diff --git a/g.radar.js b/g.radar.js new file mode 100644 index 0000000..ef7fb12 --- /dev/null +++ b/g.radar.js @@ -0,0 +1,237 @@ +/* + * Radar charts for g.Raphael + * + * Copyright (c) 2009 Silvan T. Golega + * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) license. + * + * Developed for: + * g.Raphael 0.4 - Charting library, based on Raphaël + * + * Copyright (c) 2009 Dmitry Baranovskiy (http://g.raphaeljs.com) + * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) license. + */ +Raphael.fn.g.radar = function (cx, cy, r, values, opts) { + opts = opts || {}; + var paper = this, + arms = [], // holds the values, their positions, paths, arms, discs + chart = this.set(), // the chart that will be constructed and returned + covers = this.set(), // holds the areas for event handling + series = this.set(), + middle_point, // raphael disc for background mesh + mesh = this.set(), // the background mesh + total = 0, + max = 0, // the maximum of the values + len = values.length, // number of values + web = {pointarray: [], path: null}; // connecting lines between values + + + // overwrite default values for options with opts + var default_opts = { + meshwidth: 1, + strokewidth: 2, + stroke: "#f90", + meshcolor: "#999", + helplines: 5, + discradius: 10, + numbers: true, + numberscolor: "#fff" + }; + for (var property in opts) + default_opts[property] = opts[property]; + opts = default_opts; + delete default_opts; + + // help function for drawing an arm + var arm = function (sx, sy, r, angle, m) { + var rad = Math.PI / 180, + cos = Math.cos(-angle * rad), + sin = Math.sin(-angle * rad), + x = sx + r * cos, + y = sy + r * sin, + ex = sx + m * cos, + ey = sy + m * sin, + res = { + x: x, + y: y, + //start: {x: sx, y: sy}, + //end: {x: ex, y: ey}, + path: ["M", cx, cy, "L", x, y].join(','), + rest: ["M", x, y, "L", ex, ey].join(','), + }; + return res; + } + + // determine the max value + for (var i = 0; i < len; i++) { + total += values[i]; + max = max>values[i] ? max : values[i]; + } + + // draw middle point and mesh circles + middle_point = this.g.disc(cx, cy, 5).attr({stroke: opts.meshcolor, fill: opts.meshcolor, "stroke-width": opts.meshwidth}); + if (opts.helplines){ + var helpradius = r / opts.helplines; + for (var i = 0; i < opts.helplines; i++) { + mesh.push(this.circle(cx, cy, helpradius*(i+1)).attr({stroke: opts.meshcolor, "stroke-width": opts.meshwidth})); + } + } + + // calculate the arms + for (var i = 0; i < len; i++) { + arms[i] = arm(cx, cy, r * values[i] / max, i * 360 / len, r); + } + + // draw a poligon through the value points + web.pointarray.push("M"); + for (var i = 0; i < len; i++) { + web.pointarray.push(arms[i].x, arms[i].y, "L"); + } + web.pointarray.push(arms[0].x, arms[0].y); + web.path = this.path(web.pointarray.join(',')).attr({stroke: opts.stroke, "stroke-width": opts.meshwidth, fill: opts.stroke, "fill-opacity": 0.4}); + + // draw the value points (and arms) as latest to make sure they are the topmost + for (var i = 0; i < len; i++) { + arms[i].path = this.path(arms[i].path) + .attr({stroke: opts.stroke, "stroke-width": opts.strokewidth}); + arms[i].rest = this.path(arms[i].rest) + .attr({stroke: opts.meshcolor, "stroke-width": opts.meshwidth}); + arms[i].point = this.g.disc(arms[i].x, arms[i].y, opts.discradius) + .attr({stroke: opts.stroke, fill: opts.stroke }); + if(opts.numbers){ + arms[i].number = this.text(arms[i].x, arms[i].y+1, i+1).attr(this.g.txtattr).attr({fill: opts.numberscolor, "text-anchor": "middle"}); + } + var