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|
import React, { ComponentPropsWithoutRef, useEffect, useRef, useState, useMemo } from 'react'
import { usePersistantState } from '../util/persistant-state'
const d3promise = import('d3-force-3d')
import type {
ForceGraph2D as TForceGraph2D,
ForceGraph3D as TForceGraph3D,
} from 'react-force-graph'
import { OrgRoamGraphReponse, OrgRoamLink, OrgRoamNode } from '../api'
import { GraphData, NodeObject } from 'force-graph'
import { useWindowSize } from '@react-hook/window-size'
import { Scrollbars } from 'react-custom-scrollbars-2'
import { Easing } from '@tweenjs/tween.js'
import { useAnimation } from '@lilib/hooks'
import {
Accordion,
AccordionButton,
AccordionItem,
AccordionIcon,
AccordionPanel,
Text,
Heading,
VStack,
StackDivider,
Button,
CloseButton,
Slider,
SliderThumb,
SliderTrack,
SliderFilledTrack,
Switch,
FormControl,
FormLabel,
Box,
Container,
Icon,
IconButton,
Tooltip,
Menu,
MenuList,
MenuButton,
MenuItem,
MenuGroup,
MenuDivider,
MenuOptionGroup,
MenuItemOption,
Flex,
useTheme,
Select,
} from '@chakra-ui/react'
import { InfoOutlineIcon, RepeatClockIcon, ChevronDownIcon, SettingsIcon } from '@chakra-ui/icons'
// react-force-graph fails on import when server-rendered
// https://github.com/vasturiano/react-force-graph/issues/155
const ForceGraph2D = (
!!global.window ? require('react-force-graph').ForceGraph2D : null
) as typeof TForceGraph2D
const ForceGraph3D = (
!!global.window ? require('react-force-graph').ForceGraph3D : null
) as typeof TForceGraph3D
export type NodeById = { [nodeId: string]: OrgRoamNode | undefined }
export type LinksByNodeId = { [nodeId: string]: OrgRoamLink[] | undefined }
export type Scope = {
nodeIds: string[]
}
const options: string[] = []
const algorithms: { [name: string]: (percent: number) => number } = {}
for (let type in Easing) {
for (let mode in (Easing as any)[type]) {
let name = type + mode
if (name === 'LinearNone') {
name = 'Linear'
}
options.push(name)
algorithms[name] = (Easing as any)[type][mode]
}
}
const initialPhysics = {
enabled: true,
charge: -350,
collision: true,
collisionStrength: 0,
linkStrength: 0.1,
linkIts: 1,
particles: false,
particlesNumber: 0,
particlesWidth: 4,
linkOpacity: 0.4,
linkWidth: 1,
nodeRel: 4,
labels: true,
labelScale: 1.5,
alphaDecay: 0.02,
alphaTarget: 0,
alphaMin: 0,
velocityDecay: 0.25,
gravity: 0.5,
gravityOn: true,
colorful: true,
galaxy: true,
ticks: 1,
hover: 'highlight',
click: 'select',
doubleClick: 'local',
iterations: 0,
highlight: true,
highlightNodeSize: 2,
highlightLinkSize: 2,
highlightAnim: false,
animationSpeed: 250,
algorithms: algorithms,
algorithmOptions: options,
algorithmName: 'CubicOut',
orphans: false,
}
export default function Home() {
// only render on the client
const [showPage, setShowPage] = useState(false)
useEffect(() => {
setShowPage(true)
}, [])
if (!showPage) {
return null
}
return <GraphPage />
}
export function GraphPage() {
const [physics, setPhysics] = usePersistantState('physics', initialPhysics)
// const [theme, setTheme] = useState(initialTheme)
const [graphData, setGraphData] = useState<GraphData | null>(null)
const [emacsNodeId, setEmacsNodeId] = useState<string | null>(null)
const nodeByIdRef = useRef<NodeById>({})
const linksByNodeIdRef = useRef<LinksByNodeId>({})
const updateGraphData = () => {
return fetch('http://localhost:35901/graph')
.then((res) => res.json())
.then((orgRoamGraphData: OrgRoamGraphReponse) => {
nodeByIdRef.current = Object.fromEntries(
orgRoamGraphData.nodes.map((node) => [node.id, node]),
)
linksByNodeIdRef.current = orgRoamGraphData.links.reduce<LinksByNodeId>((acc, link) => {
return {
...acc,
[link.source]: [...(acc[link.source] ?? []), link],
[link.target]: [...(acc[link.target] ?? []), link],
}
}, {})
// react-force-graph modifies the graph data implicitly,
