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/**
 * @author Garrett Johnson / http://gkjohnson.github.io/
 *
 *  Approach from http://john-chapman-graphics.blogspot.com/2013/01/per-object-motion-blur.html
 */
import {
	Frustum,
	Color,
	WebGLRenderTarget,
	LinearFilter,

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// original implementation is from https://github.com/pmndrs/drei

const {
  DepthFormat, DepthTexture, LinearFilter, Matrix4, MeshStandardMaterial,
  PerspectiveCamera, Plane, UnsignedShortType, Vector3, Vector4, WebGLRenderTarget
} = THREE

class MeshReflectorMaterial extends MeshStandardMaterial {
  constructor(renderer, camera, scene, object, {
    mixBlur = 0,

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import * as THREE from "three"

// credits for the box-projecting shader code go to codercat (https://codercat.tk)

const worldposReplace = /* glsl */`
#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )
    vec4 worldPosition = modelMatrix * vec4( transformed, 1.0 );

    #ifdef BOX_PROJECTED_ENV_MAP
        vWorldPosition = worldPosition.xyz;