From d74b495736f0c04522ec54274b70fed0ded2878d Mon Sep 17 00:00:00 2001
From: zhongrj <646384940@qq.com>
Date: Tue, 27 Jun 2023 11:30:06 +0800
Subject: [PATCH] 任务新增导出
---
public/libs/Cesium/Workers/createCoplanarPolygonGeometry.js | 435 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 435 insertions(+), 0 deletions(-)
diff --git a/public/libs/Cesium/Workers/createCoplanarPolygonGeometry.js b/public/libs/Cesium/Workers/createCoplanarPolygonGeometry.js
new file mode 100644
index 0000000..970e1fe
--- /dev/null
+++ b/public/libs/Cesium/Workers/createCoplanarPolygonGeometry.js
@@ -0,0 +1,435 @@
+/**
+ * Cesium - https://github.com/CesiumGS/cesium
+ *
+ * Copyright 2011-2020 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/master/LICENSE.md for full licensing details.
+ */
+define(['./when-8d13db60', './Check-70bec281', './Math-61ede240', './Cartographic-fe4be337', './Cartesian2-85064f09', './BoundingSphere-775c5788', './Cartesian4-5af5bb24', './RuntimeError-ba10bc3e', './WebGLConstants-4c11ee5f', './ComponentDatatype-5862616f', './GeometryAttribute-ed9d707f', './PrimitiveType-97893bc7', './FeatureDetection-7bd32c34', './Transforms-a1cf7267', './buildModuleUrl-e7952659', './GeometryAttributes-aacecde6', './AttributeCompression-84a90a13', './GeometryPipeline-245a05d7', './EncodedCartesian3-a569cba8', './IndexDatatype-9435b55f', './IntersectionTests-397d9494', './Plane-8390418f', './VertexFormat-fe4db402', './GeometryInstance-93a01b5d', './arrayRemoveDuplicates-f0b089b1', './BoundingRectangle-dc808c42', './EllipsoidTangentPlane-e324bfa4', './OrientedBoundingBox-0ede1598', './CoplanarPolygonGeometryLibrary-81d1880f', './ArcType-66bc286a', './EllipsoidRhumbLine-f161e674', './earcut-2.2.1-b404d9e6', './PolygonPipeline-fd46002b', './PolygonGeometryLibrary-9cc18cc2'], function (when, Check, _Math, Cartographic, Cartesian2, BoundingSphere, Cartesian4, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, PrimitiveType, FeatureDetection, Transforms, buildModuleUrl, GeometryAttributes, AttributeCompression, GeometryPipeline, EncodedCartesian3, IndexDatatype, IntersectionTests, Plane, VertexFormat, GeometryInstance, arrayRemoveDuplicates, BoundingRectangle, EllipsoidTangentPlane, OrientedBoundingBox, CoplanarPolygonGeometryLibrary, ArcType, EllipsoidRhumbLine, earcut2_2_1, PolygonPipeline, PolygonGeometryLibrary) { 'use strict';
+
+ var scratchPosition = new Cartographic.Cartesian3();
+ var scratchBR = new BoundingRectangle.BoundingRectangle();
+ var stScratch = new Cartesian2.Cartesian2();
+ var textureCoordinatesOrigin = new Cartesian2.Cartesian2();
+ var scratchNormal = new Cartographic.Cartesian3();
+ var scratchTangent = new Cartographic.Cartesian3();
+ var scratchBitangent = new Cartographic.Cartesian3();
+ var centerScratch = new Cartographic.Cartesian3();
+ var axis1Scratch = new Cartographic.Cartesian3();
+ var axis2Scratch = new Cartographic.Cartesian3();
+ var quaternionScratch = new Transforms.Quaternion();
+ var textureMatrixScratch = new BoundingSphere.Matrix3();
+ var tangentRotationScratch = new BoundingSphere.Matrix3();
+ var surfaceNormalScratch = new Cartographic.Cartesian3();
+
+ function createGeometryFromPolygon(polygon, vertexFormat, boundingRectangle, stRotation, projectPointTo2D, normal, tangent, bitangent) {
+ var positions = polygon.positions;
+ var indices = PolygonPipeline.PolygonPipeline.triangulate(polygon.positions2D, polygon.holes);
+
+ /* If polygon is completely unrenderable, just use the first three vertices */
+ if (indices.length < 3) {
+ indices = [0, 1, 2];
+ }
+
+ var newIndices = IndexDatatype.IndexDatatype.createTypedArray(positions.length, indices.length);
+ newIndices.set(indices);
+
+ var textureMatrix = textureMatrixScratch;
+ if (stRotation !== 0.0) {
+ var rotation = Transforms.Quaternion.fromAxisAngle(normal, stRotation, quaternionScratch);
+ textureMatrix = BoundingSphere.Matrix3.fromQuaternion(rotation, textureMatrix);
