1 | (function (global, factory) {
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2 | typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('vega-scale'), require('vega-util'), require('d3-time-format'), require('d3-format'), require('vega-dataflow'), require('d3-array'), require('d3-interpolate')) :
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3 | typeof define === 'function' && define.amd ? define(['exports', 'vega-scale', 'vega-util', 'd3-time-format', 'd3-format', 'vega-dataflow', 'd3-array', 'd3-interpolate'], factory) :
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4 | (global = global || self, factory((global.vega = global.vega || {}, global.vega.transforms = {}), global.vega, global.vega, global.d3, global.d3, global.vega, global.d3, global.d3));
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5 | }(this, function (exports, vegaScale, vegaUtil, d3TimeFormat, d3Format, vegaDataflow, d3Array, d3Interpolate) { 'use strict';
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6 |
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7 | |
8 |
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9 |
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10 |
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11 |
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12 |
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13 |
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14 | function tickCount(scale, count, minStep) {
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15 | var step;
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16 |
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17 | if (vegaUtil.isNumber(count)) {
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18 | if (scale.bins) {
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19 | count = Math.max(count, scale.bins.length);
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20 | }
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21 | if (minStep != null) {
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22 | count = Math.min(count, ~~(vegaUtil.span(scale.domain()) / minStep) || 1);
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23 | }
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24 | }
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25 |
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26 | if (vegaUtil.isObject(count)) {
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27 | step = count.step;
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28 | count = count.interval;
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29 | }
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30 |
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31 | if (vegaUtil.isString(count)) {
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32 | count = vegaScale.timeInterval(count, scale.type)
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33 | || vegaUtil.error('Only time and utc scales accept interval strings.');
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34 | if (step) count = count.every(step);
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35 | }
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36 |
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37 | return count;
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38 | }
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39 |
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40 | |
41 |
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42 |
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43 |
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44 |
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45 |
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46 |
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47 |
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48 | function validTicks(scale, ticks, count) {
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49 | var range = scale.range(),
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50 | lo = Math.floor(range[0]),
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51 | hi = Math.ceil(vegaUtil.peek(range));
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52 |
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53 | if (lo > hi) {
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54 | range = hi;
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55 | hi = lo;
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56 | lo = range;
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57 | }
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58 |
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59 | ticks = ticks.filter(function(v) {
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60 | v = scale(v);
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61 | return lo <= v && v <= hi;
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62 | });
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63 |
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64 | if (count > 0 && ticks.length > 1) {
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65 | var endpoints = [ticks[0], vegaUtil.peek(ticks)];
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66 | while (ticks.length > count && ticks.length >= 3) {
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67 | ticks = ticks.filter(function(_, i) { return !(i % 2); });
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68 | }
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69 | if (ticks.length < 3) {
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70 | ticks = endpoints;
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71 | }
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72 | }
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73 |
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74 | return ticks;
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75 | }
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76 |
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77 | |
78 |
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79 |
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80 |
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81 |
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82 |
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83 |
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84 |
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85 |
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86 | function tickValues(scale, count) {
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87 | return scale.bins ? validTicks(scale, scale.bins)
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88 | : scale.ticks ? scale.ticks(count)
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89 | : scale.domain();
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90 | }
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91 |
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92 | |
93 |
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94 |
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95 |
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96 |
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97 |
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98 |
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99 |
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100 |
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101 |
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102 |
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103 |
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104 |
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105 |
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106 | function tickFormat(scale, count, specifier, formatType) {
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107 | var format = scale.tickFormat ? scale.tickFormat(count, specifier)
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108 | : specifier && formatType === vegaScale.Time ? d3TimeFormat.timeFormat(specifier)
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109 | : specifier ? d3Format.format(specifier)
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110 | : String;