cover = this.set(); + cover.push(arms[i].path, arms[i].rest, arms[i].point); + if (arms[i].number) + cover.push(arms[i].number); + covers.push(cover); + series.push(arms[i].point); + } + + + chart.hover = function (fin, fout) { + fout = fout || function () {}; + var that = this; + for (var i = 0; i < len; i++) { + (function (arm, cover, j) { + var o = { + arm: arm.point, + number: arm.number, + cover: cover, + cx: cx, + cy: cy, + mx: arm.x, + my: arm.y, + value: values[j], + max: max, + label: that.labels && that.labels[j] + }; + o.cover.mouseover(function () { + fin.call(o); + }).mouseout(function () { + fout.call(o); + }); + if (o.label){ + o.label.mouseover(function () { + fin.call(o); + }).mouseout(function () { + fout.call(o); + }); + } + })(arms[i], covers[i], i); + } + return this; + }; + // x: where label could be put + // y: where label could be put + // value: value to show + // total: total number to count % + chart.each = function (f) { + var that = this; + for (var i = 0; i < len; i++) { + (function (arm, cover, j) { + var o = { + arm: arm.point, + number: arm.number, + cover: cover, + cx: cx, + cy: cy, + x: arm.x, + y: arm.y, + value: values[j], + max: max, + label: that.labels && that.labels[j] + }; + f.call(o); + })(arms[i], covers[i], i); + } + return this; + }; + + chart.click = function (f) { + var that = this; + for (var i = 0; i < len; i++) { + (function (arm, cover, j) { + var o = { + arm: arm.point, + number: arm.number, + cover: cover, + cx: cx, + cy: cy, + mx: arm.x, + my: arm.y, + value: values[j], + max: max, + label: that.labels && that.labels[j] + }; + cover.click(function () { f.call(o); }); + if (o.label){ + o.label.click(function () { + f.call(o); + }); + } + })(arms[i], covers[i], i); + } + return this; + }; + + var legend = function (labels, otherslabel, mark, dir) { + var x = cx + r + r / 5, + y = cy, + h = y + 10; + labels = labels || []; + dir = (dir && dir.toLowerCase && dir.toLowerCase()) || "east"; + mark = paper.g.markers[mark && mark.toLowerCase()] || "disc"; + chart.labels = paper.set(); + for (var i = 0; i < len; i++) { + var clr = series[i].attr("fill"), + txt; + values[i].others && (labels[j] = otherslabel || "Others"); + labels[i] = paper.g.labelise(labels[i], values[i], total); + chart.labels.push(paper.set()); + chart.labels[i].push(paper.g[mark](x + 5, h, 8).attr({fill: clr, stroke: "none"})); + chart.labels[i].push(txt = paper.text(x + 20, h, labels[i] || values[i]).attr(paper.g.txtattr).attr({fill: opts.legendcolor || "#000", "text-anchor": "start"})); + if(opts.numbers){ + chart.labels[i].push(paper.text(x+5, h+1, i+1).attr(paper.g.txtattr).attr({fill: opts.numberscolor, "text-anchor": "middle"})); + } + covers[i].label = chart.labels[i]; + h += txt.getBBox().height * 1.2; + } + var bb = chart.labels.getBBox(), + tr = { + east: [0, -bb.height / 2], + west: [-bb.width - 2 * r - 20, -bb.height / 2], + north: [-r - bb.width / 2, -r - bb.height - 10], + south: [-r - bb.width / 2, r + 10] + }[dir]; + chart.labels.translate.apply(chart.labels, tr); + chart.push(chart.labels); + }; + if (opts.legend) { + legend(opts.legend, opts.legendothers, opts.legendmark, opts.legendpos); + } + chart.push(series, covers, middle_point, mesh); + chart.series = series; + chart.covers = covers; + return chart; +}; diff --git a/test-radar.html b/test-radar.html new file mode 100644 index 0000000..278df63 --- /dev/null +++ b/test-radar.html @@ -0,0 +1,67 @@ + + +
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