CSS2DRenderer.js
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/**
* @author mrdoob / http://mrdoob.com/
*/
THREE.CSS2DObject = function ( element ) {
THREE.Object3D.call( this );
this.element = element;
this.element.style.position = 'absolute';
this.addEventListener( 'removed', function ( event ) {
if ( this.element.parentNode !== null ) {
this.element.parentNode.removeChild( this.element );
}
} );
};
THREE.CSS2DObject.prototype = Object.create( THREE.Object3D.prototype );
THREE.CSS2DObject.prototype.constructor = THREE.CSS2DObject;
//
THREE.CSS2DRenderer = function () {
console.log( 'THREE.CSS2DRenderer', THREE.REVISION );
var _width, _height;
var _widthHalf, _heightHalf;
var vector = new THREE.Vector3();
var viewMatrix = new THREE.Matrix4();
var viewProjectionMatrix = new THREE.Matrix4();
var domElement = document.createElement( 'div' );
domElement.style.overflow = 'hidden';
this.domElement = domElement;
this.setSize = function ( width, height ) {
_width = width;
_height = height;
_widthHalf = _width / 2;
_heightHalf = _height / 2;
domElement.style.width = width + 'px';
domElement.style.height = height + 'px';
};
var renderObject = function ( object, camera ) {
if ( object instanceof THREE.CSS2DObject ) {
vector.setFromMatrixPosition( object.matrixWorld );
vector.applyProjection( viewProjectionMatrix );
var element = object.element;
var style = 'translate(-50%,-50%) translate(' + ( vector.x * _widthHalf + _widthHalf ) + 'px,' + ( - vector.y * _heightHalf + _heightHalf ) + 'px)';
element.style.WebkitTransform = style;
element.style.MozTransform = style;
element.style.oTransform = style;
element.style.transform = style;
if ( element.parentNode !== domElement ) {
domElement.appendChild( element );
}
}
for ( var i = 0, l = object.children.length; i < l; i ++ ) {
renderObject( object.children[ i ], camera );
}
};
this.render = function ( scene, camera ) {
scene.updateMatrixWorld();
if ( camera.parent === null ) camera.updateMatrixWorld();
camera.matrixWorldInverse.getInverse( camera.matrixWorld );
viewMatrix.copy( camera.matrixWorldInverse.getInverse( camera.matrixWorld ) );
viewProjectionMatrix.multiplyMatrices( camera.projectionMatrix, viewMatrix );
renderObject( scene, camera );
};
};