// so we make sure there's no overlap between the objects we pass it and
// nodeByIdRef, linksByNodeIdRef
const orgRoamGraphDataClone = JSON.parse(JSON.stringify(orgRoamGraphData))
setGraphData(orgRoamGraphDataClone)
})
}
useEffect(() => {
const trackEmacs = new EventSource('http://127.0.0.1:35901/current-node-id')
trackEmacs.addEventListener('message', (e) => {
const emacsNodeId = e.data
setEmacsNodeId(emacsNodeId)
})
updateGraphData()
}, [])
useEffect(() => {
if (!emacsNodeId) {
return
}
updateGraphData()
}, [emacsNodeId])
const [threeDim, setThreeDim] = useState(false)
const [showTweaks, setShowTweaks] = useState(true)
if (!graphData) {
return null
}
return (
<div>
{showTweaks ? (
<Tweaks
{...{
physics,
setPhysics,
threeDim,
}}
onClose={() => {
setShowTweaks(false)
}}
/>
) : (
<Box position="absolute" zIndex="overlay" marginTop="2%" marginLeft="2%">
<IconButton
aria-label="Settings"
icon={<SettingsIcon />}
onClick={() => setShowTweaks(true)}
/>
</Box>
)}
<Graph
nodeById={nodeByIdRef.current!}
linksByNodeId={linksByNodeIdRef.current!}
{...{
physics,
graphData,
threeDim,
emacsNodeId,
}}
/>
</div>
)
}
export interface InfoTooltipProps {
infoText?: string | boolean
}
export const InfoTooltip = (props: InfoTooltipProps) => {
const { infoText } = props
return (
<Box paddingLeft="1">
<Tooltip label={infoText} placement="top" color="gray.100" bg="gray.800" hasArrow>
<InfoOutlineIcon />
</Tooltip>
</Box>
)
}
export interface SliderWithInfoProps {
min?: number
max?: number
step?: number
value: number
onChange: (arg0: number) => void
label: string
infoText?: string
}
export const SliderWithInfo = ({
min = 0,
max = 10,
step = 0.1,
value = 1,
...rest
}: SliderWithInfoProps) => {
const { onChange, label, infoText } = rest
return (
<Box>
<Box display="flex" alignItems="flex-end">
<Text>{label}</Text>
{infoText && <InfoTooltip infoText={infoText} />}
</Box>
<Slider
value={value}
onChange={onChange}
min={min}
max={max}
step={step}
colorScheme="purple"
>
<SliderTrack>
<SliderFilledTrack />
</SliderTrack>
<Tooltip label={value.toFixed(1)}>
<SliderThumb />
</Tooltip>
</Slider>
</Box>
)
}
export interface EnableSectionProps {
label: string
value: boolean | number
onChange: () => void
infoText?: string
children: React.ReactNode
}
export const EnableSection = (props: EnableSectionProps) => {
const { value, onChange, label, infoText, children } = props
return (
<Box>
<Box display="flex" justifyContent="space-between">
<Box display="flex" alignItems="center">
<Text>{label}</Text>
{infoText && <InfoTooltip infoText={infoText} />}
</Box>
<Switch isChecked={!!value} onChange={onChange} colorScheme="purple" />
</Box>
{value && children}
</Box>
)
}
export interface DropDownMenuProps {
textArray: string[]
onClickArray: any
displayValue: string
}
export const DropDownMenu = (props: DropDownMenuProps) => {
const { textArray, onClickArray, displayValue } = props
return (
<Menu>
<MenuButton as={Button} rightIcon={<ChevronDownIcon />}>
{displayValue}
</MenuButton>
<MenuList>
{textArray.map((option, i) => {
;<MenuItem onClick={onClickArray[i]}> {option} </MenuItem>
})}
</MenuList>
</Menu>
)
}
/* style={{
* position: "absolute",
* zIndex: 2000,
* width: 400,
* maxHeight: "70%",
* background: "alt.100",
* marginTop: "2%",
* marginLeft: "2%"
* }} */
export interface TweakProps {
physics: typeof initialPhysics
setPhysics: any
threeDim: boolean
onClose: () => void
}
export const Tweaks = (props: TweakProps) => {
const { physics, setPhysics, threeDim, onClose } = props
return (
<Box
zIndex="overlay"
position="absolute"
bg="alt.100"
w="xs"
marginTop="2%"
marginLeft="2%"
borderRadius="md"
maxH={650}
paddingBottom={5}
//overflowY="scroll"
>
<Box display="flex" justifyContent="flex-end">
<Tooltip label="Reset settings to defaults">
<IconButton
aria-label="Reset Defaults"
