Add router

This commit is contained in:
Aiden Bai
2022-05-01 22:06:33 -07:00
parent 416dc0b85c
commit bcb166c21c
4 changed files with 427 additions and 320 deletions

View File

@ -1,51 +1,73 @@
async function drawGraph(url, baseUrl, pathColors, depth, enableDrag, enableLegend, enableZoom) {
const { index, links, content } = await fetchData
const curPage = url.replace(baseUrl, "")
async function drawGraph(
url,
baseUrl,
pathColors,
depth,
enableDrag,
enableLegend,
enableZoom
) {
const container = document.getElementById('graph-container');
const parseIdsFromLinks = (links) => [...(new Set(links.flatMap(link => ([link.source, link.target]))))]
const { index, links, content } = await fetchData;
const curPage = url.replace(baseUrl, '');
const neighbours = new Set()
const wl = [curPage || "/", "__SENTINEL"]
const parseIdsFromLinks = (links) => [
...new Set(links.flatMap((link) => [link.source, link.target])),
];
// links is mutated by d3
// we want to use links later on, so we make a copy and pass
// that one to d3
const copyLinks = JSON.parse(JSON.stringify(links));
const neighbours = new Set();
const wl = [curPage || '/', '__SENTINEL'];
if (depth >= 0) {
while (depth >= 0 && wl.length > 0) {
// compute neighbours
const cur = wl.shift()
if (cur === "__SENTINEL") {
depth--
wl.push("__SENTINEL")
const cur = wl.shift();
if (cur === '__SENTINEL') {
depth--;
wl.push('__SENTINEL');
} else {
neighbours.add(cur)
const outgoing = index.links[cur] || []
const incoming = index.backlinks[cur] || []
wl.push(...outgoing.map(l => l.target), ...incoming.map(l => l.source))
neighbours.add(cur);
const outgoing = index.links[cur] || [];
const incoming = index.backlinks[cur] || [];
wl.push(
...outgoing.map((l) => l.target),
...incoming.map((l) => l.source)
);
}
}
} else {
parseIdsFromLinks(links).forEach(id => neighbours.add(id))
parseIdsFromLinks(copyLinks).forEach((id) => neighbours.add(id));
}
const data = {
nodes: [...neighbours].map(id => ({ id })),
links: links.filter(l => neighbours.has(l.source) && neighbours.has(l.target)),
}
nodes: [...neighbours].map((id) => ({ id })),
links: copyLinks.filter(
(l) => neighbours.has(l.source) && neighbours.has(l.target)
),
};
const color = (d) => {
if (d.id === curPage || (d.id === "/" && curPage === "")) {
return "var(--g-node-active)"
if (d.id === curPage || (d.id === '/' && curPage === '')) {
return 'var(--g-node-active)';
}
for (const pathColor of pathColors) {
const path = Object.keys(pathColor)[0]
const colour = pathColor[path]
const path = Object.keys(pathColor)[0];
const colour = pathColor[path];
if (d.id.startsWith(path)) {
return colour
return colour;
}
}
return "var(--g-node)"
}
return 'var(--g-node)';
};
const drag = simulation => {
const drag = (simulation) => {
function dragstarted(event, d) {
if (!event.active) simulation.alphaTarget(1).restart();
d.fx = d.x;
@ -63,169 +85,197 @@ async function drawGraph(url, baseUrl, pathColors, depth, enableDrag, enableLege
d.fy = null;
}
const noop = () => { }
return d3.drag()
.on("start", enableDrag ? dragstarted : noop)
.on("drag", enableDrag ? dragged : noop)
.on("end", enableDrag ? dragended : noop);
}
const noop = () => {};
return d3
.drag()
.on('start', enableDrag ? dragstarted : noop)
.on('drag', enableDrag ? dragged : noop)
.on('end', enableDrag ? dragended : noop);
};
const height = Math.max(document.getElementById("graph-container").offsetHeight, 250)
const width = document.getElementById("graph-container").offsetWidth
const height = Math.max(container.offsetHeight, 250);
const width = container.offsetWidth;
