shader material

by grano

HTML

<script src="https://threejs.org/examples/jsm/loaders/PLYLoader.js"></script>
<script src="https://cdn.rawgit.com/mrdoob/three.js/master/examples/models/ply/ascii/dolphins.ply"></script>
<script src="https://threejs.org/build/three.js"></script>

<script id="vs" type="x-shader/x-vertex">
uniform mat4 modelViewMatrix;
uniform mat4 projectionMatrix;

attribute vec3 position;

void main() {
    vec4 mvPosition = modelViewMatrix * vec4(position, 1.0);
    gl_Position = projectionMatrix * mvPosition;
    float perspective = 2.0 / length( mvPosition.xyz );
    gl_PointSize = 0.0 + pow(position.x, 3.0);
   
}
</script>

<script id="fs" type="x-shader/x-fragment">
void main() {
    gl_FragColor = vec4(1, 0, 0, 0.3);
}
</script>

CSS

body {
	  margin: 0;
}

JavaScript

var camera, scene, renderer, lines;

init();
animate();

function init() {

    camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
    camera.position.z = 6;
    camera.position.y = 2;


    scene = new THREE.Scene();
    scene.background = new THREE.Color( 0xffffff );

    var geometry = new THREE.BoxBufferGeometry( 10, 1, 10, 60, 60, 60 );
//		var wireframeGeometry = new THREE.WireframeGeometry( geometry );
		
		var material = new THREE.RawShaderMaterial( {
//        transparent: true,
				vertexShader: document.getElementById( 'vs' ).textContent,
				fragmentShader: document.getElementById( 'fs' ).textContent
        
		} );
    

    lines = new THREE.Points( geometry, material );
    scene.add( lines );
//    camera.lookAt(lines)

    renderer = new THREE.WebGLRenderer( { antialias: true } );
    renderer.setSize( window.innerWidth, window.innerHeight );
    document.body.appendChild( renderer.domElement );

}

function animate() {

    requestAnimationFrame( animate );

//   lines.rotation.x += 0.01;
  // lines.rotation.y += 0.02;

    renderer.render( scene, camera );

}