icon={<RepeatClockIcon />}
onClick={() => setPhysics(initialPhysics)}
colorScheme="purple"
/>
</Tooltip>
<CloseButton onClick={onClose} />
</Box>
<Scrollbars
autoHeight
autoHeightMax={600}
autoHide
renderThumbVertical={({ style, ...props }) => (
<Box
{...props}
style={{
...style,
borderRadius: 10,
}}
bg="purple.500"
/>
)}
>
<Accordion allowMultiple allowToggle>
<AccordionItem>
<AccordionButton display="flex" justifyContent="space-between">
<Box display="flex">
<AccordionIcon />
<Text>Physics</Text>
</Box>
<Switch
id="physicsOn"
onChange={() => setPhysics({ ...physics, enabled: !physics.enabled })}
isChecked={physics.enabled}
colorScheme="purple"
/>
</AccordionButton>
<AccordionPanel>
<VStack
spacing={2}
justifyContent="flex-start"
divider={<StackDivider borderColor="gray.200" />}
align="stretch"
>
<EnableSection
label="Gravity"
value={physics.gravityOn}
onChange={() => setPhysics({ ...physics, gravityOn: !physics.gravityOn })}
>
<SliderWithInfo
label="Strength"
value={physics.gravity * 10}
onChange={(v) => setPhysics({ ...physics, gravity: v / 10 })}
/>
</EnableSection>
<SliderWithInfo
value={-physics.charge / 100}
onChange={(value) => setPhysics({ ...physics, charge: -100 * value })}
label="Repulsive Force"
/>
<EnableSection
label="Collision"
infoText="Perfomance sap, disable if slow"
value={physics.collision}
onChange={() => setPhysics({ ...physics, collision: !physics.collision })}
>
<SliderWithInfo
value={physics.collisionStrength * 10}
onChange={(value) => setPhysics({ ...physics, collisionStrength: value / 10 })}
label="Strength"
/>
</EnableSection>
<SliderWithInfo
value={physics.linkStrength * 5}
onChange={(value) => setPhysics({ ...physics, linkStrength: value / 5 })}
label="Link Force"
/>
<SliderWithInfo
label="Link Iterations"
value={physics.linkIts}
onChange={(value) => setPhysics({ ...physics, linkIts: value })}
min={0}
max={6}
step={1}
infoText="How many links down the line the physics of a single node affects (Slow)"
/>
<SliderWithInfo
label="Viscosity"
value={physics.velocityDecay * 10}
onChange={(value) => setPhysics({ ...physics, velocityDecay: value / 10 })}
/>
</VStack>
<Box>
<Accordion allowToggle>
<AccordionItem>
<AccordionButton>
<Text>Advanced</Text>
<AccordionIcon />
</AccordionButton>
<AccordionPanel>
<VStack
spacing={2}
justifyContent="flex-start"
divider={<StackDivider borderColor="gray.200" />}
align="stretch"
>
<SliderWithInfo
label="Iterations per tick"
min={1}
max={10}
step={1}
value={physics.iterations}
onChange={(v) => setPhysics({ ...physics, iterations: v })}
infoText="Number of times the physics simulation iterates per simulation step"
/>
<SliderWithInfo
label="Stabilization rate"
value={physics.alphaDecay * 50}
onChange={(value) => setPhysics({ ...physics, alphaDecay: value / 50 })}
/>
</VStack>
</AccordionPanel>
</AccordionItem>
</Accordion>
</Box>
{/* </VStack> */}
</AccordionPanel>
</AccordionItem>
<AccordionItem>
<AccordionButton>
<AccordionIcon />
Visual
</AccordionButton>
<AccordionPanel>
<VStack
spacing={2}
justifyContent="flex-start"
divider={<StackDivider borderColor="gray.200" />}
align="stretch"
>
{/* <Box>
<Text>Kill orphans</Text>
<Switch
colorScheme="purple"
onChange={() => {
setPhysics({ ...physics, orphans: !physics.orphans })
}}
isChecked={physics.orphans}
></Switch>
</Box> */}
<SliderWithInfo
label="Node size"
value={physics.nodeRel}
onChange={(value) => setPhysics({ ...physics, nodeRel: value })}
/>
<SliderWithInfo
label="Link width"
value={physics.linkWidth}
onChange={(value) => setPhysics({ ...physics, linkWidth: value })}
/>
<EnableSection
label="Labels"
value={physics.labels}
onChange={() => setPhysics({ ...physics, labels: !physics.labels })}
>
<SliderWithInfo
label="Label Appearance Scale"
value={physics.labelScale * 5}
onChange={(value) => setPhysics({ ...physics, labelScale: value / 5 })}
/>