const simulation = d3.forceSimulation(data.nodes)
.force("charge", d3.forceManyBody().strength(-30))
.force("link", d3.forceLink(data.links).id(d => d.id).distance(40))
.force("center", d3.forceCenter());
const simulation = d3
.forceSimulation(data.nodes)
.force('charge', d3.forceManyBody().strength(-30))
.force(
'link',
d3
.forceLink(data.links)
.id((d) => d.id)
.distance(40)
)
.force('center', d3.forceCenter());
const svg = d3.select('#graph-container')
const svg = d3
.select('#graph-container')
.append('svg')
.attr('width', width)
.attr('height', height)
.attr("viewBox", [-width / 2, -height / 2, width, height]);
.attr('viewBox', [-width / 2, -height / 2, width, height]);
if (enableLegend) {
const legend = [
{ "Current": "var(--g-node-active)" },
{ "Note": "var(--g-node)" },
...pathColors
]
{ Current: 'var(--g-node-active)' },
{ Note: 'var(--g-node)' },
...pathColors,
];
legend.forEach((legendEntry, i) => {
const key = Object.keys(legendEntry)[0]
const colour = legendEntry[key]
svg.append("circle").attr("cx", -width / 2 + 20).attr("cy", height / 2 - 30 * (i + 1)).attr("r", 6).style("fill", colour)
svg.append("text").attr("x", -width / 2 + 40).attr("y", height / 2 - 30 * (i + 1)).text(key).style("font-size", "15px").attr("alignment-baseline", "middle")
})
const key = Object.keys(legendEntry)[0];
const colour = legendEntry[key];
svg
.append('circle')
.attr('cx', -width / 2 + 20)
.attr('cy', height / 2 - 30 * (i + 1))
.attr('r', 6)
.style('fill', colour);
svg
.append('text')
.attr('x', -width / 2 + 40)
.attr('y', height / 2 - 30 * (i + 1))
.text(key)
.style('font-size', '15px')
.attr('alignment-baseline', 'middle');
});
}
// draw links between nodes
const link = svg.append("g")
.selectAll("line")
const link = svg
.append('g')
.selectAll('line')
.data(data.links)
.join("line")
.attr("class", "link")
.attr("stroke", "var(--g-link)")
.attr("stroke-width", 2)
.attr("data-source", d => d.source.id)
.attr("data-target", d => d.target.id)
.join('line')
.attr('class', 'link')
.attr('stroke', 'var(--g-link)')
.attr('stroke-width', 2)
.attr('data-source', (d) => d.source.id)
.attr('data-target', (d) => d.target.id);
// svg groups
const graphNode = svg.append("g")
.selectAll("g")
const graphNode = svg
.append('g')
.selectAll('g')
.data(data.nodes)
.enter().append("g")
.enter()
.append('g');
// calculate radius
const nodeRadius = (d) => {
const numOut = index.links[d.id]?.length || 0
const numIn = index.backlinks[d.id]?.length || 0
return 3 + (numOut + numIn) / 4
}
const numOut = index.links[d.id]?.length || 0;
const numIn = index.backlinks[d.id]?.length || 0;
return 3 + (numOut + numIn) / 4;
};
// draw individual nodes
const node = graphNode.append("circle")
.attr("class", "node")
.attr("id", (d) => d.id)
.attr("r", nodeRadius)
.attr("fill", color)
.style("cursor", "pointer")
.on("click", (_, d) => {
window.location.href = `${baseUrl}/${decodeURI(d.id).replace(/\s+/g, '-')}/`
const node = graphNode
.append('circle')
.attr('class', 'node')
.attr('id', (d) => d.id)
.attr('r', nodeRadius)
.attr('fill', color)
.style('cursor', 'pointer')
.on('click', (_, d) => {
window.navigate(
new URL(`${baseUrl}${decodeURI(d.id).replace(/\s+/g, '-')}/`),
'.singlePage'
);
})
.on("mouseover", function(_, d) {
d3.selectAll(".node")
.on('mouseover', function (_, d) {
d3.selectAll('.node')
.transition()
.duration(100)
.attr("fill", "var(--g-node-inactive)")
.attr('fill', 'var(--g-node-inactive)');
const neighbours = parseIdsFromLinks([...(index.links[d.id] || []), ...(index.backlinks[d.id] || [])])
