import arrayRemoveDuplicates from './arrayRemoveDuplicates.js';
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import BoundingRectangle from './BoundingRectangle.js';
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import BoundingSphere from './BoundingSphere.js';
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import Cartesian2 from './Cartesian2.js';
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import Cartesian3 from './Cartesian3.js';
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import ComponentDatatype from './ComponentDatatype.js';
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import CornerType from './CornerType.js';
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import defaultValue from './defaultValue.js';
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import defined from './defined.js';
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import DeveloperError from './DeveloperError.js';
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import Ellipsoid from './Ellipsoid.js';
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import Geometry from './Geometry.js';
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import GeometryAttribute from './GeometryAttribute.js';
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import GeometryAttributes from './GeometryAttributes.js';
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import GeometryPipeline from './GeometryPipeline.js';
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import IndexDatatype from './IndexDatatype.js';
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import CesiumMath from './Math.js';
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import oneTimeWarning from './oneTimeWarning.js';
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import PolygonPipeline from './PolygonPipeline.js';
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import PolylineVolumeGeometryLibrary from './PolylineVolumeGeometryLibrary.js';
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import PrimitiveType from './PrimitiveType.js';
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import VertexFormat from './VertexFormat.js';
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import WindingOrder from './WindingOrder.js';
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function computeAttributes(combinedPositions, shape, boundingRectangle, vertexFormat) {
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var attributes = new GeometryAttributes();
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if (vertexFormat.position) {
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attributes.position = new GeometryAttribute({
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componentDatatype : ComponentDatatype.DOUBLE,
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componentsPerAttribute : 3,
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values : combinedPositions
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});
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}
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var shapeLength = shape.length;
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var vertexCount = combinedPositions.length / 3;
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var length = (vertexCount - shapeLength * 2) / (shapeLength * 2);
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var firstEndIndices = PolygonPipeline.triangulate(shape);
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var indicesCount = (length - 1) * (shapeLength) * 6 + firstEndIndices.length * 2;
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var indices = IndexDatatype.createTypedArray(vertexCount, indicesCount);
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var i, j;
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var ll, ul, ur, lr;
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var offset = shapeLength * 2;
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var index = 0;
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for (i = 0; i < length - 1; i++) {
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for (j = 0; j < shapeLength - 1; j++) {
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ll = j * 2 + i * shapeLength * 2;
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lr = ll + offset;
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ul = ll + 1;
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ur = ul + offset;
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indices[index++] = ul;
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indices[index++] = ll;
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indices[index++] = ur;
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indices[index++] = ur;
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indices[index++] = ll;
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indices[index++] = lr;
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}
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ll = shapeLength * 2 - 2 + i * shapeLength * 2;
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ul = ll + 1;
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ur = ul + offset;
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lr = ll + offset;
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indices[index++] = ul;
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indices[index++] = ll;
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indices[index++] = ur;
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indices[index++] = ur;
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indices[index++] = ll;
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indices[index++] = lr;
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}
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if (vertexFormat.st || vertexFormat.tangent || vertexFormat.bitangent) { // st required for tangent/bitangent calculation
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var st = new Float32Array(vertexCount * 2);
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var lengthSt = 1 / (length - 1);
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var heightSt = 1 / (boundingRectangle.height);
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var heightOffset = boundingRectangle.height / 2;
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var s, t;
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var stindex = 0;
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for (i = 0; i < length; i++) {
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s = i * lengthSt;
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t = heightSt * (shape[0].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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for (j = 1; j < shapeLength; j++) {
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t = heightSt * (shape[j].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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st[stindex++] = s;
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st[stindex++] = t;
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}
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t = heightSt * (shape[0].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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}
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for (j = 0; j < shapeLength; j++) {
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s = 0;
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t = heightSt * (shape[j].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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}
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for (j = 0; j < shapeLength; j++) {
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s = (length - 1) * lengthSt;
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t = heightSt * (shape[j].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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}
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attributes.st = new GeometryAttribute({
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componentDatatype : ComponentDatatype.FLOAT,
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componentsPerAttribute : 2,
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values : new Float32Array(st)
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});
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}
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var endOffset = vertexCount - shapeLength * 2;
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for (i = 0; i < firstEndIndices.length; i += 3) {
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var v0 = firstEndIndices[i] + endOffset;
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var v1 = firstEndIndices[i + 1] + endOffset;
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var v2 = firstEndIndices[i + 2] + endOffset;
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indices[index++] = v0;