</EnableSection>
<EnableSection
label="Directional Particles"
value={physics.particles}
onChange={() => setPhysics({ ...physics, particles: !physics.particles })}
>
<SliderWithInfo
label="Particle Number"
value={physics.particlesNumber}
max={5}
step={1}
onChange={(value) => setPhysics({ ...physics, particlesNumber: value })}
/>
<SliderWithInfo
label="Particle Size"
value={physics.particlesWidth}
onChange={(value) => setPhysics({ ...physics, particlesWidth: value })}
/>
</EnableSection>
<EnableSection
label="Highlight Animation"
onChange={() => {
setPhysics({ ...physics, highlightAnim: !physics.highlightAnim })
}}
value={physics.highlightAnim}
>
<SliderWithInfo
label="Animation speed"
onChange={(v) => setPhysics({ ...physics, animationSpeed: v })}
value={physics.animationSpeed}
infoText="Slower speed has a chance of being buggy"
min={50}
max={1000}
step={10}
/>
<Select
placeholder={physics.algorithmName}
onChange={(v) => setPhysics({ ...physics, algorithmName: v.target.value })}
>
{physics.algorithmOptions.map((opt, i) => (
<option key={i} value={physics.algorithmOptions[i]}>
{' '}
{physics.algorithmOptions[i]}
</option>
))}
</Select>
{/* <DropDownMenu
displayValue={physics.algorithmName}
textArray={physics.algorithmOptions}
onClickArray={physics.algorithmOptions.map((option) =>
setPhysics({ ...physics, algorithmName: { option } }),
)}
/> */}
</EnableSection>
<EnableSection
label="Highlight"
onChange={() => setPhysics({ ...physics, highlight: !physics.highlight })}
value={physics.highlight}
>
<SliderWithInfo
label="Highlight Link Thickness Multiplier"
value={physics.highlightLinkSize}
onChange={(value) => setPhysics({ ...physics, highlightLinkSize: value })}
/>
<SliderWithInfo
label="Highlight Node Size Multiplier"
value={physics.highlightNodeSize}
onChange={(value) => setPhysics({ ...physics, highlightNodeSize: value })}
/>
<Flex justifyContent="space-between">
<Text> Highlight node color </Text>
</Flex>
<Flex justifyContent="space-between">
<Text> Highlight link color </Text>
</Flex>
</EnableSection>
</VStack>
</AccordionPanel>
</AccordionItem>
<AccordionItem>
<AccordionButton>
<AccordionIcon />
Behavior
</AccordionButton>
<AccordionPanel>
<VStack
spacing={2}
justifyContent="flex-start"
divider={<StackDivider borderColor="gray.200" />}
align="stretch"
>
<Box display="flex" justifyContent="space-between" alignItems="center">
<Text>Hover Higlight</Text>
<Menu>
<MenuButton as={Button} rightIcon={<ChevronDownIcon />}>
{physics.hover}
</MenuButton>
<MenuList>
<MenuItem>Off</MenuItem>
<MenuItem>On</MenuItem>
</MenuList>
</Menu>
</Box>
<Box display="flex" justifyContent="space-between">
<Text>Click</Text>
</Box>
<Box display="flex" justifyContent="space-between">
<Text>Double-click</Text>
</Box>
</VStack>
</AccordionPanel>
</AccordionItem>
</Accordion>
</Scrollbars>
</Box>
)
}
export interface GraphProps {
nodeById: NodeById
linksByNodeId: LinksByNodeId
graphData: GraphData
physics: typeof initialPhysics
threeDim: boolean
emacsNodeId: string | null
}
export const Graph = function (props: GraphProps) {
const { physics, graphData, threeDim, linksByNodeId, emacsNodeId, nodeById } = props
const graph2dRef = useRef<any>(null)
const graph3dRef = useRef<any>(null)
// react-force-graph does not track window size
// https://github.com/vasturiano/react-force-graph/issues/233
// does not work below a certain width
const [windowWidth, windowHeight] = useWindowSize()
const [hoverNode, setHoverNode] = useState<NodeObject | null>(null)
const [scope, setScope] = useState<Scope>({ nodeIds: [] })
useEffect(() => {
if (!emacsNodeId) {
return
}
setScope({
nodeIds: [emacsNodeId],
})
}, [emacsNodeId])
const centralHighlightedNode = hoverNode
const highlightedNodes = (() => {
if (!centralHighlightedNode) {
return {}
}
const links = linksByNodeId[centralHighlightedNode.id!]
