react-three-fiber/web.js

React-fiber renderer for THREE.js

import _extends from '@babel/runtime/helpers/esm/extends';
import _objectWithoutPropertiesLoose from '@babel/runtime/helpers/esm/objectWithoutPropertiesLoose';
import * as THREE from 'three';
import { Layers, Color, Texture, sRGBEncoding, Vector2, Raycaster, Scene, OrthographicCamera, PerspectiveCamera, Clock, Vector3, PCFSoftShadowMap, ACESFilmicToneMapping, WebGLRenderer } from 'three';
import Reconciler from 'react-reconciler';
import { unstable_now, unstable_runWithPriority, unstable_IdlePriority } from 'scheduler';
import React__default, { createContext, useState, useRef, useMemo, useCallback, useLayoutEffect, useEffect, createElement, useContext as useContext$1 } from 'react';
import { TinyEmitter } from 'tiny-emitter';
import usePromise from 'react-promise-suspense';
import useMeasure from 'react-use-measure';
import { ResizeObserver } from '@juggle/resize-observer';
import mergeRefs from 'react-merge-refs';

var version = "4.2.11";

function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return typeof key === "symbol" ? key : String(key); }

function _toPrimitive(input, hint) { if (typeof input !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (typeof res !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
const roots = new Map();
const emptyObject = {};
const is = {
  obj: a => a === Object(a) && !is.arr(a),
  fun: a => typeof a === 'function',
  str: a => typeof a === 'string',
  num: a => typeof a === 'number',
  und: a => a === void 0,
  arr: a => Array.isArray(a),

  equ(a, b) {
    // Wrong type or one of the two undefined, doesn't match
    if (typeof a !== typeof b || !!a !== !!b) return false; // Atomic, just compare a against b

    if (is.str(a) || is.num(a) || is.obj(a)) return a === b; // Array, shallow compare first to see if it's a match

    if (is.arr(a) && a == b) return true; // Last resort, go through keys

    let i;

    for (i in a) if (!(i in b)) return false;

    for (i in b) if (a[i] !== b[i]) return false;

    return is.und(i) ? a === b : true;
  }

};

function createSubs(callback, subs) {
  const index = subs.length;
  subs.push(callback);
  return () => void subs.splice(index, 1);
}

let globalEffects = [];
let globalTailEffects = [];
const addEffect = callback => createSubs(callback, globalEffects);
const addTail = callback => createSubs(callback, globalTailEffects);
function renderGl(state, timestamp, repeat = 0, runGlobalEffects = false) {
  // Run global effects
  if (runGlobalEffects) globalEffects.forEach(effect => effect(timestamp) && repeat++); // Run local effects

  const delta = state.current.clock.getDelta();
  state.current.subscribers.forEach(sub => sub.ref.current(state.current, delta)); // Decrease frame count

  state.current.frames = Math.max(0, state.current.frames - 1);
  repeat += !state.current.invalidateFrameloop ? 1 : state.current.frames; // Render content

  if (!state.current.manual) state.current.gl.render(state.current.scene, state.current.camera);
  return repeat;
}
let running = false;

function renderLoop(timestamp) {
  running = true;
  let repeat = 0; // Run global effects

  globalEffects.forEach(effect => effect(timestamp) && repeat++);
  roots.forEach(root => {
    const state = root.containerInfo.__state; // If the frameloop is invalidated, do not run another frame

    if (state.current.active && state.current.ready && (!state.current.invalidateFrameloop || state.current.frames > 0)) repeat = renderGl(state, timestamp, repeat);
  });
  if (repeat !== 0) return requestAnimationFrame(renderLoop);else {
    // Tail call effects, they are called when rendering stops
    globalTailEffects.forEach(effect => effect(timestamp));
  } // Flag end of operation

  running = false;
}

function invalidate(state = true, frames = 2) {
  if (state === true) roots.forEach(root => root.containerInfo.__state.current.frames = frames);else if (state && state.current) {
    if (state.current.vr) return;
    state.current.frames = frames;
  }

  if (!running) {
    running = true;
    requestAnimationFrame(renderLoop);
  }
}
let catalogue = {};
const extend = objects => void (catalogue = _extends({}, catalogue, objects));
function applyProps(instance, newProps, oldProps = {}, accumulative = false) {
  // Filter equals, events and reserved props
  const container = instance.__container;
  const sameProps = Object.keys(newProps).filter(key => is.equ(newProps[key], oldProps[key]));
  const handlers = Object.keys(newProps).filter(key => {
    // Event-handlers ...
    //   are functions, that
    //   start with "on", and
    //   contain the name "Pointer", "Click", "ContextMenu", or "Wheel"
    if (is.fun(newProps[key]) && key.startsWith('on')) {
      return key.includes('Pointer') || key.includes('Click') || key.includes('ContextMenu') || key.includes('Wheel');
    }
  });
  const leftOvers = accumulative ? Object.keys(oldProps).filter(key => newProps[key] === void 0) : [];
  const filteredProps = [...sameProps, 'children', 'key', 'ref'].reduce((acc, prop) => {
    let rest = _objectWithoutPropertiesLoose(acc, [prop].map(_toPropertyKey));

