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node_modules/cesium/Build/CesiumUnminified/Workers/createCoplanarPolygonOutlineGeometry.js

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+/**
+ * @license
+ * Cesium - https://github.com/CesiumGS/cesium
+ * Version 1.144.0
+ *
+ * Copyright 2011-2022 Cesium Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Columbus View (Pat. Pend.)
+ *
+ * Portions licensed separately.
+ * See https://github.com/CesiumGS/cesium/blob/main/LICENSE.md for full licensing details.
+ */
+
+import {
+  CoplanarPolygonGeometryLibrary_default
+} from "./chunk-JXYLJCTC.js";
+import "./chunk-NXGQBQWE.js";
+import {
+  PolygonGeometryLibrary_default
+} from "./chunk-U5LV3F3Z.js";
+import "./chunk-NCL22ZUX.js";
+import {
+  GeometryInstance_default
+} from "./chunk-PD4GK4EM.js";
+import {
+  GeometryPipeline_default
+} from "./chunk-TQ4QCOXT.js";
+import "./chunk-TNWKJNUZ.js";
+import "./chunk-3PSS3T43.js";
+import "./chunk-PVTSNNVI.js";
+import "./chunk-7XM5JK5F.js";
+import "./chunk-BSPCI2LO.js";
+import {
+  arrayRemoveDuplicates_default
+} from "./chunk-SMTGMFBL.js";
+import "./chunk-6FZDPMTO.js";
+import "./chunk-GHXVQVUM.js";
+import "./chunk-R4K7EHOU.js";
+import {
+  IndexDatatype_default
+} from "./chunk-6FHT43QR.js";
+import {
+  GeometryAttributes_default
+} from "./chunk-IUIFLOYO.js";
+import {
+  GeometryAttribute_default,
+  Geometry_default,
+  PrimitiveType_default
+} from "./chunk-QIZDWZK6.js";
+import {
+  BoundingSphere_default
+} from "./chunk-2H5264K7.js";
+import "./chunk-CQNFIAZU.js";
+import "./chunk-CRCGE4J4.js";
+import "./chunk-ERKUET22.js";
+import {
+  ComponentDatatype_default
+} from "./chunk-DSGLDRTI.js";
+import "./chunk-YGFVAGYF.js";
+import "./chunk-FQ42MT7M.js";
+import {
+  Ellipsoid_default
+} from "./chunk-UAZUP4I5.js";
+import {
+  Cartesian3_default,
+  Frozen_default
+} from "./chunk-SA2A2AN5.js";
+import "./chunk-ACTVJHSP.js";
+import {
+  Check_default
+} from "./chunk-XLQZNQ4Z.js";
+import {
+  defined_default
+} from "./chunk-PCL3Y7H5.js";
+
+// packages/engine/Source/Core/CoplanarPolygonOutlineGeometry.js
+function createGeometryFromPositions(positions) {
+  const length = positions.length;
+  const flatPositions = new Float64Array(length * 3);
+  const indices = IndexDatatype_default.createTypedArray(length, length * 2);
+  let positionIndex = 0;
+  let index = 0;
+  for (let i = 0; i < length; i++) {
+    const position = positions[i];
+    flatPositions[positionIndex++] = position.x;
+    flatPositions[positionIndex++] = position.y;
+    flatPositions[positionIndex++] = position.z;
+    indices[index++] = i;
+    indices[index++] = (i + 1) % length;
+  }
+  const attributes = new GeometryAttributes_default({
+    position: new GeometryAttribute_default({
+      componentDatatype: ComponentDatatype_default.DOUBLE,
+      componentsPerAttribute: 3,
+      values: flatPositions
+    })
+  });
+  return new Geometry_default({
+    attributes,
+    indices,
+    primitiveType: PrimitiveType_default.LINES
+  });
+}
+function CoplanarPolygonOutlineGeometry(options) {
+  options = options ?? Frozen_default.EMPTY_OBJECT;
+  const polygonHierarchy = options.polygonHierarchy;
+  Check_default.defined("options.polygonHierarchy", polygonHierarchy);
+  this._polygonHierarchy = polygonHierarchy;
+  this._workerName = "createCoplanarPolygonOutlineGeometry";
+  this.packedLength = PolygonGeometryLibrary_default.computeHierarchyPackedLength(
+    polygonHierarchy,
+    Cartesian3_default
