能知足则使用 ShaderMaterial 来实现自定义的 Material。