3948913bfc
has been done in the NaturalDocs branch back to trunk. Thanks to everyone who helped out in making this happen. (I could list people, but the list would be long, and I'm already mentally on vacation.) git-svn-id: http://svn.openlayers.org/trunk/openlayers@3545 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
67 lines
2.1 KiB
JavaScript
67 lines
2.1 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under a modified BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
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* for the full text of the license. */
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/**
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* @requires OpenLayers/Geometry/Collection.js
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*
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* Class: OpenLayers.Geometry.Polygon
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* Polygon is a collection of Geometry.LinearRings.
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*
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* Inherits from:
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* - <OpenLayers.Geometry.Collection>
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* - <OpenLayers.Geometry>
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*/
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OpenLayers.Geometry.Polygon = OpenLayers.Class.create();
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OpenLayers.Geometry.Polygon.prototype =
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OpenLayers.Class.inherit(OpenLayers.Geometry.Collection, {
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/**
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* Property: componentTypes
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* {Array(String)} An array of class names representing the types of
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* components that the collection can include. A null value means the
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* component types are not restricted.
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*/
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componentTypes: ["OpenLayers.Geometry.LinearRing"],
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/**
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* Constructor: OpenLayers.Geometry.Polygon
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* Constructor for a Polygon geometry.
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* The first ring (this.component[0])is the outer bounds of the polygon and
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* all subsequent rings (this.component[1-n]) are internal holes.
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*
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*
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* Parameters:
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* components - Array({<OpenLayers.Geometry.LinearRing>})
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*/
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initialize: function(components) {
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OpenLayers.Geometry.Collection.prototype.initialize.apply(this,
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arguments);
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},
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/**
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* APIMethod: getArea
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* Calculated by subtracting the areas of the internal holes from the
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* area of the outer hole.
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*
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* Return:
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* {float} The area of the geometry
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*/
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getArea: function() {
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var area = 0.0;
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if ( this.components && (this.components.length > 0)) {
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area += Math.abs(this.components[0].getArea());
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for (var i = 1; i < this.components.length; i++) {
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area -= Math.abs(this.components[i].getArea());
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}
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}
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return area;
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},
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/**
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* Constant: CLASS_NAME
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* {String} Name of class.
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*/
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CLASS_NAME: "OpenLayers.Geometry.Polygon"
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});
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