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1100 lines
32 KiB
1100 lines
32 KiB
/**
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* @license
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* Cesium - https://github.com/CesiumGS/cesium
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* Version 1.99
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*
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* Copyright 2011-2022 Cesium Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Columbus View (Pat. Pend.)
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*
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* Portions licensed separately.
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* See https://github.com/CesiumGS/cesium/blob/main/LICENSE.md for full licensing details.
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*/
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define(['exports', './ArcType-89067bf8', './arrayRemoveDuplicates-3fb00ed2', './Matrix2-f9f1b94b', './Matrix3-ea964448', './ComponentDatatype-ebdce3ba', './defaultValue-135942ca', './EllipsoidRhumbLine-6161ec8c', './GeometryAttribute-51d61732', './GeometryAttributes-899f8bd0', './GeometryPipeline-576f16cd', './IndexDatatype-fa75fe25', './Math-efde0c7b', './PolygonPipeline-cf232713', './Transforms-ac2d28a9'], (function (exports, ArcType, arrayRemoveDuplicates, Matrix2, Matrix3, ComponentDatatype, defaultValue, EllipsoidRhumbLine, GeometryAttribute, GeometryAttributes, GeometryPipeline, IndexDatatype, Math$1, PolygonPipeline, Transforms) { 'use strict';
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/**
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* A queue that can enqueue items at the end, and dequeue items from the front.
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*
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* @alias Queue
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* @constructor
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*/
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function Queue() {
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this._array = [];
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this._offset = 0;
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this._length = 0;
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}
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Object.defineProperties(Queue.prototype, {
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/**
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* The length of the queue.
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*
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* @memberof Queue.prototype
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*
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* @type {Number}
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* @readonly
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*/
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length: {
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get: function () {
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return this._length;
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},
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},
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});
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/**
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* Enqueues the specified item.
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*
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* @param {*} item The item to enqueue.
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*/
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Queue.prototype.enqueue = function (item) {
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this._array.push(item);
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this._length++;
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};
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/**
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* Dequeues an item. Returns undefined if the queue is empty.
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*
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* @returns {*} The the dequeued item.
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*/
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Queue.prototype.dequeue = function () {
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if (this._length === 0) {
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return undefined;
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}
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const array = this._array;
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let offset = this._offset;
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const item = array[offset];
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array[offset] = undefined;
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offset++;
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if (offset > 10 && offset * 2 > array.length) {
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//compact array
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this._array = array.slice(offset);
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offset = 0;
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}
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this._offset = offset;
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this._length--;
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return item;
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};
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/**
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* Returns the item at the front of the queue. Returns undefined if the queue is empty.
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*
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* @returns {*} The item at the front of the queue.
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*/
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Queue.prototype.peek = function () {
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if (this._length === 0) {
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return undefined;
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}
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return this._array[this._offset];
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};
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/**
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* Check whether this queue contains the specified item.
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*
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* @param {*} item The item to search for.
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*/
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Queue.prototype.contains = function (item) {
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return this._array.indexOf(item) !== -1;
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};
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/**
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* Remove all items from the queue.
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*/
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Queue.prototype.clear = function () {
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this._array.length = this._offset = this._length = 0;
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};
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/**
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* Sort the items in the queue in-place.
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*
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* @param {Queue.Comparator} compareFunction A function that defines the sort order.
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*/
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Queue.prototype.sort = function (compareFunction) {
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if (this._offset > 0) {
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//compact array
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this._array = this._array.slice(this._offset);
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this._offset = 0;
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}
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this._array.sort(compareFunction);
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};
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/**
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* @private
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*/
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const PolygonGeometryLibrary = {};
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PolygonGeometryLibrary.computeHierarchyPackedLength = function (
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polygonHierarchy,
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CartesianX
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) {
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let numComponents = 0;
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const stack = [polygonHierarchy];
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while (stack.length > 0) {
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const hierarchy = stack.pop();
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if (!defaultValue.defined(hierarchy)) {
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continue;
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}
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numComponents += 2;
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const positions = hierarchy.positions;
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const holes = hierarchy.holes;
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if (defaultValue.defined(positions) && positions.length > 0) {
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numComponents += positions.length * CartesianX.packedLength;
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}
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if (defaultValue.defined(holes)) {
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const length = holes.length;
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for (let i = 0; i < length; ++i) {
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stack.push(holes[i]);
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}
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}
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}
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return numComponents;
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};
