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chore: refactor (#3)
* clean up package.jsons * start refactoring draw module * finish refactor of draw function * docs * add simulation config api
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‎LICENSE.md

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Copyright (c) 2023 Jeremiah Tabb
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎README.md

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# mindgraph

‎package.json

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{
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"name": "mindgraph",
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"version": "0.0.0",
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"description": "monorepo for @mindgraph/*",
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"scripts": {
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"ci": "pnpm run format:check && turbo run build lint typecheck",
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"format": "prettier . --write",
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"format:check": "prettier . --check"
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},
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"private": true,
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"type": "module",
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"author": "jollyjerr",
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"private": true,
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"author": "jollyjerr <[email protected]>",
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"license": "MIT",
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"repository": {
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"type": "git",
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"url": "git+https://github.com/jollyjerr/mindgraph.git"
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},
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"bugs": {
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"url": "https://github.com/jollyjerr/mindgraph/issues"
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},
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"homepage": "https://github.com/jollyjerr/mindgraph#readme",
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"devDependencies": {
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"@typescript-eslint/eslint-plugin": "^5.48.2",

‎packages/draw/README.md

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# draw

‎packages/draw/package.json

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{
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"name": "@mindgraph/draw",
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"version": "0.0.1",
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"description": "markdown note graph view builder",
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"description": "web based graph view for markdown notes",
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"scripts": {
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"build": "vite build && tsc --emitDeclarationOnly",
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"lint": "eslint src/**",
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"typecheck": "tsc --noEmit",
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"dev": "node example/server.js"
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},
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"private": true,
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"type": "module",
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"private": true,
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"author": "jollyjerr <[email protected]>",
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"license": "MIT",
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"files": [
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"dist"

‎packages/draw/src/canvas.ts

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import { create, select } from 'd3-selection';
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import { ZoomTransform } from 'd3-zoom';
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import { getStyles } from './style';
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import { loadSvgElements } from './svg';
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import { SimulationNode } from './types';
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export function loadCanvas(
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{ width, height, deviceScale }: ReturnType<typeof getStyles>,
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scaledToDevice: boolean,
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canvasElement?: HTMLCanvasElement,
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) {
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const element = canvasElement ? select(canvasElement) : create('canvas');
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const appliedWidth = scaledToDevice ? width * deviceScale : width;
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const appliedHeight = scaledToDevice ? height * deviceScale : height;
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element.attr('width', appliedWidth);
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element.attr('height', appliedHeight);
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const context = element.node()?.getContext('2d');
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if (scaledToDevice) {
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context?.scale(deviceScale, deviceScale);
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}
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return { element, context };
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}
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export interface DrawFrameArgs {
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canvas: ReturnType<typeof loadCanvas>;
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svgElements: ReturnType<typeof loadSvgElements>;
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style: ReturnType<typeof getStyles>;
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zoomTransform: ZoomTransform;
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uniqueNodeColors?: string[];
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}
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export function drawFrame({
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canvas: { element, context },
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svgElements: { nodeObjects, linkObjects },
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uniqueNodeColors,
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zoomTransform,
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style,
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}: DrawFrameArgs) {
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if (!context) return {};
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context.save();
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context.clearRect(
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0,
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0,
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Number(element.attr('width')),
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Number(element.attr('height')),
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);
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context.translate(zoomTransform.x, zoomTransform.y);
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context.scale(zoomTransform.k, zoomTransform.k);
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linkObjects.each(function (link) {
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if (link.source.x && link.source.y && link.target.x && link.target.y) {
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context.beginPath();
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context.strokeStyle = style.linkColor;
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context.moveTo(link.source.x, link.source.y);
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context.lineTo(link.target.x, link.target.y);
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context.stroke();
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context.closePath();
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}
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});
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const mapColorToNode = !!uniqueNodeColors;
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const nodeColorMap: Record<string, SimulationNode> = {};
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nodeObjects.each(function (n, i) {
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if (n.x && n.y) {
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const radius = Number(select(this).attr('r'));
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const nodeFill = mapColorToNode ? uniqueNodeColors[i] : style.nodeColor;
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context.beginPath();
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context.fillStyle = nodeFill;
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context.arc(n.x, n.y, radius, 0, Math.PI * 2);
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context.fill();
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context.closePath();
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const name = n.name.split('.md')[0];
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context.beginPath();
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context.fillStyle = style.titleColor;
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context.fillText(
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name,
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n.x - context.measureText(name).width / 2,
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n.y + radius + style.nodeTitlePadding,
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);
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context.fill();
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context.closePath();
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if (mapColorToNode) {
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nodeColorMap[nodeFill] = n;
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}
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}
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});
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context.restore();
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return nodeColorMap;
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}

‎packages/draw/src/draw.ts

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import { zoomIdentity, zoom, ZoomTransform } from 'd3-zoom';
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import { drawFrame, loadCanvas } from './canvas';
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import {
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buildSimulation,
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getSimulationConfig,
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loadSimulationNodeDatums,
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} from './simulation';
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import {
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convertRgbArrayToStyle,
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generateUniqueColors,
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getStyles,
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} from './style';
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import { loadSvgElements, nextFrame } from './svg';
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import { MindGraphConfig, NodeClickEvent } from './types';
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export function draw({
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data,
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canvasElement,
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onNodeClick,
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style,
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simulationConfig,
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}: MindGraphConfig) {
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let zoomTransform = zoomIdentity;
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const styleConfig = getStyles(style);
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const simulationSettings = getSimulationConfig(simulationConfig);
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const simulationDatums = loadSimulationNodeDatums(data);
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const simulation = buildSimulation({
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...simulationDatums,
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...simulationSettings,
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width: styleConfig.width,
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height: styleConfig.height,
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});
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const svgElements = loadSvgElements(simulationDatums, styleConfig);
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const visualCanvas = loadCanvas(styleConfig, true, canvasElement);
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const tick = () => {
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nextFrame(svgElements);
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drawFrame({
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canvas: visualCanvas,
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style: styleConfig,
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svgElements,
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zoomTransform,
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});
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};
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visualCanvas.element.call(
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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zoom<HTMLCanvasElement, any>()
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.extent([
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[0, 0],
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[styleConfig.width, styleConfig.height],
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])
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.scaleExtent([simulationSettings.minZoom, simulationSettings.maxZoom])
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.on('zoom', (e: { transform: ZoomTransform }) => {
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zoomTransform = e.transform;
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tick();
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}),
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);
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simulation.on('tick', tick);
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const clickMapCanvas = loadCanvas(styleConfig, false);
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const clickMapColors = generateUniqueColors(data.nodes.length);
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visualCanvas.element.on('click', ({ layerX, layerY }: NodeClickEvent) => {
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if (!clickMapCanvas.context || typeof onNodeClick !== 'function') return;
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const uniqueColorToNode = drawFrame({
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canvas: clickMapCanvas,
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style: styleConfig,
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uniqueNodeColors: clickMapColors,
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svgElements,
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zoomTransform,
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});
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const clickedNode =
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uniqueColorToNode[
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convertRgbArrayToStyle(
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Array.from(
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clickMapCanvas.context.getImageData(layerX, layerY, 1, 1).data,
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),
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)
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];
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if (clickedNode) {
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onNodeClick(clickedNode);
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}
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});
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}

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