reagraph

name	reagraph
description	Use when building interactive 2D or 3D graph or network visualizations in React with the reagraph library (GraphCanvas, node-link diagrams, force-directed layouts). Covers data shapes (GraphNode, GraphEdge), 16 layout algorithms, selection, lasso, camera controls, sizing strategies, and theming.

Reagraph

Reagraph is a WebGL-powered graph visualization library for React built on Three.js, React Three Fiber, D3, and Graphology. It renders interactive node-link diagrams in 2D and 3D with force-directed and hierarchical layouts.

Installation

npm install reagraph

Basic Setup

import { GraphCanvas } from 'reagraph';

const nodes = [
  { id: 'n-1', label: 'Node 1' },
  { id: 'n-2', label: 'Node 2' },
  { id: 'n-3', label: 'Node 3' },
];

const edges = [
  { id: 'e-1', source: 'n-1', target: 'n-2', label: 'Edge 1' },
  { id: 'e-2', source: 'n-1', target: 'n-3', label: 'Edge 2' },
];

function App() {
  return (
    <GraphCanvas nodes={nodes} edges={edges} />
  );
}

Data Shapes

GraphNode

interface GraphNode {
  id: string;           // Unique ID (required)
  label?: string;       // Display label
  subLabel?: string;    // Secondary label
  size?: number;        // Node size
  fill?: string;        // Override fill color
  icon?: string;        // Icon URL
  cluster?: string;     // Cluster group ID
  parents?: string[];   // Parent node IDs (for hierarchy)
  data?: any;           // Custom metadata
  labelVisible?: boolean; // Force label visibility
  fx?: number;          // Fixed X position
  fy?: number;          // Fixed Y position
  fz?: number;          // Fixed Z position
}

GraphEdge

interface GraphEdge {
  id: string;           // Unique ID (required)
  source: string;       // Source node ID (required)
  target: string;       // Target node ID (required)
  label?: string;       // Display label
  subLabel?: string;    // Secondary label
  size?: number;        // Edge thickness
  fill?: string;        // Override fill color
  dashed?: boolean;     // Dashed line style
  dashArray?: [number, number]; // [dashSize, gapSize]
  labelVisible?: boolean; // Force label visibility
  interpolation?: 'linear' | 'curved'; // Edge shape
  arrowPlacement?: 'none' | 'mid' | 'end'; // Arrow position
  subLabelPlacement?: 'below' | 'above'; // SubLabel position
}

Common Patterns

• Import from barrel: Always import { Component } from 'reagraph'
• Ref access: Use ref on GraphCanvas for imperative methods (centerGraph, fitNodesInView, exportCanvas)
• Per-node styling: Set fill, size, icon directly on GraphNode objects to override theme defaults
• Per-edge styling: Set fill, dashed, interpolation directly on GraphEdge objects
• 3D layouts: Append 3d suffix to layout names (e.g. forceDirected3d, treeTd3d)
• Sizing strategies: Use sizingType prop to auto-size nodes by pagerank, centrality, or custom attribute

Component Index

Graph

GraphCanvas, GraphScene

Nodes

Sphere, SphereWithIcon, SphereWithSvg, Svg, Badge, custom NodeRenderer

Edges

Edge, Arrow, self-loops, dashed, curved, edge aggregation

Layout

16 layout algorithms: forceDirected, circular, concentric, tree, radial, hierarchical, nooverlap, forceatlas2, custom

Interaction

useSelection, Lasso, CameraControls, useCenterGraph, RadialMenu, useCollapse

Styling

Theme (light/dark), SizingType (pagerank, centrality, attribute)