@ue-too/board-react-adapter / index / Board

関数: Board()

Board(props): Element

定義: components/Board.tsx:185

Main Board component with provider wrapper for React applications.

パラメータ

props

BoardProps

Component props

戻り値

Element

Remarks

This component provides a complete infinite canvas solution for React. It combines:

• A BoardProvider to share the board instance across components
• A canvas element configured with the @ue-too/board package
• An integrated animation loop for drawing
• Support for child components that can access board state and controls

Features

• Infinite Canvas: Pan, zoom, and rotate with mouse/touch input
• Animation Loop: Automatic rendering loop with customizable draw callback
• React Integration: Use hooks to access camera state and controls
• Fullscreen Support: Optional auto-resize with window
• Type-Safe: Full TypeScript support

Usage Pattern

1. Render the Board component
2. Provide an animation callback for drawing
3. Use child components with board hooks for UI controls
4. Access camera state reactively via hooks

Examples

Basic usage with drawing

function App() {
  return (
    <Board
      width={800}
      height={600}
      animationCallback={(timestamp, ctx) => {
        // Draw a rectangle at world position (0, 0)
        ctx.fillStyle = 'blue';
        ctx.fillRect(0, 0, 100, 100);
      }}
    />
  );
}

With child components and camera controls

function CameraControls() {
  const { panToWorld, zoomTo } = useCameraInput();
  const position = useBoardCameraState('position');

  return (
    <div style={{ position: 'absolute', top: 10, left: 10 }}>
      <p>Position: ({position.x.toFixed(0)}, {position.y.toFixed(0)})</p>
      <button onClick={() => panToWorld({ x: 0, y: 0 })}>Center</button>
      <button onClick={() => zoomTo(1.0)}>Reset Zoom</button>
    </div>
  );
}

function App() {
  return (
    <Board width={800} height={600} animationCallback={drawScene}>
      <CameraControls />
    </Board>
  );
}

Fullscreen mode

function App() {
  return (
    <Board
      fullScreen
      animationCallback={(timestamp, ctx) => {
        // Canvas automatically resizes to window size
        ctx.fillStyle = 'green';
        ctx.fillRect(-50, -50, 100, 100);
      }}
    />
  );
}

参照

• useBoardCameraState for accessing camera state
• useCameraInput for camera control functions
• useBoard for accessing the board instance