295 lines
14 KiB
JavaScript
295 lines
14 KiB
JavaScript
/**
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* Cesium - https://github.com/CesiumGS/cesium
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*
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* Copyright 2011-2020 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/master/LICENSE.md for full licensing details.
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*/
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define(['./when-c2e8ef35', './Check-c4f3a3fc', './Math-a06249ed', './Cartesian2-a4e73c05', './Transforms-533d1994', './RuntimeError-6122571f', './WebGLConstants-4ae0db90', './ComponentDatatype-762ab5b7', './GeometryAttribute-47fb6f1a', './GeometryAttributes-57608efc', './IndexDatatype-755cb3fd', './IntersectionTests-11682642', './Plane-beebe18b', './arrayRemoveDuplicates-8d93d3b4', './BoundingRectangle-a263ff52', './EllipsoidTangentPlane-cf837d4c', './EllipsoidRhumbLine-33694923', './PolygonPipeline-99528590', './PolylineVolumeGeometryLibrary-dab0a545', './EllipsoidGeodesic-0b95fd8b', './PolylinePipeline-6b7c02de'], function (when, Check, _Math, Cartesian2, Transforms, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, GeometryAttributes, IndexDatatype, IntersectionTests, Plane, arrayRemoveDuplicates, BoundingRectangle, EllipsoidTangentPlane, EllipsoidRhumbLine, PolygonPipeline, PolylineVolumeGeometryLibrary, EllipsoidGeodesic, PolylinePipeline) { 'use strict';
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function computeAttributes(positions, shape) {
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var attributes = new GeometryAttributes.GeometryAttributes();
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attributes.position = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE,
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componentsPerAttribute : 3,
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values : positions
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});
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var shapeLength = shape.length;
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var vertexCount = attributes.position.values.length / 3;
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var positionLength = positions.length / 3;
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var shapeCount = positionLength / shapeLength;
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var indices = IndexDatatype.IndexDatatype.createTypedArray(vertexCount, 2 * shapeLength * (shapeCount + 1));
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var i, j;
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var index = 0;
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i = 0;
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var offset = i * shapeLength;
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for (j = 0; j < shapeLength - 1; j++) {
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indices[index++] = j + offset;
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indices[index++] = j + offset + 1;
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}
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indices[index++] = shapeLength - 1 + offset;
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indices[index++] = offset;
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i = shapeCount - 1;
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offset = i * shapeLength;
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for (j = 0; j < shapeLength - 1; j++) {
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indices[index++] = j + offset;
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indices[index++] = j + offset + 1;
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}
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indices[index++] = shapeLength - 1 + offset;
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indices[index++] = offset;
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for (i = 0; i < shapeCount - 1; i++) {
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var firstOffset = shapeLength * i;
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var secondOffset = firstOffset + shapeLength;
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for (j = 0; j < shapeLength; j++) {
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indices[index++] = j + firstOffset;
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indices[index++] = j + secondOffset;
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}
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}
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var geometry = new GeometryAttribute.Geometry({
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attributes : attributes,
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indices : IndexDatatype.IndexDatatype.createTypedArray(vertexCount, indices),
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boundingSphere : Transforms.BoundingSphere.fromVertices(positions),
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primitiveType : GeometryAttribute.PrimitiveType.LINES
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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 PolylineVolumeOutlineGeometry
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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 positions that define the center of the polyline volume.
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* @param {Cartesian2[]} options.shapePositions An array of 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 {CornerType} [options.cornerType=CornerType.ROUNDED] Determines the style of the corners.