+
+ if (vertexFormat.tangent || vertexFormat.bitangent) {
+ rotation = Transforms.Quaternion.fromAxisAngle(normal, -stRotation, quaternionScratch);
+ var tangentRotation = BoundingSphere.Matrix3.fromQuaternion(rotation, tangentRotationScratch);
+
+ tangent = Cartographic.Cartesian3.normalize(BoundingSphere.Matrix3.multiplyByVector(tangentRotation, tangent, tangent), tangent);
+ if (vertexFormat.bitangent) {
+ bitangent = Cartographic.Cartesian3.normalize(Cartographic.Cartesian3.cross(normal, tangent, bitangent), bitangent);
+ }
+ }
+ } else {
+ textureMatrix = BoundingSphere.Matrix3.clone(BoundingSphere.Matrix3.IDENTITY, textureMatrix);
+ }
+
+ var stOrigin = textureCoordinatesOrigin;
+ if (vertexFormat.st) {
+ stOrigin.x = boundingRectangle.x;
+ stOrigin.y = boundingRectangle.y;
+ }
+
+ var length = positions.length;
+ var size = length * 3;
+ var flatPositions = new Float64Array(size);
+ var normals = vertexFormat.normal ? new Float32Array(size) : undefined;
+ var tangents = vertexFormat.tangent ? new Float32Array(size) : undefined;
+ var bitangents = vertexFormat.bitangent ? new Float32Array(size) : undefined;
+ var textureCoordinates = vertexFormat.st ? new Float32Array(length * 2) : undefined;
+
+ var positionIndex = 0;
+ var normalIndex = 0;
+ var bitangentIndex = 0;
+ var tangentIndex = 0;
+ var stIndex = 0;
+
+ for (var i = 0; i < length; i++) {
+ var position = positions[i];
+ flatPositions[positionIndex++] = position.x;
+ flatPositions[positionIndex++] = position.y;
+ flatPositions[positionIndex++] = position.z;
+
+ if (vertexFormat.st) {
+ var p = BoundingSphere.Matrix3.multiplyByVector(textureMatrix, position, scratchPosition);
+ var st = projectPointTo2D(p, stScratch);
+ Cartesian2.Cartesian2.subtract(st, stOrigin, st);
+
+ var stx = _Math.CesiumMath.clamp(st.x / boundingRectangle.width, 0, 1);
+ var sty = _Math.CesiumMath.clamp(st.y / boundingRectangle.height, 0, 1);
+ textureCoordinates[stIndex++] = stx;
+ textureCoordinates[stIndex++] = sty;
+ }
+
+ if (vertexFormat.normal) {
+ normals[normalIndex++] = normal.x;
+ normals[normalIndex++] = normal.y;
+ normals[normalIndex++] = normal.z;
+ }
+
+ if (vertexFormat.tangent) {
+ tangents[tangentIndex++] = tangent.x;
+ tangents[tangentIndex++] = tangent.y;
+ tangents[tangentIndex++] = tangent.z;
+ }
+
+ if (vertexFormat.bitangent) {
+ bitangents[bitangentIndex++] = bitangent.x;
+ bitangents[bitangentIndex++] = bitangent.y;
+ bitangents[bitangentIndex++] = bitangent.z;
+ }
+ }
+
+ var attributes = new GeometryAttributes.GeometryAttributes();
+
+ if (vertexFormat.position) {
+ attributes.position = new GeometryAttribute.GeometryAttribute({
+ componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE,
+ componentsPerAttribute : 3,
+ values : flatPositions
+ });
+ }
+
+ if (vertexFormat.normal) {
+ attributes.normal = new GeometryAttribute.GeometryAttribute({
+ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
+ componentsPerAttribute : 3,
+ values : normals
+ });
+ }
+
+ if (vertexFormat.tangent) {
+ attributes.tangent = new GeometryAttribute.GeometryAttribute({
+ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
+ componentsPerAttribute : 3,
+ values : tangents
+ });
+ }
+
+ if (vertexFormat.bitangent) {
+ attributes.bitangent = new GeometryAttribute.GeometryAttribute({
+ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
+ componentsPerAttribute : 3,
+ values : bitangents
+ });
+ }
+
+ if (vertexFormat.st) {
+ attributes.st = new GeometryAttribute.GeometryAttribute({
+ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
+ componentsPerAttribute : 2,
+ values : textureCoordinates
+ });
+ }
+
+ return new GeometryAttribute.Geometry({
+ attributes : attributes,
+ indices : newIndices,
+ primitiveType : PrimitiveType.PrimitiveType.TRIANGLES
+ });
+ }
+
+ /**
+ * A description of a polygon composed of arbitrary coplanar positions.
