/node_modules/ol3-cesium/ol3/src/ol/geom/multipolygon.js
https://gitlab.com/wanderinghogan/cesium-heatmap · JavaScript · 434 lines · 258 code · 52 blank · 124 comment · 47 complexity · 0347ab0fce8df218e9e4b4e58711b290 MD5 · raw file
- goog.provide('ol.geom.MultiPolygon');
- goog.require('ol');
- goog.require('ol.array');
- goog.require('ol.extent');
- goog.require('ol.geom.GeometryLayout');
- goog.require('ol.geom.GeometryType');
- goog.require('ol.geom.MultiPoint');
- goog.require('ol.geom.Polygon');
- goog.require('ol.geom.SimpleGeometry');
- goog.require('ol.geom.flat.area');
- goog.require('ol.geom.flat.center');
- goog.require('ol.geom.flat.closest');
- goog.require('ol.geom.flat.contains');
- goog.require('ol.geom.flat.deflate');
- goog.require('ol.geom.flat.inflate');
- goog.require('ol.geom.flat.interiorpoint');
- goog.require('ol.geom.flat.intersectsextent');
- goog.require('ol.geom.flat.orient');
- goog.require('ol.geom.flat.simplify');
- /**
- * @classdesc
- * Multi-polygon geometry.
- *
- * @constructor
- * @extends {ol.geom.SimpleGeometry}
- * @param {Array.<Array.<Array.<ol.Coordinate>>>} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout=} opt_layout Layout.
- * @api stable
- */
- ol.geom.MultiPolygon = function(coordinates, opt_layout) {
- ol.geom.SimpleGeometry.call(this);
- /**
- * @type {Array.<Array.<number>>}
- * @private
- */
- this.endss_ = [];
- /**
- * @private
- * @type {number}
- */
- this.flatInteriorPointsRevision_ = -1;
- /**
- * @private
- * @type {Array.<number>}
- */
- this.flatInteriorPoints_ = null;
- /**
- * @private
- * @type {number}
- */
- this.maxDelta_ = -1;
- /**
- * @private
- * @type {number}
- */
- this.maxDeltaRevision_ = -1;
- /**
- * @private
- * @type {number}
- */
- this.orientedRevision_ = -1;
- /**
- * @private
- * @type {Array.<number>}
- */
- this.orientedFlatCoordinates_ = null;
- this.setCoordinates(coordinates, opt_layout);
- };
- ol.inherits(ol.geom.MultiPolygon, ol.geom.SimpleGeometry);
- /**
- * Append the passed polygon to this multipolygon.
- * @param {ol.geom.Polygon} polygon Polygon.
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.appendPolygon = function(polygon) {
- goog.DEBUG && console.assert(polygon.getLayout() == this.layout,
- 'layout of polygon should match layout');
- /** @type {Array.<number>} */
- var ends;
- if (!this.flatCoordinates) {
- this.flatCoordinates = polygon.getFlatCoordinates().slice();
- ends = polygon.getEnds().slice();
- this.endss_.push();
- } else {
- var offset = this.flatCoordinates.length;
- ol.array.extend(this.flatCoordinates, polygon.getFlatCoordinates());
- ends = polygon.getEnds().slice();
- var i, ii;
- for (i = 0, ii = ends.length; i < ii; ++i) {
- ends[i] += offset;
- }
- }
- this.endss_.push(ends);
- this.changed();
- };
- /**
- * Make a complete copy of the geometry.
- * @return {!ol.geom.MultiPolygon} Clone.
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.clone = function() {
- var multiPolygon = new ol.geom.MultiPolygon(null);
- var len = this.endss_.length;
- var newEndss = new Array(len);
- for (var i = 0; i < len; ++i) {
- newEndss[i] = this.endss_[i].slice();
- }
- multiPolygon.setFlatCoordinates(
- this.layout, this.flatCoordinates.slice(), newEndss);
- return multiPolygon;
- };
- /**
- * @inheritDoc
- */
- ol.geom.MultiPolygon.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) {
- if (minSquaredDistance <
- ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
- return minSquaredDistance;
- }
- if (this.maxDeltaRevision_ != this.getRevision()) {
- this.maxDelta_ = Math.sqrt(ol.geom.flat.closest.getssMaxSquaredDelta(
- this.flatCoordinates, 0, this.endss_, this.stride, 0));
- this.maxDeltaRevision_ = this.getRevision();
- }
- return ol.geom.flat.closest.getssClosestPoint(
- this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride,
- this.maxDelta_, true, x, y, closestPoint, minSquaredDistance);
- };
- /**
- * @inheritDoc
- */
- ol.geom.MultiPolygon.prototype.containsXY = function(x, y) {
- return ol.geom.flat.contains.linearRingssContainsXY(
- this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride, x, y);
- };
- /**
- * Return the area of the multipolygon on projected plane.