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PolygonGeometryLibrary.packPolygonHierarchy = function (
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polygonHierarchy,
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array,
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startingIndex,
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CartesianX
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) {
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const stack = [polygonHierarchy];
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while (stack.length > 0) {
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const hierarchy = stack.pop();
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if (!defaultValue.defined(hierarchy)) {
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continue;
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}
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const positions = hierarchy.positions;
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const holes = hierarchy.holes;
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array[startingIndex++] = defaultValue.defined(positions) ? positions.length : 0;
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array[startingIndex++] = defaultValue.defined(holes) ? holes.length : 0;
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if (defaultValue.defined(positions)) {
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const positionsLength = positions.length;
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for (
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let i = 0;
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i < positionsLength;
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++i, startingIndex += CartesianX.packedLength
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) {
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CartesianX.pack(positions[i], array, startingIndex);
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}
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}
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if (defaultValue.defined(holes)) {
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const holesLength = holes.length;
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for (let j = 0; j < holesLength; ++j) {
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stack.push(holes[j]);
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}
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}
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}
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return startingIndex;
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};
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PolygonGeometryLibrary.unpackPolygonHierarchy = function (
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array,
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startingIndex,
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CartesianX
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) {
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const positionsLength = array[startingIndex++];
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const holesLength = array[startingIndex++];
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const positions = new Array(positionsLength);
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const holes = holesLength > 0 ? new Array(holesLength) : undefined;
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for (
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let i = 0;
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i < positionsLength;
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++i, startingIndex += CartesianX.packedLength
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) {
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positions[i] = CartesianX.unpack(array, startingIndex);
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}
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for (let j = 0; j < holesLength; ++j) {
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holes[j] = PolygonGeometryLibrary.unpackPolygonHierarchy(
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array,
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startingIndex,
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CartesianX
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);
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startingIndex = holes[j].startingIndex;
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delete holes[j].startingIndex;
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}
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return {
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positions: positions,
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holes: holes,
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startingIndex: startingIndex,
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};
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};
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const distance2DScratch = new Matrix2.Cartesian2();
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function getPointAtDistance2D(p0, p1, distance, length) {
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Matrix2.Cartesian2.subtract(p1, p0, distance2DScratch);
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Matrix2.Cartesian2.multiplyByScalar(
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distance2DScratch,
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distance / length,
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distance2DScratch
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);
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Matrix2.Cartesian2.add(p0, distance2DScratch, distance2DScratch);
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return [distance2DScratch.x, distance2DScratch.y];
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}
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const distanceScratch = new Matrix3.Cartesian3();
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function getPointAtDistance(p0, p1, distance, length) {
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Matrix3.Cartesian3.subtract(p1, p0, distanceScratch);
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Matrix3.Cartesian3.multiplyByScalar(
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distanceScratch,
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distance / length,
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distanceScratch
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);
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Matrix3.Cartesian3.add(p0, distanceScratch, distanceScratch);
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return [distanceScratch.x, distanceScratch.y, distanceScratch.z];
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}
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PolygonGeometryLibrary.subdivideLineCount = function (p0, p1, minDistance) {
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const distance = Matrix3.Cartesian3.distance(p0, p1);
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const n = distance / minDistance;
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const countDivide = Math.max(0, Math.ceil(Math$1.CesiumMath.log2(n)));
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return Math.pow(2, countDivide);
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};
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const scratchCartographic0 = new Matrix3.Cartographic();
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const scratchCartographic1 = new Matrix3.Cartographic();
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const scratchCartographic2 = new Matrix3.Cartographic();
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const scratchCartesian0 = new Matrix3.Cartesian3();
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const scratchRhumbLine = new EllipsoidRhumbLine.EllipsoidRhumbLine();
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PolygonGeometryLibrary.subdivideRhumbLineCount = function (
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ellipsoid,
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p0,
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p1,
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minDistance
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) {
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const c0 = ellipsoid.cartesianToCartographic(p0, scratchCartographic0);
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const c1 = ellipsoid.cartesianToCartographic(p1, scratchCartographic1);
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const rhumb = new EllipsoidRhumbLine.EllipsoidRhumbLine(c0, c1, ellipsoid);
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const n = rhumb.surfaceDistance / minDistance;
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const countDivide = Math.max(0, Math.ceil(Math$1.CesiumMath.log2(n)));
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return Math.pow(2, countDivide);
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};
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/**
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* Subdivides texture coordinates based on the subdivision of the associated world positions.
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*
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* @param {Cartesian2} t0 First texture coordinate.
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* @param {Cartesian2} t1 Second texture coordinate.
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* @param {Cartesian3} p0 First world position.
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* @param {Cartesian3} p1 Second world position.
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* @param {Number} minDistance Minimum distance for a segment.
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* @param {Array<Cartesian2>} result The subdivided texture coordinates.
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*
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* @private
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*/
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PolygonGeometryLibrary.subdivideTexcoordLine = function (
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t0,
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t1,
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p0,
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p1,
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minDistance,
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result
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) {
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// Compute the number of subdivisions.