+ *
+ * @alias CoplanarPolygonGeometry
+ * @constructor
+ *
+ * @param {Object} options Object with the following properties:
+ * @param {PolygonHierarchy} options.polygonHierarchy A polygon hierarchy that can include holes.
+ * @param {Number} [options.stRotation=0.0] The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
+ * @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
+ * @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
+ *
+ * @example
+ * var polygon = new Cesium.CoplanarPolygonGeometry({
+ * positions : Cesium.Cartesian3.fromDegreesArrayHeights([
+ * -90.0, 30.0, 0.0,
+ * -90.0, 30.0, 1000.0,
+ * -80.0, 30.0, 1000.0,
+ * -80.0, 30.0, 0.0
+ * ])
+ * });
+ * var geometry = Cesium.CoplanarPolygonGeometry.createGeometry(polygon);
+ *
+ * @see CoplanarPolygonGeometry.createGeometry
+ */
+ function CoplanarPolygonGeometry(options) {
+ options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
+ var polygonHierarchy = options.polygonHierarchy;
+ //>>includeStart('debug', pragmas.debug);
+ Check.Check.defined('options.polygonHierarchy', polygonHierarchy);
+ //>>includeEnd('debug');
+
+ var vertexFormat = when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT);
+ this._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat);
+ this._polygonHierarchy = polygonHierarchy;
+ this._stRotation = when.defaultValue(options.stRotation, 0.0);
+ this._ellipsoid = Cartesian2.Ellipsoid.clone(when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84));
+ this._workerName = 'createCoplanarPolygonGeometry';
+
+ /**
+ * The number of elements used to pack the object into an array.
+ * @type {Number}
+ */
+ this.packedLength = PolygonGeometryLibrary.PolygonGeometryLibrary.computeHierarchyPackedLength(polygonHierarchy) + VertexFormat.VertexFormat.packedLength + Cartesian2.Ellipsoid.packedLength + 2;
+ }
+
+ /**
+ * A description of a coplanar polygon from an array of positions.
+ *
+ * @param {Object} options Object with the following properties:
+ * @param {Cartesian3[]} options.positions An array of positions that defined the corner points of the polygon.
+ * @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
+ * @param {Number} [options.stRotation=0.0] The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
+ * @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
+ * @returns {CoplanarPolygonGeometry}
+ *
+ * @example
+ * // create a polygon from points
+ * var polygon = Cesium.CoplanarPolygonGeometry.fromPositions({
+ * positions : Cesium.Cartesian3.fromDegreesArray([
+ * -72.0, 40.0,
+ * -70.0, 35.0,
+ * -75.0, 30.0,
+ * -70.0, 30.0,
+ * -68.0, 40.0
+ * ])
+ * });
+ * var geometry = Cesium.PolygonGeometry.createGeometry(polygon);
+ *
+ * @see PolygonGeometry#createGeometry
+ */
+ CoplanarPolygonGeometry.fromPositions = function(options) {
+ options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
+
+ //>>includeStart('debug', pragmas.debug);
+ Check.Check.defined('options.positions', options.positions);
+ //>>includeEnd('debug');
+
+ var newOptions = {
+ polygonHierarchy : {
+ positions : options.positions
+ },
+ vertexFormat : options.vertexFormat,
+ stRotation : options.stRotation,
+ ellipsoid : options.ellipsoid
+ };
+ return new CoplanarPolygonGeometry(newOptions);
+ };
+
+ /**
+ * Stores the provided instance into the provided array.