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indices[index++] = v1;
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indices[index++] = v2;
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indices[index++] = v2 + shapeLength;
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indices[index++] = v1 + shapeLength;
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indices[index++] = v0 + shapeLength;
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}
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var geometry = new Geometry({
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attributes : attributes,
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indices : indices,
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boundingSphere : BoundingSphere.fromVertices(combinedPositions),
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primitiveType : PrimitiveType.TRIANGLES
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});
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if (vertexFormat.normal) {
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geometry = GeometryPipeline.computeNormal(geometry);
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}
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if (vertexFormat.tangent || vertexFormat.bitangent) {
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try {
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geometry = GeometryPipeline.computeTangentAndBitangent(geometry);
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} catch (e) {
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oneTimeWarning('polyline-volume-tangent-bitangent', 'Unable to compute tangents and bitangents for polyline volume geometry');
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//TODO https://github.com/CesiumGS/cesium/issues/3609
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}
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if (!vertexFormat.tangent) {
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geometry.attributes.tangent = undefined;
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}
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if (!vertexFormat.bitangent) {
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geometry.attributes.bitangent = undefined;
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}
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if (!vertexFormat.st) {
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geometry.attributes.st = undefined;
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}
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}
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return geometry;
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}
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/**
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* A description of a polyline with a volume (a 2D shape extruded along a polyline).
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*
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* @alias PolylineVolumeGeometry
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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 {Cartesian3[]} options.polylinePositions An array of {@link Cartesain3} positions that define the center of the polyline volume.
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* @param {Cartesian2[]} options.shapePositions An array of {@link Cartesian2} positions that define the shape to be extruded along the polyline
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* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
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* @param {Number} [options.granularity=CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
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* @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
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* @param {CornerType} [options.cornerType=CornerType.ROUNDED] Determines the style of the corners.
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*
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* @see PolylineVolumeGeometry#createGeometry
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*
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* @demo {@link https://sandcastle.cesium.com/index.html?src=Polyline%20Volume.html|Cesium Sandcastle Polyline Volume Demo}
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*
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* @example
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* function computeCircle(radius) {
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* var positions = [];
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* for (var i = 0; i < 360; i++) {
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* var radians = Cesium.Math.toRadians(i);
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* positions.push(new Cesium.Cartesian2(radius * Math.cos(radians), radius * Math.sin(radians)));
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* }
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* return positions;
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* }
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*
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* var volume = new Cesium.PolylineVolumeGeometry({
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* vertexFormat : Cesium.VertexFormat.POSITION_ONLY,
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* polylinePositions : Cesium.Cartesian3.fromDegreesArray([
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* -72.0, 40.0,
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* -70.0, 35.0
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* ]),
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* shapePositions : computeCircle(100000.0)
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* });
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*/
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function PolylineVolumeGeometry(options) {
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options = defaultValue(options, defaultValue.EMPTY_OBJECT);
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var positions = options.polylinePositions;
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var shape = options.shapePositions;
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//>>includeStart('debug', pragmas.debug);
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if (!defined(positions)) {
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throw new DeveloperError('options.polylinePositions is required.');
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}
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if (!defined(shape)) {
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throw new DeveloperError('options.shapePositions is required.');
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}
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//>>includeEnd('debug');
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this._positions = positions;
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this._shape = shape;
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this._ellipsoid = Ellipsoid.clone(defaultValue(options.ellipsoid, Ellipsoid.WGS84));
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this._cornerType = defaultValue(options.cornerType, CornerType.ROUNDED);
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this._vertexFormat = VertexFormat.clone(defaultValue(options.vertexFormat, VertexFormat.DEFAULT));
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this._granularity = defaultValue(options.granularity, CesiumMath.RADIANS_PER_DEGREE);
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this._workerName = 'createPolylineVolumeGeometry';
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var numComponents = 1 + positions.length * Cartesian3.packedLength;
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numComponents += 1 + shape.length * Cartesian2.packedLength;
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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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this.packedLength = numComponents + Ellipsoid.packedLength + VertexFormat.packedLength + 2;
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}
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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 {PolylineVolumeGeometry} 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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PolylineVolumeGeometry.pack = function(value, array, startingIndex) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(value)) {
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throw new DeveloperError('value is required');
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}
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if (!defined(array)) {
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throw new DeveloperError('array is required');
