399 lines
13 KiB
JavaScript
399 lines
13 KiB
JavaScript
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/**
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* @license
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* Cesium - https://github.com/CesiumGS/cesium
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* Version 1.117
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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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import {
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CylinderGeometryLibrary_default
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} from "./chunk-ZC4AGBZK.js";
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import {
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GeometryOffsetAttribute_default
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} from "./chunk-S4XDCPKD.js";
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import {
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VertexFormat_default
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} from "./chunk-4KIUON73.js";
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import {
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IndexDatatype_default
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} from "./chunk-WWP3I7R5.js";
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import {
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GeometryAttributes_default
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} from "./chunk-RL73GOEF.js";
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import {
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GeometryAttribute_default,
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Geometry_default,
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PrimitiveType_default
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} from "./chunk-34DGOKCO.js";
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import {
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BoundingSphere_default
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} from "./chunk-NI2R52QD.js";
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import {
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ComponentDatatype_default
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} from "./chunk-TMMOULW3.js";
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import {
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Cartesian2_default,
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Cartesian3_default
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} from "./chunk-C5CE4OG6.js";
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import {
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Math_default
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} from "./chunk-4PHPQRSH.js";
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import {
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defaultValue_default
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} from "./chunk-UCPPWV64.js";
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import {
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DeveloperError_default
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} from "./chunk-U4IMCOF5.js";
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import {
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defined_default
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} from "./chunk-BDUJXBVF.js";
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// packages/engine/Source/Core/CylinderGeometry.js
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var radiusScratch = new Cartesian2_default();
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var normalScratch = new Cartesian3_default();
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var bitangentScratch = new Cartesian3_default();
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var tangentScratch = new Cartesian3_default();
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var positionScratch = new Cartesian3_default();
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function CylinderGeometry(options) {
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options = defaultValue_default(options, defaultValue_default.EMPTY_OBJECT);
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const length = options.length;
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const topRadius = options.topRadius;
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const bottomRadius = options.bottomRadius;
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const vertexFormat = defaultValue_default(options.vertexFormat, VertexFormat_default.DEFAULT);
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const slices = defaultValue_default(options.slices, 128);
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if (!defined_default(length)) {
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throw new DeveloperError_default("options.length must be defined.");
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}
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if (!defined_default(topRadius)) {
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throw new DeveloperError_default("options.topRadius must be defined.");
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}
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if (!defined_default(bottomRadius)) {
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throw new DeveloperError_default("options.bottomRadius must be defined.");
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}
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if (slices < 3) {
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throw new DeveloperError_default(
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"options.slices must be greater than or equal to 3."
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);
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}
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if (defined_default(options.offsetAttribute) && options.offsetAttribute === GeometryOffsetAttribute_default.TOP) {
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throw new DeveloperError_default(
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"GeometryOffsetAttribute.TOP is not a supported options.offsetAttribute for this geometry."
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);
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}
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this._length = length;
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this._topRadius = topRadius;
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this._bottomRadius = bottomRadius;
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this._vertexFormat = VertexFormat_default.clone(vertexFormat);
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this._slices = slices;
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this._offsetAttribute = options.offsetAttribute;
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this._workerName = "createCylinderGeometry";
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}
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CylinderGeometry.packedLength = VertexFormat_default.packedLength + 5;
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CylinderGeometry.pack = function(value, array, startingIndex) {
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if (!defined_default(value)) {
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throw new DeveloperError_default("value is required");
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}
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if (!defined_default(array)) {
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throw new DeveloperError_default("array is required");
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}
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startingIndex = defaultValue_default(startingIndex, 0);
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VertexFormat_default.pack(value._vertexFormat, array, startingIndex);
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startingIndex += VertexFormat_default.packedLength;
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array[startingIndex++] = value._length;
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array[startingIndex++] = value._topRadius;
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array[startingIndex++] = value._bottomRadius;
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array[startingIndex++] = value._slices;
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array[startingIndex] = defaultValue_default(value._offsetAttribute, -1);
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return array;
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};
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var scratchVertexFormat = new VertexFormat_default();
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var scratchOptions = {
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vertexFormat: scratchVertexFormat,
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length: void 0,
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topRadius: void 0,
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bottomRadius: void 0,
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slices: void 0,
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offsetAttribute: void 0
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};
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CylinderGeometry.unpack = function(array, startingIndex, result) {
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if (!defined_default(array)) {
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throw new DeveloperError_default("array is required");
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}
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startingIndex = defaultValue_default(startingIndex, 0);
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const vertexFormat = VertexFormat_default.unpack(
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array,
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startingIndex,
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scratchVertexFormat
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);
