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312 lines
14 KiB
JavaScript
312 lines
14 KiB
JavaScript
/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: 1.0.0b2_r947
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*
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* Copyright (c) 2009-2011 Chris Leonello
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* jqPlot is currently available for use in all personal or commercial projects
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* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
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* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
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* choose the license that best suits your project and use it accordingly.
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*
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* Although not required, the author would appreciate an email letting him
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* know of any substantial use of jqPlot. You can reach the author at:
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* chris at jqplot dot com or see http://www.jqplot.com/info.php .
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*
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* If you are feeling kind and generous, consider supporting the project by
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* making a donation at: http://www.jqplot.com/donate.php .
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*
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* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
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*
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* version 2007.04.27
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* author Ash Searle
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* http://hexmen.com/blog/2007/03/printf-sprintf/
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* http://hexmen.com/js/sprintf.js
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* The author (Ash Searle) has placed this code in the public domain:
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* "This code is unrestricted: you are free to use it however you like."
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*
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*/
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(function($) {
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// Class: $.jqplot.BezierCurveRenderer.js
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// Renderer which draws lines as stacked bezier curves.
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// Data for the line will not be specified as an array of
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// [x, y] data point values, but as a an array of [start piont, bezier curve]
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// So, the line is specified as: [[xstart, ystart], [cp1x, cp1y, cp2x, cp2y, xend, yend]].
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$.jqplot.BezierCurveRenderer = function(){
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$.jqplot.LineRenderer.call(this);
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};
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$.jqplot.BezierCurveRenderer.prototype = new $.jqplot.LineRenderer();
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$.jqplot.BezierCurveRenderer.prototype.constructor = $.jqplot.BezierCurveRenderer;
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// Method: setGridData
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// converts the user data values to grid coordinates and stores them
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// in the gridData array.
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// Called with scope of a series.
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$.jqplot.BezierCurveRenderer.prototype.setGridData = function(plot) {
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// recalculate the grid data
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var xp = this._xaxis.series_u2p;
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var yp = this._yaxis.series_u2p;
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// this._plotData should be same as this.data
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var data = this.data;
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this.gridData = [];
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this._prevGridData = [];
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// if seriesIndex = 0, fill to x axis.
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// if seriesIndex > 0, fill to previous series data.
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var idx = this.index;
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if (data.length == 2) {
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if (idx == 0) {
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this.gridData = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
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xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
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[xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, this._yaxis.min)],
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
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];
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}
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else {
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var psd = plot.series[idx-1].data;
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this.gridData = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
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xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
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[xp.call(this._xaxis, psd[1][4]), yp.call(this._yaxis, psd[1][5])],
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[xp.call(this._xaxis, psd[1][2]), yp.call(this._yaxis, psd[1][3]),
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xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
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xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
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];
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}
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}
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else {
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if (idx == 0) {
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this.gridData = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
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xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
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[xp.call(this._xaxis, data[3][1]), yp.call(this._yaxis, this._yaxis.min)],
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
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];
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}
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else {
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var psd = plot.series[idx-1].data;
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this.gridData = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
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xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
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[xp.call(this._xaxis, psd[3][0]), yp.call(this._yaxis, psd[3][1])],
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[xp.call(this._xaxis, psd[2][0]), yp.call(this._yaxis, psd[2][1]),
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xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
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xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
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];
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}
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}
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};
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// Method: makeGridData
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// converts any arbitrary data values to grid coordinates and
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// returns them. This method exists so that plugins can use a series'
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// linerenderer to generate grid data points without overwriting the
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// grid data associated with that series.
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// Called with scope of a series.
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$.jqplot.BezierCurveRenderer.prototype.makeGridData = function(data, plot) {
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// recalculate the grid data
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var xp = this._xaxis.series_u2p;
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var yp = this._yaxis.series_u2p;
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var gd = [];
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var pgd = [];
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// if seriesIndex = 0, fill to x axis.
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// if seriesIndex > 0, fill to previous series data.
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var idx = this.index;
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if (data.length == 2) {
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if (idx == 0) {
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gd = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
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xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
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[xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, this._yaxis.min)],
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
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];
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}
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else {
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var psd = plot.series[idx-1].data;
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gd = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
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xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
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[xp.call(this._xaxis, psd[1][4]), yp.call(this._yaxis, psd[1][5])],
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[xp.call(this._xaxis, psd[1][2]), yp.call(this._yaxis, psd[1][3]),
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xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
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xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
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];
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}
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}
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else {
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if (idx == 0) {
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gd = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
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xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
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[xp.call(this._xaxis, data[3][1]), yp.call(this._yaxis, this._yaxis.min)],
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
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];
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}
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else {
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var psd = plot.series[idx-1].data;
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gd = [
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[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
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[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
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xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
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xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
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[xp.call(this._xaxis, psd[3][0]), yp.call(this._yaxis, psd[3][1])],
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[xp.call(this._xaxis, psd[2][0]), yp.call(this._yaxis, psd[2][1]),
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xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
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xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
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];
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}
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}
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return gd;
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};
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// called within scope of series.
