Adding jquery, flot and openlayers to be included with the GEM.v0.0.4

1 files changed, 433 insertions, 0 deletions

diff --git a/misc/openlayers/lib/OpenLayers/Geometry/LinearRing.js b/misc/openlayers/lib/OpenLayers/Geometry/LinearRing.js
new file mode 100644
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+++ b/misc/openlayers/lib/OpenLayers/Geometry/LinearRing.js
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+/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
+ * full list of contributors). Published under the 2-clause BSD license.
+ * See license.txt in the OpenLayers distribution or repository for the
+ * full text of the license. */
+
+/**
+ * @requires OpenLayers/Geometry/LineString.js
+ */
+
+/**
+ * Class: OpenLayers.Geometry.LinearRing
+ * 
+ * A Linear Ring is a special LineString which is closed. It closes itself 
+ * automatically on every addPoint/removePoint by adding a copy of the first
+ * point as the last point. 
+ * 
+ * Also, as it is the first in the line family to close itself, a getArea()
+ * function is defined to calculate the enclosed area of the linearRing
+ * 
+ * Inherits:
+ *  - <OpenLayers.Geometry.LineString>
+ */
+OpenLayers.Geometry.LinearRing = OpenLayers.Class(
+  OpenLayers.Geometry.LineString, {
+
+    /**
+     * Property: componentTypes
+     * {Array(String)} An array of class names representing the types of 
+     *                 components that the collection can include.  A null 
+     *                 value means the component types are not restricted.
+     */
+    componentTypes: ["OpenLayers.Geometry.Point"],
+
+    /**
+     * Constructor: OpenLayers.Geometry.LinearRing
+     * Linear rings are constructed with an array of points.  This array
+     *     can represent a closed or open ring.  If the ring is open (the last
+     *     point does not equal the first point), the constructor will close
+     *     the ring.  If the ring is already closed (the last point does equal
+     *     the first point), it will be left closed.
+     * 
+     * Parameters:
+     * points - {Array(<OpenLayers.Geometry.Point>)} points
+     */
+
+    /**
+     * APIMethod: addComponent
+     * Adds a point to geometry components.  If the point is to be added to
+     *     the end of the components array and it is the same as the last point
+     *     already in that array, the duplicate point is not added.  This has 
+     *     the effect of closing the ring if it is not already closed, and 
+     *     doing the right thing if it is already closed.  This behavior can 
+     *     be overridden by calling the method with a non-null index as the 
+     *     second argument.
+     *
+     * Parameters:
+     * point - {<OpenLayers.Geometry.Point>}
+     * index - {Integer} Index into the array to insert the component
+     * 
+     * Returns:
+     * {Boolean} Was the Point successfully added?
+     */
+    addComponent: function(point, index) {
+        var added = false;
+
+        //remove last point
+        var lastPoint = this.components.pop();
+
+        // given an index, add the point
+        // without an index only add non-duplicate points
+        if(index != null || !point.equals(lastPoint)) {
+            added = OpenLayers.Geometry.Collection.prototype.addComponent.apply(this, 
+                                                                    arguments);
+        }
+
+        //append copy of first point
+        var firstPoint = this.components[0];
+        OpenLayers.Geometry.Collection.prototype.addComponent.apply(this, 
+                                                                [firstPoint]);
+        
+        return added;
+    },
+    
+    /**
+     * APIMethod: removeComponent
+     * Removes a point from geometry components.
+     *
+     * Parameters:
+     * point - {<OpenLayers.Geometry.Point>}
+     *
+     * Returns: 
+     * {Boolean} The component was removed.
+     */
+    removeComponent: function(point) {
+        var removed = this.components && (this.components.length > 3);
+        if (removed) {
+            //remove last point
+            this.components.pop();
+            
+            //remove our point
+            OpenLayers.Geometry.Collection.prototype.removeComponent.apply(this, 
+                                                                    arguments);
+            //append copy of first point
+            var firstPoint = this.components[0];
+            OpenLayers.Geometry.Collection.prototype.addComponent.apply(this, 
+                                                                [firstPoint]);
+        }
+        return removed;
+    },
+    
+    /**
+     * APIMethod: move
+     * Moves a geometry by the given displacement along positive x and y axes.
+     *     This modifies the position of the geometry and clears the cached
+     *     bounds.
+     *
+     * Parameters:
+     * x - {Float} Distance to move geometry in positive x direction. 
+     * y - {Float} Distance to move geometry in positive y direction.
+     */
+    move: function(x, y) {
+        for(var i = 0, len=this.components.length; i<len - 1; i++) {
+            this.components[i].move(x, y);
+        }
+    },
+
+    /**
+     * APIMethod: rotate
+     * Rotate a geometry around some origin
+     *
+     * Parameters:
+     * angle - {Float} Rotation angle in degrees (measured counterclockwise
+     *                 from the positive x-axis)
+     * origin - {<OpenLayers.Geometry.Point>} Center point for the rotation
+     */
+    rotate: function(angle, origin) {
+        for(var i=0, len=this.components.length; i<len - 1; ++i) {
+            this.components[i].rotate(angle, origin);
+        }
+    },
+
+    /**
+     * APIMethod: resize
+     * Resize a geometry relative to some origin.  Use this method to apply
+     *     a uniform scaling to a geometry.
