@react-three/lightmap/dist/lightmap.cjs.development.js

In-browser lightmap/AO baker for react-three-fiber and ThreeJS

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var React = require('react');
var React__default = _interopDefault(React);
var THREE = require('three');
var potpack = _interopDefault(require('potpack'));
var fiber = require('@react-three/fiber');

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
  try {
    var info = gen[key](arg);
    var value = info.value;
  } catch (error) {
    reject(error);
    return;
  }

  if (info.done) {
    resolve(value);
  } else {
    Promise.resolve(value).then(_next, _throw);
  }
}

function _asyncToGenerator(fn) {
  return function () {
    var self = this,
        args = arguments;
    return new Promise(function (resolve, reject) {
      var gen = fn.apply(self, args);

      function _next(value) {
        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
      }

      function _throw(err) {
        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
      }

      _next(undefined);
    });
  };
}

function _extends() {
  _extends = Object.assign || function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];

      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }

    return target;
  };

  return _extends.apply(this, arguments);
}

function _objectWithoutPropertiesLoose(source, excluded) {
  if (source == null) return {};
  var target = {};
  var sourceKeys = Object.keys(source);
  var key, i;

  for (i = 0; i < sourceKeys.length; i++) {
    key = sourceKeys[i];
    if (excluded.indexOf(key) >= 0) continue;
    target[key] = source[key];
  }

  return target;
}

function _unsupportedIterableToArray(o, minLen) {
  if (!o) return;
  if (typeof o === "string") return _arrayLikeToArray(o, minLen);
  var n = Object.prototype.toString.call(o).slice(8, -1);
  if (n === "Object" && o.constructor) n = o.constructor.name;
  if (n === "Map" || n === "Set") return Array.from(o);
  if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}

function _arrayLikeToArray(arr, len) {
  if (len == null || len > arr.length) len = arr.length;

  for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];

  return arr2;
}

function _createForOfIteratorHelperLoose(o, allowArrayLike) {
  var it;

  if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) {
    if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
      if (it) o = it;
      var i = 0;
      return function () {
        if (i >= o.length) return {
          done: true
        };
        return {
          done: false,
          value: o[i++]
        };
      };
    }

    throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
  }

  it = o[Symbol.iterator]();
  return it.next.bind(it);
}

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var runtime_1 = createCommonjsModule(function (module) {
/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

var runtime = (function (exports) {

  var Op = Object.prototype;
  var hasOwn = Op.hasOwnProperty;
  var undefined$1; // More compressible than void 0.
  var $Symbol = typeof Symbol === "function" ? Symbol : {};
  var iteratorSymbol = $Symbol.iterator || "@@iterator";
  var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
  var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";

  function define(obj, key, value) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
    return obj[key];
  }
  try {
    // IE 8 has a broken Object.defineProperty that only works on DOM objects.
    define({}, "");
  } catch (err) {
    define = function(obj, key, value) {
      return obj[key] = value;
    };
  }

  function wrap(innerFn, outerFn, self, tryLocsList) {
    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
    var generator = Object.create(protoGenerator.prototype);
    var context = new Context(tryLocsList || []);

    // The ._invoke method unifies the implementations of the .next,
    // .throw, and .return methods.
    generator._invoke = makeInvokeMethod(innerFn, self, context);

    return generator;
  }
  exports.wrap = wrap;

  // Try/catch helper to minimize deoptimizations. Returns a completion
  // record like context.tryEntries[i].completion. This interface could
  // have been (and was previously) designed to take a closure to be
  // invoked without arguments, but in all the cases we care about we
  // already have an existing method we want to call, so there's no need
  // to create a new function object. We can even get away with assuming
  // the method takes exactly one argument, since that happens to be true
  // in every case, so we don't have to touch the arguments object. The
  // only additional allocation required is the completion record, which
  // has a stable shape and so hopefully should be cheap to allocate.
  function tryCatch(fn, obj, arg) {
    try {
      return { type: "normal", arg: fn.call(obj, arg) };
    } catch (err) {
      return { type: "throw", arg: err };
    }
  }

  var GenStateSuspendedStart = "suspendedStart";
  var GenStateSuspendedYield = "suspendedYield";
  var GenStateExecuting = "executing";
  var GenStateCompleted = "completed";

  // Returning this object from the innerFn has the same effect as
  // breaking out of the dispatch switch statement.
  var ContinueSentinel = {};

  // Dummy constructor functions that we use as the .constructor and
  // .constructor.prototype properties for functions that return Generator
  // objects. For full spec compliance, you may wish to configure your
  // minifier not to mangle the names of these two functions.
  function Generator() {}
  function GeneratorFunction() {}
  function GeneratorFunctionPrototype() {}

  // This is a polyfill for %IteratorPrototype% for environments that
  // don't natively support it.
  var IteratorPrototype = {};
  IteratorPrototype[iteratorSymbol] = function () {
    return this;
  };

  var getProto = Object.getPrototypeOf;
  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
  if (NativeIteratorPrototype &&
      NativeIteratorPrototype !== Op &&
      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
    // This environment has a native %IteratorPrototype%; use it instead
    // of the polyfill.
    IteratorPrototype = NativeIteratorPrototype;
  }

  var Gp = GeneratorFunctionPrototype.prototype =
    Generator.prototype = Object.create(IteratorPrototype);
  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
  GeneratorFunctionPrototype.constructor = GeneratorFunction;
  GeneratorFunction.displayName = define(
    GeneratorFunctionPrototype,
    toStringTagSymbol,
    "GeneratorFunction"
  );

