wisemapping-open-source/web2d/src/main/javascript/PolyLine.js

/*
*    Copyright [2011] [wisemapping]
*
*   Licensed under the Apache License, Version 2.0 (the "License") plus the
*   "powered by wisemapping" text requirement on every single page;
*   you may not use this file except in compliance with the License.
*   You may obtain a copy of the license at
*
*       http://www.wisemapping.org/license
*
*   Unless required by applicable law or agreed to in writing, software
*   distributed under the License is distributed on an "AS IS" BASIS,
*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*   See the License for the specific language governing permissions and
*   limitations under the License.
*/

web2d.PolyLine = function(attributes)
{
    var peer = web2d.peer.Toolkit.createPolyLine();
    var defaultAttributes = {strokeColor:'blue',strokeWidth:1,strokeStyle:'solid',strokeOpacity:1};
    for (var key in attributes)
    {
        defaultAttributes[key] = attributes[key];
    }
    web2d.Element.call(this, peer, defaultAttributes);
};
objects.extend(web2d.PolyLine, web2d.Element);

web2d.PolyLine.prototype.getType = function()
{
    return "PolyLine";
};

web2d.PolyLine.prototype.setFrom = function(x, y)
{
    this._peer.setFrom(x, y);
};

web2d.PolyLine.prototype.setTo = function(x, y)
{
    this._peer.setTo(x, y);
};

web2d.PolyLine.prototype.setStyle = function(style)
{
    this._peer.setStyle(style);
};

web2d.PolyLine.prototype.getStyle = function()
{
    return this._peer.getStyle();
};

web2d.PolyLine.buildCurvedPath = function(dist, x1, y1, x2, y2)
{
    var signx = 1;
    var signy = 1;
    if (x2 < x1)
    {
        signx = -1;
    }
    if (y2 < y1)
    {
        signy = -1;
    }

    var path;
    if (Math.abs(y1 - y2) > 2)
    {
        var middlex = x1 + ((x2 - x1 > 0) ? dist : -dist);
        path = x1.toFixed(1) + ", " + y1.toFixed(1) + " " + middlex.toFixed(1) + ", " + y1.toFixed(1) + " " + middlex.toFixed(1) + ", " + (y2 - 5 * signy).toFixed(1) + " " + (middlex + 5 * signx).toFixed(1) + ", " + y2.toFixed(1) + " " + x2.toFixed(1) + ", " + y2.toFixed(1);
    } else
    {
        path = x1.toFixed(1) + ", " + y1.toFixed(1) + " " + x2.toFixed(1) + ", " + y2.toFixed(1);
    }

    return path;
};

web2d.PolyLine.buildStraightPath = function(dist, x1, y1, x2, y2)
{
    var middlex = x1 + ((x2 - x1 > 0) ? dist : -dist);
    return  x1 + ", " + y1 + " " + middlex + ", " + y1 + " " + middlex + ", " + y2 + " " + x2 + ", " + y2;
};