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https://github.com/linsa-io/linsa.git
synced 2026-01-12 12:20:23 +01:00
Don't draw text nodes that are outside of the screen
This commit is contained in:
Damian Tarnawski
@@ -22,21 +22,22 @@ const COLORS: readonly HSL[] = [
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]
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/* use a plain object instead of Map for faster lookups */
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type ColorMap = { [key: string]: string }
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type HSLMap = Map<fg.graph.Node, HSL>
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type ColorMap = {[key: string]: string}
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type HSLMap = Map<fg.graph.Node, HSL>
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const MAX_COLOR_ITERATIONS = 10
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/**
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* Add a color to a node and all its connected nodes.
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*/
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const visitColorNode = (
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prev: fg.graph.Node,
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node: fg.graph.Node,
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hsl_map: HSLMap,
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add: HSL,
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function visitColorNode(
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g: fg.graph.Graph,
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prev: fg.graph.Node,
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node: fg.graph.Node,
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hsl_map: HSLMap,
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add: HSL,
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iteration: number = 1
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): void => {
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): void {
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if (iteration > MAX_COLOR_ITERATIONS) return
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const color = hsl_map.get(node)
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@@ -50,20 +51,24 @@ const visitColorNode = (
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color[2] = (color[2] + add[2] * add_strength) / (1 + add_strength)
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}
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for (const edge of node.edges) {
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const other_node = edge.a === node ? edge.b : edge.a
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if (other_node === prev) continue
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visitColorNode(node, other_node, hsl_map, add, iteration + 1)
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for (let edge of g.edges) {
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let b: fg.graph.Node
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if (edge.a === node) b = edge.b
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else if (edge.b === node) b = edge.a
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else continue
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if (b !== prev) {
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visitColorNode(g, node, b, hsl_map, add, iteration + 1)
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}
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}
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}
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function generateColorMap(nodes: readonly fg.graph.Node[]): ColorMap {
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function generateColorMap(g: fg.graph.Graph, nodes: readonly fg.graph.Node[]): ColorMap {
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const hls_map: HSLMap = new Map()
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for (let i = 0; i < nodes.length; i++) {
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const node = nodes[i]!
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const color = COLORS[i % COLORS.length]!
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visitColorNode(node, node, hls_map, color)
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visitColorNode(g, node, node, hls_map, color)
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}
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const color_map: ColorMap = {}
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@@ -74,14 +79,15 @@ function generateColorMap(nodes: readonly fg.graph.Node[]): ColorMap {
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return color_map
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}
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function generateNodesFromRawData(raw_data: RawGraphNode[]): [fg.graph.Node[], fg.graph.Edge[]] {
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function generateNodesFromRawData(g: fg.graph.Graph, raw_data: RawGraphNode[]): void {
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const nodes_map = new Map<string, fg.graph.Node>()
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const edges: fg.graph.Edge[] = []
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for (const raw of raw_data) {
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const node = fg.graph.zeroNode()
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const node = fg.graph.make_node()
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node.key = raw.name
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node.label = raw.prettyName
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fg.graph.add_node(g, node)
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nodes_map.set(raw.name, node)
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}
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@@ -90,38 +96,31 @@ function generateNodesFromRawData(raw_data: RawGraphNode[]): [fg.graph.Node[], f
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for (const name_b of raw.connectedTopics) {
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const node_b = nodes_map.get(name_b)!