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111 |
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112 | if (vegaScale.isLogarithmic(scale.type)) {
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113 | var logfmt = variablePrecision(specifier);
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114 | format = scale.bins ? logfmt : filter(format, logfmt);
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115 | }
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116 |
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117 | return format;
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118 | }
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119 |
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120 | function filter(sourceFormat, targetFormat) {
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121 | return function(_) {
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122 | return sourceFormat(_) ? targetFormat(_) : '';
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123 | };
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124 | }
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125 |
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126 | function variablePrecision(specifier) {
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127 | var s = d3Format.formatSpecifier(specifier || ',');
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128 |
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129 | if (s.precision == null) {
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130 | s.precision = 12;
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131 | switch (s.type) {
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132 | case '%': s.precision -= 2; break;
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133 | case 'e': s.precision -= 1; break;
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134 | }
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135 | return trimZeroes(
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136 | d3Format.format(s),
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137 | d3Format.format('.1f')(1)[1]
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138 | );
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139 | } else {
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140 | return d3Format.format(s);
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141 | }
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142 | }
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143 |
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144 | function trimZeroes(format, decimalChar) {
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145 | return function(x) {
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146 | var str = format(x),
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147 | dec = str.indexOf(decimalChar),
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148 | idx, end;
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149 |
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150 | if (dec < 0) return str;
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151 |
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152 | idx = rightmostDigit(str, dec);
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153 | end = idx < str.length ? str.slice(idx) : '';
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154 | while (--idx > dec) if (str[idx] !== '0') { ++idx; break; }
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155 |
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156 | return str.slice(0, idx) + end;
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157 | };
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158 | }
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159 |
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160 | function rightmostDigit(str, dec) {
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161 | var i = str.lastIndexOf('e'), c;
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162 | if (i > 0) return i;
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163 | for (i=str.length; --i > dec;) {
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164 | c = str.charCodeAt(i);
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165 | if (c >= 48 && c <= 57) return i + 1;
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166 | }
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167 | }
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168 |
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169 | |
170 |
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171 |
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172 |
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173 |
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174 |
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175 |
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176 |
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177 |
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178 |
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179 |
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180 |
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181 |
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182 |
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183 |
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184 |
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185 | function AxisTicks(params) {
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186 | vegaDataflow.Transform.call(this, null, params);
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187 | }
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188 |
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189 | var prototype = vegaUtil.inherits(AxisTicks, vegaDataflow.Transform);
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190 |
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191 | prototype.transform = function(_, pulse) {
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192 | if (this.value && !_.modified()) {
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193 | return pulse.StopPropagation;
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194 | }
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195 |
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196 | var out = pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS),
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197 | ticks = this.value,
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198 | scale = _.scale,
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199 | tally = _.count == null ? (_.values ? _.values.length : 10) : _.count,
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200 | count = tickCount(scale, tally, _.minstep),
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201 | format = _.format || tickFormat(scale, count, _.formatSpecifier, _.formatType),
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202 | values = _.values ? validTicks(scale, _.values, count) : tickValues(scale, count);
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203 |
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204 | if (ticks) out.rem = ticks;
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205 |
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206 | ticks = values.map(function(value, i) {
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207 | return vegaDataflow.ingest({
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208 | index: i / (values.length - 1 || 1),
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209 | value: value,
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210 | label: format(value)
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211 | });
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212 | });
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213 |
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214 | if (_.extra && ticks.length) {
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215 |
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216 |
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217 | ticks.push(vegaDataflow.ingest({
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218 | index: -1,
