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kern/superx/xml/js/bil/plugins/jqplot.BezierCurveRenderer.js

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/**
* jqPlot
* Pure JavaScript plotting plugin using jQuery
*
* Version: 1.0.8
* Revision: 1250
*
* Copyright (c) 2009-2013 Chris Leonello
* jqPlot is currently available for use in all personal or commercial projects
* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
* choose the license that best suits your project and use it accordingly.
*
* Although not required, the author would appreciate an email letting him
* know of any substantial use of jqPlot. You can reach the author at:
* chris at jqplot dot com or see http://www.jqplot.com/info.php .
*
* If you are feeling kind and generous, consider supporting the project by
* making a donation at: http://www.jqplot.com/donate.php .
*
* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
*
* version 2007.04.27
* author Ash Searle
* http://hexmen.com/blog/2007/03/printf-sprintf/
* http://hexmen.com/js/sprintf.js
* The author (Ash Searle) has placed this code in the public domain:
* "This code is unrestricted: you are free to use it however you like."
*
*/
(function($) {
// Class: $.jqplot.BezierCurveRenderer.js
// Renderer which draws lines as stacked bezier curves.
// Data for the line will not be specified as an array of
// [x, y] data point values, but as a an array of [start piont, bezier curve]
// So, the line is specified as: [[xstart, ystart], [cp1x, cp1y, cp2x, cp2y, xend, yend]].
$.jqplot.BezierCurveRenderer = function(){
$.jqplot.LineRenderer.call(this);
};
$.jqplot.BezierCurveRenderer.prototype = new $.jqplot.LineRenderer();
$.jqplot.BezierCurveRenderer.prototype.constructor = $.jqplot.BezierCurveRenderer;
// Method: setGridData
// converts the user data values to grid coordinates and stores them
// in the gridData array.
// Called with scope of a series.
$.jqplot.BezierCurveRenderer.prototype.setGridData = function(plot) {
// recalculate the grid data
var xp = this._xaxis.series_u2p;
var yp = this._yaxis.series_u2p;
// this._plotData should be same as this.data
var data = this.data;
this.gridData = [];
this._prevGridData = [];
// if seriesIndex = 0, fill to x axis.
// if seriesIndex > 0, fill to previous series data.
var idx = this.index;
if (data.length == 2) {
if (idx == 0) {
this.gridData = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
[xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, this._yaxis.min)],
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
];
}
else {
var psd = plot.series[idx-1].data;
this.gridData = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
[xp.call(this._xaxis, psd[1][4]), yp.call(this._yaxis, psd[1][5])],
[xp.call(this._xaxis, psd[1][2]), yp.call(this._yaxis, psd[1][3]),
xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
];
}
}
else {
if (idx == 0) {
this.gridData = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
[xp.call(this._xaxis, data[3][1]), yp.call(this._yaxis, this._yaxis.min)],
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
];
}
else {
var psd = plot.series[idx-1].data;
this.gridData = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
[xp.call(this._xaxis, psd[3][0]), yp.call(this._yaxis, psd[3][1])],
[xp.call(this._xaxis, psd[2][0]), yp.call(this._yaxis, psd[2][1]),
xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
];
}
}
};
// Method: makeGridData
// converts any arbitrary data values to grid coordinates and
// returns them. This method exists so that plugins can use a series'
// linerenderer to generate grid data points without overwriting the
// grid data associated with that series.
// Called with scope of a series.
$.jqplot.BezierCurveRenderer.prototype.makeGridData = function(data, plot) {
// recalculate the grid data
var xp = this._xaxis.series_u2p;
var yp = this._yaxis.series_u2p;
var gd = [];
var pgd = [];
// if seriesIndex = 0, fill to x axis.
// if seriesIndex > 0, fill to previous series data.
var idx = this.index;
if (data.length == 2) {
if (idx == 0) {
gd = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
[xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, this._yaxis.min)],
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
];
}
else {
var psd = plot.series[idx-1].data;
gd = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[1][2]), yp.call(this._yaxis, data[1][3]),
xp.call(this._xaxis, data[1][4]), yp.call(this._yaxis, data[1][5])],
[xp.call(this._xaxis, psd[1][4]), yp.call(this._yaxis, psd[1][5])],
[xp.call(this._xaxis, psd[1][2]), yp.call(this._yaxis, psd[1][3]),
xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
];
}
}
else {
if (idx == 0) {
gd = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
[xp.call(this._xaxis, data[3][1]), yp.call(this._yaxis, this._yaxis.min)],
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, this._yaxis.min)]
];
}
else {
var psd = plot.series[idx-1].data;
gd = [
[xp.call(this._xaxis, data[0][0]), yp.call(this._yaxis, data[0][1])],
[xp.call(this._xaxis, data[1][0]), yp.call(this._yaxis, data[1][1]),
xp.call(this._xaxis, data[2][0]), yp.call(this._yaxis, data[2][1]),
xp.call(this._xaxis, data[3][0]), yp.call(this._yaxis, data[3][1])],
[xp.call(this._xaxis, psd[3][0]), yp.call(this._yaxis, psd[3][1])],
[xp.call(this._xaxis, psd[2][0]), yp.call(this._yaxis, psd[2][1]),
xp.call(this._xaxis, psd[1][0]), yp.call(this._yaxis, psd[1][1]),
xp.call(this._xaxis, psd[0][0]), yp.call(this._yaxis, psd[0][1])]
];
}
}
return gd;
};
// called within scope of series.