if (!links) {
return {}
}
return Object.fromEntries(
[
centralHighlightedNode.id! as string,
...links.flatMap((link) => [link.source, link.target]),
].map((nodeId) => [nodeId, {}]),
)
})()
const scopedNodes = graphData.nodes.filter((node) => {
const links = linksByNodeId[node.id as string] ?? []
/* if (physics.orphans && links.length === 0) {
* return false
* } */
return (
scope.nodeIds.includes(node.id as string) ||
links.some((link) => {
return scope.nodeIds.includes(link.source) || scope.nodeIds.includes(link.target)
})
)
})
const scopedNodeIds = scopedNodes.map((node) => node.id as string)
const scopedLinks = graphData.links.filter((link) => {
// we need to cover both because force-graph modifies the original data
// but if we supply the original data on each render, the graph will re-render sporadically
const sourceId = typeof link.source === 'object' ? link.source.id! : (link.source as string)
const targetId = typeof link.target === 'object' ? link.target.id! : (link.target as string)
return scopedNodeIds.includes(sourceId as string) && scopedNodeIds.includes(targetId as string)
})
const scopedGraphData = useMemo(
() =>
scope.nodeIds.length === 0
? graphData
: {
nodes: scopedNodes,
links: scopedLinks,
},
[scope, JSON.stringify(Object.keys(nodeById))],
)
// make sure the camera position and zoom or fine when the list of nodes to render is changed
useEffect(() => {
// this setTimeout was added holistically because the behavior is better when we put
// zoomToFit off a little bit
setTimeout(() => {
const fg = threeDim ? graph3dRef.current : graph2dRef.current
fg?.zoomToFit(0, 200)
}, 1)
}, [JSON.stringify(scopedNodeIds)])
useEffect(() => {
;(async () => {
const fg = threeDim ? graph3dRef.current : graph2dRef.current
const d3 = await d3promise
if (physics.gravityOn) {
fg.d3Force('x', d3.forceX().strength(physics.gravity))
fg.d3Force('y', d3.forceY().strength(physics.gravity))
if (threeDim) {
if (physics.galaxy) {
fg.d3Force('x', d3.forceX().strength(physics.gravity / 5))
fg.d3Force('z', d3.forceZ().strength(physics.gravity / 5))
} else {
fg.d3Force('x', d3.forceX().strength(physics.gravity))
fg.d3Force('z', d3.forceZ().strength(physics.gravity))
}
} else {
fg.d3Force('z', null)
}
} else {
fg.d3Force('x', null)
fg.d3Force('y', null)
threeDim ? fg.d3Force('z', null) : null
}
physics.linkStrength && fg.d3Force('link').strength(physics.linkStrength)
physics.linkIts && fg.d3Force('link').iterations(physics.linkIts)
physics.charge && fg.d3Force('charge').strength(physics.charge)
fg.d3Force('collide', physics.collision ? d3.forceCollide().radius(20) : null)
})()
})
// Normally the graph doesn't update when you just change the physics parameters
// This forces the graph to make a small update when you do
useEffect(() => {
graph2dRef.current?.d3ReheatSimulation()
}, [physics])
//shitty handler to check for doubleClicks
const lastNodeClickRef = useRef(0)
const onNodeClick = (node: NodeObject, event: any) => {
const isDoubleClick = event.timeStamp - lastNodeClickRef.current < 400
lastNodeClickRef.current = event.timeStamp
if (isDoubleClick) {
window.open('org-protocol://roam-node?node=' + node.id, '_self')
return
}
setScope((currentScope) => ({