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219 | extra: {value: ticks[0].value},
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220 | label: ''
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221 | }));
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222 | }
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223 |
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224 | out.source = ticks;
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225 | out.add = ticks;
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226 | this.value = ticks;
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227 |
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228 | return out;
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229 | };
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230 |
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231 | |
232 |
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233 |
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234 |
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235 |
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236 |
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237 |
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238 | function DataJoin(params) {
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239 | vegaDataflow.Transform.call(this, null, params);
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240 | }
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241 |
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242 | var prototype$1 = vegaUtil.inherits(DataJoin, vegaDataflow.Transform);
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243 |
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244 | function defaultItemCreate() {
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245 | return vegaDataflow.ingest({});
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246 | }
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247 |
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248 | function isExit(t) {
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249 | return t.exit;
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250 | }
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251 |
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252 | prototype$1.transform = function(_, pulse) {
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253 | var df = pulse.dataflow,
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254 | out = pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS),
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255 | item = _.item || defaultItemCreate,
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256 | key = _.key || vegaDataflow.tupleid,
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257 | map = this.value;
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258 |
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259 |
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260 |
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261 | if (vegaUtil.isArray(out.encode)) {
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262 | out.encode = null;
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263 | }
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264 |
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265 | if (map && (_.modified('key') || pulse.modified(key))) {
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266 | vegaUtil.error('DataJoin does not support modified key function or fields.');
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267 | }
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268 |
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269 | if (!map) {
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270 | pulse = pulse.addAll();
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271 | this.value = map = vegaUtil.fastmap().test(isExit);
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272 | map.lookup = function(t) { return map.get(key(t)); };
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273 | }
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274 |
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275 | pulse.visit(pulse.ADD, function(t) {
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276 | var k = key(t),
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277 | x = map.get(k);
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278 |
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279 | if (x) {
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280 | if (x.exit) {
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281 | map.empty--;
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282 | out.add.push(x);
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283 | } else {
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284 | out.mod.push(x);
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285 | }
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286 | } else {
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287 | map.set(k, (x = item(t)));
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288 | out.add.push(x);
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289 | }
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290 |
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291 | x.datum = t;
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292 | x.exit = false;
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293 | });
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294 |
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295 | pulse.visit(pulse.MOD, function(t) {
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296 | var k = key(t),
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297 | x = map.get(k);
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298 |
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299 | if (x) {
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300 | x.datum = t;
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301 | out.mod.push(x);
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302 | }
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303 | });
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304 |
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305 | pulse.visit(pulse.REM, function(t) {
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306 | var k = key(t),
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307 | x = map.get(k);
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308 |
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309 | if (t === x.datum && !x.exit) {
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310 | out.rem.push(x);
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311 | x.exit = true;
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312 | ++map.empty;
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313 | }
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314 | });
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315 |
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316 | if (pulse.changed(pulse.ADD_MOD)) out.modifies('datum');
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317 |
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318 | if (_.clean && map.empty > df.cleanThreshold) df.runAfter(map.clean);
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319 |
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320 | return out;
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321 | };
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322 |
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323 | |
324 |
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325 |
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326 |
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327 |
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328 |
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329 |
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330 |
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331 |
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332 |
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333 |
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334 |
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335 | function Encode(params) {