- * @return {number} Area (on projected plane).
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.getArea = function() {
- return ol.geom.flat.area.linearRingss(
- this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride);
- };
- /**
- * Get the coordinate array for this geometry. This array has the structure
- * of a GeoJSON coordinate array for multi-polygons.
- *
- * @param {boolean=} opt_right Orient coordinates according to the right-hand
- * rule (counter-clockwise for exterior and clockwise for interior rings).
- * If `false`, coordinates will be oriented according to the left-hand rule
- * (clockwise for exterior and counter-clockwise for interior rings).
- * By default, coordinate orientation will depend on how the geometry was
- * constructed.
- * @return {Array.<Array.<Array.<ol.Coordinate>>>} Coordinates.
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.getCoordinates = function(opt_right) {
- var flatCoordinates;
- if (opt_right !== undefined) {
- flatCoordinates = this.getOrientedFlatCoordinates().slice();
- ol.geom.flat.orient.orientLinearRingss(
- flatCoordinates, 0, this.endss_, this.stride, opt_right);
- } else {
- flatCoordinates = this.flatCoordinates;
- }
- return ol.geom.flat.inflate.coordinatesss(
- flatCoordinates, 0, this.endss_, this.stride);
- };
- /**
- * @return {Array.<Array.<number>>} Endss.
- */
- ol.geom.MultiPolygon.prototype.getEndss = function() {
- return this.endss_;
- };
- /**
- * @return {Array.<number>} Flat interior points.
- */
- ol.geom.MultiPolygon.prototype.getFlatInteriorPoints = function() {
- if (this.flatInteriorPointsRevision_ != this.getRevision()) {
- var flatCenters = ol.geom.flat.center.linearRingss(
- this.flatCoordinates, 0, this.endss_, this.stride);
- this.flatInteriorPoints_ = ol.geom.flat.interiorpoint.linearRingss(
- this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride,
- flatCenters);
- this.flatInteriorPointsRevision_ = this.getRevision();
- }
- return this.flatInteriorPoints_;
- };
- /**
- * Return the interior points as {@link ol.geom.MultiPoint multipoint}.
- * @return {ol.geom.MultiPoint} Interior points.
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.getInteriorPoints = function() {
- var interiorPoints = new ol.geom.MultiPoint(null);
- interiorPoints.setFlatCoordinates(ol.geom.GeometryLayout.XY,
- this.getFlatInteriorPoints().slice());
- return interiorPoints;
- };
- /**
- * @return {Array.<number>} Oriented flat coordinates.
- */
- ol.geom.MultiPolygon.prototype.getOrientedFlatCoordinates = function() {
- if (this.orientedRevision_ != this.getRevision()) {
- var flatCoordinates = this.flatCoordinates;
- if (ol.geom.flat.orient.linearRingssAreOriented(
- flatCoordinates, 0, this.endss_, this.stride)) {
- this.orientedFlatCoordinates_ = flatCoordinates;
- } else {
- this.orientedFlatCoordinates_ = flatCoordinates.slice();
- this.orientedFlatCoordinates_.length =
- ol.geom.flat.orient.orientLinearRingss(
- this.orientedFlatCoordinates_, 0, this.endss_, this.stride);
- }
- this.orientedRevision_ = this.getRevision();
- }
- return this.orientedFlatCoordinates_;
- };
- /**
- * @inheritDoc
- */
- ol.geom.MultiPolygon.prototype.getSimplifiedGeometryInternal = function(squaredTolerance) {
- var simplifiedFlatCoordinates = [];
- var simplifiedEndss = [];
- simplifiedFlatCoordinates.length = ol.geom.flat.simplify.quantizess(
- this.flatCoordinates, 0, this.endss_, this.stride,
- Math.sqrt(squaredTolerance),
- simplifiedFlatCoordinates, 0, simplifiedEndss);
- var simplifiedMultiPolygon = new ol.geom.MultiPolygon(null);
- simplifiedMultiPolygon.setFlatCoordinates(
- ol.geom.GeometryLayout.XY, simplifiedFlatCoordinates, simplifiedEndss);
- return simplifiedMultiPolygon;
- };
- /**
- * Return the polygon at the specified index.
- * @param {number} index Index.
- * @return {ol.geom.Polygon} Polygon.