    return rest;
  }, newProps); // Add left-overs as undefined props so they can be removed

  leftOvers.forEach(key => key !== 'children' && (filteredProps[key] = undefined));

  if (Object.keys(filteredProps).length > 0) {
    Object.entries(filteredProps).forEach(([key, value]) => {
      if (!handlers.includes(key)) {
        var _instance$__container;

        let root = instance;
        let target = root[key];

        if (key.includes('-')) {
          const entries = key.split('-');
          target = entries.reduce((acc, key) => acc[key], instance); // If the target is atomic, it forces us to switch the root

          if (!(target && target.set)) {
            const [name, ...reverseEntries] = entries.reverse();
            root = reverseEntries.reverse().reduce((acc, key) => acc[key], instance);
            key = name;
          }
        } // Special treatment for objects with support for set/copy


        const isColorManagement = (_instance$__container = instance.__container) == null ? void 0 : _instance$__container.__state.current.colorManagement;

        if (target && target.set && (target.copy || target instanceof Layers)) {
          // If value is an array it has got to be the set function
          if (Array.isArray(value)) target.set(...value); // Test again target.copy(class) next ...
          else if (target.copy && value && value.constructor && target.constructor.name === value.constructor.name) target.copy(value); // If nothing else fits, just set the single value, ignore undefined
            // https://github.com/react-spring/react-three-fiber/issues/274
            else if (value !== undefined) {
                target.set(value); // Auto-convert sRGB colors, for now ...
                // https://github.com/react-spring/react-three-fiber/issues/344

                if (isColorManagement && target instanceof Color) {
                  target.convertSRGBToLinear();
                }
              } // Else, just overwrite the value
        } else {
          root[key] = value; // Auto-convert sRGB textures, for now ...
          // https://github.com/react-spring/react-three-fiber/issues/344

          if (isColorManagement && root[key] instanceof Texture) {
            root[key].encoding = sRGBEncoding;
          }
        }

        invalidateInstance(instance);
      }
    }); // Preemptively delete the instance from the containers interaction

    if (accumulative && container && instance.raycast && instance.__handlers) {
      instance.__handlers = undefined;

      const index = container.__interaction.indexOf(instance);

      if (index > -1) container.__interaction.splice(index, 1);
    } // Prep interaction handlers


    if (handlers.length) {
      // Add interactive object to central container
      if (container && instance.raycast) container.__interaction.push(instance); // Add handlers to the instances handler-map

      instance.__handlers = handlers.reduce((acc, key) => _extends({}, acc, {
        [key.charAt(2).toLowerCase() + key.substr(3)]: newProps[key]
      }), {});
    } // Call the update lifecycle when it is being updated, but only when it is part of the scene


    if (instance.parent) updateInstance(instance);
  }
}

function invalidateInstance(instance) {
  if (instance.__container && instance.__container.__state) invalidate(instance.__container.__state);
}

function updateInstance(instance) {
  if (instance.onUpdate) instance.onUpdate(instance);
}

function createInstance(type, _ref, container, hostContext, internalInstanceHandle) {
  let {
    args = []
  } = _ref,
      props = _objectWithoutPropertiesLoose(_ref, ["args"]);

  let name = "" + type[0].toUpperCase() + type.slice(1);
  let instance;

  if (type === 'primitive') {
    instance = props.object;
    instance.__instance = true;
  } else if (type === 'new') {
    instance = new props.object(args);
  } else {
    const target = catalogue[name] || THREE[name];

    if (!target) {
      throw "\"" + name + "\" is not part of the THREE namespace! Did you forget to extend it? See: https://github.com/react-spring/react-three-fiber#using-3rd-party-non-three-namespaced-objects-in-the-scene-graph";
    }

    instance = is.arr(args) ? new target(...args) : new target(args);
  } // Bind to the root container in case portals are being used
  // This is perhaps better for event management as we can keep them on a single instance


  while (container.__container) {
    container = container.__container;
  } // TODO: https://github.com/facebook/react/issues/17147
  // If it's still not there it means the portal was created on a virtual node outside of react


  if (!roots.has(container)) {
    const fn = node => {
      if (!node.return) return node.stateNode && node.stateNode.containerInfo;else return fn(node.return);
    };

    container = fn(internalInstanceHandle);
  } // Apply initial props


  instance.__objects = [];
  instance.__container = container; // It should NOT call onUpdate on object instanciation, because it hasn't been added to the
  // view yet. If the callback relies on references for instance, they won't be ready yet, this is
  // why it passes "false" here

  applyProps(instance, props, {});
  return instance;
}

function appendChild(parentInstance, child) {
  if (child) {
    if (child.isObject3D) parentInstance.add(child);else {
      parentInstance.__objects.push(child);

      child.parent = parentInstance; // The attach attribute implies that the object attaches itself on the parent

      if (child.attach) parentInstance[child.attach] = child;else if (child.attachArray) {
        if (!is.arr(parentInstance[child.attachArray])) parentInstance[child.attachArray] = [];
        parentInstance[child.attachArray].push(child);
      } else if (child.attachObject) {
        if (!is.obj(parentInstance[child.attachObject[0]])) parentInstance[child.attachObject[0]] = {};
        parentInstance[child.attachObject[0]][child.attachObject[1]] = child;
      }
    }
    updateInstance(child);
    invalidateInstance(child);
  }
}

function insertBefore(parentInstance, child, beforeChild) {
  if (child) {
    if (child.isObject3D) {
      child.parent = parentInstance;
      child.dispatchEvent({
        type: 'added'
      });
      const restSiblings = parentInstance.children.filter(sibling => sibling !== child); // TODO: the order is out of whack if data objects are present, has to be recalculated

      const index = restSiblings.indexOf(beforeChild);
      parentInstance.children = [...restSiblings.slice(0, index), child, ...restSiblings.slice(index)];
      updateInstance(child);
    } else appendChild(parentInstance, child); // TODO: order!!!