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336 | vegaDataflow.Transform.call(this, null, params);
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337 | }
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338 |
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339 | var prototype$2 = vegaUtil.inherits(Encode, vegaDataflow.Transform);
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340 |
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341 | prototype$2.transform = function(_, pulse) {
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342 | var out = pulse.fork(pulse.ADD_REM),
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343 | fmod = _.mod || false,
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344 | encoders = _.encoders,
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345 | encode = pulse.encode;
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346 |
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347 |
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348 |
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349 |
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350 | if (vegaUtil.isArray(encode)) {
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351 | if (out.changed() || encode.every(function(e) { return encoders[e]; })) {
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352 | encode = encode[0];
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353 | out.encode = null;
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354 | } else {
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355 | return pulse.StopPropagation;
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356 | }
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357 | }
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358 |
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359 |
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360 | var reenter = encode === 'enter',
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361 | update = encoders.update || vegaUtil.falsy,
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362 | enter = encoders.enter || vegaUtil.falsy,
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363 | exit = encoders.exit || vegaUtil.falsy,
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364 | set = (encode && !reenter ? encoders[encode] : update) || vegaUtil.falsy;
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365 |
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366 | if (pulse.changed(pulse.ADD)) {
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367 | pulse.visit(pulse.ADD, function(t) { enter(t, _); update(t, _); });
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368 | out.modifies(enter.output);
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369 | out.modifies(update.output);
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370 | if (set !== vegaUtil.falsy && set !== update) {
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371 | pulse.visit(pulse.ADD, function(t) { set(t, _); });
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372 | out.modifies(set.output);
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373 | }
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374 | }
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375 |
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376 | if (pulse.changed(pulse.REM) && exit !== vegaUtil.falsy) {
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377 | pulse.visit(pulse.REM, function(t) { exit(t, _); });
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378 | out.modifies(exit.output);
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379 | }
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380 |
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381 | if (reenter || set !== vegaUtil.falsy) {
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382 | var flag = pulse.MOD | (_.modified() ? pulse.REFLOW : 0);
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383 | if (reenter) {
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384 | pulse.visit(flag, function(t) {
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385 | var mod = enter(t, _) || fmod;
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386 | if (set(t, _) || mod) out.mod.push(t);
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387 | });
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388 | if (out.mod.length) out.modifies(enter.output);
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389 | } else {
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390 | pulse.visit(flag, function(t) {
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391 | if (set(t, _) || fmod) out.mod.push(t);
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392 | });
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393 | }
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394 | if (out.mod.length) out.modifies(set.output);
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395 | }
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396 |
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397 | return out.changed() ? out : pulse.StopPropagation;
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398 | };
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399 |
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400 | var Symbols = 'symbol';
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401 | var Discrete = 'discrete';
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402 | var Gradient = 'gradient';
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403 |
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404 | const symbols = {
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405 | [vegaScale.Quantile]: 'quantiles',
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406 | [vegaScale.Quantize]: 'thresholds',
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407 | [vegaScale.Threshold]: 'domain'
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408 | };
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409 |
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410 | const formats = {
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411 | [vegaScale.Quantile]: 'quantiles',
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412 | [vegaScale.Quantize]: 'domain'
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413 | };
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414 |
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415 | function labelValues(scale, count) {
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416 | return scale.bins ? binValues(scale.bins)
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417 | : symbols[scale.type] ? thresholdValues(scale[symbols[scale.type]]())
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418 | : tickValues(scale, count);
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419 | }
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420 |
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421 | function thresholdFormat(scale, specifier) {
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422 | var _ = scale[formats[scale.type]](),
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423 | n = _.length,
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424 | d = n > 1 ? _[1] - _[0] : _[0], i;
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425 |
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426 | for (i=1; i<n; ++i) {
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427 | d = Math.min(d, _[i] - _[i-1]);
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428 | }
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429 |
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430 |
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431 | return vegaScale.tickFormat(0, d, 3 * 10, specifier);
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432 | }
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433 |
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434 | function thresholdValues(thresholds) {
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435 | const values = [-Infinity].concat(thresholds);