+ *
+ * @param {CoplanarPolygonGeometry} value The value to pack.
+ * @param {Number[]} array The array to pack into.
+ * @param {Number} [startingIndex=0] The index into the array at which to start packing the elements.
+ *
+ * @returns {Number[]} The array that was packed into
+ */
+ CoplanarPolygonGeometry.pack = function(value, array, startingIndex) {
+ //>>includeStart('debug', pragmas.debug);
+ Check.Check.typeOf.object('value', value);
+ Check.Check.defined('array', array);
+ //>>includeEnd('debug');
+
+ startingIndex = when.defaultValue(startingIndex, 0);
+
+ startingIndex = PolygonGeometryLibrary.PolygonGeometryLibrary.packPolygonHierarchy(value._polygonHierarchy, array, startingIndex);
+
+ Cartesian2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
+ startingIndex += Cartesian2.Ellipsoid.packedLength;
+
+ VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex);
+ startingIndex += VertexFormat.VertexFormat.packedLength;
+
+ array[startingIndex++] = value._stRotation;
+ array[startingIndex] = value.packedLength;
+
+ return array;
+ };
+
+ var scratchEllipsoid = Cartesian2.Ellipsoid.clone(Cartesian2.Ellipsoid.UNIT_SPHERE);
+ var scratchVertexFormat = new VertexFormat.VertexFormat();
+ var scratchOptions = {
+ polygonHierarchy : {}
+ };
+ /**
+ * Retrieves an instance from a packed array.
+ *
+ * @param {Number[]} array The packed array.
+ * @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
+ * @param {CoplanarPolygonGeometry} [result] The object into which to store the result.
+ * @returns {CoplanarPolygonGeometry} The modified result parameter or a new CoplanarPolygonGeometry instance if one was not provided.
+ */
+ CoplanarPolygonGeometry.unpack = function(array, startingIndex, result) {
+ //>>includeStart('debug', pragmas.debug);
+ Check.Check.defined('array', array);
+ //>>includeEnd('debug');
+
+ startingIndex = when.defaultValue(startingIndex, 0);
+
+ var polygonHierarchy = PolygonGeometryLibrary.PolygonGeometryLibrary.unpackPolygonHierarchy(array, startingIndex);
+ startingIndex = polygonHierarchy.startingIndex;
+ delete polygonHierarchy.startingIndex;
+
+ var ellipsoid = Cartesian2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
+ startingIndex += Cartesian2.Ellipsoid.packedLength;
+
+ var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
+ startingIndex += VertexFormat.VertexFormat.packedLength;
+
+ var stRotation = array[startingIndex++];
+ var packedLength = array[startingIndex];
+
+ if (!when.defined(result)) {
+ result = new CoplanarPolygonGeometry(scratchOptions);
+ }
+
+ result._polygonHierarchy = polygonHierarchy;
+ result._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
+ result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
+ result._stRotation = stRotation;
+ result.packedLength = packedLength;
+ return result;
+ };
+
+ /**
+ * Computes the geometric representation of an arbitrary coplanar polygon, including its vertices, indices, and a bounding sphere.
+ *
+ * @param {CoplanarPolygonGeometry} polygonGeometry A description of the polygon.
+ * @returns {Geometry|undefined} The computed vertices and indices.