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const edge = fg.graph.connect(node_a, node_b)
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edges.push(edge)
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fg.graph.connect(g, node_a, node_b)
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}
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}
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const nodes = Array.from(nodes_map.values())
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fg.graph.randomizeNodePositions(nodes, GRAPH_OPTIONS.grid_size)
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return [nodes, edges]
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fg.graph.spread_positions(g)
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}
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function filterNodes(
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graph: fg.graph.Graph,
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nodes: readonly fg.graph.Node[],
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edges: readonly fg.graph.Edge[],
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s: State,
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filter: string
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): void {
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fg.graph.clear_nodes(s.graph)
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if (filter === "") {
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graph.nodes = nodes.slice()
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graph.edges = edges.slice()
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fg.graph.resetGraphGrid(graph.grid, graph.nodes)
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return
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s.graph.nodes.push(...s.nodes)
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s.graph.edges.push(...s.edges)
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} else {
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// regex matching all letters of the filter (out of order)
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const regex = new RegExp(filter.split("").join(".*"), "i")
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s.graph.nodes = s.nodes.filter(node => regex.test(node.label))
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s.graph.edges = s.edges.filter(edge => regex.test(edge.a.label) && regex.test(edge.b.label))
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}
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// regex matching all letters of the filter (out of order)
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const regex = new RegExp(filter.split("").join(".*"), "i")
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graph.nodes = nodes.filter(node => regex.test(node.label))
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graph.edges = edges.filter(edge => regex.test(edge.a.label) && regex.test(edge.b.label))
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fg.graph.resetGraphGrid(graph.grid, graph.nodes)
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fg.graph.add_nodes_to_grid(s.graph, s.nodes)
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}
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const GRAPH_OPTIONS: fg.graph.Options = {
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@@ -150,68 +149,74 @@ const simulateGraph = (
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/*
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Push nodes away from the center (the title)
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*/
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let grid_radius = graph.grid.size / 2
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let grid_radius = graph.options.grid_size / 2
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let origin_x = grid_radius + canvas.translate.x
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let origin_y = grid_radius + canvas.translate.y
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let vmax = Math.max(vw, vh)
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let push_radius =
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(Math.min(TITLE_SIZE_PX, vw / 2, vh / 2) / vmax) * (graph.grid.size / canvas.scale) +
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(Math.min(TITLE_SIZE_PX, vw / 2, vh / 2) / vmax) * (graph.options.grid_size / canvas.scale) +
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80 /* additional margin for when scrolled in */
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for (let node of graph.nodes) {
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let dist_x = node.position.x - origin_x
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let dist_y = (node.position.y - origin_y) * 2
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let dist_x = node.pos.x - origin_x
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let dist_y = (node.pos.y - origin_y) * 2
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let dist = Math.sqrt(dist_x * dist_x + dist_y * dist_y)
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if (dist > push_radius) continue
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let strength = ease.in_expo((push_radius - dist) / push_radius)
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node.velocity.x += strength * (node.position.x - origin_x) * 10 * alpha
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node.velocity.y += strength * (node.position.y - origin_y) * 10 * alpha
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node.vel.x += strength * (node.pos.x - origin_x) * 10 * alpha
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node.vel.y += strength * (node.pos.y - origin_y) * 10 * alpha
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}
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}
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const drawGraph = (canvas: fg.canvas.CanvasState, color_map: ColorMap): void => {
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fg.canvas.resetFrame(canvas)
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fg.canvas.drawEdges(canvas)
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const drawGraph = (c: fg.canvas.CanvasState, color_map: ColorMap): void => {
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fg.canvas.resetFrame(c)
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fg.canvas.drawEdges(c)
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/*
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Draw text nodes
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*/
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let { ctx, graph } = canvas
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let { width, height } = canvas.ctx.canvas
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let max_size = Math.max(width, height)
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let grid_size = c.graph.options.grid_size
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let max_size = Math.max(c.ctx.canvas.width, c.ctx.canvas.height)
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ctx.textAlign = "center"
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ctx.textBaseline = "middle"
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let clip_rect = fg.canvas.get_ctx_clip_rect(c.ctx, {x: 100, y: 20})
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for (let node of graph.nodes) {
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let opacity = 0.6 + ((node.mass - 1) / 50) * 4
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c.ctx.textAlign = "center"
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c.ctx.textBaseline = "middle"
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ctx.font = `${max_size / 200 + (((node.mass - 1) / 5) * (max_size / 100)) / canvas.scale}px sans-serif`
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for (let node of c.graph.nodes) {
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ctx.fillStyle =
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node.anchor || canvas.hovered_node === node
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let x = node.pos.x / grid_size * max_size
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let y = node.pos.y / grid_size * max_size
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if (fg.canvas.in_rect_xy(clip_rect, x, y)) {
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let opacity = 0.6 + ((node.mass - 1) / 50) * 4
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c.ctx.font = `${max_size / 200 + (((node.mass - 1) / 5) * (max_size / 100)) / c.scale}px sans-serif`
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c.ctx.fillStyle = node.anchor || c.hovered_node === node
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? `rgba(129, 140, 248, ${opacity})`