    invalidateInstance(child);
  }
}

function removeRecursive(array, parent, clone = false) {
  if (array) {
    // Three uses splice op's internally we may have to shallow-clone the array in order to safely remove items
    const target = clone ? [...array] : array;
    target.forEach(child => removeChild(parent, child));
  }
}

function removeChild(parentInstance, child) {
  if (child) {
    if (child.isObject3D) {
      parentInstance.remove(child);
    } else {
      child.parent = null;
      if (parentInstance.__objects) parentInstance.__objects = parentInstance.__objects.filter(x => x !== child); // Remove attachment

      if (child.attach) parentInstance[child.attach] = null;else if (child.attachArray) parentInstance[child.attachArray] = parentInstance[child.attachArray].filter(x => x !== child);else if (child.attachObject) {
        delete parentInstance[child.attachObject[0]][child.attachObject[1]];
      }
    }

    invalidateInstance(child); // Allow objects to bail out of recursive dispose alltogether by passing dispose={null}

    if (child.dispose !== null) {
      unstable_runWithPriority(unstable_IdlePriority, () => {
        // Remove interactivity
        if (child.__container) child.__container.__interaction = child.__container.__interaction.filter(x => x !== child); // Remove nested child objects

        removeRecursive(child.__objects, child);
        removeRecursive(child.children, child, true); // Dispose item

        if (child.dispose) child.dispose(); // Remove references

        delete child.__container;
        delete child.__objects;
      });
    }
  }
}

function switchInstance(instance, type, newProps, fiber) {
  const parent = instance.parent;
  const newInstance = createInstance(type, newProps, instance.__container, null, fiber);
  removeChild(parent, instance);
  appendChild(parent, newInstance) // This evil hack switches the react-internal fiber node
  // https://github.com/facebook/react/issues/14983
  // https://github.com/facebook/react/pull/15021
  ;
  [fiber, fiber.alternate].forEach(fiber => {
    if (fiber !== null) {
      fiber.stateNode = newInstance;

      if (fiber.ref) {
        if (is.fun(fiber.ref)) fiber.ref(newInstance);else fiber.ref.current = newInstance;
      }
    }
  });
}

const Renderer = Reconciler({
  now: unstable_now,
  createInstance,
  removeChild,
  appendChild,
  insertBefore,
  // @ts-ignore
  warnsIfNotActing: true,
  supportsMutation: true,
  isPrimaryRenderer: false,
  scheduleTimeout: is.fun(setTimeout) ? setTimeout : undefined,
  cancelTimeout: is.fun(clearTimeout) ? clearTimeout : undefined,
  // @ts-ignore
  setTimeout: is.fun(setTimeout) ? setTimeout : undefined,
  // @ts-ignore
  clearTimeout: is.fun(clearTimeout) ? clearTimeout : undefined,
  noTimeout: -1,
  appendInitialChild: appendChild,
  appendChildToContainer: appendChild,
  removeChildFromContainer: removeChild,
  insertInContainerBefore: insertBefore,

  commitUpdate(instance, updatePayload, type, oldProps, newProps, fiber) {
    if (instance.__instance && newProps.object && newProps.object !== instance) {
      // <instance object={...} /> where the object reference has changed
      switchInstance(instance, type, newProps, fiber);
    } else {
      // This is a data object, let's extract critical information about it
      const {
        args: argsNew = []
      } = newProps,
            restNew = _objectWithoutPropertiesLoose(newProps, ["args"]);

      const {
        args: argsOld = []
      } = oldProps,
            restOld = _objectWithoutPropertiesLoose(oldProps, ["args"]); // If it has new props or arguments, then it needs to be re-instanciated


      const hasNewArgs = argsNew.some((value, index) => is.obj(value) ? Object.entries(value).some(([key, val]) => val !== argsOld[index][key]) : value !== argsOld[index]);

      if (hasNewArgs) {
        // Next we create a new instance and append it again
        switchInstance(instance, type, newProps, fiber);
      } else {
        // Otherwise just overwrite props
        applyProps(instance, restNew, restOld, true);
      }
    }
  },

  hideInstance(instance) {
    if (instance.isObject3D) {
      instance.visible = false;
      invalidateInstance(instance);
    }
  },

  unhideInstance(instance, props) {
    if (instance.isObject3D && props.visible == null || props.visible) {
      instance.visible = true;
      invalidateInstance(instance);
    }
  },

  hideTextInstance() {
    throw new Error('Text is not allowed in the react-three-fibre tree. You may have extraneous whitespace between components.');
  },

