36 lines
980 B
TypeScript
36 lines
980 B
TypeScript
import dagre from '@dagrejs/dagre';
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import { Edge, Node } from 'reactflow';
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import { ISyntaxTreeNode } from '@/models/rslang';
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const NODE_WIDTH = 44;
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const NODE_HEIGHT = 44;
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const HOR_SEPARATION = 40;
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const VERT_SEPARATION = 40;
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export function applyLayout(nodes: Node<ISyntaxTreeNode>[], edges: Edge[]) {
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const dagreGraph = new dagre.graphlib.Graph().setDefaultEdgeLabel(() => ({}));
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dagreGraph.setGraph({
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rankdir: 'TB',
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ranksep: VERT_SEPARATION,
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nodesep: HOR_SEPARATION,
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ranker: 'network-simplex',
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align: undefined
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});
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nodes.forEach(node => {
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dagreGraph.setNode(node.id, { width: NODE_WIDTH, height: NODE_HEIGHT });
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});
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edges.forEach(edge => {
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dagreGraph.setEdge(edge.source, edge.target);
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});
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dagre.layout(dagreGraph);
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nodes.forEach(node => {
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const nodeWithPosition = dagreGraph.node(node.id);
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node.position.x = nodeWithPosition.x - NODE_WIDTH / 2;
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node.position.y = nodeWithPosition.y - NODE_HEIGHT / 2;
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});
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}
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