Examples
Examples
Try the starting example
- Finished waist circumference (cm)
- 70
- Finished skirt length (cm)
- 50
- Fullness fraction of full circle (fraction)
- 1
- Waist seam allowance (cm)
- 1
- Hem allowance radial (cm)
- 2
- Usable fabric width (cm)
- 160
- Waist seam-line radius (cm)
- 11.140846
- Cut inner radius (cm)
- 10.140846
- Cut outer radius (cm)
- 63.140846
- Quarter-sector bounding square side (cm)
- 63.140846
- Sector count
- 4
- Single-row sector layout length (cm)
- 126.281692
Try another scenario
- Finished waist circumference (cm)
- 70
- Finished skirt length (cm)
- 35
- Fullness fraction of full circle (fraction)
- 1
- Waist seam allowance (cm)
- 1
- Hem allowance radial (cm)
- 2
- Usable fabric width (cm)
- 160
- Waist seam-line radius (cm)
- 11.140846
- Cut inner radius (cm)
- 10.140846
- Cut outer radius (cm)
- 48.140846
- Quarter-sector bounding square side (cm)
- 48.140846
- Sector count
- 4
- Single-row sector layout length (cm)
- 96.281692
Calculation method
Calculation method
Waist seam-line radius (cm)
r=waist/(2*pi*fullness).
Cut inner radius (cm)
r-seam.
Cut outer radius (cm)
r+length+hem.
Quarter-sector bounding square side (cm)
R; use independent sectors of angle<=90°.
Sector count
ceil(4*fullness).
Single-row sector layout length (cm)
If R<=fabricWidth, ceil(sectors/floor(fabricWidth/R))*R; otherwise report Unsupported width.
Symbols and units
- a
- Finished waist circumference (cm)
- b
- Finished skirt length (cm)
- c
- Fullness fraction of full circle (fraction)
- d
- Waist seam allowance (cm)
- e
- Hem allowance radial (cm)
- f
- Usable fabric width (cm)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Fullness restricted to quarter increments; each quarter sector occupies one R by R square. A conservative nonoverlapping grid, no nesting, grain direction or side seam allowance; supply side seam allowance in pattern separately. Supported limits: waist,length,width>0; fullness in {0.25,0.5,0.75,1}; r>seam; hem>=0.
Are these inputs private?
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