  // Helper for defining the .next, .throw, and .return methods of the
  // Iterator interface in terms of a single ._invoke method.
  function defineIteratorMethods(prototype) {
    ["next", "throw", "return"].forEach(function(method) {
      define(prototype, method, function(arg) {
        return this._invoke(method, arg);
      });
    });
  }

  exports.isGeneratorFunction = function(genFun) {
    var ctor = typeof genFun === "function" && genFun.constructor;
    return ctor
      ? ctor === GeneratorFunction ||
        // For the native GeneratorFunction constructor, the best we can
        // do is to check its .name property.
        (ctor.displayName || ctor.name) === "GeneratorFunction"
      : false;
  };

  exports.mark = function(genFun) {
    if (Object.setPrototypeOf) {
      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
    } else {
      genFun.__proto__ = GeneratorFunctionPrototype;
      define(genFun, toStringTagSymbol, "GeneratorFunction");
    }
    genFun.prototype = Object.create(Gp);
    return genFun;
  };

  // Within the body of any async function, `await x` is transformed to
  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
  // `hasOwn.call(value, "__await")` to determine if the yielded value is
  // meant to be awaited.
  exports.awrap = function(arg) {
    return { __await: arg };
  };

  function AsyncIterator(generator, PromiseImpl) {
    function invoke(method, arg, resolve, reject) {
      var record = tryCatch(generator[method], generator, arg);
      if (record.type === "throw") {
        reject(record.arg);
      } else {
        var result = record.arg;
        var value = result.value;
        if (value &&
            typeof value === "object" &&
            hasOwn.call(value, "__await")) {
          return PromiseImpl.resolve(value.__await).then(function(value) {
            invoke("next", value, resolve, reject);
          }, function(err) {
            invoke("throw", err, resolve, reject);
          });
        }

        return PromiseImpl.resolve(value).then(function(unwrapped) {
          // When a yielded Promise is resolved, its final value becomes
          // the .value of the Promise<{value,done}> result for the
          // current iteration.
          result.value = unwrapped;
          resolve(result);
        }, function(error) {
          // If a rejected Promise was yielded, throw the rejection back
          // into the async generator function so it can be handled there.
          return invoke("throw", error, resolve, reject);
        });
      }
    }

    var previousPromise;

    function enqueue(method, arg) {
      function callInvokeWithMethodAndArg() {
        return new PromiseImpl(function(resolve, reject) {
          invoke(method, arg, resolve, reject);
        });
      }

      return previousPromise =
        // If enqueue has been called before, then we want to wait until
        // all previous Promises have been resolved before calling invoke,
        // so that results are always delivered in the correct order. If
        // enqueue has not been called before, then it is important to
        // call invoke immediately, without waiting on a callback to fire,
        // so that the async generator function has the opportunity to do
        // any necessary setup in a predictable way. This predictability
        // is why the Promise constructor synchronously invokes its
        // executor callback, and why async functions synchronously
        // execute code before the first await. Since we implement simple
        // async functions in terms of async generators, it is especially
        // important to get this right, even though it requires care.
        previousPromise ? previousPromise.then(
          callInvokeWithMethodAndArg,
          // Avoid propagating failures to Promises returned by later
          // invocations of the iterator.
          callInvokeWithMethodAndArg
        ) : callInvokeWithMethodAndArg();
    }

    // Define the unified helper method that is used to implement .next,
    // .throw, and .return (see defineIteratorMethods).
    this._invoke = enqueue;
  }

  defineIteratorMethods(AsyncIterator.prototype);
  AsyncIterator.prototype[asyncIteratorSymbol] = function () {
    return this;
  };
  exports.AsyncIterator = AsyncIterator;

  // Note that simple async functions are implemented on top of
  // AsyncIterator objects; they just return a Promise for the value of
  // the final result produced by the iterator.
  exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
    if (PromiseImpl === void 0) PromiseImpl = Promise;

    var iter = new AsyncIterator(
      wrap(innerFn, outerFn, self, tryLocsList),
      PromiseImpl
    );

    return exports.isGeneratorFunction(outerFn)
      ? iter // If outerFn is a generator, return the full iterator.
      : iter.next().then(function(result) {
          return result.done ? result.value : iter.next();
        });
  };

  function makeInvokeMethod(innerFn, self, context) {
    var state = GenStateSuspendedStart;

    return function invoke(method, arg) {
      if (state === GenStateExecuting) {
        throw new Error("Generator is already running");
      }

      if (state === GenStateCompleted) {
        if (method === "throw") {
          throw arg;
        }

        // Be forgiving, per 25.3.3.3.3 of the spec:
        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
        return doneResult();
      }

      context.method = method;
      context.arg = arg;

      while (true) {
        var delegate = context.delegate;
        if (delegate) {
          var delegateResult = maybeInvokeDelegate(delegate, context);
          if (delegateResult) {
            if (delegateResult === ContinueSentinel) continue;
            return delegateResult;
          }
        }

        if (context.method === "next") {
          // Setting context._sent for legacy support of Babel's
          // function.sent implementation.
          context.sent = context._sent = context.arg;

        } else if (context.method === "throw") {
          if (state === GenStateSuspendedStart) {
            state = GenStateCompleted;
            throw context.arg;
          }

          context.dispatchException(context.arg);

        } else if (context.method === "return") {
          context.abrupt("return", context.arg);
        }

        state = GenStateExecuting;

        var record = tryCatch(innerFn, self, context);
        if (record.type === "normal") {
          // If an exception is thrown from innerFn, we leave state ===
          // GenStateExecuting and loop back for another invocation.
          state = context.done
            ? GenStateCompleted
            : GenStateSuspendedYield;

          if (record.arg === ContinueSentinel) {
            continue;
          }

          return {
            value: record.arg,
            done: context.done
          };