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startingIndex += VertexFormat_default.packedLength;
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const length = array[startingIndex++];
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const topRadius = array[startingIndex++];
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const bottomRadius = array[startingIndex++];
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const slices = array[startingIndex++];
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const offsetAttribute = array[startingIndex];
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if (!defined_default(result)) {
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scratchOptions.length = length;
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scratchOptions.topRadius = topRadius;
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scratchOptions.bottomRadius = bottomRadius;
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scratchOptions.slices = slices;
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scratchOptions.offsetAttribute = offsetAttribute === -1 ? void 0 : offsetAttribute;
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return new CylinderGeometry(scratchOptions);
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}
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result._vertexFormat = VertexFormat_default.clone(vertexFormat, result._vertexFormat);
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result._length = length;
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result._topRadius = topRadius;
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result._bottomRadius = bottomRadius;
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result._slices = slices;
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result._offsetAttribute = offsetAttribute === -1 ? void 0 : offsetAttribute;
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return result;
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};
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CylinderGeometry.createGeometry = function(cylinderGeometry) {
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let length = cylinderGeometry._length;
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const topRadius = cylinderGeometry._topRadius;
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const bottomRadius = cylinderGeometry._bottomRadius;
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const vertexFormat = cylinderGeometry._vertexFormat;
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const slices = cylinderGeometry._slices;
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if (length <= 0 || topRadius < 0 || bottomRadius < 0 || topRadius === 0 && bottomRadius === 0) {
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return;
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}
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const twoSlices = slices + slices;
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const threeSlices = slices + twoSlices;
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const numVertices = twoSlices + twoSlices;
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const positions = CylinderGeometryLibrary_default.computePositions(
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length,
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topRadius,
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bottomRadius,
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slices,
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true
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);
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const st = vertexFormat.st ? new Float32Array(numVertices * 2) : void 0;
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const normals = vertexFormat.normal ? new Float32Array(numVertices * 3) : void 0;
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const tangents = vertexFormat.tangent ? new Float32Array(numVertices * 3) : void 0;
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const bitangents = vertexFormat.bitangent ? new Float32Array(numVertices * 3) : void 0;
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let i;
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const computeNormal = vertexFormat.normal || vertexFormat.tangent || vertexFormat.bitangent;
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if (computeNormal) {
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const computeTangent = vertexFormat.tangent || vertexFormat.bitangent;
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let normalIndex = 0;
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let tangentIndex = 0;
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let bitangentIndex = 0;
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const theta = Math.atan2(bottomRadius - topRadius, length);
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const normal = normalScratch;
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normal.z = Math.sin(theta);
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const normalScale = Math.cos(theta);
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let tangent = tangentScratch;
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let bitangent = bitangentScratch;
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for (i = 0; i < slices; i++) {
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const angle = i / slices * Math_default.TWO_PI;
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const x = normalScale * Math.cos(angle);
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const y = normalScale * Math.sin(angle);
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if (computeNormal) {
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normal.x = x;
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normal.y = y;
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if (computeTangent) {
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tangent = Cartesian3_default.normalize(
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Cartesian3_default.cross(Cartesian3_default.UNIT_Z, normal, tangent),
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tangent
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);
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}
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if (vertexFormat.normal) {
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normals[normalIndex++] = normal.x;
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normals[normalIndex++] = normal.y;
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normals[normalIndex++] = normal.z;
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normals[normalIndex++] = normal.x;
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normals[normalIndex++] = normal.y;
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normals[normalIndex++] = normal.z;
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}
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if (vertexFormat.tangent) {
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tangents[tangentIndex++] = tangent.x;
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tangents[tangentIndex++] = tangent.y;
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tangents[tangentIndex++] = tangent.z;
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tangents[tangentIndex++] = tangent.x;
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tangents[tangentIndex++] = tangent.y;
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tangents[tangentIndex++] = tangent.z;
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}
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if (vertexFormat.bitangent) {
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bitangent = Cartesian3_default.normalize(
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Cartesian3_default.cross(normal, tangent, bitangent),
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bitangent
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);
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bitangents[bitangentIndex++] = bitangent.x;
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bitangents[bitangentIndex++] = bitangent.y;
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bitangents[bitangentIndex++] = bitangent.z;
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bitangents[bitangentIndex++] = bitangent.x;
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bitangents[bitangentIndex++] = bitangent.y;
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bitangents[bitangentIndex++] = bitangent.z;
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}
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}
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}
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for (i = 0; i < slices; i++) {
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if (vertexFormat.normal) {
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normals[normalIndex++] = 0;
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normals[normalIndex++] = 0;
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normals[normalIndex++] = -1;
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}
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if (vertexFormat.tangent) {
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tangents[tangentIndex++] = 1;
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tangents[tangentIndex++] = 0;
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tangents[tangentIndex++] = 0;
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}
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if (vertexFormat.bitangent) {
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bitangents[bitangentIndex++] = 0;
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bitangents[bitangentIndex++] = -1;
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bitangents[bitangentIndex++] = 0;
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}
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}
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for (i = 0; i < slices; i++) {
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if (vertexFormat.normal) {
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normals[normalIndex++] = 0;
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normals[normalIndex++] = 0;