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const subdivisions = PolygonGeometryLibrary.subdivideLineCount(
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p0,
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p1,
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minDistance
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);
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// Compute the distance between each subdivided point.
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const length2D = Matrix2.Cartesian2.distance(t0, t1);
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const distanceBetweenCoords = length2D / subdivisions;
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// Resize the result array.
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const texcoords = result;
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texcoords.length = subdivisions * 2;
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// Compute texture coordinates using linear interpolation.
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let index = 0;
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for (let i = 0; i < subdivisions; i++) {
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const t = getPointAtDistance2D(t0, t1, i * distanceBetweenCoords, length2D);
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texcoords[index++] = t[0];
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texcoords[index++] = t[1];
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}
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return texcoords;
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};
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PolygonGeometryLibrary.subdivideLine = function (p0, p1, minDistance, result) {
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const numVertices = PolygonGeometryLibrary.subdivideLineCount(
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p0,
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p1,
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minDistance
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);
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const length = Matrix3.Cartesian3.distance(p0, p1);
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const distanceBetweenVertices = length / numVertices;
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if (!defaultValue.defined(result)) {
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result = [];
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}
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const positions = result;
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positions.length = numVertices * 3;
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let index = 0;
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for (let i = 0; i < numVertices; i++) {
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const p = getPointAtDistance(p0, p1, i * distanceBetweenVertices, length);
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positions[index++] = p[0];
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positions[index++] = p[1];
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positions[index++] = p[2];
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}
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return positions;
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};
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/**
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* Subdivides texture coordinates based on the subdivision of the associated world positions using a rhumb line.
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*
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* @param {Cartesian2} t0 First texture coordinate.
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* @param {Cartesian2} t1 Second texture coordinate.
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* @param {Ellipsoid} ellipsoid The ellipsoid.
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* @param {Cartesian3} p0 First world position.
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* @param {Cartesian3} p1 Second world position.
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* @param {Number} minDistance Minimum distance for a segment.
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* @param {Array<Cartesian2>} result The subdivided texture coordinates.
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*
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* @private
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*/
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PolygonGeometryLibrary.subdivideTexcoordRhumbLine = function (
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t0,
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t1,
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ellipsoid,
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p0,
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p1,
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minDistance,