  getPublicInstance(instance) {
    return instance;
  },

  getRootHostContext() {
    return emptyObject;
  },

  getChildHostContext() {
    return emptyObject;
  },

  createTextInstance() {},

  finalizeInitialChildren() {
    return false;
  },

  prepareUpdate() {
    return emptyObject;
  },

  shouldDeprioritizeSubtree() {
    return false;
  },

  prepareForCommit() {},

  resetAfterCommit() {},

  shouldSetTextContent() {
    return false;
  }

});
const LegacyRoot = 0;
const ConcurrentRoot = 2;
const hasSymbol = is.fun(Symbol) && Symbol.for;
const REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
function render(element, container, state) {
  let root = roots.get(container);

  if (!root) {
    container.__state = state;
    let newRoot = root = Renderer.createContainer(container, state !== undefined && state.current.concurrent ? ConcurrentRoot : LegacyRoot, false);
    roots.set(container, newRoot);
  }

  Renderer.updateContainer(element, root, null, () => undefined);
  return Renderer.getPublicRootInstance(root);
}
function unmountComponentAtNode(container) {
  const root = roots.get(container);
  if (root) Renderer.updateContainer(null, root, null, () => void roots.delete(container));
}
function createPortal(children, containerInfo, implementation, key = null) {
  if (!containerInfo.__objects) containerInfo.__objects = [];
  return {
    $$typeof: REACT_PORTAL_TYPE,
    key: key == null ? null : '' + key,
    children,
    containerInfo,
    implementation
  };
}
Renderer.injectIntoDevTools({
  bundleType: process.env.NODE_ENV === 'production' ? 0 : 1,
  version: version,
  rendererPackageName: 'react-three-fiber',
  findHostInstanceByFiber: Renderer.findHostInstance
});

function isOrthographicCamera(def) {
  return def.isOrthographicCamera;
}

function makeId(event) {
  return (event.eventObject || event.object).uuid + '/' + event.index;
}

const stateContext = createContext({});
const useCanvas = props => {
  const {
    children,
    gl,
    camera,
    orthographic,
    raycaster,
    size,
    pixelRatio,
    vr = false,
    concurrent = false,
    shadowMap = false,
    sRGB = false,
    colorManagement = false,
    invalidateFrameloop = false,
    updateDefaultCamera = true,
    noEvents = false,
    onCreated,
    onPointerMissed
  } = props; // Local, reactive state

  const [ready, setReady] = useState(false);
  const [mouse] = useState(() => new Vector2());
  const [defaultRaycaster] = useState(() => {
    const ray = new Raycaster();

    if (raycaster) {
      const raycasterProps = _objectWithoutPropertiesLoose(raycaster, ["filter"]);

      applyProps(ray, raycasterProps, {});
    }

    return ray;
  });
  const [defaultScene] = useState(() => {
    const scene = new Scene();
    scene.__interaction = [];
    scene.__objects = [];
    return scene;
  });
  const [defaultCam, _setDefaultCamera] = useState(() => {
    const cam = orthographic ? new OrthographicCamera(0, 0, 0, 0, 0.1, 1000) : new PerspectiveCamera(75, 0, 0.1, 1000);
    cam.position.z = 5;
    if (camera) applyProps(cam, camera, {}); // Always look at [0, 0, 0]

    cam.lookAt(0, 0, 0);
    return cam;
  });
  const [clock] = useState(() => new Clock()); // Public state

  const state = useRef({
    ready: false,
    active: true,
    manual: 0,
    colorManagement,
    sRGB,
    vr,
    concurrent,
    noEvents,
    invalidateFrameloop: false,
    frames: 0,
    aspect: 0,
    subscribers: [],
    camera: defaultCam,
    scene: defaultScene,
    raycaster: defaultRaycaster,
    mouse,
    clock,
    gl,
    size,
    viewport: {
      width: 0,
      height: 0,
      factor: 0
    },
    initialClick: [0, 0],
    initialHits: [],
    pointer: new TinyEmitter(),
    captured: undefined,
    events: undefined,
    subscribe: (ref, priority = 0) => {
      // If this subscription was given a priority, it takes rendering into its own hands
      // For that reason we switch off automatic rendering and increase the manual flag
      // As long as this flag is positive (there could be multiple render subscription)
      // ..there can be no internal rendering at all
      if (priority) state.current.manual++;
      state.current.subscribers.push({
        ref,
        priority: priority
      }); // Sort layers from lowest to highest, meaning, highest priority renders last (on top of the other frames)

      state.current.subscribers = state.current.subscribers.sort((a, b) => a.priority - b.priority);
      return () => {
        // Decrease manual flag if this subscription had a priority
        if (priority) state.current.manual--;
        state.current.subscribers = state.current.subscribers.filter(s => s.ref !== ref);
      };
    },
    setDefaultCamera: camera => _setDefaultCamera(camera),
    invalidate: () => invalidate(state),
    intersect: (event = {}, prepare = true) => handlePointerMove(event, prepare)
  }); // Writes locals into public state for distribution among subscribers, context, etc