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*
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* @see PolylineVolumeOutlineGeometry#createGeometry
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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 volumeOutline = new Cesium.PolylineVolumeOutlineGeometry({
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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 PolylineVolumeOutlineGeometry(options) {
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options = when.defaultValue(options, when.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 (!when.defined(positions)) {
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throw new Check.DeveloperError('options.polylinePositions is required.');
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}
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if (!when.defined(shape)) {
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throw new Check.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 = Cartesian2.Ellipsoid.clone(when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84));
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this._cornerType = when.defaultValue(options.cornerType, PolylineVolumeGeometryLibrary.CornerType.ROUNDED);
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this._granularity = when.defaultValue(options.granularity, _Math.CesiumMath.RADIANS_PER_DEGREE);
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this._workerName = 'createPolylineVolumeOutlineGeometry';
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var numComponents = 1 + positions.length * Cartesian2.Cartesian3.packedLength;
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numComponents += 1 + shape.length * Cartesian2.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 + Cartesian2.Ellipsoid.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 {PolylineVolumeOutlineGeometry} 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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PolylineVolumeOutlineGeometry.pack = function(value, array, startingIndex) {
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//>>includeStart('debug', pragmas.debug);
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if (!when.defined(value)) {
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throw new Check.DeveloperError('value is required');
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}
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if (!when.defined(array)) {
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throw new Check.DeveloperError('array is required');
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}
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//>>includeEnd('debug');
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startingIndex = when.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 += Cartesian2.Cartesian3.packedLength) {
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Cartesian2.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.Cartesian2.packedLength) {
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Cartesian2.Cartesian2.pack(shape[i], array, startingIndex);
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}
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Cartesian2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
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startingIndex += Cartesian2.Ellipsoid.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 = Cartesian2.Ellipsoid.clone(Cartesian2.Ellipsoid.UNIT_SPHERE);
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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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height : undefined,
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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 {PolylineVolumeOutlineGeometry} [result] The object into which to store the result.
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* @returns {PolylineVolumeOutlineGeometry} The modified result parameter or a new PolylineVolumeOutlineGeometry instance if one was not provided.
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*/
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PolylineVolumeOutlineGeometry.unpack = function(array, startingIndex, result) {
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//>>includeStart('debug', pragmas.debug);
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if (!when.defined(array)) {
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throw new Check.DeveloperError('array is required');
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}
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//>>includeEnd('debug');
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startingIndex = when.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 += Cartesian2.Cartesian3.packedLength) {
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positions[i] = Cartesian2.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.Cartesian2.packedLength) {
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shape[i] = Cartesian2.Cartesian2.unpack(array, startingIndex);
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}
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var ellipsoid = Cartesian2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
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startingIndex += Cartesian2.Ellipsoid.packedLength;
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var cornerType = array[startingIndex++];
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var granularity = array[startingIndex];
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if (!when.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 PolylineVolumeOutlineGeometry(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 = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
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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.BoundingRectangle();
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/**
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* Computes the geometric representation of the outline of a polyline with a volume, including its vertices, indices, and a bounding sphere.
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*
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* @param {PolylineVolumeOutlineGeometry} polylineVolumeOutlineGeometry A description of the polyline volume outline.
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* @returns {Geometry|undefined} The computed vertices and indices.
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*/
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PolylineVolumeOutlineGeometry.createGeometry = function(polylineVolumeOutlineGeometry) {
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var positions = polylineVolumeOutlineGeometry._positions;
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var cleanPositions = arrayRemoveDuplicates.arrayRemoveDuplicates(positions, Cartesian2.Cartesian3.equalsEpsilon);
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var shape2D = polylineVolumeOutlineGeometry._shape;
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shape2D = PolylineVolumeGeometryLibrary.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.PolygonPipeline.computeWindingOrder2D(shape2D) === PolygonPipeline.WindingOrder.CLOCKWISE) {
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shape2D.reverse();
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}
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var boundingRectangle = BoundingRectangle.BoundingRectangle.fromPoints(shape2D, brScratch);
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var computedPositions = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.computePositions(cleanPositions, shape2D, boundingRectangle, polylineVolumeOutlineGeometry, false);
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return computeAttributes(computedPositions, shape2D);
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};
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function createPolylineVolumeOutlineGeometry(polylineVolumeOutlineGeometry, offset) {
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if (when.defined(offset)) {
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polylineVolumeOutlineGeometry = PolylineVolumeOutlineGeometry.unpack(polylineVolumeOutlineGeometry, offset);
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}
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polylineVolumeOutlineGeometry._ellipsoid = Cartesian2.Ellipsoid.clone(polylineVolumeOutlineGeometry._ellipsoid);
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return PolylineVolumeOutlineGeometry.createGeometry(polylineVolumeOutlineGeometry);
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}
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return createPolylineVolumeOutlineGeometry;
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});
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//# sourceMappingURL=createPolylineVolumeOutlineGeometry.js.map
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