Point.js
2.8 KB
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
/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
* See http://svn.openlayers.org/trunk/openlayers/release-license.txt
* for the full text of the license. */
/**
* @class
*
* @requires OpenLayers/Geometry.js
*/
OpenLayers.Geometry.Point = OpenLayers.Class.create();
OpenLayers.Geometry.Point.prototype =
OpenLayers.Class.inherit(OpenLayers.Geometry, {
/** @type float */
x: null,
/** @type float */
y: null,
/**
* @constructor
*
* @param {float} x
* @param {float} y
*/
initialize: function(x, y) {
OpenLayers.Geometry.prototype.initialize.apply(this, arguments);
this.x = parseFloat(x);
this.y = parseFloat(y);
},
/**
* @returns An exact clone of this OpenLayers.Geometry.Point
* @type OpenLayers.Geometry.Point
*/
clone: function(obj) {
if (obj == null) {
obj = new OpenLayers.Geometry.Point(this.x, this.y);
}
// catch any randomly tagged-on properties
OpenLayers.Util.applyDefaults(obj, this);
return obj;
},
/** Create a new Bounds based on the lon/lat
*
*/
calculateBounds: function () {
this.bounds = new OpenLayers.Bounds(this.x, this.y,
this.x, this.y);
},
/**
* @param {OpenLayers.Geometry.Point} point
*/
distanceTo: function(point) {
var distance = 0.0;
if ( (this.x != null) && (this.y != null) &&
(point != null) && (point.x != null) && (point.y != null) ) {
var dx2 = Math.pow(this.x - point.x, 2);
var dy2 = Math.pow(this.y - point.y, 2);
distance = Math.sqrt( dx2 + dy2 );
}
return distance;
},
/**
* @param {OpenLayers.Geometry} xy
* @returns Boolean value indicating whether the passed-in
* OpenLayers.Geometryobject has the same components as this
* note that if ll passed in is null, returns false
*
* @type bool
*/
equals:function(geom) {
var equals = false;
if (geom != null) {
equals = ((this.x == geom.x && this.y == geom.y) ||
(isNaN(this.x) && isNaN(this.y) && isNaN(geom.x) && isNaN(geom.y)));
}
return equals;
},
/**
* @return Shortened String representation of Point object.
* (ex. <i>"5, 42"</i>)
* @type String
*/
toShortString: function() {
return (this.x + ", " + this.y);
},
/**
* Moves a point in place
* @param {Float} x
* @param {Float} y
*/
move: function(x, y) {
this.x = this.x + x;
this.y = this.y + y;
},
/** @final @type String */
CLASS_NAME: "OpenLayers.Geometry.Point"
});