public getCropArea()

in source/image-handler/image-handler.ts [308:330]

• 21 lines of code
• 7 McCabe index (conditional complexity)

  public getCropArea(boundingBox: BoundingBox, padding: number, boxSize: BoxSize): BoundingBox {
    // calculate needed options dimensions
    let left = Math.floor(boundingBox.left * boxSize.width - padding);
    let top = Math.floor(boundingBox.top * boxSize.height - padding);
    let extractWidth = Math.floor(boundingBox.width * boxSize.width + padding * 2);
    let extractHeight = Math.floor(boundingBox.height * boxSize.height + padding * 2);

    // check if dimensions fit within image dimensions and re-adjust if necessary
    left = left < 0 ? 0 : left;
    top = top < 0 ? 0 : top;
    const maxWidth = boxSize.width - left;
    const maxHeight = boxSize.height - top;
    extractWidth = extractWidth > maxWidth ? maxWidth : extractWidth;
    extractHeight = extractHeight > maxHeight ? maxHeight : extractHeight;

    // Calculate the smart crop area
    return {
      left: left,
      top: top,
      width: extractWidth,
      height: extractHeight
    };
  }