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normals[normalIndex++] = 1;
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}
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if (vertexFormat.tangent) {
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tangents[tangentIndex++] = 1;
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tangents[tangentIndex++] = 0;
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tangents[tangentIndex++] = 0;
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}
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if (vertexFormat.bitangent) {
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bitangents[bitangentIndex++] = 0;
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bitangents[bitangentIndex++] = 1;
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bitangents[bitangentIndex++] = 0;
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}
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}
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}
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const numIndices = 12 * slices - 12;
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const indices = IndexDatatype_default.createTypedArray(numVertices, numIndices);
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let index = 0;
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let j = 0;
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for (i = 0; i < slices - 1; i++) {
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indices[index++] = j;
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indices[index++] = j + 2;
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indices[index++] = j + 3;
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indices[index++] = j;
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indices[index++] = j + 3;
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indices[index++] = j + 1;
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j += 2;
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}
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indices[index++] = twoSlices - 2;
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indices[index++] = 0;
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indices[index++] = 1;
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indices[index++] = twoSlices - 2;
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indices[index++] = 1;
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indices[index++] = twoSlices - 1;
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for (i = 1; i < slices - 1; i++) {
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indices[index++] = twoSlices + i + 1;
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indices[index++] = twoSlices + i;
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indices[index++] = twoSlices;
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}
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for (i = 1; i < slices - 1; i++) {
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indices[index++] = threeSlices;
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indices[index++] = threeSlices + i;
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indices[index++] = threeSlices + i + 1;
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}
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let textureCoordIndex = 0;
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if (vertexFormat.st) {
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const rad = Math.max(topRadius, bottomRadius);
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for (i = 0; i < numVertices; i++) {
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const position = Cartesian3_default.fromArray(positions, i * 3, positionScratch);
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st[textureCoordIndex++] = (position.x + rad) / (2 * rad);
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st[textureCoordIndex++] = (position.y + rad) / (2 * rad);
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}
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}
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const attributes = new GeometryAttributes_default();
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if (vertexFormat.position) {
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attributes.position = new GeometryAttribute_default({
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componentDatatype: ComponentDatatype_default.DOUBLE,
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componentsPerAttribute: 3,
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values: positions
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});
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}
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if (vertexFormat.normal) {
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attributes.normal = new GeometryAttribute_default({
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componentDatatype: ComponentDatatype_default.FLOAT,
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componentsPerAttribute: 3,
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values: normals
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});
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}
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if (vertexFormat.tangent) {
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attributes.tangent = new GeometryAttribute_default({
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componentDatatype: ComponentDatatype_default.FLOAT,
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componentsPerAttribute: 3,
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values: tangents
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});
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}
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if (vertexFormat.bitangent) {
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attributes.bitangent = new GeometryAttribute_default({
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componentDatatype: ComponentDatatype_default.FLOAT,
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componentsPerAttribute: 3,
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values: bitangents
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});
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}
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if (vertexFormat.st) {
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attributes.st = new GeometryAttribute_default({
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componentDatatype: ComponentDatatype_default.FLOAT,
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componentsPerAttribute: 2,
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values: st
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});
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}
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radiusScratch.x = length * 0.5;
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radiusScratch.y = Math.max(bottomRadius, topRadius);
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const boundingSphere = new BoundingSphere_default(
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Cartesian3_default.ZERO,
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Cartesian2_default.magnitude(radiusScratch)
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);
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if (defined_default(cylinderGeometry._offsetAttribute)) {
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length = positions.length;
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const offsetValue = cylinderGeometry._offsetAttribute === GeometryOffsetAttribute_default.NONE ? 0 : 1;
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const applyOffset = new Uint8Array(length / 3).fill(offsetValue);
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attributes.applyOffset = new GeometryAttribute_default({
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componentDatatype: ComponentDatatype_default.UNSIGNED_BYTE,
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componentsPerAttribute: 1,
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values: applyOffset
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});
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}
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return new Geometry_default({
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attributes,
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indices,
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primitiveType: PrimitiveType_default.TRIANGLES,
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boundingSphere,
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offsetAttribute: cylinderGeometry._offsetAttribute
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});
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};
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var unitCylinderGeometry;
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CylinderGeometry.getUnitCylinder = function() {
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if (!defined_default(unitCylinderGeometry)) {
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unitCylinderGeometry = CylinderGeometry.createGeometry(
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new CylinderGeometry({
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topRadius: 1,
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bottomRadius: 1,
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length: 1,
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vertexFormat: VertexFormat_default.POSITION_ONLY
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})
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);
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}
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return unitCylinderGeometry;
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};
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var CylinderGeometry_default = CylinderGeometry;
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export {
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CylinderGeometry_default
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};
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