goog.provide('ol.geom.MultiPolygon');
goog.require('goog.asserts');
goog.require('ol.array');
goog.require('ol.extent');
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.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) {
goog.base(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,
/** @type {ol.geom.GeometryLayout|undefined} */ (opt_layout));
};
goog.inherits(ol.geom.MultiPolygon, ol.geom.SimpleGeometry);
/**
* @param {ol.geom.Polygon} polygon Polygon.
* @api stable
*/
ol.geom.MultiPolygon.prototype.appendPolygon = function(polygon) {
goog.asserts.assert(polygon.getLayout() == this.layout);
/** @type {Array.<number>} */
var ends;
if (goog.isNull(this.flatCoordinates)) {
this.flatCoordinates = polygon.getFlatCoordinates().slice();
ends = polygon.getEnds().slice();
this.endss_.push();
} else {
var offset = this.flatCoordinates.length;
ol.array.safeExtend(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.dispatchChangeEvent();
};
/**
* 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);
multiPolygon.setFlatCoordinates(
this.layout, this.flatCoordinates.slice(), this.endss_.slice());
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 {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);
};
/**
* @return {Array.<Array.<Array.<ol.Coordinate>>>} Coordinates.
* @api stable
*/
ol.geom.MultiPolygon.prototype.getCoordinates = function() {
return ol.geom.flat.inflate.coordinatesss(
this.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 {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.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;
};
/**
* @param {number} index Index.
* @return {ol.geom.Polygon} Polygon.
* @api stable
*/
ol.geom.MultiPolygon.prototype.getPolygon = function(index) {
goog.asserts.assert(0 <= index && index < this.endss_.length);
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 {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;
};
/**
* @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 (goog.isNull(coordinates)) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null, this.endss_);
} else {
this.setLayout(opt_layout, coordinates, 3);
if (goog.isNull(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.dispatchChangeEvent();
}
};
/**
* @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.asserts.assert(!goog.isNull(endss));
if (goog.isNull(flatCoordinates) || flatCoordinates.length === 0) {
goog.asserts.assert(endss.length === 0);
} else {
goog.asserts.assert(endss.length > 0);
var ends = endss[endss.length - 1];
goog.asserts.assert(flatCoordinates.length == ends[ends.length - 1]);
}
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.endss_ = endss;
this.dispatchChangeEvent();
};
/**
* @param {Array.<ol.geom.Polygon>} polygons Polygons.
*/
ol.geom.MultiPolygon.prototype.setPolygons = function(polygons) {
var layout = ol.geom.GeometryLayout.XY;
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.asserts.assert(polygon.getLayout() == 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.safeExtend(flatCoordinates, polygon.getFlatCoordinates());
endss.push(ends);
}
this.setFlatCoordinates(layout, flatCoordinates, endss);
};
OpenLayers 3