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436 | values.max = +Infinity;
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437 |
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438 | return values;
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439 | }
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440 |
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441 | function binValues(bins) {
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442 | const values = bins.slice(0, -1);
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443 | values.max = vegaUtil.peek(bins);
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444 |
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445 | return values;
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446 | }
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447 |
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448 | function isDiscreteRange(scale) {
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449 | return symbols[scale.type] || scale.bins;
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450 | }
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451 |
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452 | function labelFormat(scale, count, type, specifier, formatType) {
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453 | const format = formats[scale.type] && formatType !== vegaScale.Time
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454 | ? thresholdFormat(scale, specifier)
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455 | : tickFormat(scale, count, specifier, formatType);
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456 |
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457 | return type === Symbols && isDiscreteRange(scale) ? formatRange(format)
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458 | : type === Discrete ? formatDiscrete(format)
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459 | : formatPoint(format);
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460 | }
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461 |
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462 | function formatRange(format) {
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463 | return function(value, index, array) {
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464 | var limit = array[index + 1] || array.max || +Infinity,
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465 | lo = formatValue(value, format),
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466 | hi = formatValue(limit, format);
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467 | return lo && hi ? lo + '\u2013' + hi : hi ? '< ' + hi : '\u2265 ' + lo;
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468 | };
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469 | }
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470 |
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471 | function formatDiscrete(format) {
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472 | return function(value, index) {
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473 | return index ? format(value) : null;
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474 | }
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475 | }
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476 |
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477 | function formatPoint(format) {
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478 | return function(value) {
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479 | return format(value);
|
480 | };
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481 | }
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482 |
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483 | function formatValue(value, format) {
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484 | return isFinite(value) ? format(value) : null;
|
485 | }
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486 |
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487 | function labelFraction(scale) {
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488 | var domain = scale.domain(),
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489 | count = domain.length - 1,
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490 | lo = +domain[0],
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491 | hi = +vegaUtil.peek(domain),
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492 | span = hi - lo;
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493 |
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494 | if (scale.type === vegaScale.Threshold) {
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495 | var adjust = count ? span / count : 0.1;
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496 | lo -= adjust;
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497 | hi += adjust;
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498 | span = hi - lo;
|
499 | }
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500 |
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501 | return function(value) {
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502 | return (value - lo) / span;
|
503 | };
|
504 | }
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505 |
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506 | |
507 |
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508 |
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509 |
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510 |
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511 |
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512 |
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513 |
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514 |
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515 |
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516 |
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517 |
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518 |
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519 |
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520 |
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521 |
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522 |
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523 |
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524 | function LegendEntries(params) {
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525 | vegaDataflow.Transform.call(this, [], params);
|
526 | }
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527 |
|
528 | var prototype$3 = vegaUtil.inherits(LegendEntries, vegaDataflow.Transform);
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529 |
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530 | prototype$3.transform = function(_, pulse) {
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531 | if (this.value != null && !_.modified()) {
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532 | return pulse.StopPropagation;
|
533 | }
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534 |
|
535 | var out = pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS),
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536 | items = this.value,
|
537 | type = _.type || Symbols,
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538 | scale = _.scale,
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539 | limit = +_.limit,
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540 | count = tickCount(scale, _.count == null ? 5 : _.count, _.minstep),
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541 | format = _.format || labelFormat(scale, count, type, _.formatSpecifier, _.formatType),
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542 | values = _.values || labelValues(scale, count),
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543 | domain, fraction, size, offset, ellipsis;
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544 |
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545 | if (items) out.rem = items;
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546 |
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547 | if (type === Symbols) {
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548 | if (limit && values.length > limit) {
