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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) {
const { style, physics, gData } = props
const styles = flatten([CONTAINER, style])
const fgRef= useRef();
const GROUPS: number =12;
//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 = [];
});
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())
}, []);
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"}
linkWidth={2}
linkDirectionalParticles={2}
nodeColor={node => !node.childLinks.length ? 'green' : node.collapsed ? 'red' : 'yellow'}
onNodeClick={handleNodeClick}
//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={handleNodeClick}
//d3VelocityDecay={visco}
/>
}
</View>
)
})
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