+ */
+ CoplanarPolygonGeometry.createGeometry = function(polygonGeometry) {
+ var vertexFormat = polygonGeometry._vertexFormat;
+ var polygonHierarchy = polygonGeometry._polygonHierarchy;
+ var stRotation = polygonGeometry._stRotation;
+
+ var outerPositions = polygonHierarchy.positions;
+ outerPositions = arrayRemoveDuplicates.arrayRemoveDuplicates(outerPositions, Cartographic.Cartesian3.equalsEpsilon, true);
+ if (outerPositions.length < 3) {
+ return;
+ }
+
+ var normal = scratchNormal;
+ var tangent = scratchTangent;
+ var bitangent = scratchBitangent;
+ var axis1 = axis1Scratch;
+ var axis2 = axis2Scratch;
+
+ var validGeometry = CoplanarPolygonGeometryLibrary.CoplanarPolygonGeometryLibrary.computeProjectTo2DArguments(outerPositions, centerScratch, axis1, axis2);
+ if (!validGeometry) {
+ return undefined;
+ }
+
+ normal = Cartographic.Cartesian3.cross(axis1, axis2, normal);
+ normal = Cartographic.Cartesian3.normalize(normal, normal);
+
+ if (!Cartographic.Cartesian3.equalsEpsilon(centerScratch, Cartographic.Cartesian3.ZERO, _Math.CesiumMath.EPSILON6)) {
+ var surfaceNormal = polygonGeometry._ellipsoid.geodeticSurfaceNormal(centerScratch, surfaceNormalScratch);
+ if (Cartographic.Cartesian3.dot(normal, surfaceNormal) < 0) {
+ normal = Cartographic.Cartesian3.negate(normal, normal);
+ axis1 = Cartographic.Cartesian3.negate(axis1, axis1);
+ }
+ }
+
+ var projectPoints = CoplanarPolygonGeometryLibrary.CoplanarPolygonGeometryLibrary.createProjectPointsTo2DFunction(centerScratch, axis1, axis2);
+ var projectPoint = CoplanarPolygonGeometryLibrary.CoplanarPolygonGeometryLibrary.createProjectPointTo2DFunction(centerScratch, axis1, axis2);
+
+ if (vertexFormat.tangent) {
+ tangent = Cartographic.Cartesian3.clone(axis1, tangent);
+ }
+ if (vertexFormat.bitangent) {
+ bitangent = Cartographic.Cartesian3.clone(axis2, bitangent);
+ }
+
+ var results = PolygonGeometryLibrary.PolygonGeometryLibrary.polygonsFromHierarchy(polygonHierarchy, projectPoints, false);
+ var hierarchy = results.hierarchy;
+ var polygons = results.polygons;
+
+ if (hierarchy.length === 0) {
+ return;
+ }
+ outerPositions = hierarchy[0].outerRing;
+
+ var boundingSphere = BoundingSphere.BoundingSphere.fromPoints(outerPositions);
+ var boundingRectangle = PolygonGeometryLibrary.PolygonGeometryLibrary.computeBoundingRectangle(normal, projectPoint, outerPositions, stRotation, scratchBR);
+
+ var geometries = [];
+ for (var i = 0; i < polygons.length; i++) {
+ var geometryInstance = new GeometryInstance.GeometryInstance({
+ geometry : createGeometryFromPolygon(polygons[i], vertexFormat, boundingRectangle, stRotation, projectPoint, normal, tangent, bitangent)
+ });
+
+ geometries.push(geometryInstance);
+ }
+
+ var geometry = GeometryPipeline.GeometryPipeline.combineInstances(geometries)[0];
+ geometry.attributes.position.values = new Float64Array(geometry.attributes.position.values);
+ geometry.indices = IndexDatatype.IndexDatatype.createTypedArray(geometry.attributes.position.values.length / 3, geometry.indices);
+
+ var attributes = geometry.attributes;
+ if (!vertexFormat.position) {
+ delete attributes.position;
+ }
+ return new GeometryAttribute.Geometry({
+ attributes : attributes,
+ indices : geometry.indices,
+ primitiveType : geometry.primitiveType,
+ boundingSphere : boundingSphere
+ });
+ };
+
+ function createCoplanarPolygonGeometry(polygonGeometry, offset) {
+ if (when.defined(offset)) {
+ polygonGeometry = CoplanarPolygonGeometry.unpack(polygonGeometry, offset);
+ }
+ return CoplanarPolygonGeometry.createGeometry(polygonGeometry);
+ }
+
+ return createCoplanarPolygonGeometry;
+
+});
--
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