...currentScope,
nodeIds: [...currentScope.nodeIds, node.id as string],
}))
return
}
// easing algorithms
const [opacity, setOpacity] = useState<number>(1)
const [fadeIn, cancel] = useAnimation((x) => setOpacity(x), {
duration: physics.animationSpeed,
algorithm: physics.algorithms[physics.algorithmName] ?? Easing.Cubic.InOut,
})
const [fadeOut, fadeOutCancel] = useAnimation(
(x) => setOpacity(Math.min(opacity, -1 * (x - 1))),
{
duration: physics.animationSpeed,
algorithm: physics.algorithms[physics.algorithmName] ?? Easing.Cubic.InOut,
},
)
const lastHoverNode = useRef()
useEffect(() => {
console.log(physics.algorithms[physics.algorithmName])
hoverNode && (lastHoverNode.current = hoverNode)
if (!physics.highlightAnim) {
return
}
if (hoverNode) {
fadeIn()
} else {
// if (opacity > 0.7) {
cancel()
opacity > 0.5 ? fadeOut() : setOpacity(0)
// } else {
// cancel()
// setOpacity(0)
// }
}
}, [hoverNode])
const theme = useTheme()
//this was just easier than getting an actual package
/* const convertHexToRGBA = (hexCode: string, opacity: number) => {
* let hex = hexCode.replace('#', '')
* if (hex.length === 3) {
* hex = `${hex[0]}${hex[0]}${hex[1]}${hex[1]}${hex[2]}${hex[2]}`
* }
* const r = parseInt(hex.substring(0, 2), 16)
* const g = parseInt(hex.substring(2, 4), 16)
* const b = parseInt(hex.substring(4, 6), 16)
* return `rgba(${r},${g},${b},${opacity})`
* } */
const graphCommonProps: ComponentPropsWithoutRef<typeof TForceGraph2D> = {
graphData: scopedGraphData,
width: windowWidth,
height: windowHeight,
backgroundColor: theme.white,
nodeLabel: (node) => (node as OrgRoamNode).title,
nodeColor: (node) => {
if (!physics.colorful) {
if (Object.keys(highlightedNodes).length === 0) {
return 'rgb(100, 100, 100)'
}
return highlightedNodes[node.id!] ? theme.blue['500'] : 'rgb(50, 50, 50)'
}
const palette = ['pink', 'purple', 'blue', 'cyan', 'teal', 'green', 'yellow', 'orange', 'red']
return theme.colors[
palette[numbereWithinRange(linksByNodeId[node.id!]?.length ?? 0, 0, palette.length - 1)]
][500]
},
nodeRelSize: physics.nodeRel,
nodeVal: (node) => {
const links = linksByNodeId[node.id!] ?? []
const basicSize = 3 + links.length
if (physics.highlightAnim) {
const wasNeighbor = (link) =>
link.source === lastHoverNode.current?.id! || link.target === lastHoverNode.current?.id!
const wasHighlightedNode = links.some(wasNeighbor)
const highlightSize = highlightedNodes[node.id!]
? 1 + opacity * (physics.highlightNodeSize - 1)
: lastHoverNode.current?.id! === node.id!
? 1 + opacity * (physics.highlightNodeSize - 1)
: wasHighlightedNode
? 1 + opacity * (physics.highlightNodeSize - 1)
: 1
return basicSize * highlightSize
} else {
const highlightSize = highlightedNodes[node.id!] ? physics.highlightNodeSize : 1
return basicSize * highlightSize
}
},
nodeCanvasObject: (node, ctx, globalScale) => {
if (!physics.labels) {
return
}
if (globalScale <= physics.labelScale && !highlightedNodes[node.id!]) {
return
}
const links = linksByNodeId[node.id!] ?? []
const wasHighlightedNode = links.some(
(link) =>
link.source === lastHoverNode.current?.id! || link.target === lastHoverNode.current?.id!,
)
const nodeTitle = (node as OrgRoamNode).title!
