48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
import Component from '@glimmer/component';
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import { tracked } from '@glimmer/tracking';
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const size = 336;
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const insetSize = size / 2 - 8;
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const inset = function(num) {
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return insetSize * num;
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};
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const milliseconds = function(num, max) {
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return max > 0 ? parseInt(max * num) / 100 : 0;
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};
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export default class TomographyGraph extends Component {
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@tracked max = -999999999;
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size = size;
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circle = [inset(1), inset(0.25), inset(0.5), inset(0.75), inset(1)];
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labels = [inset(-0.25), inset(-0.5), inset(-0.75), inset(-1)];
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get milliseconds() {
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const distances = this.args.distances || [];
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const max = distances.reduce((prev, d) => Math.max(prev, d.distance), this.max);
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return [25, 50, 75, 100].map(item => milliseconds(item, max));
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}
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get distances() {
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const distances = this.args.distances || [];
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const max = distances.reduce((prev, d) => Math.max(prev, d.distance), this.max);
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const len = distances.length;
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if (len > 360) {
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// We have more nodes than we want to show, take a random sampling to keep
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// the number around 360.
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const sampling = 360 / len;
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distances = distances.filter(function(_, i) {
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return i == 0 || i == len - 1 || Math.random() < sampling;
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});
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}
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return distances.map((d, i) => {
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return {
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rotate: (i * 360) / distances.length,
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y2: -insetSize * (d.distance / max),
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node: d.node,
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distance: d.distance,
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segment: d.segment,
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};
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});
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}
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}
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