print 'a tire of radius', 22 print 'has an area %.2f' % t.area() print 'and a circumference %.2f' % t.circumference() # Customer 3: National trucking company print 'a hill of with 7 degree incline is a' print '%d%% grade' % Circle.angle_to_grade(7) print # Customer 4: International graphics company # We have money and power! # We build circles NOT with radius # but with a bounding box diagonal c = Circle.from_bbd(10) print 'a circle with bounding box diagonal 10' print 'has a radius %.2f' % c.radius print 'and an area %.2f' % c.area() print # Customer 5: the government # We like to micromanage # we'll tell you not just WHAT to build # but also HOW to build it # ISO-12345-fake # Thou shalt not directly access the radius # inside area methods. Area methods must # infer the radius from the circumference.
def customer_4():
bbd = 10
c = Circle.from_bbd(bbd)
print 'a circle with bounding box diagonal of {}'.format(bbd)
print 'has a radius of {:.2f}'.format(c.radius)
print 'has an area of {:.2f}'.format(c.area())
m = MonsterTire(30)
print 'A monster tire with an inner radius of', m.radius
print 'has an inner area of', m.area()
print 'and outer perimeter of', m.perimeter()
print
## National Trucking Company #######################################
print u'An inclinometer reading of 5\N{degree sign}',
print 'is an %.1f%% grade.' % Circle.angle_to_grade(5)
print
# National Graphics Company ##################################
c = Circle.from_bbd(30)
print 'A circle with the bounding box diagonal of 30'
print 'has a radius of', c.radius
print 'an area of', c.area()
print 'and a perimeter of', c.perimeter()
print
## U.S. Government ###########################################
## ISO 10666: No circle software shall compute the area
## directly from instance data. It MUST first call
## perimeter() and infer the instance data indirectly.
## ISO 10667: No circle software shall store the radius.
## It MUST store the diameter and ONLY the diameter.
m = MonsterTire(30)
print 'A monster tire with an inner radius of', m.radius
print 'has an inner area of', m.area()
print 'and an outer perimeter of', m.perimeter()
print
## National Trucking Company ##############################################
print u'An inclinometer reading of 5\N{degree sign}',
print 'is a %.1f%% grade.' % Circle.angle_to_grade(5)
print
## National Graphics Company ##############################################
c = Circle.from_bbd(25)
print 'A circle with a bounding box diagonal of 25'
print 'has a radius of', c.radius
print 'a perimeter of', c.perimeter()
print 'and an area of', c.area()
print
## US Gov't ###############################################################
# ISO 10666: No circle software shall compute an area directly from
# instance data. It MUST first call perimeter and infer the data indirectly.
# ISO 10667: No circle software shall store the radius in an instance.
# It MUST store the diameter and ONLY the diameter.
print
# Customer 4: National Trucking Company
print 'an incline of 7 degrees'
print 'is a {:.0f} grade'.format(Circle.angle_to_grade(7))
print
#Customer 5: International Graphics company
# We have money and power!
# We build circles NOT with radius,
# But with a bounding box diagonal
# r = d / sqrt(r) or d^2 = 2r^2
c = Circle.from_bbd(5)
print 'a circle with diagonal 5'
print 'has a radius {:.2f}'.format(c.radius)
print 'and an area {:.2f}'.format(c.area())
print
# Customer 6: The Feds
# We like to micromanage
# We'll tell you not just WHAT to build but also
# How to build it
# It should not directly access the radius inside inside area methods
# Area methods must infer the radius from the circumference
# Circle instances must not store the radius
# A circle instance must store the diameter and ONLY the the diameter
t = Tire(30)
print 'A tire with an inner radius of', t.radius
print 'and inner area of', t.area()
print 'and an outer perimeter of', t.perimeter()
print
## National Trucking Company #####
print u'A 5\N{DEGREE SIGN} degree inclinometer reading',
print 'is %.1f%% grade' % Circle.angle_to_grade(5)
print
## National Graphic Company #########
c = Circle.from_bbd(40)
print 'A circle with a bounding box diagonal of 40'
print 'has a perimeter of', c.perimeter()
print 'and a radius of', c.radius
print 'and an area of', c.area()
print
## US Government ###########
# ISO 10111: All circle software SHALL NOT access the radius directly.
# It MUST call perimeter() and infer the radius indirectly
# ISO 10112: No circle software shall store the radius. It must store the diameter and only the diameter.
t = Tire(22) print 'a tire with radius', t.radius print 'has an area %.0f' % t.area() print 'and a perimeter %.0f' % t.perimeter() print # Customer 4: national trucking company print 'a hill with inclinometer reading 7 degrees' print 'is a percent grade: %.2f%%' % Circle.angle_to_grade(7) print # Customer 5: international graphics company # We have money and power! # We want the constructor to be based on the bounding box diagonal! c = Circle.from_bbd(10) print 'a circle with a bounding box diagonal 10' print 'has a radius %.2f' % c.radius print 'and an area %.2f' % c.area() print # Customer 6: the Feds # We like to micromanage: # we will tell you not just WHAT to do, but also HOW to do it # ISO-10666-fake # Thou shalt not create area methods that directly access the radius # Instead you must infer the radius from the perimeter # ISO-10667 # Circle classes must not store the radius