1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for * full list of contributors). Published under the Clear BSD license. * See http://svn.openlayers.org/trunk/openlayers/license.txt for the * full text of the license. */ /** * @requires OpenLayers/Filter.js * @requires OpenLayers/Console.js */ /** * Class: OpenLayers.Filter.Spatial * This class represents a spatial filter. * Currently implemented: BBOX, DWithin and Intersects * * Inherits from * - <OpenLayers.Filter> */ OpenLayers.Filter.Spatial = OpenLayers.Class(OpenLayers.Filter, { /** * APIProperty: type * {String} Type of spatial filter. * * The type should be one of: * - OpenLayers.Filter.Spatial.BBOX * - OpenLayers.Filter.Spatial.INTERSECTS * - OpenLayers.Filter.Spatial.DWITHIN * - OpenLayers.Filter.Spatial.WITHIN * - OpenLayers.Filter.Spatial.CONTAINS */ type: null, /** * APIProperty: property * {String} Name of the context property to compare. */ property: null, /** * APIProperty: value * {<OpenLayers.Bounds> || <OpenLayers.Geometry>} The bounds or geometry * to be used by the filter. Use bounds for BBOX filters and geometry * for INTERSECTS or DWITHIN filters. */ value: null, /** * APIProperty: distance * {Number} The distance to use in a DWithin spatial filter. */ distance: null, /** * APIProperty: distanceUnits * {String} The units to use for the distance, e.g. 'm'. */ distanceUnits: null, /** * Constructor: OpenLayers.Filter.Spatial * Creates a spatial filter. * * Parameters: * options - {Object} An optional object with properties to set on the * filter. * * Returns: * {<OpenLayers.Filter.Spatial>} */ initialize: function(options) { OpenLayers.Filter.prototype.initialize.apply(this, [options]); }, /** * Method: evaluate * Evaluates this filter for a specific feature. * * Parameters: * feature - {<OpenLayers.Feature.Vector>} feature to apply the filter to. * * Returns: * {Boolean} The feature meets filter criteria. */ evaluate: function(feature) { var intersect = false; switch(this.type) { case OpenLayers.Filter.Spatial.BBOX: case OpenLayers.Filter.Spatial.INTERSECTS: if(feature.geometry) { var geom = this.value; if(this.value.CLASS_NAME == "OpenLayers.Bounds") { geom = this.value.toGeometry(); } if(feature.geometry.intersects(geom)) { intersect = true; } } break; default: OpenLayers.Console.error( OpenLayers.i18n("filterEvaluateNotImplemented")); break; } return intersect; }, /** * APIMethod: clone * Clones this filter. * * Returns: * {<OpenLayers.Filter.Spatial>} Clone of this filter. */ clone: function() { var options = OpenLayers.Util.applyDefaults({ value: this.value && this.value.clone && this.value.clone() }, this); return new OpenLayers.Filter.Spatial(options); }, CLASS_NAME: "OpenLayers.Filter.Spatial" }); OpenLayers.Filter.Spatial.BBOX = "BBOX"; OpenLayers.Filter.Spatial.INTERSECTS = "INTERSECTS"; OpenLayers.Filter.Spatial.DWITHIN = "DWITHIN"; OpenLayers.Filter.Spatial.WITHIN = "WITHIN"; OpenLayers.Filter.Spatial.CONTAINS = "CONTAINS"; |