+  ) + 1;
+}
+CoplanarPolygonOutlineGeometry.fromPositions = function(options) {
+  options = options ?? Frozen_default.EMPTY_OBJECT;
+  Check_default.defined("options.positions", options.positions);
+  const newOptions = {
+    polygonHierarchy: {
+      positions: options.positions
+    }
+  };
+  return new CoplanarPolygonOutlineGeometry(newOptions);
+};
+CoplanarPolygonOutlineGeometry.pack = function(value, array, startingIndex) {
+  Check_default.typeOf.object("value", value);
+  Check_default.defined("array", array);
+  startingIndex = startingIndex ?? 0;
+  startingIndex = PolygonGeometryLibrary_default.packPolygonHierarchy(
+    value._polygonHierarchy,
+    array,
+    startingIndex,
+    Cartesian3_default
+  );
+  array[startingIndex] = value.packedLength;
+  return array;
+};
+var scratchOptions = {
+  polygonHierarchy: {}
+};
+CoplanarPolygonOutlineGeometry.unpack = function(array, startingIndex, result) {
+  Check_default.defined("array", array);
+  startingIndex = startingIndex ?? 0;
+  const polygonHierarchy = PolygonGeometryLibrary_default.unpackPolygonHierarchy(
+    array,
+    startingIndex,
+    Cartesian3_default
+  );
+  startingIndex = polygonHierarchy.startingIndex;
+  delete polygonHierarchy.startingIndex;
+  const packedLength = array[startingIndex];
+  if (!defined_default(result)) {
+    result = new CoplanarPolygonOutlineGeometry(scratchOptions);
+  }
+  result._polygonHierarchy = polygonHierarchy;
+  result.packedLength = packedLength;
+  return result;
+};
+CoplanarPolygonOutlineGeometry.createGeometry = function(polygonGeometry) {
+  const polygonHierarchy = polygonGeometry._polygonHierarchy;
+  let outerPositions = polygonHierarchy.positions;
+  outerPositions = arrayRemoveDuplicates_default(
+    outerPositions,
+    Cartesian3_default.equalsEpsilon,
+    true
+  );
+  if (outerPositions.length < 3) {
+    return;
+  }
+  const isValid = CoplanarPolygonGeometryLibrary_default.validOutline(outerPositions);
+  if (!isValid) {
+    return void 0;
+  }
+  const polygons = PolygonGeometryLibrary_default.polygonOutlinesFromHierarchy(
+    polygonHierarchy,
+    false
+  );
+  if (polygons.length === 0) {
+    return void 0;
+  }
+  const geometries = [];
+  for (let i = 0; i < polygons.length; i++) {
+    const geometryInstance = new GeometryInstance_default({
+      geometry: createGeometryFromPositions(polygons[i])
+    });
+    geometries.push(geometryInstance);
+  }
+  const geometry = GeometryPipeline_default.combineInstances(geometries)[0];
+  const boundingSphere = BoundingSphere_default.fromPoints(polygonHierarchy.positions);
+  return new Geometry_default({
+    attributes: geometry.attributes,
+    indices: geometry.indices,
+    primitiveType: geometry.primitiveType,
+    boundingSphere
+  });
+};
+var CoplanarPolygonOutlineGeometry_default = CoplanarPolygonOutlineGeometry;
+
+// packages/engine/Source/Workers/createCoplanarPolygonOutlineGeometry.js
+function createCoplanarPolygonOutlineGeometry(polygonGeometry, offset) {
+  if (defined_default(offset)) {
+    polygonGeometry = CoplanarPolygonOutlineGeometry_default.unpack(
+      polygonGeometry,
+      offset
+    );
+  }
+  polygonGeometry._ellipsoid = Ellipsoid_default.clone(polygonGeometry._ellipsoid);
+  return CoplanarPolygonOutlineGeometry_default.createGeometry(polygonGeometry);
+}
+var createCoplanarPolygonOutlineGeometry_default = createCoplanarPolygonOutlineGeometry;
+export {
+  createCoplanarPolygonOutlineGeometry_default as default
+};