Function formatDouble

src/parsers/colmapWriterUtils.ts:20–25

(value: number)

 * Both cases are guarded by only trimming when the mantissa contains a '.'.
 */
export function formatDouble(value: number): string {
  const str = value.toPrecision(17);
  const [mantissa, exponent] = str.split(/e/i);
  const trimmed = mantissa.includes('.') ? mantissa.replace(/\.?0+$/, '') : mantissa;
  return exponent !== undefined ? `${trimmed}e${exponent}` : trimmed;
}

/**
 * Sort map keys numerically. COLMAP sorts entries by ID before writing.