""" Defines a few simple comps that are used in tests."""
import numpy as np
import openmdao.api as om
[docs]
class DoubleArrayComp(om.ExplicitComponent):
"""
A fairly simple array component.
"""
[docs]
def __init__(self):
super().__init__()
self.JJ = np.array([[1.0, 3.0, -2.0, 7.0],
[6.0, 2.5, 2.0, 4.0],
[-1.0, 0.0, 8.0, 1.0],
[1.0, 4.0, -5.0, 6.0]])
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def setup(self):
# Params
self.add_input('x1', np.zeros([2]))
self.add_input('x2', np.zeros([2]))
# Unknowns
self.add_output('y1', np.zeros([2]))
self.add_output('y2', np.zeros([2]))
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def setup_partials(self):
# Derivs
self.declare_partials(of='*', wrt='*')
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def compute(self, inputs, outputs):
"""
Execution.
"""
outputs['y1'] = self.JJ[0:2, 0:2].dot(inputs['x1']) + \
self.JJ[0:2, 2:4].dot(inputs['x2'])
outputs['y2'] = self.JJ[2:4, 0:2].dot(inputs['x1']) + \
self.JJ[2:4, 2:4].dot(inputs['x2'])
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def compute_partials(self, inputs, partials):
"""
Analytical derivatives.
"""
partials[('y1', 'x1')] = self.JJ[0:2, 0:2]
partials[('y1', 'x2')] = self.JJ[0:2, 2:4]
partials[('y2', 'x1')] = self.JJ[2:4, 0:2]
partials[('y2', 'x2')] = self.JJ[2:4, 2:4]
[docs]
class NonSquareArrayComp(om.ExplicitComponent):
"""
A fairly simple array component.
"""
[docs]
def __init__(self):
super().__init__()
self.JJ = np.array([[1.0, 3.0, -2.0, 7.0],
[6.0, 2.5, 2.0, 4.0],
[-1.0, 0.0, 8.0, 1.0],
[1.0, 4.0, -5.0, 6.0]])
[docs]
def setup(self):
# Params
self.add_input('x1', np.zeros([2]))
self.add_input('x2', np.zeros([2]))
# Unknowns
self.add_output('y1', np.zeros([3]))
self.add_output('y2', np.zeros([1]))
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def setup_partials(self):
# Derivs
self.declare_partials(of='*', wrt='*')
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def compute(self, inputs, outputs):
"""
Execution.
"""
outputs['y1'] = self.JJ[0:3, 0:2].dot(inputs['x1']) + \
self.JJ[0:3, 2:4].dot(inputs['x2'])
outputs['y2'] = self.JJ[3:4, 0:2].dot(inputs['x1']) + \
self.JJ[3:4, 2:4].dot(inputs['x2'])
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def compute_partials(self, inputs, partials):
"""
Analytical derivatives.
"""
partials[('y1', 'x1')] = self.JJ[0:3, 0:2]
partials[('y1', 'x2')] = self.JJ[0:3, 2:4]
partials[('y2', 'x1')] = self.JJ[3:4, 0:2]
partials[('y2', 'x2')] = self.JJ[3:4, 2:4]