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result
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) {
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// Compute the surface distance.
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const c0 = ellipsoid.cartesianToCartographic(p0, scratchCartographic0);
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const c1 = ellipsoid.cartesianToCartographic(p1, scratchCartographic1);
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scratchRhumbLine.setEndPoints(c0, c1);
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const n = scratchRhumbLine.surfaceDistance / minDistance;
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// Compute the number of subdivisions.
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const countDivide = Math.max(0, Math.ceil(Math$1.CesiumMath.log2(n)));
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const subdivisions = Math.pow(2, countDivide);
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// Compute the distance between each subdivided point.
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const length2D = Matrix2.Cartesian2.distance(t0, t1);
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const distanceBetweenCoords = length2D / subdivisions;
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// Resize the result array.
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const texcoords = result;
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texcoords.length = subdivisions * 2;
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// Compute texture coordinates using linear interpolation.
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let index = 0;
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for (let i = 0; i < subdivisions; i++) {
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const t = getPointAtDistance2D(t0, t1, i * distanceBetweenCoords, length2D);
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texcoords[index++] = t[0];
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texcoords[index++] = t[1];
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}
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return texcoords;
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};
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PolygonGeometryLibrary.subdivideRhumbLine = function (
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ellipsoid,
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p0,
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p1,
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minDistance,
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result
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) {
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const c0 = ellipsoid.cartesianToCartographic(p0, scratchCartographic0);
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const c1 = ellipsoid.cartesianToCartographic(p1, scratchCartographic1);
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const rhumb = new EllipsoidRhumbLine.EllipsoidRhumbLine(c0, c1, ellipsoid);
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const n = rhumb.surfaceDistance / minDistance;
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const countDivide = Math.max(0, Math.ceil(Math$1.CesiumMath.log2(n)));
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const numVertices = Math.pow(2, countDivide);
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const distanceBetweenVertices = rhumb.surfaceDistance / numVertices;
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if (!defaultValue.defined(result)) {
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result = [];
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}
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const positions = result;
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positions.length = numVertices * 3;
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let index = 0;
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for (let i = 0; i < numVertices; i++) {
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const c = rhumb.interpolateUsingSurfaceDistance(
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i * distanceBetweenVertices,
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scratchCartographic2
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);
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const p = ellipsoid.cartographicToCartesian(c, scratchCartesian0);
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positions[index++] = p.x;
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positions[index++] = p.y;
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positions[index++] = p.z;
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}
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return positions;
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};
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const scaleToGeodeticHeightN1 = new Matrix3.Cartesian3();