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}
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//>>includeEnd('debug');
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startingIndex = defaultValue(startingIndex, 0);
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var i;
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var positions = value._positions;
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var length = positions.length;
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array[startingIndex++] = length;
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for (i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
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Cartesian3.pack(positions[i], array, startingIndex);
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}
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var shape = value._shape;
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length = shape.length;
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array[startingIndex++] = length;
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for (i = 0; i < length; ++i, startingIndex += Cartesian2.packedLength) {
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Cartesian2.pack(shape[i], array, startingIndex);
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}
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Ellipsoid.pack(value._ellipsoid, array, startingIndex);
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startingIndex += Ellipsoid.packedLength;
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VertexFormat.pack(value._vertexFormat, array, startingIndex);
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startingIndex += VertexFormat.packedLength;
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array[startingIndex++] = value._cornerType;
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array[startingIndex] = value._granularity;
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return array;
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};
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var scratchEllipsoid = Ellipsoid.clone(Ellipsoid.UNIT_SPHERE);
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var scratchVertexFormat = new VertexFormat();
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var scratchOptions = {
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polylinePositions : undefined,
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shapePositions : undefined,
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ellipsoid : scratchEllipsoid,
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vertexFormat : scratchVertexFormat,
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cornerType : undefined,
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granularity : 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 {PolylineVolumeGeometry} [result] The object into which to store the result.
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* @returns {PolylineVolumeGeometry} The modified result parameter or a new PolylineVolumeGeometry instance if one was not provided.
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*/
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PolylineVolumeGeometry.unpack = function(array, startingIndex, result) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(array)) {
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throw new DeveloperError('array is required');
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}
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//>>includeEnd('debug');
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startingIndex = defaultValue(startingIndex, 0);
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var i;
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var length = array[startingIndex++];
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var positions = new Array(length);
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for (i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
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positions[i] = Cartesian3.unpack(array, startingIndex);
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}
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length = array[startingIndex++];
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var shape = new Array(length);
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for (i = 0; i < length; ++i, startingIndex += Cartesian2.packedLength) {
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shape[i] = Cartesian2.unpack(array, startingIndex);
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}
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var ellipsoid = Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
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startingIndex += Ellipsoid.packedLength;
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var vertexFormat = VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
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startingIndex += VertexFormat.packedLength;
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var cornerType = array[startingIndex++];
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var granularity = array[startingIndex];
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if (!defined(result)) {
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scratchOptions.polylinePositions = positions;
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scratchOptions.shapePositions = shape;
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scratchOptions.cornerType = cornerType;
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scratchOptions.granularity = granularity;
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return new PolylineVolumeGeometry(scratchOptions);
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}
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result._positions = positions;
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result._shape = shape;
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result._ellipsoid = Ellipsoid.clone(ellipsoid, result._ellipsoid);
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result._vertexFormat = VertexFormat.clone(vertexFormat, result._vertexFormat);
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result._cornerType = cornerType;
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result._granularity = granularity;
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return result;
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};
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var brScratch = new BoundingRectangle();
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/**
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* Computes the geometric representation of a polyline with a volume, including its vertices, indices, and a bounding sphere.
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*
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* @param {PolylineVolumeGeometry} polylineVolumeGeometry A description of the polyline volume.
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* @returns {Geometry|undefined} The computed vertices and indices.
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*/
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PolylineVolumeGeometry.createGeometry = function(polylineVolumeGeometry) {
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var positions = polylineVolumeGeometry._positions;
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var cleanPositions = arrayRemoveDuplicates(positions, Cartesian3.equalsEpsilon);
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var shape2D = polylineVolumeGeometry._shape;
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shape2D = PolylineVolumeGeometryLibrary.removeDuplicatesFromShape(shape2D);
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if (cleanPositions.length < 2 || shape2D.length < 3) {
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return undefined;
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}
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if (PolygonPipeline.computeWindingOrder2D(shape2D) === WindingOrder.CLOCKWISE) {
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shape2D.reverse();
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}
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var boundingRectangle = BoundingRectangle.fromPoints(shape2D, brScratch);
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var computedPositions = PolylineVolumeGeometryLibrary.computePositions(cleanPositions, shape2D, boundingRectangle, polylineVolumeGeometry, true);
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return computeAttributes(computedPositions, shape2D, boundingRectangle, polylineVolumeGeometry._vertexFormat);
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};
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export default PolylineVolumeGeometry;
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