From 31a2a1300f875fde4e978de7c6c49034cd006b71 Mon Sep 17 00:00:00 2001 From: Masayuki Tanaka Date: Thu, 6 Feb 2014 10:25:46 +0900 Subject: [PATCH] Fix sacatter plot tooltip when same x data exists --- c3.js | 70 +++++++++++++++++--------- c3.min.js | 146 +++++++++++++++++++++++++++--------------------------- 2 files changed, 119 insertions(+), 97 deletions(-) diff --git a/c3.js b/c3.js index d545751..7e01403 100644 --- a/c3.js +++ b/c3.js @@ -628,50 +628,72 @@ return y(d.value); } + function findSameXOfValues(values, index) { + var i, targetX = values[index].x, sames = []; + for (i = index - 1; i >= 0; i--) { + if (targetX !== values[i].x) { break; } + sames.push(values[i]); + } + for (i = index; i < values.length; i++) { + if (targetX !== values[i].x) { break; } + sames.push(values[i]); + } + return sames; + } + function findClosestOfValues(values, pos, _min, _max) { // MEMO: values must be sorted by x var min = _min ? _min : 0, max = _max ? _max : values.length - 1, med = Math.floor((max - min) / 2) + min, value = values[med], diff = x(value.x) - pos[0], - minDist, maxDist; + candidates; - // Update rage for search + // Update range for search diff > 0 ? max = med : min = med; // if candidates are two closest min and max, stop recursive call if ((max - min) === 1) { - if (! values[min].x) { return values[max]; } - if (! values[max].x) { return values[min]; } - minDist = Math.pow(pos[0] - x(values[min].x), 2) + Math.pow(pos[1] - y(values[min].value), 2); - maxDist = Math.pow(pos[0] - x(values[max].x), 2) + Math.pow(pos[1] - y(values[max].value), 2); - return minDist < maxDist ? values[min] : values[max]; + + // Get candidates that has same min and max index + candidates = []; + if (values[min].x) { + candidates = candidates.concat(findSameXOfValues(values, min)); + } + if (values[max].x) { + candidates = candidates.concat(findSameXOfValues(values, max)); + } + + // Determine the closest and return + return findClosest(candidates, pos); } return findClosestOfValues(values, pos, min, max); } - function findClosest(targets, mouse) { - var closest, closests, minDist; + function findClosestFromTargets(targets, pos) { + var candidates; // map to array of closest points of each target - closests = targets.map(function (target) { - return findClosestOfValues(target.values, mouse); + candidates = targets.map(function (target) { + return findClosestOfValues(target.values, pos); }); - // decide closest point - closests.forEach(function (c) { - var dist = Math.pow(x(c.x) - mouse[0], 2) + Math.pow(y(c.value) - mouse[1], 2); - if (dist < minDist || ! minDist) { - minDist = dist; - closest = c; + // decide closest point and return + return findClosest(candidates, pos); + } + function findClosest(values, pos) { + var minDist, closest; + values.forEach(function (v) { + var d = dist(v, pos); + if (d < minDist || ! minDist) { + minDist = d; + closest = v; } }); - - // TODO: multiple closests when each is very close - return closest; } + //-- Tooltip --// function showTooltip(selectedData, mouse) { @@ -894,8 +916,8 @@ return found; } - function dist(data, mouse) { - return Math.pow(x(data.x) - mouse[0], 2) + Math.pow(y(data.value) - mouse[1], 2); + function dist(data, pos) { + return Math.pow(x(data.x) - pos[0], 2) + Math.pow(y(data.value) - pos[1], 2); } //-- Selection --// @@ -1480,7 +1502,7 @@ if (dragging) { return; } // do nothing when dragging mouse = d3.mouse(this); - closest = findClosest(c3.data.targets, mouse); + closest = findClosestFromTargets(c3.data.targets, mouse); // show tooltip when cursor is close to some point selectedData = [addName(closest)]; @@ -1504,7 +1526,7 @@ }) .on('click', function () { var mouse = d3.mouse(this), - closest = findClosest(c3.data.targets, mouse); + closest = findClosestFromTargets(c3.data.targets, mouse); // select if selection enabled if (dist(closest, mouse) < 100) { diff --git a/c3.min.js b/c3.min.js index 0b0ee26..d7fa9dd 100644 --- a/c3.min.js +++ b/c3.min.js @@ -1,73 +1,73 @@ -(function(Q){function Qc(){function n(c,e){c.attr("transform",function(c){return"translate("+(e(c)+ca)+", 0)"})}function s(c,e){c.attr("transform",function(c){return"translate(0,"+e(c)+")"})}function Q(c){var e=c[0];c=c[c.length-1];return ea?0:a}function ec(a){return ra&&a===ra||Y&&fd(Y,a)}function gd(a){return!ec(a)}function eb(a){var b=Ka[a.id];a.name=n(b)?b:a.id;return a}function fc(a){var b=a[0],d={},f=[],c,H;for(c=1;ct[d].indexOf(c.id)))for(f=0;fb?a-b:0};return function(a){var c= -b?T(a.id):F(a.id);return d(c(a.value))}}function gb(a,b){var d=s(a)?ub():a;"string"===typeof d&&(d=[d]);for(var f=0;f=e;e+=r)h+=f(a[c-1],a[c],e,l)}return h}function Db(a){var b,d;hb=c.select(xa);if(hb.empty())Q.alert('No bind element found. 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