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const scaleToGeodeticHeightN2 = new Matrix3.Cartesian3();
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const scaleToGeodeticHeightP1 = new Matrix3.Cartesian3();
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const scaleToGeodeticHeightP2 = new Matrix3.Cartesian3();
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PolygonGeometryLibrary.scaleToGeodeticHeightExtruded = function (
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geometry,
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maxHeight,
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minHeight,
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ellipsoid,
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perPositionHeight
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) {
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ellipsoid = defaultValue.defaultValue(ellipsoid, Matrix3.Ellipsoid.WGS84);
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const n1 = scaleToGeodeticHeightN1;
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let n2 = scaleToGeodeticHeightN2;
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const p = scaleToGeodeticHeightP1;
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let p2 = scaleToGeodeticHeightP2;
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if (
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defaultValue.defined(geometry) &&
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defaultValue.defined(geometry.attributes) &&
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defaultValue.defined(geometry.attributes.position)
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) {
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const positions = geometry.attributes.position.values;
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const length = positions.length / 2;
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for (let i = 0; i < length; i += 3) {
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Matrix3.Cartesian3.fromArray(positions, i, p);
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ellipsoid.geodeticSurfaceNormal(p, n1);
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p2 = ellipsoid.scaleToGeodeticSurface(p, p2);
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n2 = Matrix3.Cartesian3.multiplyByScalar(n1, minHeight, n2);
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n2 = Matrix3.Cartesian3.add(p2, n2, n2);
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positions[i + length] = n2.x;
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positions[i + 1 + length] = n2.y;
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positions[i + 2 + length] = n2.z;
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if (perPositionHeight) {
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p2 = Matrix3.Cartesian3.clone(p, p2);
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}
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n2 = Matrix3.Cartesian3.multiplyByScalar(n1, maxHeight, n2);
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n2 = Matrix3.Cartesian3.add(p2, n2, n2);
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positions[i] = n2.x;
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positions[i + 1] = n2.y;
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positions[i + 2] = n2.z;
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}
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}
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return geometry;
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};
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PolygonGeometryLibrary.polygonOutlinesFromHierarchy = function (
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polygonHierarchy,
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scaleToEllipsoidSurface,
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ellipsoid
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) {
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// create from a polygon hierarchy
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// Algorithm adapted from http://www.geometrictools.com/Documentation/TriangulationByEarClipping.pdf
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|
const polygons = [];
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const queue = new Queue();
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queue.enqueue(polygonHierarchy);
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let i;
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let j;
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let length;
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while (queue.length !== 0) {
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const outerNode = queue.dequeue();
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let outerRing = outerNode.positions;
|
|
if (scaleToEllipsoidSurface) {
|
|
length = outerRing.length;
|
|
for (i = 0; i < length; i++) {
|