        } else if (record.type === "throw") {
          state = GenStateCompleted;
          // Dispatch the exception by looping back around to the
          // context.dispatchException(context.arg) call above.
          context.method = "throw";
          context.arg = record.arg;
        }
      }
    };
  }

  // Call delegate.iterator[context.method](context.arg) and handle the
  // result, either by returning a { value, done } result from the
  // delegate iterator, or by modifying context.method and context.arg,
  // setting context.delegate to null, and returning the ContinueSentinel.
  function maybeInvokeDelegate(delegate, context) {
    var method = delegate.iterator[context.method];
    if (method === undefined$1) {
      // A .throw or .return when the delegate iterator has no .throw
      // method always terminates the yield* loop.
      context.delegate = null;

      if (context.method === "throw") {
        // Note: ["return"] must be used for ES3 parsing compatibility.
        if (delegate.iterator["return"]) {
          // If the delegate iterator has a return method, give it a
          // chance to clean up.
          context.method = "return";
          context.arg = undefined$1;
          maybeInvokeDelegate(delegate, context);

          if (context.method === "throw") {
            // If maybeInvokeDelegate(context) changed context.method from
            // "return" to "throw", let that override the TypeError below.
            return ContinueSentinel;
          }
        }

        context.method = "throw";
        context.arg = new TypeError(
          "The iterator does not provide a 'throw' method");
      }

      return ContinueSentinel;
    }

    var record = tryCatch(method, delegate.iterator, context.arg);

    if (record.type === "throw") {
      context.method = "throw";
      context.arg = record.arg;
      context.delegate = null;
      return ContinueSentinel;
    }

    var info = record.arg;

    if (! info) {
      context.method = "throw";
      context.arg = new TypeError("iterator result is not an object");
      context.delegate = null;
      return ContinueSentinel;
    }

    if (info.done) {
      // Assign the result of the finished delegate to the temporary
      // variable specified by delegate.resultName (see delegateYield).
      context[delegate.resultName] = info.value;

      // Resume execution at the desired location (see delegateYield).
      context.next = delegate.nextLoc;

      // If context.method was "throw" but the delegate handled the
      // exception, let the outer generator proceed normally. If
      // context.method was "next", forget context.arg since it has been
      // "consumed" by the delegate iterator. If context.method was
      // "return", allow the original .return call to continue in the
      // outer generator.
      if (context.method !== "return") {
        context.method = "next";
        context.arg = undefined$1;
      }

    } else {
      // Re-yield the result returned by the delegate method.
      return info;
    }

    // The delegate iterator is finished, so forget it and continue with
    // the outer generator.
    context.delegate = null;
    return ContinueSentinel;
  }

  // Define Generator.prototype.{next,throw,return} in terms of the
  // unified ._invoke helper method.
  defineIteratorMethods(Gp);

  define(Gp, toStringTagSymbol, "Generator");

  // A Generator should always return itself as the iterator object when the
  // @@iterator function is called on it. Some browsers' implementations of the
  // iterator prototype chain incorrectly implement this, causing the Generator
  // object to not be returned from this call. This ensures that doesn't happen.
  // See https://github.com/facebook/regenerator/issues/274 for more details.
  Gp[iteratorSymbol] = function() {
    return this;
  };

  Gp.toString = function() {
    return "[object Generator]";
  };

  function pushTryEntry(locs) {
    var entry = { tryLoc: locs[0] };

    if (1 in locs) {
      entry.catchLoc = locs[1];
    }

    if (2 in locs) {
      entry.finallyLoc = locs[2];
      entry.afterLoc = locs[3];
    }

    this.tryEntries.push(entry);
  }

  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal";
    delete record.arg;
    entry.completion = record;
  }

  function Context(tryLocsList) {
    // The root entry object (effectively a try statement without a catch
    // or a finally block) gives us a place to store values thrown from
    // locations where there is no enclosing try statement.
    this.tryEntries = [{ tryLoc: "root" }];
    tryLocsList.forEach(pushTryEntry, this);
    this.reset(true);
  }

  exports.keys = function(object) {
    var keys = [];
    for (var key in object) {
      keys.push(key);
    }
    keys.reverse();

    // Rather than returning an object with a next method, we keep
    // things simple and return the next function itself.
    return function next() {
      while (keys.length) {
        var key = keys.pop();
        if (key in object) {
          next.value = key;
          next.done = false;
          return next;
        }
      }

      // To avoid creating an additional object, we just hang the .value
      // and .done properties off the next function object itself. This
      // also ensures that the minifier will not anonymize the function.
      next.done = true;
      return next;
    };
  };

  function values(iterable) {
    if (iterable) {
      var iteratorMethod = iterable[iteratorSymbol];
      if (iteratorMethod) {
        return iteratorMethod.call(iterable);
      }

      if (typeof iterable.next === "function") {
        return iterable;
      }

      if (!isNaN(iterable.length)) {
        var i = -1, next = function next() {
          while (++i < iterable.length) {
            if (hasOwn.call(iterable, i)) {
              next.value = iterable[i];
              next.done = false;
              return next;
            }
          }

          next.value = undefined$1;
          next.done = true;

          return next;
        };

        return next.next = next;
      }
    }

    // Return an iterator with no values.
    return { next: doneResult };
  }
  exports.values = values;

  function doneResult() {
    return { value: undefined$1, done: true };
  }

  Context.prototype = {
    constructor: Context,

    reset: function(skipTempReset) {
      this.prev = 0;
      this.next = 0;
      // Resetting context._sent for legacy support of Babel's
      // function.sent implementation.
      this.sent = this._sent = undefined$1;
      this.done = false;
      this.delegate = null;

