@pixi/utils/lib/media/trimCanvas.mjs

Collection of utilities used by PixiJS

import { getCanvasBoundingBox } from './getCanvasBoundingBox.mjs';

function trimCanvas(canvas) {
  const boundingBox = getCanvasBoundingBox(canvas);
  const { width, height } = boundingBox;
  let data = null;
  if (!boundingBox.isEmpty()) {
    const context = canvas.getContext("2d");
    if (context === null) {
      throw new TypeError("Failed to get canvas 2D context");
    }
    data = context.getImageData(boundingBox.left, boundingBox.top, width, height);
  }
  return { width, height, data };
}

export { trimCanvas };
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