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149 lines
6.0 KiB
149 lines
6.0 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(['./defaultValue-135942ca', './Matrix3-ea964448', './Check-40d84a28', './EllipsoidGeometry-fb52d895', './VertexFormat-1d6950e1', './Math-efde0c7b', './Transforms-ac2d28a9', './Matrix2-f9f1b94b', './RuntimeError-f0dada00', './combine-462d91dd', './ComponentDatatype-ebdce3ba', './WebGLConstants-fcb70ee3', './GeometryAttribute-51d61732', './GeometryAttributes-899f8bd0', './GeometryOffsetAttribute-d3a42805', './IndexDatatype-fa75fe25'], (function (defaultValue, Matrix3, Check, EllipsoidGeometry, VertexFormat, Math, Transforms, Matrix2, RuntimeError, combine, ComponentDatatype, WebGLConstants, GeometryAttribute, GeometryAttributes, GeometryOffsetAttribute, IndexDatatype) { 'use strict';
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/**
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* A description of a sphere centered at the origin.
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*
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* @alias SphereGeometry
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* @constructor
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*
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* @param {Object} [options] Object with the following properties:
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* @param {Number} [options.radius=1.0] The radius of the sphere.
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* @param {Number} [options.stackPartitions=64] The number of times to partition the ellipsoid into stacks.
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* @param {Number} [options.slicePartitions=64] The number of times to partition the ellipsoid into radial slices.
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* @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
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*
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* @exception {DeveloperError} options.slicePartitions cannot be less than three.
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* @exception {DeveloperError} options.stackPartitions cannot be less than three.
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*
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* @see SphereGeometry#createGeometry
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*
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* @example
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* const sphere = new Cesium.SphereGeometry({
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* radius : 100.0,
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* vertexFormat : Cesium.VertexFormat.POSITION_ONLY
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* });
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* const geometry = Cesium.SphereGeometry.createGeometry(sphere);
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*/
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function SphereGeometry(options) {
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const radius = defaultValue.defaultValue(options.radius, 1.0);
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const radii = new Matrix3.Cartesian3(radius, radius, radius);
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const ellipsoidOptions = {
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radii: radii,
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stackPartitions: options.stackPartitions,
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slicePartitions: options.slicePartitions,
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vertexFormat: options.vertexFormat,
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};
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this._ellipsoidGeometry = new EllipsoidGeometry.EllipsoidGeometry(ellipsoidOptions);
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this._workerName = "createSphereGeometry";
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}
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/**
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* The number of elements used to pack the object into an array.
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* @type {Number}
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*/
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SphereGeometry.packedLength = EllipsoidGeometry.EllipsoidGeometry.packedLength;
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/**
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* Stores the provided instance into the provided array.
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*
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* @param {SphereGeometry} value The value to pack.
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* @param {Number[]} array The array to pack into.
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* @param {Number} [startingIndex=0] The index into the array at which to start packing the elements.
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*
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* @returns {Number[]} The array that was packed into
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*/
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SphereGeometry.pack = function (value, array, startingIndex) {
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//>>includeStart('debug', pragmas.debug);
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Check.Check.typeOf.object("value", value);
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//>>includeEnd('debug');
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return EllipsoidGeometry.EllipsoidGeometry.pack(value._ellipsoidGeometry, array, startingIndex);
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};
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const scratchEllipsoidGeometry = new EllipsoidGeometry.EllipsoidGeometry();
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const scratchOptions = {
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radius: undefined,
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radii: new Matrix3.Cartesian3(),
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vertexFormat: new VertexFormat.VertexFormat(),
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stackPartitions: undefined,
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slicePartitions: undefined,
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};
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/**
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* Retrieves an instance from a packed array.
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*
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* @param {Number[]} array The packed array.
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* @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
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* @param {SphereGeometry} [result] The object into which to store the result.
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* @returns {SphereGeometry} The modified result parameter or a new SphereGeometry instance if one was not provided.
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*/
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SphereGeometry.unpack = function (array, startingIndex, result) {
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const ellipsoidGeometry = EllipsoidGeometry.EllipsoidGeometry.unpack(
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array,
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startingIndex,
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scratchEllipsoidGeometry
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);
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scratchOptions.vertexFormat = VertexFormat.VertexFormat.clone(
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ellipsoidGeometry._vertexFormat,
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scratchOptions.vertexFormat
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);
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scratchOptions.stackPartitions = ellipsoidGeometry._stackPartitions;
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scratchOptions.slicePartitions = ellipsoidGeometry._slicePartitions;
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if (!defaultValue.defined(result)) {
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scratchOptions.radius = ellipsoidGeometry._radii.x;
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return new SphereGeometry(scratchOptions);
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}
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Matrix3.Cartesian3.clone(ellipsoidGeometry._radii, scratchOptions.radii);
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result._ellipsoidGeometry = new EllipsoidGeometry.EllipsoidGeometry(scratchOptions);
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return result;
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};
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/**
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* Computes the geometric representation of a sphere, including its vertices, indices, and a bounding sphere.
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*
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* @param {SphereGeometry} sphereGeometry A description of the sphere.
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* @returns {Geometry|undefined} The computed vertices and indices.
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*/
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SphereGeometry.createGeometry = function (sphereGeometry) {
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return EllipsoidGeometry.EllipsoidGeometry.createGeometry(sphereGeometry._ellipsoidGeometry);
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};
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function createSphereGeometry(sphereGeometry, offset) {
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if (defaultValue.defined(offset)) {
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sphereGeometry = SphereGeometry.unpack(sphereGeometry, offset);
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}
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return SphereGeometry.createGeometry(sphereGeometry);
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}
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return createSphereGeometry;
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}));
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