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Commit ce47ee1

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archmojarchmoj
committed
refactor splom - add files for calc plot hover select helpers and update_scene
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‎src/traces/splom/calc.js

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/**
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* Copyright 2012-2019, Plotly, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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var Lib = require('../../lib');
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var AxisIDs = require('../../plots/cartesian/axis_ids');
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var calcMarkerSize = require('../scatter/calc').calcMarkerSize;
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var calcAxisExpansion = require('../scatter/calc').calcAxisExpansion;
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var calcColorscale = require('../scatter/colorscale_calc');
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var convertMarkerSelection = require('../scattergl/convert').markerSelection;
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var convertMarkerStyle = require('../scattergl/convert').markerStyle;
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var sceneUpdate = require('./scene_update');
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var BADNUM = require('../../constants/numerical').BADNUM;
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var TOO_MANY_POINTS = require('../scattergl/constants').TOO_MANY_POINTS;
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module.exports = function calc(gd, trace) {
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var dimensions = trace.dimensions;
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var commonLength = trace._length;
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var opts = {};
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// 'c' for calculated, 'l' for linear,
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// only differ here for log axes, pass ldata to createMatrix as 'data'
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var cdata = opts.cdata = [];
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var ldata = opts.data = [];
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// keep track of visible dimensions
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var visibleDims = trace._visibleDims = [];
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var i, k, dim, xa, ya;
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function makeCalcdata(ax, dim) {
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// call makeCalcdata with fake input
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var ccol = ax.makeCalcdata({
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v: dim.values,
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vcalendar: trace.calendar
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}, 'v');
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for(var j = 0; j < ccol.length; j++) {
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ccol[j] = ccol[j] === BADNUM ? NaN : ccol[j];
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}
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cdata.push(ccol);
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ldata.push(ax.type === 'log' ? Lib.simpleMap(ccol, ax.c2l) : ccol);
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}
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for(i = 0; i < dimensions.length; i++) {
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dim = dimensions[i];
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if(dim.visible) {
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xa = AxisIDs.getFromId(gd, trace._diag[i][0]);
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ya = AxisIDs.getFromId(gd, trace._diag[i][1]);
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// if corresponding x & y axes don't have matching types, skip dim
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if(xa && ya && xa.type !== ya.type) {
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Lib.log('Skipping splom dimension ' + i + ' with conflicting axis types');
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continue;
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}
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if(xa) {
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makeCalcdata(xa, dim);
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if(ya && ya.type === 'category') {
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ya._categories = xa._categories.slice();
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}
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} else {
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// should not make it here, if both xa and ya undefined
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makeCalcdata(ya, dim);
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}
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visibleDims.push(i);
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}
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}
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calcColorscale(gd, trace);
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Lib.extendFlat(opts, convertMarkerStyle(trace));
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var visibleLength = cdata.length;
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var hasTooManyPoints = (visibleLength * commonLength) > TOO_MANY_POINTS;
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// Reuse SVG scatter axis expansion routine.
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// For graphs with very large number of points and array marker.size,
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// use average marker size instead to speed things up.
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var ppad;
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if(hasTooManyPoints) {
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ppad = 2 * (opts.sizeAvg || Math.max(opts.size, 3));
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} else {
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ppad = calcMarkerSize(trace, commonLength);
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}
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for(k = 0; k < visibleDims.length; k++) {
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i = visibleDims[k];
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dim = dimensions[i];
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xa = AxisIDs.getFromId(gd, trace._diag[i][0]) || {};
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ya = AxisIDs.getFromId(gd, trace._diag[i][1]) || {};
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calcAxisExpansion(gd, trace, xa, ya, cdata[k], cdata[k], ppad);
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}
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var scene = sceneUpdate(gd, trace);
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if(!scene.matrix) scene.matrix = true;
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scene.matrixOptions = opts;
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scene.selectedOptions = convertMarkerSelection(trace, trace.selected);
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scene.unselectedOptions = convertMarkerSelection(trace, trace.unselected);
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return [{x: false, y: false, t: {}, trace: trace}];
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};

‎src/traces/splom/helpers.js

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/**
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* Copyright 2012-2019, Plotly, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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exports.getDimIndex = function getDimIndex(trace, ax) {
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var axId = ax._id;
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var axLetter = axId.charAt(0);
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var ind = {x: 0, y: 1}[axLetter];
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var visibleDims = trace._visibleDims;
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for(var k = 0; k < visibleDims.length; k++) {
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var i = visibleDims[k];
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if(trace._diag[i][ind] === axId) return k;
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}
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return false;
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};

‎src/traces/splom/hover.js

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/**
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* Copyright 2012-2019, Plotly, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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var helpers = require('./helpers');
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var calcHover = require('../scattergl/hover').calcHover;
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function hoverPoints(pointData, xval, yval) {
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var cd = pointData.cd;
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var trace = cd[0].trace;
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var scene = pointData.scene;
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var cdata = scene.matrixOptions.cdata;
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var xa = pointData.xa;
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var ya = pointData.ya;
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var xpx = xa.c2p(xval);
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var ypx = ya.c2p(yval);
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var maxDistance = pointData.distance;
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var xi = helpers.getDimIndex(trace, xa);
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var yi = helpers.getDimIndex(trace, ya);
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if(xi === false || yi === false) return [pointData];
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var x = cdata[xi];
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var y = cdata[yi];
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var id, dxy;
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var minDist = maxDistance;
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for(var i = 0; i < x.length; i++) {
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var ptx = x[i];
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var pty = y[i];
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var dx = xa.c2p(ptx) - xpx;
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var dy = ya.c2p(pty) - ypx;
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var dist = Math.sqrt(dx * dx + dy * dy);
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if(dist < minDist) {
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minDist = dxy = dist;
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id = i;
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}
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}
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pointData.index = id;
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pointData.distance = minDist;
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pointData.dxy = dxy;
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if(id === undefined) return [pointData];
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calcHover(pointData, x, y, trace);
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return [pointData];
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}
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module.exports = {
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hoverPoints: hoverPoints
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};

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