def resonant( self, Y ):
"""Check resonance for all integer wire lengths "near" Y.
"To prevent any resonance cut the guy wire so that no section displays a length in feet that can be evenly divided by 16 or 22"
:param Y: is a guy-wire length.
:return: True if any integer X "near" Y has X%16 or X%22
"""
Y_f = int(FOOT.from_std( Y ))
for X in range( int( .95*Y_f+.5 ), int(1.05*Y_f+.5) ):
if X%self.r_1 == 0 or X%self.r_2 == 0:
return True
return False
def solve(find=None):
"""Gather input values for one of the various scenarios.
:param find: The variable we're going to be finding,
this must be one of "B", "A", "G", "D" or "F".
"""
assert find in ( "B", "A", "G", "D", "F" )
if find == 'B' or find == 'D' or find == 'F':
B= None
else:
B= input_float( "ENTER: Beam Candle Power Seconds ..........? " )
if find == 'A' or find == 'D' or find == 'F':
A= None
else:
A= input_float( "ENTER: Film speed ......................ISO? " )
if find == 'G':
G= None
else:
G= input_float( "ENTER: Guide Number (metres)...............? " )
if G is not None:
G= FOOT.from_std( METRE.to_std( G ) )
else:
G= input_float( "ENTER: Guide Number (feet).................? " )
if find == 'D' or find == 'B' or find == 'A':
D= None
else:
D= input_float( "ENTER: Subject distance (metres) ..........? " )
if D is not None:
D= FOOT.from_std( METRE.to_std( D ) )
else:
D= input_float( "ENTER: Subject distance (feet) ............? " )
if find == 'F' or find == 'B' or find == 'A':
F= None
else:
F= input_float( "ENTER: Aperture .........................ƒ/? " )
display( B=B, A=A, G=G, D=D, F=F )