|
ellipsoid.scaleToGeodeticSurface(outerRing[i], outerRing[i]);
|
|
}
|
|
}
|
|
outerRing = arrayRemoveDuplicates.arrayRemoveDuplicates(
|
|
outerRing,
|
|
Matrix3.Cartesian3.equalsEpsilon,
|
|
true
|
|
);
|
|
if (outerRing.length < 3) {
|
|
continue;
|
|
}
|
|
|
|
const numChildren = outerNode.holes ? outerNode.holes.length : 0;
|
|
// The outer polygon contains inner polygons
|
|
for (i = 0; i < numChildren; i++) {
|
|
const hole = outerNode.holes[i];
|
|
let holePositions = hole.positions;
|
|
if (scaleToEllipsoidSurface) {
|
|
length = holePositions.length;
|
|
for (j = 0; j < length; ++j) {
|
|
ellipsoid.scaleToGeodeticSurface(holePositions[j], holePositions[j]);
|
|
}
|
|
}
|
|
holePositions = arrayRemoveDuplicates.arrayRemoveDuplicates(
|
|
holePositions,
|
|
Matrix3.Cartesian3.equalsEpsilon,
|
|
true
|
|
);
|
|
if (holePositions.length < 3) {
|
|
continue;
|
|
}
|
|
polygons.push(holePositions);
|
|
|
|
let numGrandchildren = 0;
|
|
if (defaultValue.defined(hole.holes)) {
|
|
numGrandchildren = hole.holes.length;
|
|
}
|
|
|
|
for (j = 0; j < numGrandchildren; j++) {
|
|
queue.enqueue(hole.holes[j]);
|
|
}
|
|
}
|
|
|
|
polygons.push(outerRing);
|
|
}
|
|
|
|
return polygons;
|
|
};
|
|
|
|
PolygonGeometryLibrary.polygonsFromHierarchy = function (
|
|
polygonHierarchy,
|
|
keepDuplicates,
|
|
projectPointsTo2D,
|
|
scaleToEllipsoidSurface,
|
|
ellipsoid
|
|
) {
|
|
// create from a polygon hierarchy
|
|
// Algorithm adapted from http://www.geometrictools.com/Documentation/TriangulationByEarClipping.pdf
|
|
const hierarchy = [];
|
|
const polygons = [];
|
|
|
|
const queue = new Queue();
|
|
queue.enqueue(polygonHierarchy);
|
|
|
|
while (queue.length !== 0) {
|
|
const outerNode = queue.dequeue();
|
|
let outerRing = outerNode.positions;
|
|
const holes = outerNode.holes;
|
|
|
|
let i;
|
|
let length;
|
|
if (scaleToEllipsoidSurface) {
|
|
length = outerRing.length;
|
|
for (i = 0; i < length; i++) {
|
|
ellipsoid.scaleToGeodeticSurface(outerRing[i], outerRing[i]);
|
|
}
|
|
}
|
|
|
|
if (!keepDuplicates) {
|
|
outerRing = arrayRemoveDuplicates.arrayRemoveDuplicates(
|
|
outerRing,
|
|
Matrix3.Cartesian3.equalsEpsilon,
|
|
true
|
|
);
|
|
}
|
|
if (outerRing.length < 3) {
|
|
continue;
|
|
}
|
|
|
|
let positions2D = projectPointsTo2D(outerRing);
|
|
if (!defaultValue.defined(positions2D)) {
|
|
continue;
|
|
}
|
|
const holeIndices = [];
|
|
|
|
let originalWindingOrder = PolygonPipeline.PolygonPipeline.computeWindingOrder2D(
|
|
positions2D
|
|
);
|
|
if (originalWindingOrder === PolygonPipeline.WindingOrder.CLOCKWISE) {
|
|
positions2D.reverse();
|
|
outerRing = outerRing.slice().reverse();
|
|
}
|
|
|
|
let positions = outerRing.slice();
|
|
const numChildren = defaultValue.defined(holes) ? holes.length : 0;
|
|
const polygonHoles = [];
|
|
let j;
|
|
|
|
for (i = 0; i < numChildren; i++) {
|
|
const hole = holes[i];
|
|
let holePositions = hole.positions;
|
|
if (scaleToEllipsoidSurface) {
|
|
length = holePositions.length;
|
|
for (j = 0; j < length; ++j) {
|
|
ellipsoid.scaleToGeodeticSurface(holePositions[j], holePositions[j]);
|
|
}
|
|
}
|
|
|
|
if (!keepDuplicates) {
|
|
holePositions = arrayRemoveDuplicates.arrayRemoveDuplicates(
|
|
holePositions,
|
|
Matrix3.Cartesian3.equalsEpsilon,
|
|
true
|
|
);
|
|
}
|
|
if (holePositions.length < 3) {
|
|
continue;
|
|
}
|
|
|
|
const holePositions2D = projectPointsTo2D(holePositions);
|
|
if (!defaultValue.defined(holePositions2D)) {
|
|
continue;
|
|
}
|
|
|
|
originalWindingOrder = PolygonPipeline.PolygonPipeline.computeWindingOrder2D(
|
|
holePositions2D
|
|
);
|
|
if (originalWindingOrder === PolygonPipeline.WindingOrder.CLOCKWISE) {
|
|
holePositions2D.reverse();
|
|
holePositions = holePositions.slice().reverse();
|
|
}
|
|
|
|
polygonHoles.push(holePositions);
|
|
holeIndices.push(positions.length);
|
|
positions = positions.concat(holePositions);
|
|
positions2D = positions2D.concat(holePositions2D);
|
|
|
|
let numGrandchildren = 0;
|
|
if (defaultValue.defined(hole.holes)) {
|
|
numGrandchildren = hole.holes.length;
|
|
}
|
|
|
|
for (j = 0; j < numGrandchildren; j++) {
|
|
queue.enqueue(hole.holes[j]);
|
|
}
|
|
}
|
|
|
|
hierarchy.push({
|
|
outerRing: outerRing,
|
|
holes: polygonHoles,
|
|
});
|
|
polygons.push({
|
|
positions: positions,
|
|
positions2D: positions2D,
|
|
holes: holeIndices,
|
|
});
|
|
}
|
|
|
|
return {
|
|
hierarchy: hierarchy,
|
|
polygons: polygons,
|
|
};
|
|
};
|
|
|
|
const computeBoundingRectangleCartesian2 = new Matrix2.Cartesian2();
|
|
const computeBoundingRectangleCartesian3 = new Matrix3.Cartesian3();
|
|
const computeBoundingRectangleQuaternion = new Transforms.Quaternion();
|
|
const computeBoundingRectangleMatrix3 = new Matrix3.Matrix3();
|
|
PolygonGeometryLibrary.computeBoundingRectangle = function (
|
|
planeNormal,
|
|
projectPointTo2D,
|
|
positions,
|
|
angle,
|
|
result
|
|
) {
|
|
const rotation = Transforms.Quaternion.fromAxisAngle(
|
|
planeNormal,
|
|
angle,
|
|
computeBoundingRectangleQuaternion
|
|
);
|
|
const textureMatrix = Matrix3.Matrix3.fromQuaternion(
|
|
rotation,
|
|