      this.method = "next";
      this.arg = undefined$1;

      this.tryEntries.forEach(resetTryEntry);

      if (!skipTempReset) {
        for (var name in this) {
          // Not sure about the optimal order of these conditions:
          if (name.charAt(0) === "t" &&
              hasOwn.call(this, name) &&
              !isNaN(+name.slice(1))) {
            this[name] = undefined$1;
          }
        }
      }
    },

    stop: function() {
      this.done = true;

      var rootEntry = this.tryEntries[0];
      var rootRecord = rootEntry.completion;
      if (rootRecord.type === "throw") {
        throw rootRecord.arg;
      }

      return this.rval;
    },

    dispatchException: function(exception) {
      if (this.done) {
        throw exception;
      }

      var context = this;
      function handle(loc, caught) {
        record.type = "throw";
        record.arg = exception;
        context.next = loc;

        if (caught) {
          // If the dispatched exception was caught by a catch block,
          // then let that catch block handle the exception normally.
          context.method = "next";
          context.arg = undefined$1;
        }

        return !! caught;
      }

      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        var record = entry.completion;

        if (entry.tryLoc === "root") {
          // Exception thrown outside of any try block that could handle
          // it, so set the completion value of the entire function to
          // throw the exception.
          return handle("end");
        }

        if (entry.tryLoc <= this.prev) {
          var hasCatch = hasOwn.call(entry, "catchLoc");
          var hasFinally = hasOwn.call(entry, "finallyLoc");

          if (hasCatch && hasFinally) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            } else if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else if (hasCatch) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            }

          } else if (hasFinally) {
            if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else {
            throw new Error("try statement without catch or finally");
          }
        }
      }
    },

    abrupt: function(type, arg) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc <= this.prev &&
            hasOwn.call(entry, "finallyLoc") &&
            this.prev < entry.finallyLoc) {
          var finallyEntry = entry;
          break;
        }
      }

      if (finallyEntry &&
          (type === "break" ||
           type === "continue") &&
          finallyEntry.tryLoc <= arg &&
          arg <= finallyEntry.finallyLoc) {
        // Ignore the finally entry if control is not jumping to a
        // location outside the try/catch block.
        finallyEntry = null;
      }

      var record = finallyEntry ? finallyEntry.completion : {};
      record.type = type;
      record.arg = arg;

      if (finallyEntry) {
        this.method = "next";
        this.next = finallyEntry.finallyLoc;
        return ContinueSentinel;
      }

      return this.complete(record);
    },

    complete: function(record, afterLoc) {
      if (record.type === "throw") {
        throw record.arg;
      }

      if (record.type === "break" ||
          record.type === "continue") {
        this.next = record.arg;
      } else if (record.type === "return") {
        this.rval = this.arg = record.arg;
        this.method = "return";
        this.next = "end";
      } else if (record.type === "normal" && afterLoc) {
        this.next = afterLoc;
      }

      return ContinueSentinel;
    },

    finish: function(finallyLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.finallyLoc === finallyLoc) {
          this.complete(entry.completion, entry.afterLoc);
          resetTryEntry(entry);
          return ContinueSentinel;
        }
      }
    },

    "catch": function(tryLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc === tryLoc) {
          var record = entry.completion;
          if (record.type === "throw") {
            var thrown = record.arg;
            resetTryEntry(entry);
          }
          return thrown;
        }
      }

      // The context.catch method must only be called with a location
      // argument that corresponds to a known catch block.
      throw new Error("illegal catch attempt");
    },

    delegateYield: function(iterable, resultName, nextLoc) {
      this.delegate = {
        iterator: values(iterable),
        resultName: resultName,
        nextLoc: nextLoc
      };

      if (this.method === "next") {
        // Deliberately forget the last sent value so that we don't
        // accidentally pass it on to the delegate.
        this.arg = undefined$1;
      }

      return ContinueSentinel;
    }
  };

  // Regardless of whether this script is executing as a CommonJS module
  // or not, return the runtime object so that we can declare the variable
  // regeneratorRuntime in the outer scope, which allows this module to be
  // injected easily by `bin/regenerator --include-runtime script.js`.
  return exports;

}(
  // If this script is executing as a CommonJS module, use module.exports
  // as the regeneratorRuntime namespace. Otherwise create a new empty
  // object. Either way, the resulting object will be used to initialize
  // the regeneratorRuntime variable at the top of this file.
   module.exports 
));

try {
  regeneratorRuntime = runtime;
} catch (accidentalStrictMode) {
  // This module should not be running in strict mode, so the above
  // assignment should always work unless something is misconfigured. Just
  // in case runtime.js accidentally runs in strict mode, we can escape
  // strict mode using a global Function call. This could conceivably fail
  // if a Content Security Policy forbids using Function, but in that case
  // the proper solution is to fix the accidental strict mode problem. If
  // you've misconfigured your bundler to force strict mode and applied a
  // CSP to forbid Function, and you're not willing to fix either of those
  // problems, please detail your unique predicament in a GitHub issue.
  Function("r", "regeneratorRuntime = r")(runtime);
}
});

var _marked = /*#__PURE__*/runtime_1.mark(scanAtlasTexels);

var ATLAS_BG_COLOR = /*#__PURE__*/new THREE.Color('#000000');
var VERTEX_SHADER = "\n  attribute vec4 faceInfo;\n  attribute vec2 uv2;\n\n  varying vec4 vFaceInfo;\n  uniform vec2 uvOffset;\n\n  void main() {\n    vFaceInfo = faceInfo;\n\n    gl_Position = projectionMatrix * vec4(\n      uv2 + uvOffset, // UV2 is the actual position on map\n      0,\n      1.0\n    );\n  }\n";
var FRAGMENT_SHADER = "\n  varying vec4 vFaceInfo;\n\n  void main() {\n    // encode the face information in map\n    gl_FragColor = vFaceInfo;\n  }\n";