  useMemo(() => {
    state.current.ready = ready;
    state.current.size = size;
    state.current.camera = defaultCam;
    state.current.invalidateFrameloop = invalidateFrameloop;
    state.current.vr = vr;
    state.current.gl = gl;
    state.current.concurrent = concurrent;
    state.current.noEvents = noEvents;
  }, [invalidateFrameloop, vr, concurrent, noEvents, ready, size, defaultCam, gl]); // Adjusts default camera

  useMemo(() => {
    state.current.aspect = size.width / size.height;

    if (isOrthographicCamera(defaultCam)) {
      state.current.viewport = {
        width: size.width,
        height: size.height,
        factor: 1
      };
    } else {
      const target = new Vector3(0, 0, 0);
      const distance = defaultCam.position.distanceTo(target);
      const fov = defaultCam.fov * Math.PI / 180; // convert vertical fov to radians

      const height = 2 * Math.tan(fov / 2) * distance; // visible height

      const width = height * state.current.aspect;
      state.current.viewport = {
        width,
        height,
        factor: size.width / width
      };
    } // #92 (https://github.com/drcmda/react-three-fiber/issues/92)
    // Sometimes automatic default camera adjustment isn't wanted behaviour


    if (updateDefaultCamera) {
      if (isOrthographicCamera(defaultCam)) {
        defaultCam.left = size.width / -2;
        defaultCam.right = size.width / 2;
        defaultCam.top = size.height / 2;
        defaultCam.bottom = size.height / -2;
      } else {
        defaultCam.aspect = state.current.aspect;
      }

      defaultCam.updateProjectionMatrix(); // #178: https://github.com/react-spring/react-three-fiber/issues/178
      // Update matrix world since the renderer is a frame late

      defaultCam.updateMatrixWorld();
    }

    gl.setSize(size.width, size.height);
    if (ready) invalidate(state);
  }, [defaultCam, size, updateDefaultCamera]);
  /** Events ------------------------------------------------------------------------------------------------ */

  /** Sets up defaultRaycaster */

  const prepareRay = useCallback(({
    clientX,
    clientY
  }) => {
    if (clientX !== void 0) {
      const {
        left,
        right,
        top,
        bottom
      } = state.current.size;
      mouse.set((clientX - left) / (right - left) * 2 - 1, -((clientY - top) / (bottom - top)) * 2 + 1);
      defaultRaycaster.setFromCamera(mouse, state.current.camera);
    }
  }, []);
  /** Intersects interaction objects using the event input */

  const intersect = useCallback((event, filter) => {
    // Skip event handling when noEvents is set
    if (state.current.noEvents) return [];
    const seen = new Set();
    const hits = []; // Allow callers to eliminate event objects

    const eventsObjects = filter ? filter(state.current.scene.__interaction) : state.current.scene.__interaction; // Intersect known handler objects and filter against duplicates

    let intersects = defaultRaycaster.intersectObjects(eventsObjects, true).filter(item => {
      const id = makeId(item);
      if (seen.has(id)) return false;
      seen.add(id);
      return true;
    }); // #16031: (https://github.com/mrdoob/three.js/issues/16031)
    // Allow custom userland intersect sort order

    if (raycaster && raycaster.filter && sharedState.current) intersects = raycaster.filter(intersects, sharedState.current);

    for (let intersect of intersects) {
      let eventObject = intersect.object; // Bubble event up

      while (eventObject) {
        const handlers = eventObject.__handlers;
        if (handlers) hits.push(_extends({}, intersect, {
          eventObject
        }));
        eventObject = eventObject.parent;
      }
    }

    return hits;
  }, []);
  /**  Calculates click deltas */

  const calculateDistance = useCallback(event => {
    let dx = event.clientX - state.current.initialClick[0];
    let dy = event.clientY - state.current.initialClick[1];
    return Math.round(Math.sqrt(dx * dx + dy * dy));
  }, []);
  const hovered = useMemo(() => new Map(), []);
  /**  Handles intersections by forwarding them to handlers */

  const temp = new Vector3();
  const handleIntersects = useCallback((event, fn, filter) => {
    // Get fresh intersects
    let intersections = intersect(event, filter); // If the interaction is captured take that into account, the captured event has to be part of the intersects

    if (state.current.captured && event.type !== 'click' && event.type !== 'wheel') {
      state.current.captured.forEach(captured => {
        if (!intersections.find(hit => hit.eventObject === captured.eventObject)) intersections.push(captured);
      });
    } // If anything has been found, forward it to the event listeners


    if (intersections.length) {
      const unprojectedPoint = temp.set(mouse.x, mouse.y, 0).unproject(state.current.camera);
      const delta = event.type === 'click' ? calculateDistance(event) : 0;

      const releasePointerCapture = id => event.target.releasePointerCapture(id);

      const localState = {
        stopped: false,
        captured: false
      };

      for (let hit of intersections) {
        const setPointerCapture = id => {
          // If the hit is going to be captured flag that we're in captured state
          if (!localState.captured) {
            localState.captured = true; // The captured hit array is reset to collect hits

            state.current.captured = [];
          } // Push hits to the array


          if (state.current.captured) state.current.captured.push(hit) // Call the original event now
          ;
          event.target.setPointerCapture(id);
        };

