CUP DRAFTING CALCULATION SOFTWARE PRINT CUP DRAWING  
Measurements for cup drafting
Cup pattern drafting
Measurements taken from the rounded bone
Draw three semicircles from C (intersection of two perpendicular lines)
Diameter of the rounded bone (GD)
red (cup front) radius 1
Front length (Vp)
blue (cup bottom) radius 2
Side length (Vb)
green (cup side) radius 3
Measurements taken from a client
Calculation and dart drafting:
Bust circumference
opening of the front dart P:P1 and P:P2
Vertical bust diameter
opening of the side dart in the top B:B1
Strap width
opening of the side dart in the bottom B:B2
opening of the lower dart on the right N:N1
opening of the dart on the left N:N2
Cup front and cup side drafting:
Front length (Vp) P1:P3
Side length (Vb) B1:B3
Upper cup part drafting:
Position of perpendicular line С:С1
Upper edge of the cup (upward on the perpendicular line from C) С:С2
Strap attachment - C3 in the intersection of green semicircle and a perpendicular line from C1
Strap cradle С3:С10
Connect C10, C2, P3 with a smooth line  
Darts drafting:
C:C4=C:C5 (lower dart)
C:C6=C:C7 (front dart)
C:C8=C:C9 (side dart)
Deflection from C6 and C8
Deflection from C7 and C9
Deflection from C4 and C5
Cup bottom drafting:
Length of the semicircle B2:N1 (it should be the value in the cell)
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Length of the semicircle P2:N2 (it should be the value in the cell)