function getTexelInfo(atlasMap, texelIndex) {
  // get current atlas face we are filling up
  var texelInfoBase = texelIndex * 4;
  var texelPosU = atlasMap.data[texelInfoBase];
  var texelPosV = atlasMap.data[texelInfoBase + 1];
  var texelItemEnc = atlasMap.data[texelInfoBase + 2];
  var texelFaceEnc = atlasMap.data[texelInfoBase + 3]; // skip computation if this texel is empty

  if (texelItemEnc === 0) {
    return null;
  } // otherwise, proceed with computation and exit


  var texelItemIndex = Math.round(texelItemEnc - 1);
  var texelFaceIndex = Math.round(texelFaceEnc - 1);

  if (texelItemIndex < 0 || texelItemIndex >= atlasMap.items.length) {
    throw new Error("incorrect atlas map item data: " + texelPosU + ", " + texelPosV + ", " + texelItemEnc + ", " + texelFaceEnc);
  }

  var atlasItem = atlasMap.items[texelItemIndex];

  if (texelFaceIndex < 0 || texelFaceIndex >= atlasItem.faceCount) {
    throw new Error("incorrect atlas map face data: " + texelPosU + ", " + texelPosV + ", " + texelItemEnc + ", " + texelFaceEnc);
  } // report the viable texel to be baked
  // @todo reduce malloc?


  return {
    texelIndex: texelIndex,
    originalMesh: atlasItem.originalMesh,
    originalBuffer: atlasItem.originalBuffer,
    faceIndex: texelFaceIndex,
    pU: texelPosU,
    pV: texelPosV
  };
} // iterate through all texels


function scanAtlasTexels(atlasMap, onFinished) {
  var atlasWidth, atlasHeight, totalTexelCount, texelCount, retryCount, currentCounter, texelInfo;
  return runtime_1.wrap(function scanAtlasTexels$(_context) {
    while (1) {
      switch (_context.prev = _context.next) {
        case 0:
          atlasWidth = atlasMap.width, atlasHeight = atlasMap.height;
          totalTexelCount = atlasWidth * atlasHeight;
          texelCount = 0;
          retryCount = 0;

        case 4:
          if (!(texelCount < totalTexelCount)) {
            _context.next = 16;
            break;
          }

          // get current texel info and increment
          currentCounter = texelCount;
          texelCount += 1;
          texelInfo = getTexelInfo(atlasMap, currentCounter); // try to keep looking for a reasonable number of cycles
          // before yielding empty result

          if (!(!texelInfo && retryCount < 100)) {
            _context.next = 11;
            break;
          }

          retryCount += 1;
          return _context.abrupt("continue", 4);

        case 11:
          // yield out with either a found texel or nothing
          retryCount = 0;
          _context.next = 14;
          return texelInfo;

        case 14:
          _context.next = 4;
          break;

        case 16:
          onFinished();

        case 17:
        case "end":
          return _context.stop();
      }
    }
  }, _marked);
} // write out original face geometry info into the atlas map
// each texel corresponds to: (quadX, quadY, quadIndex)
// where quadX and quadY are 0..1 representing a spot in the original quad
// and quadIndex is 1-based to distinguish from blank space
// which allows to find original 3D position/normal/etc for that texel
// (quad index is int stored as float, but precision should be good enough)
// NOTE: each atlas texture sample corresponds to the position of
// the physical midpoint of the corresponding rendered texel
// (e.g. if lightmap was shown pixelated); this works well
// with either bilinear or nearest filtering
// @todo consider stencil buffer, or just 8bit texture

function getInputItems(sceneItems) {
  var items = [];

  for (var _iterator = _createForOfIteratorHelperLoose(sceneItems), _step; !(_step = _iterator()).done;) {
    var mesh = _step.value;

    if (!(mesh instanceof THREE.Mesh)) {
      continue;
    } // ignore anything that is not a buffer geometry
    // @todo warn on legacy geometry objects if they seem to have UV2?


    var buffer = mesh.geometry;

    if (!(buffer instanceof THREE.BufferGeometry)) {
      continue;
    } // if we see this object, it is not read-only and hence must have UV2


    var uv2Attr = buffer.attributes.uv2;

    if (!uv2Attr) {
      throw new Error('expecting UV2 coordinates on writable lightmapped mesh');
    } // gather other necessary attributes and ensure compatible data
    // @todo support non-indexed meshes
    // @todo support interleaved attributes


    var indexAttr = buffer.index;

    if (!indexAttr) {
      throw new Error('expected face index array');
    }

    var faceVertexCount = indexAttr.array.length;

    if (!(uv2Attr instanceof THREE.BufferAttribute)) {
      throw new Error('expected uv2 attribute');
    } // index of this item once it will be added to list


    var itemIndex = items.length;
    var atlasPosAttr = new THREE.Float32BufferAttribute(faceVertexCount * 3, 3);
    var atlasUV2Attr = new THREE.Float32BufferAttribute(faceVertexCount * 2, 2);
    var atlasFaceInfoAttr = new THREE.Float32BufferAttribute(faceVertexCount * 4, 4); // unroll indexed mesh data into non-indexed buffer so that we can encode per-face data
    // (otherwise vertices may be shared, and hence cannot have face-specific info in vertex attribute)

    var indexData = indexAttr.array;