+     *
+     * Parameters:
+     * scale - {Float} Factor by which to scale the geometry.  A scale of 2
+     *                 doubles the size of the geometry in each dimension
+     *                 (lines, for example, will be twice as long, and polygons
+     *                 will have four times the area).
+     * origin - {<OpenLayers.Geometry.Point>} Point of origin for resizing
+     * ratio - {Float} Optional x:y ratio for resizing.  Default ratio is 1.
+     * 
+     * Returns:
+     * {<OpenLayers.Geometry>} - The current geometry. 
+     */
+    resize: function(scale, origin, ratio) {
+        for(var i=0, len=this.components.length; i<len - 1; ++i) {
+            this.components[i].resize(scale, origin, ratio);
+        }
+        return this;
+    },
+    
+    /**
+     * APIMethod: transform
+     * Reproject the components geometry from source to dest.
+     *
+     * Parameters:
+     * source - {<OpenLayers.Projection>}
+     * dest - {<OpenLayers.Projection>}
+     * 
+     * Returns:
+     * {<OpenLayers.Geometry>} 
+     */
+    transform: function(source, dest) {
+        if (source && dest) {
+            for (var i=0, len=this.components.length; i<len - 1; i++) {
+                var component = this.components[i];
+                component.transform(source, dest);
+            }
+            this.bounds = null;
+        }
+        return this;
+    },
+    
+    /**
+     * APIMethod: getCentroid
+     *
+     * Returns:
+     * {<OpenLayers.Geometry.Point>} The centroid of the collection
+     */
+    getCentroid: function() {
+        if (this.components) {
+            var len = this.components.length;
+            if (len > 0 && len <= 2) {
+                return this.components[0].clone();
+            } else if (len > 2) {
+                var sumX = 0.0;
+                var sumY = 0.0;
+                var x0 = this.components[0].x;
+                var y0 = this.components[0].y;
+                var area = -1 * this.getArea();
+                if (area != 0) {
+                    for (var i = 0; i < len - 1; i++) {
+                        var b = this.components[i];
+                        var c = this.components[i+1];
+                        sumX += (b.x + c.x - 2 * x0) * ((b.x - x0) * (c.y - y0) - (c.x - x0) * (b.y - y0));
+                        sumY += (b.y + c.y - 2 * y0) * ((b.x - x0) * (c.y - y0) - (c.x - x0) * (b.y - y0));
+                    }
+                    var x = x0 + sumX / (6 * area);
+                    var y = y0 + sumY / (6 * area);
+                } else {
+                    for (var i = 0; i < len - 1; i++) {
+                        sumX += this.components[i].x;
+                        sumY += this.components[i].y;
+                    }
+                    var x = sumX / (len - 1);
+                    var y = sumY / (len - 1);
+                }
+                return new OpenLayers.Geometry.Point(x, y);
+            } else {
+                return null;
+            }
+        }
+    },
+
+    /**
+     * APIMethod: getArea
+     * Note - The area is positive if the ring is oriented CW, otherwise
+     *         it will be negative.
+     * 
+     * Returns:
+     * {Float} The signed area for a ring.
+     */
+    getArea: function() {
+        var area = 0.0;
+        if ( this.components && (this.components.length > 2)) {
+            var sum = 0.0;
+            for (var i=0, len=this.components.length; i<len - 1; i++) {
+                var b = this.components[i];
+                var c = this.components[i+1];
+                sum += (b.x + c.x) * (c.y - b.y);
+            }
+            area = - sum / 2.0;
+        }
+        return area;
+    },
+    
+    /**
+     * APIMethod: getGeodesicArea
+     * Calculate the approximate area of the polygon were it projected onto
+     *     the earth.  Note that this area will be positive if ring is oriented
+     *     clockwise, otherwise it will be negative.
+     *
+     * Parameters:
+     * projection - {<OpenLayers.Projection>} The spatial reference system
+     *     for the geometry coordinates.  If not provided, Geographic/WGS84 is
+     *     assumed.
+     * 
+     * Reference:
+     * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
+     *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
+     *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
+     *
+     * Returns:
+     * {float} The approximate signed geodesic area of the polygon in square
+     *     meters.
+     */
+    getGeodesicArea: function(projection) {
+        var ring = this;  // so we can work with a clone if needed
+        if(projection) {
+            var gg = new OpenLayers.Projection("EPSG:4326");
+            if(!gg.equals(projection)) {
+                ring = this.clone().transform(projection, gg);
+            }
+        }
+        var area = 0.0;
+        var len = ring.components && ring.components.length;
+        if(len > 2) {
+            var p1, p2;
+            for(var i=0; i<len-1; i++) {
+                p1 = ring.components[i];
+                p2 = ring.components[i+1];
+                area += OpenLayers.Util.rad(p2.x - p1.x) *
+                        (2 + Math.sin(OpenLayers.Util.rad(p1.y)) +
+                        Math.sin(OpenLayers.Util.rad(p2.y)));
+            }
+            area = area * 6378137.0 * 6378137.0 / 2.0;
+        }
+        return area;
+    },
+    
+    /**
+     * Method: containsPoint
+     * Test if a point is inside a linear ring.  For the case where a point
+     *     is coincident with a linear ring edge, returns 1.  Otherwise,
+     *     returns boolean.
