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import * as React from "react"
import { useState, useEffect, useRef, useMemo, useCallback } from "react"
import { StyleProp, TextStyle, View, ViewStyle } from "react-native"
import { observer } from "mobx-react-lite"
import { color, typography } from "../../theme"
import { Text } from "../"
import { flatten } from "ramda"
//import data from "../../data/miserables.json"
//import genRandomTree from "../../data/randomdata";
//import rando from "../../data/rando.json"
import rando from "../../data/randorev.json"
import { ForceGraph2D, ForceGraph3D, ForceGraphVR, ForceGraphAR } from "react-force-graph"
import * as d3 from "d3-force"
const CONTAINER: ViewStyle = {
justifyContent: "center",
}
const TEXT: TextStyle = {
fontFamily: typography.primary,
fontSize: 14,
color: color.primary,
}
export interface GraphProps {
/**
* An optional style override useful for padding & margin.
*/
style?: StyleProp<ViewStyle>
physics
gData
}
/**
* Describe your component here
*/
export const Graph = observer(function Graph(props: GraphProps): JSX.Element {
const { style, physics, gData } = props
const styles = flatten([CONTAINER, style])
const fgRef = useRef()
const GROUPS: number = 12
const NODE_R: number = 8
//const gData = genRandomTree(200);
//const [charge, setCharge] = useState(-30);
//const [link, setLink] = useState(-30);
useEffect(() => {
const fg = fgRef.current
//fg.d3Force('center').strength(0.05);
fg.d3Force("link").strength(physics.linkStrength)
fg.d3Force("link").iterations(physics.linkIts)
physics.collision
? fg.d3Force("collide", d3.forceCollide().radius(20))
: fg.d3Force("collide", null)
fg.d3Force("charge").strength(physics.charge)
})
const rootId = 0
const nodesById = useMemo(() => {
const nodesById = Object.fromEntries(rando.nodes.map((node) => [node.id, node]))
// link parent/children
rando.nodes.forEach((node) => {
node.collapsed = node.id !== rootId
node.childLinks = []
node.parentLink = []
})
rando.links.forEach((link) => nodesById[link.source].childLinks.push(link))
return nodesById
}, [rando])
const getPrunedTree = useCallback(() => {
const visibleNodes = []
const visibleLinks = []
; (function traverseTree(node = nodesById[rootId]) {
visibleNodes.push(node)
if (node.collapsed) return
visibleLinks.push(...node.childLinks)
node.childLinks
.map((link) => (typeof link.target === "object" ? link.target : nodesById[link.target])) // get child node
.forEach(traverseTree)
})()
return { nodes: visibleNodes, links: visibleLinks }
}, [nodesById])
const [prunedTree, setPrunedTree] = useState(getPrunedTree())
const handleNodeClick = useCallback((node) => {
node.collapsed = !node.collapsed // toggle collapse state
setPrunedTree(getPrunedTree())
}, []);
// Highlight Graph
/**
/* const data = useMemo(() => {
* // cross-link node objects
* rando.links.forEach(link => {
* const a = rando.nodes[link.source];
* const b = rando.nodes[link.target];
* !a.neighbors && (a.neighbors = []);
* !b.neighbors && (b.neighbors = []);
* a.neighbors.push(b);
* b.neighbors.push(a);
*
* !a.links && (a.links = []);
* !b.links && (b.links = []);
* a.links.push(link);
* b.links.push(link);
* });
*
* return rando;
* }, []);
* const [highlightNodes, setHighlightNodes] = useState(new Set());
* const [highlightLinks, setHighlightLinks] = useState(new Set());
* const [hoverNode, setHoverNode] = useState(null);
*
* const updateHighlight = () => {
* setHighlightNodes(highlightNodes);
* setHighlightLinks(highlightLinks);
* };
*
* const handleNodeHover = node => {
* highlightNodes.clear();
* highlightLinks.clear();
* if (node) {
* highlightNodes.add(node);
* node.neighbors.forEach(neighbor => highlightNodes.add(neighbor));
* node.links.forEach(link => highlightLinks.add(link));
* }
*
* setHoverNode(node || null);
* updateHighlight();
* };
*
* const handleLinkHover = link => {
* highlightNodes.clear();
* highlightLinks.clear();
*
* if (link) {
* highlightLinks.add(link);
* highlightNodes.add(link.source);
* highlightNodes.add(link.target);
* }
*
* updateHighlight();
* };
*
* const paintRing = useCallback((node, ctx) => {
* // add ring just for highlighted nodes
* ctx.beginPath();
* ctx.arc(node.x, node.y, NODE_R * 1.4, 0, 2 * Math.PI, false);
* ctx.fillStyle = node === hoverNode ? 'red' : 'orange';
* ctx.fill();
* }, [hoverNode]);
*/
/* autoPauseRedraw={false}
linkWidth={link => highlightLinks.has(link) ? 5 : 1}
linkDirectionalParticles={4}
linkDirectionalParticleWidth={link => highlightLinks.has(link) ? 4 : 0}
nodeCanvasObjectMode={node => highlightNodes.has(node) ? 'before' : undefined}
nodeCanvasObject={paintRing}
onNodeHover={handleNodeHover}
onLinkHover={handleLinkHover}
nodeRelSize={NODE_R} */
return (
<View>
{!physics.threedim ? (
<ForceGraph2D
ref={fgRef}
graphData={physics.collapse ? prunedTree : rando}
// nodeAutoColorBy={d => d.id%GROUPS}
linkAutoColorBy={(d) => rando.nodes[d.source].id % GROUPS}
linkColor={"#ffffff"}
linkDirectionalParticles={2}
nodeColor={(node) =>
!node.childLinks.length ? "green" : node.collapsed ? "red" : "yellow"
}
onNodeClick={!physics.collapse ? null : handleNodeClick}
nodeLabel={(node) => "label"}
// nodeVal ={(node)=> node.childLinks.length * 0.5 + 1}
//d3VelocityDecay={visco}
/>
) : (
<ForceGraph3D
ref={fgRef}
graphData={physics.collapse ? prunedTree : rando}
// nodeAutoColorBy={d => d.id%GROUPS}
linkAutoColorBy={(d) => rando.nodes[d.source].id % GROUPS}
linkColor={"#ffffff"}
linkWidth={2}
linkDirectionalParticles={2}
nodeColor={(node) =>
!node.childLinks.length ? "green" : node.collapsed ? "red" : "yellow"
}
onNodeClick={!physics.collapse ? null : handleNodeClick}
nodeVal={(node) => node.childLinks.length + 1}
linkOpacity={0.8}
//d3VelocityDecay={visco}
/>
)}
</View>
)
})
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