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549 | pulse.dataflow.warn('Symbol legend count exceeds limit, filtering items.');
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550 | items = values.slice(0, limit - 1);
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551 | ellipsis = true;
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552 | } else {
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553 | items = values;
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554 | }
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555 |
|
556 | if (vegaUtil.isFunction(size = _.size)) {
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557 |
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558 | if (!_.values && scale(items[0]) === 0) {
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559 | items = items.slice(1);
|
560 | }
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561 |
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562 | offset = items.reduce(function(max, value) {
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563 | return Math.max(max, size(value, _));
|
564 | }, 0);
|
565 | } else {
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566 | size = vegaUtil.constant(offset = size || 8);
|
567 | }
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568 |
|
569 | items = items.map(function(value, index) {
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570 | return vegaDataflow.ingest({
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571 | index: index,
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572 | label: format(value, index, values),
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573 | value: value,
|
574 | offset: offset,
|
575 | size: size(value, _)
|
576 | });
|
577 | });
|
578 |
|
579 | if (ellipsis) {
|
580 | ellipsis = values[items.length];
|
581 | items.push(vegaDataflow.ingest({
|
582 | index: items.length,
|
583 | label: `\u2026${values.length-items.length} entries`,
|
584 | value: ellipsis,
|
585 | offset: offset,
|
586 | size: size(ellipsis, _)
|
587 | }));
|
588 | }
|
589 | }
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590 |
|
591 | else if (type === Gradient) {
|
592 | domain = scale.domain(),
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593 | fraction = vegaScale.scaleFraction(scale, domain[0], vegaUtil.peek(domain));
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594 |
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595 |
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596 |
|
597 | if (values.length < 3 && !_.values && domain[0] !== vegaUtil.peek(domain)) {
|
598 | values = [domain[0], vegaUtil.peek(domain)];
|
599 | }
|
600 |
|
601 | items = values.map(function(value, index) {
|
602 | return vegaDataflow.ingest({
|
603 | index: index,
|
604 | label: format(value, index, values),
|
605 | value: value,
|
606 | perc: fraction(value)
|
607 | });
|
608 | });
|
609 | }
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610 |
|
611 | else {
|
612 | size = values.length - 1;
|
613 | fraction = labelFraction(scale);
|
614 |
|
615 | items = values.map(function(value, index) {
|
616 | return vegaDataflow.ingest({
|
617 | index: index,
|
618 | label: format(value, index, values),
|
619 | value: value,
|
620 | perc: index ? fraction(value) : 0,
|
621 | perc2: index === size ? 1 : fraction(values[index+1])
|
622 | });
|
623 | });
|
624 | }
|
625 |
|
626 | out.source = items;
|
627 | out.add = items;
|
628 | this.value = items;
|
629 |
|
630 | return out;
|
631 | };
|
632 |
|
633 | var Paths = vegaUtil.fastmap({
|
634 | 'line': line,
|
635 | 'line-radial': lineR,
|
636 | 'arc': arc,
|
637 | 'arc-radial': arcR,
|
638 | 'curve': curve,
|
639 | 'curve-radial': curveR,
|
640 | 'orthogonal-horizontal': orthoX,
|
641 | 'orthogonal-vertical': orthoY,
|
642 | 'orthogonal-radial': orthoR,
|
643 | 'diagonal-horizontal': diagonalX,
|
644 | 'diagonal-vertical': diagonalY,
|
645 | 'diagonal-radial': diagonalR
|
646 | });
|
647 |
|
648 | function sourceX(t) { return t.source.x; }
|
649 | function sourceY(t) { return t.source.y; }
|
650 | function targetX(t) { return t.target.x; }
|
651 | function targetY(t) { return t.target.y; }
|
652 |
|
653 | |
654 |
|
655 |
|
656 |
|
657 |
|
658 | function LinkPath(params) {
|
659 | vegaDataflow.Transform.call(this, {}, params);
|
660 | }
|
661 |
|
662 | LinkPath.Definition = {
|
663 | "type": "LinkPath",
|
664 | "metadata": {"modifies": true},
|
665 | "params": [
|
666 | { "name": "sourceX", "type": "field", "default": "source.x" },
|
667 | { "name": "sourceY", "type": "field", "default": "source.y" },
|
668 | { "name": "targetX", "type": "field", "default": "target.x" },
|
669 | { "name": "targetY", "type": "field", "default": "target.y" },
|
670 | { "name": "orient", "type": "enum", "default": "vertical",
|
671 | "values": ["horizontal", "vertical", "radial"] },
|
672 | { "name": "shape", "type": "enum", "default": "line",
|
673 | "values": ["line", "arc", "curve", "diagonal", "orthogonal"] },
|
674 | { "name": "require", "type": "signal" },
|
675 | { "name": "as", "type": "string", "default": "path" }
|
676 | ]
|
677 | };
|
678 |
|
679 | var prototype$4 = vegaUtil.inherits(LinkPath, vegaDataflow.Transform);
|
680 |
|
681 | prototype$4.transform = function(_, pulse) {
|
682 | var sx = _.sourceX || sourceX,
|
683 | sy = _.sourceY || sourceY,
|
684 | tx = _.targetX || targetX,
|
685 | ty = _.targetY || targetY,
|
686 | as = _.as || 'path',
|
687 | orient = _.orient || 'vertical',
|
688 | shape = _.shape || 'line',
|
689 | path = Paths.get(shape + '-' + orient) || Paths.get(shape);
|
690 |
|
691 | if (!path) {
|
692 | vegaUtil.error('LinkPath unsupported type: ' + _.shape
|
693 | + (_.orient ? '-' + _.orient : ''));
|
694 | }
|
695 |
|
696 | pulse.visit(pulse.SOURCE, function(t) {
|
697 | t[as] = path(sx(t), sy(t), tx(t), ty(t));
|
698 | });
|
699 |
|
700 | return pulse.reflow(_.modified()).modifies(as);
|
701 | };
|
702 |
|
703 |
|
704 |
|
705 | function line(sx, sy, tx, ty) {
|
706 | return 'M' + sx + ',' + sy +
|
707 | 'L' + tx + ',' + ty;
|
708 | }
|
709 |
|
710 | function lineR(sa, sr, ta, tr) {
|
711 | return line(
|
712 | sr * Math.cos(sa), sr * Math.sin(sa),
|
713 | tr * Math.cos(ta), tr * Math.sin(ta)
|
714 | );
|
715 | }
|
716 |
|
717 | function arc(sx, sy, tx, ty) {
|
718 | var dx = tx - sx,
|
719 | dy = ty - sy,
|
720 | rr = Math.sqrt(dx * dx + dy * dy) / 2,
|
721 | ra = 180 * Math.atan2(dy, dx) / Math.PI;
|
722 | return 'M' + sx + ',' + sy +
|
723 | 'A' + rr + ',' + rr +
|
724 | ' ' + ra + ' 0 1' +
|
725 | ' ' + tx + ',' + ty;
|
726 | }
|
727 |
|
728 | function arcR(sa, sr, ta, tr) {
|
729 | return arc(
|
730 | sr * Math.cos(sa), sr * Math.sin(sa),
|
731 | tr * Math.cos(ta), tr * Math.sin(ta)
|
732 | );
|
733 | }
|
734 |
|
735 | function curve(sx, sy, tx, ty) {
|
736 | var dx = tx - sx,
|
737 | dy = ty - sy,
|
738 | ix = 0.2 * (dx + dy),
|
739 | iy = 0.2 * (dy - dx);
|
740 | return 'M' + sx + ',' + sy +
|
741 | 'C' + (sx+ix) + ',' + (sy+iy) +
|
742 | ' ' + (tx+iy) + ',' + (ty-ix) +
|
743 | ' ' + tx + ',' + ty;
|
744 | }
|
745 |
|
746 | function curveR(sa, sr, ta, tr) {
|
747 | return curve(
|
748 | sr * Math.cos(sa), sr * Math.sin(sa),
|
749 | tr * Math.cos(ta), tr * Math.sin(ta)
|
750 | );
|
751 | }
|
752 |
|
753 | function orthoX(sx, sy, tx, ty) {
|
754 | return 'M' + sx + ',' + sy +
|
755 | 'V' + ty + 'H' + tx;
|
756 | }
|
757 |
|
758 | function orthoY(sx, sy, tx, ty) {
|
759 | return 'M' + sx + ',' + sy +
|
760 | 'H' + tx + 'V' + ty;
|
761 | }
|
762 |
|
763 | function orthoR(sa, sr, ta, tr) {
|
764 | var sc = Math.cos(sa),
|
765 | ss = Math.sin(sa),
|
766 | tc = Math.cos(ta),
|
767 | ts = Math.sin(ta),
|
768 | sf = Math.abs(ta - sa) > Math.PI ? ta <= sa : ta > sa;
|
769 | return 'M' + (sr*sc) + ',' + (sr*ss) +
|
770 | 'A' + sr + ',' + sr + ' 0 0,' + (sf?1:0) +
|
771 | ' ' + (sr*tc) + ',' + (sr*ts) +
|
772 | 'L' + (tr*tc) + ',' + (tr*ts);
|
773 | }
|
774 |
|
775 | function diagonalX(sx, sy, tx, ty) {
|
776 | var m = (sx + tx) / 2;
|
777 | return 'M' + sx + ',' + sy +
|
778 | 'C' + m + ',' + sy +
|
779 | ' ' + m + ',' + ty +
|
780 | ' ' + tx + ',' + ty;
|
781 | }
|
782 |
|
783 | function diagonalY(sx, sy, tx, ty) {
|
784 | var m = (sy + ty) / 2;
|
785 | return 'M' + sx + ',' + sy +
|
786 | 'C' + sx + ',' + m +
|
787 | ' ' + tx + ',' + m +
|
788 | ' ' + tx + ',' + ty;
|
789 | }