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.getPolygon = function(index) {
- goog.DEBUG && console.assert(0 <= index && index < this.endss_.length,
- 'index should be in between 0 and the length of this.endss_');
- if (index < 0 || this.endss_.length <= index) {
- return null;
- }
- var offset;
- if (index === 0) {
- offset = 0;
- } else {
- var prevEnds = this.endss_[index - 1];
- offset = prevEnds[prevEnds.length - 1];
- }
- var ends = this.endss_[index].slice();
- var end = ends[ends.length - 1];
- if (offset !== 0) {
- var i, ii;
- for (i = 0, ii = ends.length; i < ii; ++i) {
- ends[i] -= offset;
- }
- }
- var polygon = new ol.geom.Polygon(null);
- polygon.setFlatCoordinates(
- this.layout, this.flatCoordinates.slice(offset, end), ends);
- return polygon;
- };
- /**
- * Return the polygons of this multipolygon.
- * @return {Array.<ol.geom.Polygon>} Polygons.
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.getPolygons = function() {
- var layout = this.layout;
- var flatCoordinates = this.flatCoordinates;
- var endss = this.endss_;
- var polygons = [];
- var offset = 0;
- var i, ii, j, jj;
- for (i = 0, ii = endss.length; i < ii; ++i) {
- var ends = endss[i].slice();
- var end = ends[ends.length - 1];
- if (offset !== 0) {
- for (j = 0, jj = ends.length; j < jj; ++j) {
- ends[j] -= offset;
- }
- }
- var polygon = new ol.geom.Polygon(null);
- polygon.setFlatCoordinates(
- layout, flatCoordinates.slice(offset, end), ends);
- polygons.push(polygon);
- offset = end;
- }
- return polygons;
- };
- /**
- * @inheritDoc
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.getType = function() {
- return ol.geom.GeometryType.MULTI_POLYGON;
- };
- /**
- * @inheritDoc
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.intersectsExtent = function(extent) {
- return ol.geom.flat.intersectsextent.linearRingss(
- this.getOrientedFlatCoordinates(), 0, this.endss_, this.stride, extent);
- };
- /**
- * Set the coordinates of the multipolygon.
- * @param {Array.<Array.<Array.<ol.Coordinate>>>} coordinates Coordinates.
- * @param {ol.geom.GeometryLayout=} opt_layout Layout.
- * @api stable
- */
- ol.geom.MultiPolygon.prototype.setCoordinates = function(coordinates, opt_layout) {
- if (!coordinates) {
- this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.endss_);
- } else {
- this.setLayout(opt_layout, coordinates, 3);
- if (!this.flatCoordinates) {
- this.flatCoordinates = [];
- }
- var endss = ol.geom.flat.deflate.coordinatesss(
- this.flatCoordinates, 0, coordinates, this.stride, this.endss_);
- if (endss.length === 0) {
- this.flatCoordinates.length = 0;
- } else {
- var lastEnds = endss[endss.length - 1];
- this.flatCoordinates.length = lastEnds.length === 0 ?
- 0 : lastEnds[lastEnds.length - 1];
- }
- this.changed();
- }
- };
- /**
- * @param {ol.geom.GeometryLayout} layout Layout.
- * @param {Array.<number>} flatCoordinates Flat coordinates.
- * @param {Array.<Array.<number>>} endss Endss.
- */
- ol.geom.MultiPolygon.prototype.setFlatCoordinates = function(layout, flatCoordinates, endss) {
- goog.DEBUG && console.assert(endss, 'endss must be truthy');
- if (!flatCoordinates || flatCoordinates.length === 0) {
- goog.DEBUG && console.assert(endss.length === 0, 'the length of endss should be 0');
- } else {
- goog.DEBUG && console.assert(endss.length > 0, 'endss cannot be an empty array');
- var ends = endss[endss.length - 1];
- goog.DEBUG && console.assert(flatCoordinates.length == ends[ends.length - 1],
- 'the length of flatCoordinates should be the last value of ends');
- }
- this.setFlatCoordinatesInternal(layout, flatCoordinates);
- this.endss_ = endss;
- this.changed();
- };
- /**
- * @param {Array.<ol.geom.Polygon>} polygons Polygons.
- */
- ol.geom.MultiPolygon.prototype.setPolygons = function(polygons) {
- var layout = this.getLayout();
- var flatCoordinates = [];
- var endss = [];
- var i, ii, ends;
- for (i = 0, ii = polygons.length; i < ii; ++i) {
- var polygon = polygons[i];
- if (i === 0) {
- layout = polygon.getLayout();
- } else {
- // FIXME better handle the case of non-matching layouts
- goog.DEBUG && console.assert(polygon.getLayout() == layout,
- 'layout of polygon should be layout');
- }
- var offset = flatCoordinates.length;
- ends = polygon.getEnds();
- var j, jj;
- for (j = 0, jj = ends.length; j < jj; ++j) {
- ends[j] += offset;
- }
- ol.array.extend(flatCoordinates, polygon.getFlatCoordinates());
- endss.push(ends);
- }
- this.setFlatCoordinates(layout, flatCoordinates, endss);
- };