progress indicators, bug fixes, after a while
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98
public/assets/vendors/Flot/source/jquery.flot.symbol.js
vendored
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98
public/assets/vendors/Flot/source/jquery.flot.symbol.js
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/* Flot plugin that adds some extra symbols for plotting points.
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Copyright (c) 2007-2014 IOLA and Ole Laursen.
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Licensed under the MIT license.
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The symbols are accessed as strings through the standard symbol options:
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series: {
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points: {
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symbol: "square" // or "diamond", "triangle", "cross", "plus", "ellipse", "rectangle"
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}
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}
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*/
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(function ($) {
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// we normalize the area of each symbol so it is approximately the
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// same as a circle of the given radius
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var square = function (ctx, x, y, radius, shadow) {
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// pi * r^2 = (2s)^2 => s = r * sqrt(pi)/2
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var size = radius * Math.sqrt(Math.PI) / 2;
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ctx.rect(x - size, y - size, size + size, size + size);
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},
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rectangle = function (ctx, x, y, radius, shadow) {
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// pi * r^2 = (2s)^2 => s = r * sqrt(pi)/2
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var size = radius * Math.sqrt(Math.PI) / 2;
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ctx.rect(x - size, y - size, size + size, size + size);
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},
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diamond = function (ctx, x, y, radius, shadow) {
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// pi * r^2 = 2s^2 => s = r * sqrt(pi/2)
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var size = radius * Math.sqrt(Math.PI / 2);
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ctx.moveTo(x - size, y);
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ctx.lineTo(x, y - size);
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ctx.lineTo(x + size, y);
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ctx.lineTo(x, y + size);
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ctx.lineTo(x - size, y);
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ctx.lineTo(x, y - size);
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},
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triangle = function (ctx, x, y, radius, shadow) {
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// pi * r^2 = 1/2 * s^2 * sin (pi / 3) => s = r * sqrt(2 * pi / sin(pi / 3))
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var size = radius * Math.sqrt(2 * Math.PI / Math.sin(Math.PI / 3));
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var height = size * Math.sin(Math.PI / 3);
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ctx.moveTo(x - size / 2, y + height / 2);
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ctx.lineTo(x + size / 2, y + height / 2);
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if (!shadow) {
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ctx.lineTo(x, y - height / 2);
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ctx.lineTo(x - size / 2, y + height / 2);
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ctx.lineTo(x + size / 2, y + height / 2);
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}
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},
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cross = function (ctx, x, y, radius, shadow) {
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// pi * r^2 = (2s)^2 => s = r * sqrt(pi)/2
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var size = radius * Math.sqrt(Math.PI) / 2;
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ctx.moveTo(x - size, y - size);
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ctx.lineTo(x + size, y + size);
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ctx.moveTo(x - size, y + size);
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ctx.lineTo(x + size, y - size);
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},
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ellipse = function(ctx, x, y, radius, shadow, fill) {
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if (!shadow) {
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ctx.moveTo(x + radius, y);
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ctx.arc(x, y, radius, 0, Math.PI * 2, false);
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}
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},
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plus = function (ctx, x, y, radius, shadow) {
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var size = radius * Math.sqrt(Math.PI / 2);
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ctx.moveTo(x - size, y);
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ctx.lineTo(x + size, y);
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ctx.moveTo(x, y + size);
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ctx.lineTo(x, y - size);
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},
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handlers = {
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square: square,
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rectangle: rectangle,
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diamond: diamond,
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triangle: triangle,
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cross: cross,
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ellipse: ellipse,
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plus: plus
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};
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square.fill = true;
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rectangle.fill = true;
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diamond.fill = true;
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triangle.fill = true;
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ellipse.fill = true;
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function init(plot) {
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plot.drawSymbol = handlers;
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}
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$.plot.plugins.push({
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init: init,
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name: 'symbols',
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version: '1.0'
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});
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})(jQuery);
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