|
790 |
|
791 | function diagonalR(sa, sr, ta, tr) {
|
792 | var sc = Math.cos(sa),
|
793 | ss = Math.sin(sa),
|
794 | tc = Math.cos(ta),
|
795 | ts = Math.sin(ta),
|
796 | mr = (sr + tr) / 2;
|
797 | return 'M' + (sr*sc) + ',' + (sr*ss) +
|
798 | 'C' + (mr*sc) + ',' + (mr*ss) +
|
799 | ' ' + (mr*tc) + ',' + (mr*ts) +
|
800 | ' ' + (tr*tc) + ',' + (tr*ts);
|
801 | }
|
802 |
|
803 | |
804 |
|
805 |
|
806 |
|
807 |
|
808 |
|
809 |
|
810 |
|
811 |
|
812 | function Pie(params) {
|
813 | vegaDataflow.Transform.call(this, null, params);
|
814 | }
|
815 |
|
816 | Pie.Definition = {
|
817 | "type": "Pie",
|
818 | "metadata": {"modifies": true},
|
819 | "params": [
|
820 | { "name": "field", "type": "field" },
|
821 | { "name": "startAngle", "type": "number", "default": 0 },
|
822 | { "name": "endAngle", "type": "number", "default": 6.283185307179586 },
|
823 | { "name": "sort", "type": "boolean", "default": false },
|
824 | { "name": "as", "type": "string", "array": true, "length": 2, "default": ["startAngle", "endAngle"] }
|
825 | ]
|
826 | };
|
827 |
|
828 | var prototype$5 = vegaUtil.inherits(Pie, vegaDataflow.Transform);
|
829 |
|
830 | prototype$5.transform = function(_, pulse) {
|
831 | var as = _.as || ['startAngle', 'endAngle'],
|
832 | startAngle = as[0],
|
833 | endAngle = as[1],
|
834 | field = _.field || vegaUtil.one,
|
835 | start = _.startAngle || 0,
|
836 | stop = _.endAngle != null ? _.endAngle : 2 * Math.PI,
|
837 | data = pulse.source,
|
838 | values = data.map(field),
|
839 | n = values.length,
|
840 | a = start,
|
841 | k = (stop - start) / d3Array.sum(values),
|
842 | index = d3Array.range(n),
|
843 | i, t, v;
|
844 |
|
845 | if (_.sort) {
|
846 | index.sort(function(a, b) {
|
847 | return values[a] - values[b];
|
848 | });
|
849 | }
|
850 |
|
851 | for (i=0; i<n; ++i) {
|
852 | v = values[index[i]];
|
853 | t = data[index[i]];
|
854 | t[startAngle] = a;
|
855 | t[endAngle] = (a += v * k);
|
856 | }
|
857 |
|
858 | this.value = values;
|
859 | return pulse.reflow(_.modified()).modifies(as);
|
860 | };
|
861 |
|
862 | var DEFAULT_COUNT = 5;
|
863 |
|
864 | function includeZero(scale) {
|
865 | const type = scale.type;
|
866 | return !scale.bins && (
|
867 | type === vegaScale.Linear || type === vegaScale.Pow || type === vegaScale.Sqrt
|
868 | );
|
869 | }
|
870 |
|
871 | function includePad(type) {
|
872 | return vegaScale.isContinuous(type) && type !== vegaScale.Sequential;
|
873 | }
|
874 |
|
875 | var SKIP = vegaUtil.toSet([
|
876 | 'set', 'modified', 'clear', 'type', 'scheme', 'schemeExtent', 'schemeCount',
|
877 | 'domain', 'domainMin', 'domainMid', 'domainMax',
|
878 | 'domainRaw', 'domainImplicit', 'nice', 'zero', 'bins',
|
879 | 'range', 'rangeStep', 'round', 'reverse', 'interpolate', 'interpolateGamma'
|
880 | ]);
|
881 |
|
882 | |
883 |
|
884 |
|
885 |
|
886 |
|
887 | function Scale(params) {
|
888 | vegaDataflow.Transform.call(this, null, params);
|
889 | this.modified(true);
|
890 | }
|
891 |
|
892 | var prototype$6 = vegaUtil.inherits(Scale, vegaDataflow.Transform);
|
893 |
|
894 | prototype$6.transform = function(_, pulse) {
|
895 | var df = pulse.dataflow,
|
896 | scale = this.value,
|
897 | key = scaleKey(_);
|
898 |
|
899 | if (!scale || key !== scale.type) {
|
900 | this.value = scale = vegaScale.scale(key)();
|
901 | }
|
902 |
|
903 | for (key in _) if (!SKIP[key]) {
|
904 |
|
905 | if (key === 'padding' && includePad(scale.type)) continue;
|
906 |
|
907 | vegaUtil.isFunction(scale[key])
|
908 | ? scale[key](_[key])
|
909 | : df.warn('Unsupported scale property: ' + key);
|
910 | }
|
911 |
|
912 | configureRange(scale, _,
|
913 | configureBins(scale, _, configureDomain(scale, _, df))
|
914 | );
|
915 |
|
916 | return pulse.fork(pulse.NO_SOURCE | pulse.NO_FIELDS);
|
917 | };
|
918 |
|
919 | function scaleKey(_) {
|
920 | var t = _.type, d = '', n;
|
921 |
|
922 |
|
923 | if (t === vegaScale.Sequential) return vegaScale.Sequential + '-' + vegaScale.Linear;
|
924 |
|
925 | if (isContinuousColor(_)) {
|
926 | n = _.rawDomain ? _.rawDomain.length
|
927 | : _.domain ? _.domain.length + +(_.domainMid != null)
|
928 | : 0;
|
929 | d = n === 2 ? vegaScale.Sequential + '-'
|
930 | : n === 3 ? vegaScale.Diverging + '-'
|
931 | : '';
|
932 | }
|
933 |
|
934 | return ((d + t) || vegaScale.Linear).toLowerCase();
|
935 | }
|
936 |
|
937 | function isContinuousColor(_) {
|
938 | const t = _.type;
|
939 | return vegaScale.isContinuous(t) && t !== vegaScale.Time && t !== vegaScale.UTC && (
|
940 | _.scheme || _.range && _.range.length && _.range.every(vegaUtil.isString)
|
941 | );
|
942 | }
|
943 |
|
944 | function configureDomain(scale, _, df) {
|
945 |
|
946 | var raw = rawDomain(scale, _.domainRaw, df);
|
947 | if (raw > -1) return raw;
|
948 |
|
949 | var domain = _.domain,
|
950 | type = scale.type,
|
951 | zero = _.zero || (_.zero === undefined && includeZero(scale)),
|
952 | n, mid;
|
953 |
|
954 | if (!domain) return 0;
|
955 |
|
956 |
|
957 | if (includePad(type) && _.padding && domain[0] !== vegaUtil.peek(domain)) {
|
958 | domain = padDomain(type, domain, _.range, _.padding, _.exponent, _.constant);
|
959 | }
|
960 |
|
961 |
|
962 | if (zero || _.domainMin != null || _.domainMax != null || _.domainMid != null) {
|
963 | n = ((domain = domain.slice()).length - 1) || 1;
|
964 | if (zero) {
|
965 | if (domain[0] > 0) domain[0] = 0;
|
966 | if (domain[n] < 0) domain[n] = 0;
|
967 | }
|
968 | if (_.domainMin != null) domain[0] = _.domainMin;
|
969 | if (_.domainMax != null) domain[n] = _.domainMax;
|
970 |
|
971 | if (_.domainMid != null) {
|
972 | mid = _.domainMid;
|
973 | if (mid < domain[0] || mid > domain[n]) {
|
974 | df.warn('Scale domainMid exceeds domain min or max.', mid);
|
975 | }
|
976 | domain.splice(n, 0, mid);
|
977 | }
|
978 | }
|
979 |
|
980 |
|
981 | scale.domain(domainCheck(type, domain, df));
|
982 |
|
983 |
|
984 |
|
985 | if (type === vegaScale.Ordinal) {
|
986 | scale.unknown(_.domainImplicit ? vegaScale.scaleImplicit : undefined);
|
987 | }
|
988 |
|
989 |
|
990 | if (_.nice && scale.nice) {
|
991 | scale.nice((_.nice !== true && tickCount(scale, _.nice)) || null);
|
992 | }
|
993 |
|
994 |
|
995 | return domain.length;
|
996 | }
|
997 |
|
998 | function rawDomain(scale, raw, df) {
|
999 | if (raw) {
|
1000 | scale.domain(domainCheck(scale.type, raw, df));
|
1001 | return raw.length;
|
1002 | } else {
|
1003 | return -1;
|
1004 | }
|
1005 | }
|
1006 |
|
1007 | function padDomain(type, domain, range, pad, exponent, constant) {
|
1008 | var span = Math.abs(vegaUtil.peek(range) - range[0]),
|
1009 | frac = span / (span - 2 * pad),
|
1010 | d = type === vegaScale.Log ? vegaUtil.zoomLog(domain, null, frac)
|
1011 | : type === vegaScale.Sqrt ? vegaUtil.zoomPow(domain, null, frac, 0.5)
|
1012 | : type === vegaScale.Pow ? vegaUtil.zoomPow(domain, null, frac, exponent || 1)
|
1013 | : type === vegaScale.Symlog ? vegaUtil.zoomSymlog(domain, null, frac, constant || 1)
|
1014 | : vegaUtil.zoomLinear(domain, null, frac);
|
1015 |
|
1016 | domain = domain.slice();
|
1017 | domain[0] = d[0];
|
1018 | domain[domain.length-1] = d[1];
|
1019 | return domain;
|
1020 | }
|
1021 |
|
1022 | function domainCheck(type, domain, df) {
|
1023 | if (vegaScale.isLogarithmic(type)) {
|
1024 |
|
1025 |
|
1026 | var s = Math.abs(domain.reduce(function(s, v) {
|
1027 | return s + (v < 0 ? -1 : v > 0 ? 1 : 0);
|
1028 | }, 0));
|
1029 |
|
1030 | if (s !== domain.length) {
|
1031 | df.warn('Log scale domain includes zero: ' + vegaUtil.stringValue(domain));
|
1032 | }
|
1033 | }
|
1034 | return domain;
|
1035 | }
|
1036 |
|
1037 | function configureBins(scale, _, count) {
|
1038 | let bins = _.bins;
|
1039 |
|
1040 | if (bins && !vegaUtil.isArray(bins)) {
|
1041 |
|
1042 | let domain = scale.domain(),
|
1043 | lo = domain[0],
|
1044 | hi = vegaUtil.peek(domain),
|
1045 | start = bins.start == null ? lo : bins.start,
|
1046 | stop = bins.stop == null ? hi : bins.stop,
|
1047 | step = bins.step;
|
1048 |
|
1049 | if (!step) vegaUtil.error('Scale bins parameter missing step property.');
|
1050 | if (start < lo) start = step * Math.ceil(lo / step);
|
1051 | if (stop > hi) stop = step * Math.floor(hi / step);
|
1052 | bins = d3Array.range(start, stop + step / 2, step);
|
1053 | }
|
1054 |
|
1055 | if (bins) {
|
1056 |
|
1057 | scale.bins = bins;
|
1058 | } else if (scale.bins) {
|
1059 |