        let raycastEvent = _extends({}, event, hit, {
          intersections,
          stopped: localState.stopped,
          delta,
          unprojectedPoint,
          ray: defaultRaycaster.ray,
          camera: state.current.camera,
          // Hijack stopPropagation, which just sets a flag
          stopPropagation: () => raycastEvent.stopped = localState.stopped = true,
          // Pointer-capture needs the hit, on which the user may call stopPropagation()
          // This makes it harder to use the actual event, because then we loose the connection
          // to the actual hit, which would mean it's picking up all intersects ...
          target: _extends({}, event.target, {
            setPointerCapture,
            releasePointerCapture
          }),
          currentTarget: _extends({}, event.currentTarget, {
            setPointerCapture,
            releasePointerCapture
          }),
          sourceEvent: event
        });

        fn(raycastEvent);

        if (localState.stopped === true) {
          // Propagation is stopped, remove all other hover records
          // An event handler is only allowed to flush other handlers if it is hovered itself
          if (hovered.size && Array.from(hovered.values()).find(i => i.object === hit.object)) {
            handlePointerCancel(raycastEvent, [hit]);
          }

          break;
        }
      }
    }

    return intersections;
  }, []);
  const handlePointerMove = useCallback((event, prepare = true) => {
    state.current.pointer.emit('pointerMove', event);
    if (prepare) prepareRay(event);
    const hits = handleIntersects(event, data => {
      const eventObject = data.eventObject;
      const handlers = eventObject.__handlers; // Check presence of handlers

      if (!handlers) return; // Call mouse move

      if (handlers.pointerMove) handlers.pointerMove(data); // Check if mouse enter or out is present

      if (handlers.pointerOver || handlers.pointerEnter || handlers.pointerOut || handlers.pointerLeave) {
        const id = makeId(data);
        const hoveredItem = hovered.get(id);

        if (!hoveredItem) {
          // If the object wasn't previously hovered, book it and call its handler
          hovered.set(id, data);
          if (handlers.pointerOver) handlers.pointerOver(_extends({}, data, {
            type: 'pointerover'
          }));
          if (handlers.pointerEnter) handlers.pointerEnter(_extends({}, data, {
            type: 'pointerenter'
          }));
        } else if (hoveredItem.stopped) {
          // If the object was previously hovered and stopped, we shouldn't allow other items to proceed
          data.stopPropagation();
        }
      }
    }, // This is onPointerMove, we're only interested in events that exhibit this particular event
    objects => objects.filter(obj => ['Move', 'Over', 'Enter', 'Out', 'Leave'].some(name => obj.__handlers['pointer' + name]))); // Take care of unhover

    handlePointerCancel(event, hits, prepare);
    return hits;
  }, []);
  const handlePointerCancel = useCallback((event, hits, prepare = true) => {
    state.current.pointer.emit('pointerCancel', event);
    if (prepare) prepareRay(event);
    if (!hits) hits = handleIntersects(event, () => null);
    Array.from(hovered.values()).forEach(data => {
      // When no objects were hit or the the hovered object wasn't found underneath the cursor
      // we call onPointerOut and delete the object from the hovered-elements map
      if (hits && (!hits.length || !hits.find(i => i.eventObject === data.eventObject))) {
        const eventObject = data.eventObject;
        const handlers = eventObject.__handlers;

        if (handlers) {
          if (handlers.pointerOut) handlers.pointerOut(_extends({}, data, {
            type: 'pointerout'
          }));
          if (handlers.pointerLeave) handlers.pointerLeave(_extends({}, data, {
            type: 'pointerleave'
          }));
        }

        hovered.delete(makeId(data));
      }
    });
  }, []);
  const handlePointer = useCallback(name => (event, prepare = true) => {
    state.current.pointer.emit(name, event);
    if (prepare) prepareRay(event);
    const hits = handleIntersects(event, data => {
      const eventObject = data.eventObject;
      const handlers = eventObject.__handlers;

      if (handlers && handlers[name]) {
        // Forward all events back to their respective handlers with the exception of click events,
        // which must use the initial target
        if (name !== 'click' && name !== 'contextMenu' && name !== 'doubleClick' || state.current.initialHits.includes(eventObject)) {
          handlers[name](data);
        }
      }
    }); // If a click yields no results, pass it back to the user as a miss

    if (name === 'pointerDown') {
      state.current.initialClick = [event.clientX, event.clientY];
      state.current.initialHits = hits.map(hit => hit.eventObject);
    }

    if ((name === 'click' || name === 'contextMenu' || name === 'doubleClick') && !hits.length && onPointerMissed) {
      if (calculateDistance(event) <= 2) onPointerMissed();
    }
  }, [onPointerMissed]);
  useMemo(() => {
    state.current.events = {
      onClick: handlePointer('click'),
      onContextMenu: handlePointer('contextMenu'),
      onDoubleClick: handlePointer('doubleClick'),
      onWheel: handlePointer('wheel'),
      onPointerDown: handlePointer('pointerDown'),
      onPointerUp: handlePointer('pointerUp'),
      onPointerLeave: e => handlePointerCancel(e, []),
      onPointerMove: handlePointerMove,
      // onGotPointerCapture is not needed any longer because the behaviour is hacked into
      // the event itself (see handleIntersects). But in order for non-web targets to simulate
      // it we keep the legacy event, which simply flags all current intersects as captured
      onGotPointerCaptureLegacy: e => state.current.captured = intersect(e),
      onLostPointerCapture: e => (state.current.captured = undefined, handlePointerCancel(e))
    };
  }, [onPointerMissed]);
  /** Events ------------------------------------------------------------------------------------------------- */
  // Only trigger the context provider when necessary