$.jqplot.BezierCurveRenderer.prototype.draw = function(ctx, gd, options) {
var i;
ctx.save();
if (gd.length) {
if (this.showLine) {
ctx.save();
var opts = (options != null) ? options : {};
ctx.fillStyle = opts.fillStyle || this.color;
ctx.beginPath();
ctx.moveTo(gd[0][0], gd[0][1]);
ctx.bezierCurveTo(gd[1][0], gd[1][1], gd[1][2], gd[1][3], gd[1][4], gd[1][5]);
ctx.lineTo(gd[2][0], gd[2][1]);
if (gd[3].length == 2) {
ctx.lineTo(gd[3][0], gd[3][1]);
}
else {
ctx.bezierCurveTo(gd[3][0], gd[3][1], gd[3][2], gd[3][3], gd[3][4], gd[3][5]);
}
ctx.closePath();
ctx.fill();
ctx.restore();
}
}
ctx.restore();
};
$.jqplot.BezierCurveRenderer.prototype.drawShadow = function(ctx, gd, options) {
// This is a no-op, shadows drawn with lines.
};
$.jqplot.BezierAxisRenderer = function() {
$.jqplot.LinearAxisRenderer.call(this);
};
$.jqplot.BezierAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
$.jqplot.BezierAxisRenderer.prototype.constructor = $.jqplot.BezierAxisRenderer;
// Axes on a plot with Bezier Curves
$.jqplot.BezierAxisRenderer.prototype.init = function(options){
$.extend(true, this, options);
var db = this._dataBounds;
// Go through all the series attached to this axis and find
// the min/max bounds for this axis.
for (var i=0; i<this._series.length; i++) {
var s = this._series[i];
var d = s.data;
if (d.length == 4) {
for (var j=0; j<d.length; j++) {
if (this.name == 'xaxis' || this.name == 'x2axis') {
if (d[j][0] < db.min || db.min == null) {
db.min = d[j][0];
}
if (d[j][0] > db.max || db.max == null) {
db.max = d[j][0];
}
}
else {
if (d[j][1] < db.min || db.min == null) {
db.min = d[j][1];
}
if (d[j][1] > db.max || db.max == null) {
db.max = d[j][1];
}
}
}
}
else {
if (this.name == 'xaxis' || this.name == 'x2axis') {
if (d[0][0] < db.min || db.min == null) {
db.min = d[0][0];
}
if (d[0][0] > db.max || db.max == null) {
db.max = d[0][0];
}
for (var j=0; j<5; j+=2) {
if (d[1][j] < db.min || db.min == null) {
db.min = d[1][j];
}
if (d[1][j] > db.max || db.max == null) {
db.max = d[1][j];
}
}
}
else {
if (d[0][1] < db.min || db.min == null) {
db.min = d[0][1];
}
if (d[0][1] > db.max || db.max == null) {
db.max = d[0][1];
}
for (var j=1; j<6; j+=2) {
if (d[1][j] < db.min || db.min == null) {
db.min = d[1][j];
}
if (d[1][j] > db.max || db.max == null) {
db.max = d[1][j];
}
}
}
}
}
};
// setup default renderers for axes and legend so user doesn't have to
// called with scope of plot
function preInit(target, data, options) {
options = options || {};
options.axesDefaults = $.extend(true, {pad:0}, options.axesDefaults);
options.seriesDefaults = options.seriesDefaults || {};
options.legend = $.extend(true, {placement:'outside'}, options.legend);
// only set these if there is a pie series
var setopts = false;
if (options.seriesDefaults.renderer == $.jqplot.BezierCurveRenderer) {
setopts = true;
}
else if (options.series) {
for (var i=0; i < options.series.length; i++) {
if (options.series[i].renderer == $.jqplot.BezierCurveRenderer) {
setopts = true;
}
}
}
if (setopts) {
options.axesDefaults.renderer = $.jqplot.BezierAxisRenderer;
}
}
$.jqplot.preInitHooks.push(preInit);
})(jQuery);