standard material

by grano

HTML

<script src="https://threejs.org/build/three.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.js"></script>

CSS

body {
	  margin: 0;
}

JavaScript

let camera, scene, renderer, clock, spotLight;

init();
animate();

function init() {

    camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
    camera.position.set( 0, 1, 1 );

    scene = new THREE.Scene();
		camera.lookAt( scene.position );
		
		clock = new THREE.Clock();
		
		//
		
    const geometry = new THREE.PlaneBufferGeometry();
    const material = new THREE.MeshStandardMaterial({transparent: true});
	  material.userData.darkness = { value: 0.5 };

  material.onBeforeCompile = function ( shader ) {
    const keyword0 = 'void main() {';        
    const keyword1 = '#include <dithering_fragment>';
    
    shader.uniforms.darkness = material.userData.darkness;
    shader.fragmentShader = shader.fragmentShader
    .replace(
      keyword0, `uniform float darkness; ${keyword0}`)
    .replace(
    	keyword1,
      `${keyword1}
				gl_FragColor = vec4( vec3( 1.0 ),  1.0 * darkness );
			`
    )

		const keyword2 = '#include <begin_vertex>';
    shader.vertexShader = shader.vertexShader.replace(keyword2, transformChunk)
  };
  
  const transformChunk = `
  	vec3 transformed = vec3( position.x, position.y - 0.2, position.z );
	`



    const mesh = new THREE.Mesh( geometry, material );
    scene.add( mesh );
		
		//
		
		const ambientLight = new THREE.AmbientLight( 0xcccccc, 0.8 );
		scene.add( ambientLight );
		
		spotLight = new THREE.SpotLight( 0xcccccc, 0.6 );
		spotLight.position.set( 0, 1, 0 );
		scene.add( spotLight );
		scene.add( spotLight.target ); // add target to the scene
		
		//

    renderer = new THREE.WebGLRenderer( { antialias: true } );
		renderer.setPixelRatio( window.devicePixelRatio );
    renderer.setSize( window.innerWidth, window.innerHeight );
    document.body.appendChild( renderer.domElement );
		
		const controls = new THREE.OrbitControls( camera, renderer.domElement );

}

function animate() {

    requestAnimationFrame( animate );
		
    renderer.render( scene, camera );

}