  const sharedState = useRef();
  useMemo(() => {
    const _state$current = state.current,
          props = _objectWithoutPropertiesLoose(_state$current, ["ready", "manual", "vr", "noEvents", "invalidateFrameloop", "frames", "subscribers", "captured", "initialClick", "initialHits"]);

    sharedState.current = props;
  }, [size, defaultCam]); // Update pixel ratio

  useLayoutEffect(() => void (pixelRatio && gl.setPixelRatio(pixelRatio)), [pixelRatio]); // Update shadow map

  useLayoutEffect(() => {
    if (shadowMap) {
      gl.shadowMap.enabled = true;
      if (typeof shadowMap === 'object') Object.assign(gl, shadowMap);else gl.shadowMap.type = PCFSoftShadowMap;
    }

    if (sRGB || colorManagement) {
      gl.toneMapping = ACESFilmicToneMapping;
      gl.outputEncoding = sRGBEncoding;
    }
  }, [shadowMap, sRGB, colorManagement]); // This component is a bridge into the three render context, when it gets rendered
  // we know we are ready to compile shaders, call subscribers, etc

  const Canvas = useCallback(function Canvas(props) {
    const activate = () => setReady(true); // eslint-disable-next-line react-hooks/rules-of-hooks


    useEffect(() => {
      const result = onCreated && onCreated(state.current);
      return void (result && result.then ? result.then(activate) : activate());
    }, []);
    return props.children;
  }, []); // Render v-dom into scene

  useLayoutEffect(() => {
    render( /*#__PURE__*/createElement(Canvas, null, /*#__PURE__*/createElement(stateContext.Provider, {
      value: sharedState.current
    }, typeof children === 'function' ? children(state.current) : children)), defaultScene, state);
  }, [ready, children, sharedState.current]);
  useLayoutEffect(() => {
    if (ready) {
      // Start render-loop, either via RAF or setAnimationLoop for VR
      if (!state.current.vr) {
        invalidate(state);
      } else if ((gl.xr || gl.vr) && gl.setAnimationLoop) {
        (gl.xr || gl.vr).enabled = true;
        gl.setAnimationLoop(t => renderGl(state, t, 0, true));
      } else console.warn('the gl instance does not support VR!');
    }
  }, [ready, invalidateFrameloop]); // Dispose renderer on unmount

  useEffect(() => () => {
    if (state.current.gl) {
      if (state.current.gl.forceContextLoss) state.current.gl.forceContextLoss();
      if (state.current.gl.dispose) state.current.gl.dispose();
      state.current.gl = undefined;
      unmountComponentAtNode(state.current.scene);
      state.current.active = false;
    }
  }, []);
  return state.current.events;
};

function useContext(context) {
  let result = useContext$1(context);

  if (!result) {
    console.warn('hooks can only be used within the canvas! https://github.com/react-spring/react-three-fiber#hooks');
  }

  return result;
}

function useFrame(callback, renderPriority = 0) {
  const {
    subscribe
  } = useContext(stateContext); // Update ref

  const ref = useRef(callback);
  useLayoutEffect(() => void (ref.current = callback), [callback]); // Subscribe/unsub

  useEffect(() => {
    const unsubscribe = subscribe(ref, renderPriority);
    return () => unsubscribe();
  }, [renderPriority]);
  return null;
}
function useThree() {
  return useContext(stateContext);
}
function useUpdate(callback, dependents, optionalRef) {
  const {
    invalidate
  } = useContext(stateContext);
  const localRef = useRef();
  const ref = optionalRef ? optionalRef : localRef;
  useLayoutEffect(() => {
    if (ref.current) {
      callback(ref.current);
      invalidate();
    }
  }, dependents);
  return ref;
}
function useResource(optionalRef) {
  const [_, forceUpdate] = useState(false);
  const localRef = useRef(undefined);
  const ref = optionalRef ? optionalRef : localRef;
  useLayoutEffect(() => void forceUpdate(i => !i), [ref.current]);
  return [ref, ref.current];
}
const blackList = ['id', 'uuid', 'type', 'children', 'parent', 'matrix', 'matrixWorld', 'matrixWorldNeedsUpdate', 'modelViewMatrix', 'normalMatrix'];

function prune(props) {
  const reducedProps = _extends({}, props); // Remove black listed props


  blackList.forEach(name => delete reducedProps[name]); // Remove functions

  Object.keys(reducedProps).forEach(name => typeof reducedProps[name] === 'function' && delete reducedProps[name]); // Prune materials and geometries

  if (reducedProps.material) reducedProps.material = prune(reducedProps.material);
  if (reducedProps.geometry) reducedProps.geometry = prune(reducedProps.geometry); // Return cleansed object