    for (var faceVertexIndex = 0; faceVertexIndex < faceVertexCount; faceVertexIndex += 1) {
      var faceMod = faceVertexIndex % 3; // not bothering to copy vertex position data because we don't need it
      // (however, we cannot omit the 'position' attribute altogether)

      atlasUV2Attr.copyAt(faceVertexIndex, uv2Attr, indexData[faceVertexIndex]); // position of vertex in face: (0,0), (0,1) or (1,0)

      var facePosX = faceMod & 1;
      var facePosY = (faceMod & 2) >> 1; // mesh index + face index combined into one

      var faceIndex = (faceVertexIndex - faceMod) / 3;
      atlasFaceInfoAttr.setXYZW(faceVertexIndex, facePosX, facePosY, itemIndex + 1, // encode item index (1-based to indicate filled texels)
      faceIndex + 1 // encode face index (1-based to indicate filled texels)
      );
    } // this buffer is disposed of when atlas scene is unmounted


    var atlasBuffer = new THREE.BufferGeometry();
    atlasBuffer.setAttribute('position', atlasPosAttr);
    atlasBuffer.setAttribute('uv2', atlasUV2Attr);
    atlasBuffer.setAttribute('faceInfo', atlasFaceInfoAttr);
    items.push({
      faceCount: faceVertexCount / 3,
      perFaceBuffer: atlasBuffer,
      originalMesh: mesh,
      originalBuffer: buffer
    });
  }

  return items;
}

function createOrthoScene(inputItems) {
  var orthoScene = new THREE.Scene();
  orthoScene.name = 'Atlas mapper ortho scene';

  for (var _iterator2 = _createForOfIteratorHelperLoose(inputItems), _step2; !(_step2 = _iterator2()).done;) {
    var geom = _step2.value;
    var mesh = new THREE.Mesh();
    mesh.frustumCulled = false; // skip bounding box checks (not applicable and logic gets confused)

    mesh.geometry = geom.perFaceBuffer;
    mesh.material = new THREE.ShaderMaterial({
      side: THREE.DoubleSide,
      vertexShader: VERTEX_SHADER,
      fragmentShader: FRAGMENT_SHADER
    });
    orthoScene.add(mesh);
  }

  return orthoScene;
}

function renderAtlas(gl, width, height, sceneItems) {
  var inputItems = getInputItems(sceneItems);
  var orthoScene = createOrthoScene(inputItems); // set up simple rasterization for pure data consumption

  var orthoTarget = new THREE.WebGLRenderTarget(width, height, {
    type: THREE.FloatType,
    magFilter: THREE.NearestFilter,
    minFilter: THREE.NearestFilter,
    depthBuffer: false,
    generateMipmaps: false
  });
  var orthoCamera = new THREE.OrthographicCamera(0, 1, 1, 0, 0, 1);
  var orthoData = new Float32Array(width * height * 4); // save existing renderer state

  var prevClearColor = new THREE.Color();
  gl.getClearColor(prevClearColor);
  var prevClearAlpha = gl.getClearAlpha();
  var prevAutoClear = gl.autoClear; // produce the output

  gl.setRenderTarget(orthoTarget);
  gl.setClearColor(ATLAS_BG_COLOR, 0); // alpha must be zero

  gl.autoClear = true;
  gl.render(orthoScene, orthoCamera); // restore previous renderer state

  gl.setRenderTarget(null);
  gl.setClearColor(prevClearColor, prevClearAlpha);
  gl.autoClear = prevAutoClear;
  gl.readRenderTargetPixels(orthoTarget, 0, 0, width, height, orthoData); // clean up

  orthoTarget.dispose();
  return {
    width: width,
    height: height,
    texture: new THREE.DataTexture(orthoData, width, height, THREE.RGBAFormat, THREE.FloatType),
    data: orthoData,
    // no need to expose references to atlas-specific geometry clones
    items: inputItems.map(function (_ref) {
      var faceCount = _ref.faceCount,
          originalMesh = _ref.originalMesh,
          originalBuffer = _ref.originalBuffer;
      return {
        faceCount: faceCount,
        originalMesh: originalMesh,
        originalBuffer: originalBuffer
      };
    })
  };
}

var tmpOrigin = /*#__PURE__*/new THREE.Vector3();
var tmpU = /*#__PURE__*/new THREE.Vector3();
var tmpV = /*#__PURE__*/new THREE.Vector3();
var tmpNormal = /*#__PURE__*/new THREE.Vector3();
var tmpLookAt = /*#__PURE__*/new THREE.Vector3();
var tmpProbeBox = /*#__PURE__*/new THREE.Vector4();
var tmpPrevClearColor = /*#__PURE__*/new THREE.Color(); // used inside blending function

var tmpNormalOther = /*#__PURE__*/new THREE.Vector3();
var PROBE_BG_ZERO = /*#__PURE__*/new THREE.Color('#000000');
var PROBE_BG_FULL = /*#__PURE__*/new THREE.Color('#ffffff');
var PROBE_BATCH_COUNT = 8;
var DEFAULT_LIGHT_PROBE_SETTINGS = {
  targetSize: 16,
  offset: 0,
  near: 0.05,
  far: 50
}; // bilinear interpolation of normals in triangle, with normalization

function setBlendedNormal(out, origNormalArray, origIndexArray, faceVertexBase, pU, pV) {
  // barycentric coordinate for origin point
  var pO = 1 - pU - pV;
  out.fromArray(origNormalArray, origIndexArray[faceVertexBase] * 3);
  out.multiplyScalar(pO);
  tmpNormalOther.fromArray(origNormalArray, origIndexArray[faceVertexBase + 1] * 3);
  out.addScaledVector(tmpNormalOther, pU);
  tmpNormalOther.fromArray(origNormalArray, origIndexArray[faceVertexBase + 2] * 3);
  out.addScaledVector(tmpNormalOther, pV);
  out.normalize();
}