const label = nodeTitle.substring(0, Math.min(nodeTitle.length, 30))
// const label = 'label'
const fontSize = 12 / globalScale
const textWidth = ctx.measureText(label).width
const bckgDimensions = [textWidth * 1.1, fontSize].map((n) => n + fontSize * 0.5) as [
number,
number,
] // some padding
const fadeFactor = Math.min((3 * (globalScale - physics.labelScale)) / physics.labelScale, 1)
// draw label background
const getLabelOpacity = () => {
if (physics.highlightAnim) {
return Object.keys(highlightedNodes).length === 0
? lastHoverNode.current?.id! === node.id
? 1
: 1 * fadeFactor * (-1 * (0.5 * opacity - 1))
: highlightedNodes[node.id!] || wasHighlightedNode
? 1
: 1 * fadeFactor * (-1 * (0.5 * opacity - 1))
} else {
return Object.keys(highlightedNodes).length === 0
? 1 * fadeFactor
: highlightedNodes[node.id!]
? 1
: 1 * fadeFactor
}
}
const backgroundOpacity = 0.5 * getLabelOpacity()
ctx.fillStyle = `rgba(20, 20, 20, ${backgroundOpacity})`
ctx.fillRect(
node.x! - bckgDimensions[0] / 2,
node.y! - bckgDimensions[1] / 2,
...bckgDimensions,
)
// draw label text
const textOpacity = 2 * backgroundOpacity
ctx.textAlign = 'center'
ctx.textBaseline = 'middle'
ctx.fillStyle = `rgb(255, 255, 255, ${textOpacity})`
ctx.font = `${fontSize}px Sans-Serif`
ctx.fillText(label, node.x!, node.y!)
},
nodeCanvasObjectMode: () => 'after',
linkDirectionalParticles: physics.particles ? physics.particlesNumber : undefined,
linkColor: (link) => {
const linkIsHighlighted =
(link.source as NodeObject).id! === centralHighlightedNode?.id! ||
(link.target as NodeObject).id! === centralHighlightedNode?.id!
if (physics.highlightAnim) {
const linkWasHighlighted =
(link.source as NodeObject).id! === lastHoverNode.current?.id! ||
(link.target as NodeObject).id! === lastHoverNode.current?.id!
return linkIsHighlighted
? theme.colors.purple['inter'](opacity) /*the.colors.purple[500]*/
: linkWasHighlighted
? theme.colors.purple['inter'](opacity) /*the.colors.purple[500]*/
: theme.colors.gray[500]
} else {
return linkIsHighlighted ? theme.colors.purple[500] : theme.colors.gray[500]
}
},
linkWidth: (link) => {
const linkIsHighlighted =
(link.source as NodeObject).id! === centralHighlightedNode?.id! ||
(link.target as NodeObject).id! === centralHighlightedNode?.id!
if (!physics.highlightAnim) {
return linkIsHighlighted ? physics.linkWidth * physics.highlightLinkSize : physics.linkWidth
}
const linkWasHighlighted =
(link.source as NodeObject).id! === lastHoverNode.current?.id! ||
(link.target as NodeObject).id! === lastHoverNode.current?.id!
return linkIsHighlighted
? physics.linkWidth * (1 + opacity * (physics.highlightLinkSize - 1))
: linkWasHighlighted
? physics.linkWidth * (1 + opacity * (physics.highlightLinkSize - 1))
: physics.linkWidth
},
linkDirectionalParticleWidth: physics.particlesWidth,
d3AlphaDecay: physics.alphaDecay,
d3AlphaMin: physics.alphaMin,
d3VelocityDecay: physics.velocityDecay,
onNodeClick,
onBackgroundClick: () => {
setScope((currentScope) => ({
...currentScope,
nodeIds: [],
}))
},
onNodeHover: (node) => {
if (!physics.hover) {
return
}
setHoverNode(node)
},
}
return (
<div>
{threeDim ? (
<ForceGraph3D ref={graph3dRef} {...graphCommonProps} nodeThreeObjectExtend={true} />
) : (
<ForceGraph2D ref={graph2dRef} {...graphCommonProps} />
)}
</div>
)
}
function numbereWithinRange(num: number, min: number, max: number) {
return Math.min(Math.max(num, min), max)
}
|