Issue #451: Can't create even Seam Allowance width with Bias options (dismine/valentina)

New issue 451: Can’t create even Seam Allowance width with Bias options https://bitbucket.org/valentinateam/valentina/issues/451/cant-create-even-seam-allowance-width-with

Susan Spencer:

In v.0.4.2.0 tried to create a .25cm seam allowance width around a neckline curve. The options in the Seam Allowance tool include a ‘Bias’ offset for x & y values.

The x & y bias values are absolute which may result in an undesired seam allowance width when using other measurement files.

Also requires a calculator to construct an accurate seam allowance width when the seam allowance is neither vertical (90 degrees) or horizontal (180 degrees).

This approach may need additional tweaking or redesign.

SeamAllowanceBias_1.png