function setUpProbeUp(probeCam, mesh, origin, normal, uDir) {
  probeCam.position.copy(origin);
  probeCam.up.copy(uDir); // add normal to accumulator and look at it

  tmpLookAt.copy(normal);
  tmpLookAt.add(origin);
  probeCam.lookAt(tmpLookAt);
  probeCam.scale.set(1, 1, 1); // then, transform camera into world space

  probeCam.applyMatrix4(mesh.matrixWorld);
}

function setUpProbeSide(probeCam, mesh, origin, normal, direction, directionSign) {
  probeCam.position.copy(origin); // up is the normal

  probeCam.up.copy(normal); // add normal to accumulator and look at it

  tmpLookAt.copy(origin);
  tmpLookAt.addScaledVector(direction, directionSign);
  probeCam.lookAt(tmpLookAt);
  probeCam.scale.set(1, 1, 1); // then, transform camera into world space

  probeCam.applyMatrix4(mesh.matrixWorld);
} // for each pixel in the individual probe viewport, compute contribution to final tally
// (edges are weaker because each pixel covers less of a view angle)
// @todo perform weighted pixel averaging/etc all in this file


function generatePixelAreaLookup(probeTargetSize) {
  var probePixelCount = probeTargetSize * probeTargetSize;
  var lookup = new Array(probePixelCount);
  var probePixelBias = 0.5 / probeTargetSize;

  for (var py = 0; py < probeTargetSize; py += 1) {
    // compute offset from center (with a bias for target pixel size)
    var dy = py / probeTargetSize - 0.5 + probePixelBias;

    for (var px = 0; px < probeTargetSize; px += 1) {
      // compute offset from center (with a bias for target pixel size)
      var dx = px / probeTargetSize - 0.5 + probePixelBias; // compute multiplier as affected by inclination of corresponding ray

      var span = Math.hypot(dx * 2, dy * 2);
      var hypo = Math.hypot(span, 1);
      var area = 1 / hypo;
      lookup[py * probeTargetSize + px] = area;
    }
  }

  return lookup;
} // collect and combine pixel aggregate from rendered probe viewports
// (this ignores the alpha channel from viewports)

var tmpTexelRGBA = /*#__PURE__*/new THREE.Vector4();

function readTexel(readLightProbe, probePixelAreaLookup) {
  var r = 0,
      g = 0,
      b = 0,
      totalDivider = 0;

  for (var _iterator = _createForOfIteratorHelperLoose(readLightProbe()), _step; !(_step = _iterator()).done;) {
    var _step$value = _step.value,
        probeData = _step$value.rgbaData,
        rowPixelStride = _step$value.rowPixelStride,
        box = _step$value.probeBox,
        originX = _step$value.originX,
        originY = _step$value.originY;
    var probeTargetSize = box.z; // assuming width is always full

    var rowStride = rowPixelStride * 4;
    var rowStart = box.y * rowStride + box.x * 4;
    var totalMax = (box.y + box.w) * rowStride;
    var py = originY;

    while (rowStart < totalMax) {
      var rowMax = rowStart + box.z * 4;
      var px = originX;

      for (var i = rowStart; i < rowMax; i += 4) {
        // compute multiplier as affected by inclination of corresponding ray
        var area = probePixelAreaLookup[py * probeTargetSize + px];
        r += area * probeData[i];
        g += area * probeData[i + 1];
        b += area * probeData[i + 2];
        totalDivider += area;
        px += 1;
      }

      rowStart += rowStride;
      py += 1;
    }
  } // alpha is set later


  tmpTexelRGBA.x = r / totalDivider;
  tmpTexelRGBA.y = g / totalDivider;
  tmpTexelRGBA.z = b / totalDivider;
} // @todo use light sphere for AO (double-check that far-extent is radius + epsilon)


function withLightProbe(_x, _x2, _x3, _x4) {
  return _withLightProbe.apply(this, arguments);
}

function _withLightProbe() {
  _withLightProbe = _asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee(aoMode, aoDistance, settings, taskCallback) {
    var probeTargetSize, probeBgColor, halfSize, targetWidth, targetHeight, probePixelAreaLookup, probeTarget, rtFov, rtAspect, rtNear, rtFar, probeCam, probeData, batchTexels, renderLightProbeBatch;
    return runtime_1.wrap(function _callee$(_context4) {
      while (1) {
        switch (_context4.prev = _context4.next) {
          case 0:
            probeTargetSize = settings.targetSize;
            probeBgColor = aoMode ? PROBE_BG_FULL : PROBE_BG_ZERO;
            halfSize = probeTargetSize / 2;
            targetWidth = probeTargetSize * 4; // 4 tiles across

            targetHeight = probeTargetSize * 2 * PROBE_BATCH_COUNT; // 2 tiles x batch count
            // @todo make this async?

