javascript - Fondo transparente con three.js

alpha

Question

El código funciona, pero tengo problemas para configurar el fondo transparente en el lienzo con three.js. Yo suelo:

Background.renderer.setClearColor(0xffffff, 0);

Pero luego el fondo se pone negro. ¿Cómo lo cambio para ser transparente?

El código:

 var camera, scene, renderer;
var mouseX = 0, mouseY = 0;
var p;
var windowHalfX = site.Width / 2;
var windowHalfY = site.Height / 2;
Background.camera = new THREE.PerspectiveCamera( 35, site.Width / site.Height, 1, 2000 );
Background.camera.position.z = 300;
//camera.position.y = 200;
// scene
Background.scene = new THREE.Scene();
// texture
var manager = new THREE.LoadingManager();
manager.onProgress = function ( item, loaded, total ) {
console.log(''webgl, twice??'');
//console.log( item, loaded, total );
};
// particles
var p_geom = new THREE.Geometry();
var p_material = new THREE.ParticleBasicMaterial({
color: 0xFFFFFF,
size: 1
});
// model
var loader = new THREE.OBJLoader( manager );
loader.load( site.base_url + ''/assets/models/head.obj'', function ( object ) {
object.traverse( function ( child ) {
if ( child instanceof THREE.Mesh ) {
// child.material.map = texture;
var scale = 6;
$(child.geometry.vertices).each(function() {
p_geom.vertices.push(new THREE.Vector3(this.x * scale, this.y * scale, this.z * scale));
})
}
});
Background.scene.add(p)
});
p = new THREE.ParticleSystem(
p_geom,
p_material
);
Background.renderer = new THREE.WebGLRenderer();
Background.renderer.setSize( site.Width, site.Height );
Background.renderer.setClearColor(0xffffff, 0);
$(''.particlehead'').append(Background.renderer.domElement);
$(''#content'').on(''mousemove'', onDocumentMouseMove);
site.window.on(''resize'', onWindowResize);
function onWindowResize() {
windowHalfX = site.Width / 2;
windowHalfY = site.Height / 2;
//console.log(windowHalfX);
Background.camera.aspect = site.Width / site.Height;
Background.camera.updateProjectionMatrix();
Background.renderer.setSize( site.Width, site.Height );
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX ) / 2;
mouseY = ( event.clientY - windowHalfY ) / 2;
//console.log(mouseX)
}
Background.animate = function() {
//console.log(''animate2'');
Background.ticker = TweenMax.ticker;
Background.ticker.addEventListener("tick", Background.animate);
render();
}
function render() {
Background.camera.position.x += ( (mouseX * .5) - Background.camera.position.x ) * .05;
Background.camera.position.y += ( -(mouseY * .5) - Background.camera.position.y ) * .05;
Background.camera.lookAt( Background.scene.position );
Background.renderer.render( Background.scene, Background.camera );
}
render();

Answer 1

Si desea un fondo transparente en three.js, debe pasar el parámetro alpha al constructor WebGLRenderer .

var renderer = new THREE.WebGLRenderer( { alpha: true } );

Puede dejar el color claro en el valor predeterminado.

renderer.setClearColor( 0x000000, 0 ); // the default

three.js r.71