Something similar can be done on EQ7. Block library/ Orange peels/ Josephs Coat or Flower Petals. Save one of the blocks to Sketchbook and edit it by removing all the curves except the 2 for the wave. The pattern prints using templates with the seam allowance. When sewing the curve, gently lift the fabric as the seams are sewn, use a small stitch and sew slow. Snip the curve along the seam and press to the curve.
As proof by the posts on the QB, there are several ways to figure out quilt blocks. This one worked for me. Might not be exact, but it is similar as I stated above.