const neighbourNodes = d3.selectAll(".node").filter(d => neighbours.includes(d.id))
const currentId = d.id
const linkNodes = d3.selectAll(".link").filter(d => d.source.id === currentId || d.target.id === currentId)
const neighbours = parseIdsFromLinks([
...(index.links[d.id] || []),
...(index.backlinks[d.id] || []),
]);
const neighbourNodes = d3
.selectAll('.node')
.filter((d) => neighbours.includes(d.id));
const currentId = d.id;
const linkNodes = d3
.selectAll('.link')
.filter((d) => d.source.id === currentId || d.target.id === currentId);
// highlight neighbour nodes
neighbourNodes
.transition()
.duration(200)
.attr("fill", color)
neighbourNodes.transition().duration(200).attr('fill', color);
// highlight links
linkNodes
.transition()
.duration(200)
.attr("stroke", "var(--g-link-active)")
.attr('stroke', 'var(--g-link-active)');
// show text for self
d3.select(this.parentNode)
.raise()
.select("text")
.select('text')
.transition()
.duration(200)
.style("opacity", 1)
.raise()
}).on("mouseleave", function(_, d) {
d3.selectAll(".node")
.transition()
.duration(200)
.attr("fill", color)
.style('opacity', 1);
})
.on('mouseleave', function (_, d) {
d3.selectAll('.node').transition().duration(200).attr('fill', color);
const currentId = d.id
const linkNodes = d3.selectAll(".link").filter(d => d.source.id === currentId || d.target.id === currentId)
const currentId = d.id;
const linkNodes = d3
.selectAll('.link')
.filter((d) => d.source.id === currentId || d.target.id === currentId);
linkNodes
.transition()
.duration(200)
.attr("stroke", "var(--g-link)")
linkNodes.transition().duration(200).attr('stroke', 'var(--g-link)');
d3.select(this.parentNode)
.select("text")
.select('text')
.transition()
.duration(200)
.style("opacity", 0)
.style('opacity', 0);
})
.call(drag(simulation));
// draw labels
const labels = graphNode.append("text")
.attr("dx", 0)
.attr("dy", d => nodeRadius(d) + 8 + "px")
.attr("text-anchor", "middle")
.text((d) => content[d.id]?.title || d.id.replace("-", " "))
.style("opacity", 0)
.style("pointer-events", "none")
.style("font-size", "0.4em")
const labels = graphNode
.append('text')
.attr('dx', 0)
.attr('dy', (d) => nodeRadius(d) + 8 + 'px')
.attr('text-anchor', 'middle')
.text((d) => content[d.id]?.title || d.id.replace('-', ' '))
.style('opacity', 0)
.style('pointer-events', 'none')
.style('font-size', '0.4em')
.raise()
.call(drag(simulation));
// set panning
if (enableZoom) {
svg.call(d3.zoom()
.extent([[0, 0], [width, height]])
.scaleExtent([0.25, 4])
.on("zoom", ({ transform }) => {
link.attr("transform", transform);
node.attr("transform", transform);
const scale = transform.k
const scaledOpacity = Math.max((scale - 1) / 3.75, 0)
labels
.attr("transform", transform)
.style("opacity", scaledOpacity)
}));
svg.call(
d3
.zoom()
.extent([
[0, 0],
[width, height],
])
.scaleExtent([0.25, 4])
.on('zoom', ({ transform }) => {
link.attr('transform', transform);
node.attr('transform', transform);
const scale = transform.k;
const scaledOpacity = Math.max((scale - 1) / 3.75, 0);
labels.attr('transform', transform).style('opacity', scaledOpacity);
})
);
}
// progress the simulation
simulation.on("tick", () => {
simulation.on('tick', () => {
link
.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y)
node
.attr("cx", d => d.x)
.attr("cy", d => d.y)
labels
.attr("x", d => d.x)
.attr("y", d => d.y)
.attr('x1', (d) => d.source.x)
.attr('y1', (d) => d.source.y)
.attr('x2', (d) => d.target.x)
.attr('y2', (d) => d.target.y);
node.attr('cx', (d) => d.x).attr('cy', (d) => d.y);
labels.attr('x', (d) => d.x).attr('y', (d) => d.y);
});
}