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#!/usr/bin/python
from copy import copy, deepcopy
from skdb.core.yamlcrap import *
from skdb import Unit, Vector, Process, load_package
import unittest
class Human:
'''a human is someone who might want to follow some instructions'''
def align(self, interface1, interface2):
return Step("align interface %s along the mating axis defined by interface %s" % (interface2.name, interface1.name))
def push(self, object=None, force=None, vector=None):
return Step("push %s with %s along %s" % (object.name, force, vector))
class Robot:
'''a robot is something that might want to follow some instructions'''
def align(self, interface1, interface2):
pass
class Step(FennObject, str):
yaml_tag="!step"
class Instructions(FennObject, list):
yaml_tag="!instructions"
class Fit(Process):
yaml_tag="!fit"
class Press(Fit):
'''!press *part1interface1 *part2interface34'''
yaml_tag="!press"
def __init__(self, option):
self.interface1 = option.interface1
self.interface2 = option.interface2
def options(self, interface1, interface2):
'''figures out press fit options between two given part interfaces'''
pass
def __repr__(self):
pass
def instructions(self, tool):
'''generate instructions for using this technique with a particular tool'''
#technically you should be able to use more than one tool
steps = Instructions() #it's essentially a list
step1 = tool.align(self.interface1, self.interface2) #with the tool "tool", align interface1 and interface2 (with their vectors)
steps.append(step1)
step2 = tool.push(object=self.interface1, force=Unit("10 N"), vector=Vector(0,1,0)) #normal_to(self.interface2)))
steps.append(step2)
return steps
class TestPressFitTechnique(unittest.TestCase):
def test_press(self):
lego_pack = load_package("lego")
lego_pack.load_data()
part1 = deepcopy(lego_pack.parts[0])
part2 = deepcopy(lego_pack.parts[0])
options = part1.options(part2)
option1 = options[1]
press = Press(option1) #is this a valid operation? this is determined by whether or not it is meaningful.
tool = Human()
#tool = Robot()
steps = press.instructions(tool)
print steps
if __name__ == "__main__":
unittest.main()
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