|
1060 | delete scale.bins;
|
1061 | }
|
1062 |
|
1063 |
|
1064 | if (scale.type === vegaScale.BinOrdinal) {
|
1065 | if (!bins) {
|
1066 |
|
1067 | scale.bins = scale.domain();
|
1068 | } else if (!_.domain && !_.domainRaw) {
|
1069 |
|
1070 | scale.domain(bins);
|
1071 | count = bins.length;
|
1072 | }
|
1073 | }
|
1074 |
|
1075 |
|
1076 | return count;
|
1077 | }
|
1078 |
|
1079 | function configureRange(scale, _, count) {
|
1080 | var type = scale.type,
|
1081 | round = _.round || false,
|
1082 | range = _.range;
|
1083 |
|
1084 |
|
1085 | if (_.rangeStep != null) {
|
1086 | range = configureRangeStep(type, _, count);
|
1087 | }
|
1088 |
|
1089 |
|
1090 | else if (_.scheme) {
|
1091 | range = configureScheme(type, _, count);
|
1092 | if (vegaUtil.isFunction(range)) {
|
1093 | if (scale.interpolator) {
|
1094 | return scale.interpolator(range);
|
1095 | } else {
|
1096 | vegaUtil.error(`Scale type ${type} does not support interpolating color schemes.`);
|
1097 | }
|
1098 | }
|
1099 | }
|
1100 |
|
1101 |
|
1102 | if (range && vegaScale.isInterpolating(type)) {
|
1103 | return scale.interpolator(
|
1104 | vegaScale.interpolateColors(flip(range, _.reverse), _.interpolate, _.interpolateGamma)
|
1105 | );
|
1106 | }
|
1107 |
|
1108 |
|
1109 | if (range && _.interpolate && scale.interpolate) {
|
1110 | scale.interpolate(vegaScale.interpolate(_.interpolate, _.interpolateGamma));
|
1111 | } else if (vegaUtil.isFunction(scale.round)) {
|
1112 | scale.round(round);
|
1113 | } else if (vegaUtil.isFunction(scale.rangeRound)) {
|
1114 | scale.interpolate(round ? d3Interpolate.interpolateRound : d3Interpolate.interpolate);
|
1115 | }
|
1116 |
|
1117 | if (range) scale.range(flip(range, _.reverse));
|
1118 | }
|
1119 |
|
1120 | function configureRangeStep(type, _, count) {
|
1121 | if (type !== vegaScale.Band && type !== vegaScale.Point) {
|
1122 | vegaUtil.error('Only band and point scales support rangeStep.');
|
1123 | }
|
1124 |
|
1125 |
|
1126 | var outer = (_.paddingOuter != null ? _.paddingOuter : _.padding) || 0,
|
1127 | inner = type === vegaScale.Point ? 1
|
1128 | : ((_.paddingInner != null ? _.paddingInner : _.padding) || 0);
|
1129 | return [0, _.rangeStep * vegaScale.bandSpace(count, inner, outer)];
|
1130 | }
|
1131 |
|
1132 | function configureScheme(type, _, count) {
|
1133 | var extent = _.schemeExtent,
|
1134 | name, scheme;
|
1135 |
|
1136 | if (vegaUtil.isArray(_.scheme)) {
|
1137 | scheme = vegaScale.interpolateColors(_.scheme, _.interpolate, _.interpolateGamma);
|
1138 | } else {
|
1139 | name = _.scheme.toLowerCase();
|
1140 | scheme = vegaScale.scheme(name);
|
1141 | if (!scheme) vegaUtil.error(`Unrecognized scheme name: ${_.scheme}`);
|
1142 | }
|
1143 |
|
1144 |
|
1145 | count = (type === vegaScale.Threshold) ? count + 1
|
1146 | : (type === vegaScale.BinOrdinal) ? count - 1
|
1147 | : (type === vegaScale.Quantile || type === vegaScale.Quantize) ? (+_.schemeCount || DEFAULT_COUNT)
|
1148 | : count;
|
1149 |
|
1150 |
|
1151 | return vegaScale.isInterpolating(type) ? adjustScheme(scheme, extent, _.reverse)
|
1152 | : vegaUtil.isFunction(scheme) ? vegaScale.quantizeInterpolator(adjustScheme(scheme, extent), count)
|
1153 | : type === vegaScale.Ordinal ? scheme : scheme.slice(0, count);
|
1154 | }
|
1155 |
|
1156 | function adjustScheme(scheme, extent, reverse) {
|
1157 | return (vegaUtil.isFunction(scheme) && (extent || reverse))
|
1158 | ? vegaScale.interpolateRange(scheme, flip(extent || [0, 1], reverse))
|
1159 | : scheme;
|
1160 | }
|
1161 |
|
1162 | function flip(array, reverse) {
|
1163 | return reverse ? array.slice().reverse() : array;
|
1164 | }
|
1165 |
|
1166 | |
1167 |
|
1168 |
|
1169 |
|
1170 |
|
1171 |
|
1172 |
|
1173 | function SortItems(params) {
|
1174 | vegaDataflow.Transform.call(this, null, params);
|
1175 | }
|
1176 |
|
1177 | var prototype$7 = vegaUtil.inherits(SortItems, vegaDataflow.Transform);
|
1178 |
|
1179 | prototype$7.transform = function(_, pulse) {
|
1180 | var mod = _.modified('sort')
|
1181 | || pulse.changed(pulse.ADD)
|
1182 | || pulse.modified(_.sort.fields)
|
1183 | || pulse.modified('datum');
|
1184 |
|
1185 | if (mod) pulse.source.sort(vegaDataflow.stableCompare(_.sort));
|
1186 |
|
1187 | this.modified(mod);
|
1188 | return pulse;
|
1189 | };
|
1190 |
|
1191 | var Zero = 'zero',
|
1192 | Center = 'center',
|
1193 | Normalize = 'normalize',
|
1194 | DefOutput = ['y0', 'y1'];
|
1195 |
|
1196 | |
1197 |
|
1198 |
|
1199 |
|
1200 |
|
1201 |
|
1202 |
|
1203 |
|
1204 |
|
1205 | function Stack(params) {
|
1206 | vegaDataflow.Transform.call(this, null, params);
|
1207 | }
|
1208 |
|
1209 | Stack.Definition = {
|
1210 | "type": "Stack",
|
1211 | "metadata": {"modifies": true},
|
1212 | "params": [
|
1213 | { "name": "field", "type": "field" },
|
1214 | { "name": "groupby", "type": "field", "array": true },
|
1215 | { "name": "sort", "type": "compare" },
|
1216 | { "name": "offset", "type": "enum", "default": Zero, "values": [Zero, Center, Normalize] },
|
1217 | { "name": "as", "type": "string", "array": true, "length": 2, "default": DefOutput }
|
1218 | ]
|
1219 | };
|
1220 |
|
1221 | var prototype$8 = vegaUtil.inherits(Stack, vegaDataflow.Transform);
|
1222 |
|
1223 | prototype$8.transform = function(_, pulse) {
|
1224 | var as = _.as || DefOutput,
|
1225 | y0 = as[0],
|
1226 | y1 = as[1],
|
1227 | sort = vegaDataflow.stableCompare(_.sort),
|
1228 | field = _.field || vegaUtil.one,
|
1229 | stack = _.offset === Center ? stackCenter
|
1230 | : _.offset === Normalize ? stackNormalize
|
1231 | : stackZero,
|
1232 | groups, i, n, max;
|
1233 |
|
1234 |
|
1235 | groups = partition(pulse.source, _.groupby, sort, field);
|
1236 |
|
1237 |
|
1238 | for (i=0, n=groups.length, max=groups.max; i<n; ++i) {
|
1239 | stack(groups[i], max, field, y0, y1);
|
1240 | }
|
1241 |
|
1242 | return pulse.reflow(_.modified()).modifies(as);
|
1243 | };
|
1244 |
|
1245 | function stackCenter(group, max, field, y0, y1) {
|
1246 | var last = (max - group.sum) / 2,
|
1247 | m = group.length,
|
1248 | j = 0, t;
|
1249 |
|
1250 | for (; j<m; ++j) {
|
1251 | t = group[j];
|
1252 | t[y0] = last;
|
1253 | t[y1] = (last += Math.abs(field(t)));
|
1254 | }
|
1255 | }
|
1256 |
|
1257 | function stackNormalize(group, max, field, y0, y1) {
|
1258 | var scale = 1 / group.sum,
|
1259 | last = 0,
|
1260 | m = group.length,
|
1261 | j = 0, v = 0, t;
|
1262 |
|
1263 | for (; j<m; ++j) {
|
1264 | t = group[j];
|
1265 | t[y0] = last;
|
1266 | t[y1] = last = scale * (v += Math.abs(field(t)));
|
1267 | }
|
1268 | }
|
1269 |
|
1270 | function stackZero(group, max, field, y0, y1) {
|
1271 | var lastPos = 0,
|
1272 | lastNeg = 0,
|
1273 | m = group.length,
|
1274 | j = 0, v, t;
|
1275 |
|
1276 | for (; j<m; ++j) {
|
1277 | t = group[j];
|
1278 | v = +field(t);
|
1279 | if (v < 0) {
|
1280 | t[y0] = lastNeg;
|
1281 | t[y1] = (lastNeg += v);
|
1282 | } else {
|
1283 | t[y0] = lastPos;
|
1284 | t[y1] = (lastPos += v);
|
1285 | }
|
1286 | }
|
1287 | }
|
1288 |
|
1289 | function partition(data, groupby, sort, field) {
|
1290 | var groups = [],
|
1291 | get = function(f) { return f(t); },
|
1292 | map, i, n, m, t, k, g, s, max;
|
1293 |
|
1294 |
|
1295 | if (groupby == null) {
|
1296 | groups.push(data.slice());
|
1297 | } else {
|
1298 | for (map={}, i=0, n=data.length; i<n; ++i) {
|
1299 | t = data[i];
|
1300 | k = groupby.map(get);
|
1301 | g = map[k];
|
1302 | if (!g) {
|
1303 | map[k] = (g = []);
|
1304 | groups.push(g);
|
1305 | }
|
1306 | g.push(t);
|
1307 | }
|
1308 | }
|
1309 |
|
1310 |
|
1311 | for (k=0, max=0, m=groups.length; k<m; ++k) {
|
1312 | g = groups[k];
|
1313 | for (i=0, s=0, n=g.length; i<n; ++i) {
|
1314 | s += Math.abs(field(g[i]));
|
1315 | }
|
1316 | g.sum = s;
|
1317 | if (s > max) max = s;
|
1318 | if (sort) g.sort(sort);
|
1319 | }
|
1320 | groups.max = max;
|
1321 |
|
1322 | return groups;
|
1323 | }
|
1324 |
|
1325 | exports.axisticks = AxisTicks;
|
1326 | exports.datajoin = DataJoin;
|
1327 | exports.encode = Encode;
|
1328 | exports.legendentries = LegendEntries;
|
1329 | exports.linkpath = LinkPath;
|
1330 | exports.pie = Pie;
|
1331 | exports.scale = Scale;
|
1332 | exports.sortitems = SortItems;
|
1333 | exports.stack = Stack;
|
1334 | exports.validTicks = validTicks;
|
1335 |
|
1336 | Object.defineProperty(exports, '__esModule', { value: true });
|
1337 |
|
1338 | }));
|