function updateCanvas()

in video-object-detection/main.js [109:140]

• 23 lines of code
• 3 McCabe index (conditional complexity)

function updateCanvas() {
  const { width, height } = canvas;
  context.drawImage(video, 0, 0, width, height);

  if (!isProcessing) {
    isProcessing = true;
    (async function () {
      // Read the current frame from the video
      const pixelData = context.getImageData(0, 0, width, height).data;
      const image = new RawImage(pixelData, width, height, 4);

      // Process the image and run the model
      const inputs = await processor(image);
      const { outputs } = await model(inputs);

      // Update UI
      overlay.innerHTML = "";

      const sizes = inputs.reshaped_input_sizes[0].reverse();
      outputs.tolist().forEach((x) => renderBox(x, sizes));

      if (previousTime !== undefined) {
        const fps = 1000 / (performance.now() - previousTime);
        status.textContent = `FPS: ${fps.toFixed(2)}`;
      }
      previousTime = performance.now();
      isProcessing = false;
    })();
  }

  window.requestAnimationFrame(updateCanvas);
}