computeBoundingRectangleMatrix3
|
|
);
|
|
|
|
let minX = Number.POSITIVE_INFINITY;
|
|
let maxX = Number.NEGATIVE_INFINITY;
|
|
let minY = Number.POSITIVE_INFINITY;
|
|
let maxY = Number.NEGATIVE_INFINITY;
|
|
|
|
const length = positions.length;
|
|
for (let i = 0; i < length; ++i) {
|
|
const p = Matrix3.Cartesian3.clone(
|
|
positions[i],
|
|
computeBoundingRectangleCartesian3
|
|
);
|
|
Matrix3.Matrix3.multiplyByVector(textureMatrix, p, p);
|
|
const st = projectPointTo2D(p, computeBoundingRectangleCartesian2);
|
|
|
|
if (defaultValue.defined(st)) {
|
|
minX = Math.min(minX, st.x);
|
|
maxX = Math.max(maxX, st.x);
|
|
|
|
minY = Math.min(minY, st.y);
|
|
maxY = Math.max(maxY, st.y);
|
|
}
|
|
}
|
|
|
|
result.x = minX;
|
|
result.y = minY;
|
|
result.width = maxX - minX;
|
|
result.height = maxY - minY;
|
|
return result;
|
|
};
|
|
|
|
PolygonGeometryLibrary.createGeometryFromPositions = function (
|
|
ellipsoid,
|
|
polygon,
|
|
textureCoordinates,
|
|
granularity,
|
|
perPositionHeight,
|
|
vertexFormat,
|
|
arcType
|
|
) {
|
|
let 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];
|
|
}
|
|
|
|
const positions = polygon.positions;
|
|
|
|
const hasTexcoords = defaultValue.defined(textureCoordinates);
|
|
const texcoords = hasTexcoords ? textureCoordinates.positions : undefined;
|
|
|
|
if (perPositionHeight) {
|
|
const length = positions.length;
|
|
const flattenedPositions = new Array(length * 3);
|
|
let index = 0;
|
|
for (let i = 0; i < length; i++) {
|
|
const p = positions[i];
|
|
flattenedPositions[index++] = p.x;
|
|
flattenedPositions[index++] = p.y;
|
|
flattenedPositions[index++] = p.z;
|
|
}
|
|
|
|
const geometryOptions = {
|
|
attributes: {
|
|
position: new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.DOUBLE,
|
|
componentsPerAttribute: 3,
|
|
values: flattenedPositions,
|
|
}),
|
|
},
|
|
indices: indices,
|
|
primitiveType: GeometryAttribute.PrimitiveType.TRIANGLES,
|
|
};
|
|
|
|
if (hasTexcoords) {
|
|
geometryOptions.attributes.st = new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
|
|
componentsPerAttribute: 2,
|
|
values: Matrix2.Cartesian2.packArray(texcoords),
|
|
});
|
|
}
|
|
|
|
const geometry = new GeometryAttribute.Geometry(geometryOptions);
|
|
|
|
if (vertexFormat.normal) {
|
|
return GeometryPipeline.GeometryPipeline.computeNormal(geometry);
|
|
}
|
|
|
|
return geometry;
|
|
}
|
|
|
|
if (arcType === ArcType.ArcType.GEODESIC) {
|
|
return PolygonPipeline.PolygonPipeline.computeSubdivision(
|
|
ellipsoid,
|
|
positions,
|
|
indices,
|
|
texcoords,
|
|
granularity
|
|
);
|
|
} else if (arcType === ArcType.ArcType.RHUMB) {
|
|
return PolygonPipeline.PolygonPipeline.computeRhumbLineSubdivision(
|
|
ellipsoid,
|
|
positions,
|
|
indices,
|
|
texcoords,
|
|
granularity
|
|
);
|
|
}
|
|
};
|
|
|
|
const computeWallTexcoordsSubdivided = [];
|
|
const computeWallIndicesSubdivided = [];
|
|
const p1Scratch = new Matrix3.Cartesian3();
|
|
const p2Scratch = new Matrix3.Cartesian3();
|
|
|
|
PolygonGeometryLibrary.computeWallGeometry = function (
|
|
positions,
|
|
textureCoordinates,
|
|
ellipsoid,
|
|
granularity,
|
|
perPositionHeight,
|
|
arcType
|
|
) {
|
|
let edgePositions;
|
|
let topEdgeLength;
|
|
let i;
|
|
let p1;
|
|
let p2;
|
|
let t1;
|
|
let t2;
|
|
let edgeTexcoords;
|
|
let topEdgeTexcoordLength;
|
|
|
|
let length = positions.length;
|
|
let index = 0;
|
|
let textureIndex = 0;
|
|
|
|
const hasTexcoords = defaultValue.defined(textureCoordinates);
|
|
const texcoords = hasTexcoords ? textureCoordinates.positions : undefined;
|
|
|
|
if (!perPositionHeight) {
|
|
const minDistance = Math$1.CesiumMath.chordLength(
|
|
granularity,
|
|
ellipsoid.maximumRadius
|
|
);
|
|
|
|
let numVertices = 0;
|
|
if (arcType === ArcType.ArcType.GEODESIC) {
|
|
for (i = 0; i < length; i++) {
|
|
numVertices += PolygonGeometryLibrary.subdivideLineCount(
|
|
positions[i],
|
|
positions[(i + 1) % length],
|
|
minDistance
|
|
);
|
|
}
|
|
} else if (arcType === ArcType.ArcType.RHUMB) {
|
|
for (i = 0; i < length; i++) {
|
|
numVertices += PolygonGeometryLibrary.subdivideRhumbLineCount(
|
|
ellipsoid,
|
|
positions[i],
|
|
positions[(i + 1) % length],
|
|
minDistance
|
|
);
|
|
}
|
|
}
|
|
|
|
topEdgeLength = (numVertices + length) * 3;
|
|
edgePositions = new Array(topEdgeLength * 2);
|
|
|
|
if (hasTexcoords) {
|
|
topEdgeTexcoordLength = (numVertices + length) * 2;
|
|
edgeTexcoords = new Array(topEdgeTexcoordLength * 2);
|
|
}
|
|
|
|
for (i = 0; i < length; i++) {
|
|
p1 = positions[i];
|
|
p2 = positions[(i + 1) % length];
|
|
|
|
let tempPositions;
|
|
let tempTexcoords;
|
|
|
|
if (hasTexcoords) {
|
|
t1 = texcoords[i];
|
|
t2 = texcoords[(i + 1) % length];
|
|
}
|
|
|
|
if (arcType === ArcType.ArcType.GEODESIC) {
|
|
tempPositions = PolygonGeometryLibrary.subdivideLine(
|
|
p1,
|
|
p2,
|
|
minDistance,
|
|
computeWallIndicesSubdivided
|
|
);
|
|
if (hasTexcoords) {
|
|
tempTexcoords = PolygonGeometryLibrary.subdivideTexcoordLine(
|
|
t1,
|
|
t2,
|
|
p1,
|
|
p2,
|
|
minDistance,
|
|
computeWallTexcoordsSubdivided
|
|
);
|
|
}
|
|
} else if (arcType === ArcType.ArcType.RHUMB) {