+     *
+     * Parameters:
+     * point - {<OpenLayers.Geometry.Point>}
+     *
+     * Returns:
+     * {Boolean | Number} The point is inside the linear ring.  Returns 1 if
+     *     the point is coincident with an edge.  Returns boolean otherwise.
+     */
+    containsPoint: function(point) {
+        var approx = OpenLayers.Number.limitSigDigs;
+        var digs = 14;
+        var px = approx(point.x, digs);
+        var py = approx(point.y, digs);
+        function getX(y, x1, y1, x2, y2) {
+            return (y - y2) * ((x2 - x1) / (y2 - y1)) + x2;
+        }
+        var numSeg = this.components.length - 1;
+        var start, end, x1, y1, x2, y2, cx, cy;
+        var crosses = 0;
+        for(var i=0; i<numSeg; ++i) {
+            start = this.components[i];
+            x1 = approx(start.x, digs);
+            y1 = approx(start.y, digs);
+            end = this.components[i + 1];
+            x2 = approx(end.x, digs);
+            y2 = approx(end.y, digs);
+            
+            /**
+             * The following conditions enforce five edge-crossing rules:
+             *    1. points coincident with edges are considered contained;
+             *    2. an upward edge includes its starting endpoint, and
+             *    excludes its final endpoint;
+             *    3. a downward edge excludes its starting endpoint, and
+             *    includes its final endpoint;
+             *    4. horizontal edges are excluded; and
+             *    5. the edge-ray intersection point must be strictly right
+             *    of the point P.
+             */
+            if(y1 == y2) {
+                // horizontal edge
+                if(py == y1) {
+                    // point on horizontal line
+                    if(x1 <= x2 && (px >= x1 && px <= x2) || // right or vert
+                       x1 >= x2 && (px <= x1 && px >= x2)) { // left or vert
+                        // point on edge
+                        crosses = -1;
+                        break;
+                    }
+                }
+                // ignore other horizontal edges
+                continue;
+            }
+            cx = approx(getX(py, x1, y1, x2, y2), digs);
+            if(cx == px) {
+                // point on line
+                if(y1 < y2 && (py >= y1 && py <= y2) || // upward
+                   y1 > y2 && (py <= y1 && py >= y2)) { // downward
+                    // point on edge
+                    crosses = -1;
+                    break;
+                }
+            }
+            if(cx <= px) {
+                // no crossing to the right
+                continue;
+            }
+            if(x1 != x2 && (cx < Math.min(x1, x2) || cx > Math.max(x1, x2))) {
+                // no crossing
+                continue;
+            }
+            if(y1 < y2 && (py >= y1 && py < y2) || // upward
+               y1 > y2 && (py < y1 && py >= y2)) { // downward
+                ++crosses;
+            }
+        }
+        var contained = (crosses == -1) ?
+            // on edge
+            1 :
+            // even (out) or odd (in)
+            !!(crosses & 1);
+
+        return contained;
+    },
+
+    /**
+     * APIMethod: intersects
+     * Determine if the input geometry intersects this one.
+     *
+     * Parameters:
+     * geometry - {<OpenLayers.Geometry>} Any type of geometry.
+     *
+     * Returns:
+     * {Boolean} The input geometry intersects this one.
+     */
+    intersects: function(geometry) {
+        var intersect = false;
+        if(geometry.CLASS_NAME == "OpenLayers.Geometry.Point") {
+            intersect = this.containsPoint(geometry);
+        } else if(geometry.CLASS_NAME == "OpenLayers.Geometry.LineString") {
+            intersect = geometry.intersects(this);
+        } else if(geometry.CLASS_NAME == "OpenLayers.Geometry.LinearRing") {
+            intersect = OpenLayers.Geometry.LineString.prototype.intersects.apply(
+                this, [geometry]
+            );
+        } else {
+            // check for component intersections
+            for(var i=0, len=geometry.components.length; i<len; ++ i) {
+                intersect = geometry.components[i].intersects(this);
+                if(intersect) {
+                    break;
+                }
+            }
+        }
+        return intersect;
+    },
+
+    /**
+     * APIMethod: getVertices
+     * Return a list of all points in this geometry.
+     *
+     * Parameters:
+     * nodes - {Boolean} For lines, only return vertices that are
+     *     endpoints.  If false, for lines, only vertices that are not
+     *     endpoints will be returned.  If not provided, all vertices will
+     *     be returned.
+     *
+     * Returns:
+     * {Array} A list of all vertices in the geometry.
+     */
+    getVertices: function(nodes) {
+        return (nodes === true) ? [] : this.components.slice(0, this.components.length-1);
+    },
+
+    CLASS_NAME: "OpenLayers.Geometry.LinearRing"
+});