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: `hsl(${color_map[node.key as string]} / ${opacity})`
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ctx.fillText(
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node.label,
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(node.position.x / graph.grid.size) * max_size,
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(node.position.y / graph.grid.size) * max_size
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)
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c.ctx.fillText(node.label, x, y)
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}
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}
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}
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class State {
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ctx: CanvasRenderingContext2D | null = null
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/* copy of all nodes to filter them */
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nodes: fg.graph.Node[] = []
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edges: fg.graph.Edge[] = []
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graph: fg.graph.Graph = fg.graph.makeGraph(GRAPH_OPTIONS, [], [])
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graph: fg.graph.Graph = fg.graph.make_graph(GRAPH_OPTIONS)
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gestures: fg.canvas.CanvasGestures | null = null
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loop: raf.AnimationLoop | null = null
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raf_id: number = 0
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bump_end = 0
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alpha = 9
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frame_iter_limit = raf.frameIterationsLimit()
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@@ -227,17 +232,18 @@ function init(
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canvas_el: HTMLCanvasElement | null
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}
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) {
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let { canvas_el, raw_nodes } = props
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let {canvas_el, raw_nodes} = props
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if (canvas_el == null) return
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s.ctx = canvas_el.getContext("2d")
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if (s.ctx == null) return
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;[s.nodes, s.edges] = generateNodesFromRawData(raw_nodes)
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let color_map = generateColorMap(s.nodes)
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generateNodesFromRawData(s.graph, raw_nodes)
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s.nodes = s.graph.nodes.slice()
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s.edges = s.graph.edges.slice()
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s.graph = fg.graph.makeGraph(GRAPH_OPTIONS, s.nodes.slice(), s.edges.slice())
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let color_map = generateColorMap(s.graph, s.nodes)
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let canvas_state = fg.canvas.canvasState({
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ctx: s.ctx,
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@@ -254,43 +260,46 @@ function init(
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})
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s.ro.observe(canvas_el)
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let loop = (s.loop = raf.makeAnimationLoop(time => {
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function loop(time: number) {
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let is_active = gestures.mode.type === fg.canvas.Mode.DraggingNode
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let iterations = raf.calcIterations(s.frame_iter_limit, time)
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let iterations = Math.min(2, raf.calcIterations(s.frame_iter_limit, time))
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for (let i = Math.min(iterations, 2); i >= 0; i--) {
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for (let i = iterations; i >= 0; i--) {
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s.alpha = raf.updateAlpha(s.alpha, is_active || time < s.bump_end)
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simulateGraph(s.alpha, s.graph, canvas_state, window.innerWidth, window.innerHeight)
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}
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drawGraph(canvas_state, color_map)
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}))
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raf.loopStart(loop)
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s.raf_id = requestAnimationFrame(loop)
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}
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s.raf_id = requestAnimationFrame(loop)
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let gestures = (s.gestures = fg.canvas.canvasGestures({
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canvas: canvas_state,
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onGesture: e => {
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switch (e.type) {
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case fg.canvas.GestureEventType.Translate:
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s.bump_end = raf.bump(s.bump_end)
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break
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case fg.canvas.GestureEventType.NodeClick:
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props.onNodeClick(e.node.key as string)
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break
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case fg.canvas.GestureEventType.NodeDrag:
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fg.graph.changeNodePosition(canvas_state.graph.grid, e.node, e.pos.x, e.pos.y)
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break
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case fg.canvas.GestureEventType.Translate:
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s.bump_end = raf.bump(s.bump_end)
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break
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case fg.canvas.GestureEventType.NodeClick:
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props.onNodeClick(e.node.key as string)
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break
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case fg.canvas.GestureEventType.NodeDrag:
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fg.graph.set_position(canvas_state.graph, e.node, e.pos)
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break
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}
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}
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}))
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}
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function updateQuery(s: State, filter_query: string) {
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s.schedule_filter.trigger(s.graph, s.nodes, s.edges, filter_query)
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s.schedule_filter.trigger(s, filter_query)
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s.bump_end = raf.bump(s.bump_end)
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}
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function cleanup(s: State) {
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s.loop && raf.loopClear(s.loop)
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cancelAnimationFrame(s.raf_id)
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s.gestures && fg.canvas.cleanupCanvasGestures(s.gestures)
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s.schedule_filter.clear()
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s.ro.disconnect()
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@@ -13,7 +13,7 @@
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"@dnd-kit/core": "^6.1.0",
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"@dnd-kit/sortable": "^8.0.0",
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"@hookform/resolvers": "^3.9.0",
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"@nothing-but/force-graph": "^0.7.3",
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"@nothing-but/force-graph": "^0.8.2",
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"@omit/react-confirm-dialog": "^1.1.5",
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"@omit/react-fancy-switch": "^0.1.1",
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"@radix-ui/react-avatar": "^1.1.0",
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