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$.jqplot.BezierCurveRenderer.prototype.draw = function(ctx, gd, options) {
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var i;
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ctx.save();
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if (gd.length) {
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if (this.showLine) {
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ctx.save();
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var opts = (options != null) ? options : {};
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ctx.fillStyle = opts.fillStyle || this.color;
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ctx.beginPath();
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ctx.moveTo(gd[0][0], gd[0][1]);
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ctx.bezierCurveTo(gd[1][0], gd[1][1], gd[1][2], gd[1][3], gd[1][4], gd[1][5]);
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ctx.lineTo(gd[2][0], gd[2][1]);
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if (gd[3].length == 2) {
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ctx.lineTo(gd[3][0], gd[3][1]);
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}
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else {
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ctx.bezierCurveTo(gd[3][0], gd[3][1], gd[3][2], gd[3][3], gd[3][4], gd[3][5]);
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}
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ctx.closePath();
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ctx.fill();
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ctx.restore();
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}
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}
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ctx.restore();
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};
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$.jqplot.BezierCurveRenderer.prototype.drawShadow = function(ctx, gd, options) {
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// This is a no-op, shadows drawn with lines.
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};
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$.jqplot.BezierAxisRenderer = function() {
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$.jqplot.LinearAxisRenderer.call(this);
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};
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$.jqplot.BezierAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
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$.jqplot.BezierAxisRenderer.prototype.constructor = $.jqplot.BezierAxisRenderer;
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// Axes on a plot with Bezier Curves
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$.jqplot.BezierAxisRenderer.prototype.init = function(options){
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$.extend(true, this, options);
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var db = this._dataBounds;
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// Go through all the series attached to this axis and find
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// the min/max bounds for this axis.
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for (var i=0; i<this._series.length; i++) {
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var s = this._series[i];
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var d = s.data;
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if (d.length == 4) {
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for (var j=0; j<d.length; j++) {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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if (d[j][0] < db.min || db.min == null) {
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db.min = d[j][0];
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}
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if (d[j][0] > db.max || db.max == null) {
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db.max = d[j][0];
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}
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}
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else {
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if (d[j][1] < db.min || db.min == null) {
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db.min = d[j][1];
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}
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if (d[j][1] > db.max || db.max == null) {
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db.max = d[j][1];
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}
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}
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}
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}
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else {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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if (d[0][0] < db.min || db.min == null) {
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db.min = d[0][0];
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}
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if (d[0][0] > db.max || db.max == null) {
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db.max = d[0][0];
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}
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for (var j=0; j<5; j+=2) {
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if (d[1][j] < db.min || db.min == null) {
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db.min = d[1][j];
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}
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if (d[1][j] > db.max || db.max == null) {
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db.max = d[1][j];
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}
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}
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}
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else {
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if (d[0][1] < db.min || db.min == null) {
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db.min = d[0][1];
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}
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if (d[0][1] > db.max || db.max == null) {
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db.max = d[0][1];
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}
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for (var j=1; j<6; j+=2) {
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if (d[1][j] < db.min || db.min == null) {
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db.min = d[1][j];
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}
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if (d[1][j] > db.max || db.max == null) {
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db.max = d[1][j];
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}
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}
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}
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}
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}
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};
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// setup default renderers for axes and legend so user doesn't have to
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// called with scope of plot
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function preInit(target, data, options) {
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options = options || {};
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options.axesDefaults = $.extend(true, {pad:0}, options.axesDefaults);
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options.legend = $.extend(true, {placement:'outside'}, options.legend);
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// only set these if there is a pie series
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var setopts = false;
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if (options.seriesDefaults.renderer == $.jqplot.BezierCurveRenderer) {
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setopts = true;
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}
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else if (options.series) {
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for (var i=0; i < options.series.length; i++) {
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if (options.series[i].renderer == $.jqplot.BezierCurveRenderer) {
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setopts = true;
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}
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}
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}
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if (setopts) {
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options.axesDefaults.renderer = $.jqplot.BezierAxisRenderer;
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}
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}
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$.jqplot.preInitHooks.push(preInit);
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})(jQuery);
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