|
|
tempPositions = PolygonGeometryLibrary.subdivideRhumbLine(
|
|
ellipsoid,
|
|
p1,
|
|
p2,
|
|
minDistance,
|
|
computeWallIndicesSubdivided
|
|
);
|
|
if (hasTexcoords) {
|
|
tempTexcoords = PolygonGeometryLibrary.subdivideTexcoordRhumbLine(
|
|
t1,
|
|
t2,
|
|
ellipsoid,
|
|
p1,
|
|
p2,
|
|
minDistance,
|
|
computeWallTexcoordsSubdivided
|
|
);
|
|
}
|
|
}
|
|
const tempPositionsLength = tempPositions.length;
|
|
for (let j = 0; j < tempPositionsLength; ++j, ++index) {
|
|
edgePositions[index] = tempPositions[j];
|
|
edgePositions[index + topEdgeLength] = tempPositions[j];
|
|
}
|
|
|
|
edgePositions[index] = p2.x;
|
|
edgePositions[index + topEdgeLength] = p2.x;
|
|
++index;
|
|
|
|
edgePositions[index] = p2.y;
|
|
edgePositions[index + topEdgeLength] = p2.y;
|
|
++index;
|
|
|
|
edgePositions[index] = p2.z;
|
|
edgePositions[index + topEdgeLength] = p2.z;
|
|
++index;
|
|
|
|
if (hasTexcoords) {
|
|
const tempTexcoordsLength = tempTexcoords.length;
|
|
for (let k = 0; k < tempTexcoordsLength; ++k, ++textureIndex) {
|
|
edgeTexcoords[textureIndex] = tempTexcoords[k];
|
|
edgeTexcoords[textureIndex + topEdgeTexcoordLength] =
|
|
tempTexcoords[k];
|
|
}
|
|
|
|
edgeTexcoords[textureIndex] = t2.x;
|
|
edgeTexcoords[textureIndex + topEdgeTexcoordLength] = t2.x;
|
|
++textureIndex;
|
|
|
|
edgeTexcoords[textureIndex] = t2.y;
|
|
edgeTexcoords[textureIndex + topEdgeTexcoordLength] = t2.y;
|
|
++textureIndex;
|
|
}
|
|
}
|
|
} else {
|
|
topEdgeLength = length * 3 * 2;
|
|
edgePositions = new Array(topEdgeLength * 2);
|
|
|
|
if (hasTexcoords) {
|
|
topEdgeTexcoordLength = length * 2 * 2;
|
|
edgeTexcoords = new Array(topEdgeTexcoordLength * 2);
|
|
}
|
|
|
|
for (i = 0; i < length; i++) {
|
|
p1 = positions[i];
|
|
p2 = positions[(i + 1) % length];
|
|
edgePositions[index] = edgePositions[index + topEdgeLength] = p1.x;
|
|
++index;
|
|
edgePositions[index] = edgePositions[index + topEdgeLength] = p1.y;
|
|
++index;
|
|
edgePositions[index] = edgePositions[index + topEdgeLength] = p1.z;
|
|
++index;
|
|
edgePositions[index] = edgePositions[index + topEdgeLength] = p2.x;
|
|
++index;
|
|
edgePositions[index] = edgePositions[index + topEdgeLength] = p2.y;
|
|
++index;
|
|
edgePositions[index] = edgePositions[index + topEdgeLength] = p2.z;
|
|
++index;
|
|
|
|
if (hasTexcoords) {
|
|
t1 = texcoords[i];
|
|
t2 = texcoords[(i + 1) % length];
|
|
edgeTexcoords[textureIndex] = edgeTexcoords[
|
|
textureIndex + topEdgeTexcoordLength
|
|
] = t1.x;
|
|
++textureIndex;
|
|
edgeTexcoords[textureIndex] = edgeTexcoords[
|
|
textureIndex + topEdgeTexcoordLength
|
|
] = t1.y;
|
|
++textureIndex;
|
|
edgeTexcoords[textureIndex] = edgeTexcoords[
|
|
textureIndex + topEdgeTexcoordLength
|
|
] = t2.x;
|
|
++textureIndex;
|
|
edgeTexcoords[textureIndex] = edgeTexcoords[
|
|
textureIndex + topEdgeTexcoordLength
|
|
] = t2.y;
|
|
++textureIndex;
|
|
}
|
|
}
|
|
}
|
|
|
|
length = edgePositions.length;
|
|
const indices = IndexDatatype.IndexDatatype.createTypedArray(
|
|
length / 3,
|
|
length - positions.length * 6
|
|
);
|
|
let edgeIndex = 0;
|
|
length /= 6;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
const UL = i;
|
|
const UR = UL + 1;
|
|
const LL = UL + length;
|
|
const LR = LL + 1;
|
|
|
|
p1 = Matrix3.Cartesian3.fromArray(edgePositions, UL * 3, p1Scratch);
|
|
p2 = Matrix3.Cartesian3.fromArray(edgePositions, UR * 3, p2Scratch);
|
|
if (
|
|
Matrix3.Cartesian3.equalsEpsilon(
|
|
p1,
|
|
p2,
|
|
Math$1.CesiumMath.EPSILON10,
|
|
Math$1.CesiumMath.EPSILON10
|
|
)
|
|
) {
|
|
//skip corner
|
|
continue;
|
|
}
|
|
|
|
indices[edgeIndex++] = UL;
|
|
indices[edgeIndex++] = LL;
|
|
indices[edgeIndex++] = UR;
|
|
indices[edgeIndex++] = UR;
|
|
indices[edgeIndex++] = LL;
|
|
indices[edgeIndex++] = LR;
|
|
}
|
|
|
|
const geometryOptions = {
|
|
attributes: new GeometryAttributes.GeometryAttributes({
|
|
position: new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.DOUBLE,
|
|
componentsPerAttribute: 3,
|
|
values: edgePositions,
|
|
}),
|
|
}),
|
|
indices: indices,
|
|
primitiveType: GeometryAttribute.PrimitiveType.TRIANGLES,
|
|
};
|
|
|
|
if (hasTexcoords) {
|
|
geometryOptions.attributes.st = new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
|
|
componentsPerAttribute: 2,
|
|
values: edgeTexcoords,
|
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});
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}
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const geometry = new GeometryAttribute.Geometry(geometryOptions);
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return geometry;
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};
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var PolygonGeometryLibrary$1 = PolygonGeometryLibrary;
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|
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exports.PolygonGeometryLibrary = PolygonGeometryLibrary$1;
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|
|
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}));
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