all files / src/shared/ calculateMinMax.js

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import getMinMax from './getMinMax.js';
 
/**
 * Check the minimum and maximum values in the imageFrame pixel data
 * match with the provided smallestPixelValue and largestPixelValue metaData.
 *
 * If 'strict' is true, log to the console a warning if these values do not match.
 * Otherwise, correct them automatically.
 *
 * @param {Object} imageFrame
 * @param {Boolean} strict
 */
export default function calculateMinMax (imageFrame, strict = true) {
  const minMax = getMinMax(imageFrame.pixelData);
 
  if (strict === true) {
    Eif (imageFrame.smallestPixelValue !== minMax.min) {
      console.warn('Image smallestPixelValue tag is incorrect. Rendering performance will suffer considerably.');
    }
 
    Eif (imageFrame.largestPixelValue !== minMax.max) {
      console.warn('Image largestPixelValue tag is incorrect. Rendering performance will suffer considerably.');
    }
  } else {
    imageFrame.smallestPixelValue = minMax.min;
    imageFrame.largestPixelValue = minMax.max;
  }
}