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/**
* Created by tpowellmeto on 29/10/2015.
*
* peppers ghost effect based on http://www.instructables.com/id/Reflective-Prism/?ALLSTEPS
*/
import {
PerspectiveCamera,
Quaternion,
Vector3
} from "../../../build/three.module.js";
var PeppersGhostEffect = function ( renderer ) {
var scope = this;
scope.cameraDistance = 15;
scope.reflectFromAbove = false;
// Internals
var _halfWidth, _width, _height;
var _cameraF = new PerspectiveCamera(); //front
var _cameraB = new PerspectiveCamera(); //back
var _cameraL = new PerspectiveCamera(); //left
var _cameraR = new PerspectiveCamera(); //right
var _position = new Vector3();
var _quaternion = new Quaternion();
var _scale = new Vector3();
// Initialization
renderer.autoClear = false;
this.setSize = function ( width, height ) {
_halfWidth = width / 2;
if ( width < height ) {
_width = width / 3;
_height = width / 3;
} else {
_width = height / 3;
_height = height / 3;
}
renderer.setSize( width, height );
};
this.render = function ( scene, camera ) {
scene.updateMatrixWorld();
if ( camera.parent === null ) camera.updateMatrixWorld();
camera.matrixWorld.decompose( _position, _quaternion, _scale );
// front
_cameraF.position.copy( _position );
_cameraF.quaternion.copy( _quaternion );
_cameraF.translateZ( scope.cameraDistance );
_cameraF.lookAt( scene.position );
// back
_cameraB.position.copy( _position );
_cameraB.quaternion.copy( _quaternion );
_cameraB.translateZ( - ( scope.cameraDistance ) );
_cameraB.lookAt( scene.position );
_cameraB.rotation.z += 180 * ( Math.PI / 180 );
// left
_cameraL.position.copy( _position );
_cameraL.quaternion.copy( _quaternion );
_cameraL.translateX( - ( scope.cameraDistance ) );
_cameraL.lookAt( scene.position );
_cameraL.rotation.x += 90 * ( Math.PI / 180 );
// right
_cameraR.position.copy( _position );
_cameraR.quaternion.copy( _quaternion );
_cameraR.translateX( scope.cameraDistance );
_cameraR.lookAt( scene.position );
_cameraR.rotation.x += 90 * ( Math.PI / 180 );
renderer.clear();
renderer.setScissorTest( true );
renderer.setScissor( _halfWidth - ( _width / 2 ), ( _height * 2 ), _width, _height );
renderer.setViewport( _halfWidth - ( _width / 2 ), ( _height * 2 ), _width, _height );
if ( scope.reflectFromAbove ) {
renderer.render( scene, _cameraB );
} else {
renderer.render( scene, _cameraF );
}
renderer.setScissor( _halfWidth - ( _width / 2 ), 0, _width, _height );
renderer.setViewport( _halfWidth - ( _width / 2 ), 0, _width, _height );
if ( scope.reflectFromAbove ) {
renderer.render( scene, _cameraF );
} else {
renderer.render( scene, _cameraB );
}
renderer.setScissor( _halfWidth - ( _width / 2 ) - _width, _height, _width, _height );
renderer.setViewport( _halfWidth - ( _width / 2 ) - _width, _height, _width, _height );
if ( scope.reflectFromAbove ) {
renderer.render( scene, _cameraR );
} else {
renderer.render( scene, _cameraL );
}
renderer.setScissor( _halfWidth + ( _width / 2 ), _height, _width, _height );
renderer.setViewport( _halfWidth + ( _width / 2 ), _height, _width, _height );
if ( scope.reflectFromAbove ) {
renderer.render( scene, _cameraL );
} else {
renderer.render( scene, _cameraR );
}
renderer.setScissorTest( false );
};
};
export { PeppersGhostEffect };
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