  return reducedProps;
}

function useLoader(Proto, url, extensions) {
  const loader = useMemo(() => {
    // Construct new loader
    const temp = new Proto(); // Run loader extensions

    if (extensions) extensions(temp);
    return temp;
  }, [Proto]); // Use suspense to load async assets

  const results = usePromise((Proto, url) => {
    const urlArray = Array.isArray(url) ? url : [url];
    return Promise.all(urlArray.map(url => new Promise(res => loader.load(url, data => {
      if (data.scene) {
        // This has to be deprecated at some point!
        data.__$ = []; // Nodes and materials are better

        data.nodes = {};
        data.materials = {};
        data.scene.traverse(obj => {
          data.__$.push(prune(obj));

          if (obj.name) data.nodes = _extends({}, data.nodes, {
            [obj.name]: obj
          });
          if (obj.material && !data.materials[obj.material.name]) data.materials[obj.material.name] = obj.material;
        });
      }

      res(data);
    }))));
  }, [Proto, url]); // Return the object/s

  return Array.isArray(url) ? results : results[0];
}
const useCamera = () => {
  console.warn("The useCamera hook was moved to: https://github.com/react-spring/drei");
  return null;
};

const defaultStyles = {
  position: 'relative',
  width: '100%',
  height: '100%',
  overflow: 'hidden'
};

function Content(_ref) {
  let {
    children,
    setEvents,
    container,
    renderer,
    effects
  } = _ref,
      props = _objectWithoutPropertiesLoose(_ref, ["children", "setEvents", "container", "renderer", "effects"]);

  // Create renderer
  const [gl] = useState(renderer);
  if (!gl) console.warn('No renderer created!'); // Mount and unmount managemenbt

  useEffect(() => effects && effects(gl, container), []); // Init canvas, fetch events, hand them back to the wrapping div

  const events = useCanvas(_extends({}, props, {
    children,
    gl: gl
  }));
  useEffect(() => void setEvents(events), [events]);
  return null;
}

const ResizeContainer = /*#__PURE__*/React__default.memo(function ResizeContainer(props) {
  const {
    preRender,
    resize,
    style
  } = props,
        restSpread = _objectWithoutPropertiesLoose(props, ["renderer", "effects", "children", "vr", "gl2", "concurrent", "shadowMap", "sRGB", "colorManagement", "orthographic", "invalidateFrameloop", "updateDefaultCamera", "noEvents", "gl", "camera", "raycaster", "pixelRatio", "onCreated", "onPointerMissed", "preRender", "resize", "style"]);

  const containerRef = useRef(); // onGotPointerCaptureLegacy is a fake event used by non-web targets to simulate poinzter capture

  const [_ref2, setEvents] = useState({});

  const events = _objectWithoutPropertiesLoose(_ref2, ["onGotPointerCaptureLegacy"]);

  const [bind, size] = useMeasure(resize || {
    scroll: true,
    debounce: {
      scroll: 50,
      resize: 0
    },
    polyfill: typeof window === 'undefined' || !window.ResizeObserver ? ResizeObserver : undefined
  }); // Flag view ready once it's been measured out

  const readyFlag = useRef(false);
  const ready = useMemo(() => readyFlag.current = readyFlag.current || !!size.width && !!size.height, [size]);
  const state = useMemo(() => ({
    size,
    setEvents,
    container: containerRef.current
  }), [size]); // Allow Gatsby, Next and other server side apps to run. Will output styles to reduce flickering.

  if (typeof window === 'undefined') return /*#__PURE__*/React__default.createElement("div", _extends({
    style: _extends({}, defaultStyles, style)
  }, restSpread), preRender); // Render the canvas into the dom

  return /*#__PURE__*/React__default.createElement("div", _extends({
    ref: mergeRefs([bind, containerRef]),
    style: _extends({}, defaultStyles, style)
  }, events, restSpread), preRender, ready && /*#__PURE__*/React__default.createElement(Content, _extends({}, props, state)));
});

const Canvas = /*#__PURE__*/React__default.memo(function Canvas(_ref) {
  let {
    children
  } = _ref,
      props = _objectWithoutPropertiesLoose(_ref, ["children"]);

  const canvasRef = useRef();
  return /*#__PURE__*/React__default.createElement(ResizeContainer, _extends({}, props, {
    renderer: () => {
      if (canvasRef.current) {
        const params = _extends({
          antialias: true,
          alpha: true
        }, props.gl);

        const temp = new WebGLRenderer(_extends({
          canvas: canvasRef.current,
          context: props.gl2 ? canvasRef.current.getContext('webgl2', params) : undefined
        }, params));
        return temp;
      }
    },
    preRender: /*#__PURE__*/React__default.createElement("canvas", {
      ref: canvasRef,
      style: {
        display: 'block'
      }
    })
  }), children);
});
const Dom = () => {
  console.warn("The experimental <Dom> component was renamed to <HTML> and moved to: https://github.com/react-spring/drei");
  return null;
};

export { Canvas, Dom, Renderer, addEffect, addTail, applyProps, createPortal, extend, invalidate, isOrthographicCamera, render, renderGl, stateContext, unmountComponentAtNode, useCamera, useCanvas, useFrame, useLoader, useResource, useThree, useUpdate };