freesewing/markdown/dev/howtos/code/storing-path-length/en.md

title	for	about
Storing the seam length to use in another part	developers	Shows how to store a seam length so you can true the seam of another part

See this example in our source code

• packages/aaron/src/front.js

Often when designing patterns, we need to true a seam which means to make sure that two parts that need to be joined together are the same distance.

The example below is from Aaron and stores the length of the armhole seam:

  // Store length of armhole and neck opening
  store.set(
    'frontArmholeLength',
    new Path()
      .move(points.armhole)
      .curve(points.armholeCp2, points.strapRightCp1, points.strapRight)
      .length()
  )