            probePixelAreaLookup = generatePixelAreaLookup(probeTargetSize); // set up simple rasterization for pure data consumption

            probeTarget = new THREE.WebGLRenderTarget(targetWidth, targetHeight, {
              type: THREE.FloatType,
              magFilter: THREE.NearestFilter,
              minFilter: THREE.NearestFilter,
              generateMipmaps: false
            });
            rtFov = 90; // view cone must be quarter of the hemisphere

            rtAspect = 1; // square render target

            rtNear = settings.near;
            rtFar = aoMode ? aoDistance : settings.far; // in AO mode, lock far-extent to requested distance

            probeCam = new THREE.PerspectiveCamera(rtFov, rtAspect, rtNear, rtFar);
            probeData = new Float32Array(targetWidth * targetHeight * 4);
            batchTexels = new Array(PROBE_BATCH_COUNT); // @todo ensure there is biasing to be in middle of texel physical square

            renderLightProbeBatch = /*#__PURE__*/runtime_1.mark(function renderLightProbeBatch(gl, lightScene, texelIterator) {
              var prevClearAlpha, prevAutoClear, prevToneMapping, batchItem, texelResult, _texelResult$value, texelIndex, originalMesh, originalBuffer, faceIndex, pU, pV, batchOffsetY, origIndexArray, origPosArray, origNormalArray, faceVertexBase, _loop, _batchItem, _ret;

              return runtime_1.wrap(function renderLightProbeBatch$(_context3) {
                while (1) {
                  switch (_context3.prev = _context3.next) {
                    case 0:
                      // save existing renderer state
                      gl.getClearColor(tmpPrevClearColor);
                      prevClearAlpha = gl.getClearAlpha();
                      prevAutoClear = gl.autoClear;
                      prevToneMapping = gl.toneMapping; // reset tone mapping output to linear because we are aggregating unprocessed luminance output

                      gl.toneMapping = THREE.LinearToneMapping; // set up render target for overall clearing
                      // (bypassing setViewport means that the renderer conveniently preserves previous state)

                      probeTarget.scissorTest = true;
                      probeTarget.scissor.set(0, 0, targetWidth, targetHeight);
                      probeTarget.viewport.set(0, 0, targetWidth, targetHeight);
                      gl.setRenderTarget(probeTarget);
                      gl.autoClear = false; // clear entire area

                      gl.setClearColor(probeBgColor, 1);
                      gl.clear(true, true, false);
                      batchItem = 0;

                    case 13:
                      if (!(batchItem < PROBE_BATCH_COUNT)) {
                        _context3.next = 71;
                        break;
                      }

                      texelResult = texelIterator.next();

                      if (!(!texelResult.done && texelResult.value)) {
                        _context3.next = 66;
                        break;
                      }

                      _texelResult$value = texelResult.value, texelIndex = _texelResult$value.texelIndex, originalMesh = _texelResult$value.originalMesh, originalBuffer = _texelResult$value.originalBuffer, faceIndex = _texelResult$value.faceIndex, pU = _texelResult$value.pU, pV = _texelResult$value.pV; // each batch is 2 tiles high

                      batchOffsetY = batchItem * probeTargetSize * 2; // save which texel is being rendered for later reporting

                      batchTexels[batchItem] = texelIndex;

                      if (originalBuffer.index) {
                        _context3.next = 21;
                        break;
                      }

                      throw new Error('expected indexed mesh');

                    case 21:
                      // read vertex position for this face and interpolate along U and V axes
                      origIndexArray = originalBuffer.index.array;
                      origPosArray = originalBuffer.attributes.position.array;
                      origNormalArray = originalBuffer.attributes.normal.array; // get face vertex positions

                      faceVertexBase = faceIndex * 3;
                      tmpOrigin.fromArray(origPosArray, origIndexArray[faceVertexBase] * 3);
                      tmpU.fromArray(origPosArray, origIndexArray[faceVertexBase + 1] * 3);
                      tmpV.fromArray(origPosArray, origIndexArray[faceVertexBase + 2] * 3); // compute face dimensions

                      tmpU.sub(tmpOrigin);
                      tmpV.sub(tmpOrigin); // set camera to match texel, first in mesh-local space

                      tmpOrigin.addScaledVector(tmpU, pU);
                      tmpOrigin.addScaledVector(tmpV, pV); // compute normal and cardinal directions
                      // (done per texel for linear interpolation of normals)

                      setBlendedNormal(tmpNormal, origNormalArray, origIndexArray, faceVertexBase, pU, pV); // use consistent "left" and "up" directions based on just the normal

                      if (tmpNormal.x === 0 && tmpNormal.y === 0) {
                        tmpU.set(1, 0, 0);
                      } else {
                        tmpU.set(0, 0, 1);
                      }

                      tmpV.crossVectors(tmpNormal, tmpU);
                      tmpV.normalize();
                      tmpU.crossVectors(tmpNormal, tmpV);
                      tmpU.normalize(); // nudge the light probe position based on requested offset

                      tmpOrigin.addScaledVector(tmpNormal, settings.offset); // proceed with the renders

                      setUpProbeUp(probeCam, originalMesh, tmpOrigin, tmpNormal, tmpU);
                      probeTarget.viewport.set(0, batchOffsetY + probeTargetSize, probeTargetSize, probeTargetSize);
                      probeTarget.scissor.set(0, batchOffsetY + probeTargetSize, probeTargetSize, probeTargetSize);
                      gl.setRenderTarget(probeTarget); // propagate latest target params

                      gl.render(lightScene, probeCam); // sides only need the upper half of rendered view, so we set scissor accordingly

                      setUpProbeSide(probeCam, originalMesh, tmpOrigin, tmpNormal, tmpU, 1);
                      probeTarget.viewport.set(0, batchOffsetY, probeTargetSize, probeTargetSize);
                      probeTarget.scissor.set(0, batchOffsetY + halfSize, probeTargetSize, halfSize);
                      gl.setRenderTarget(probeTarget); // propagate latest target params

                      gl.render(lightScene, probeCam);
                      setUpProbeSide(probeCam, originalMesh, tmpOrigin, tmpNormal, tmpU, -1);
                      probeTarget.viewport.set(probeTargetSize, batchOffsetY, probeTargetSize, probeTargetSiz