e2ecdcfe33
Former-commit-id:a02aeb236c[formerly9f19e3f712] [formerlya02aeb236c[formerly9f19e3f712] [formerly06a8b51d6d[formerly 64fa9254b946eae7e61bbc3f513b7c3696c4f54f]]] Former-commit-id:06a8b51d6dFormer-commit-id:8e80217e59[formerly3360eb6c5f] Former-commit-id:377dcd10b9
92 lines
No EOL
2.6 KiB
Python
92 lines
No EOL
2.6 KiB
Python
##
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# This software was developed and / or modified by Raytheon Company,
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# pursuant to Contract DG133W-05-CQ-1067 with the US Government.
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#
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# U.S. EXPORT CONTROLLED TECHNICAL DATA
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# This software product contains export-restricted data whose
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# export/transfer/disclosure is restricted by U.S. law. Dissemination
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# to non-U.S. persons whether in the United States or abroad requires
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# an export license or other authorization.
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#
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# Contractor Name: Raytheon Company
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# Contractor Address: 6825 Pine Street, Suite 340
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# Mail Stop B8
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# Omaha, NE 68106
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# 402.291.0100
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#
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# See the AWIPS II Master Rights File ("Master Rights File.pdf") for
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# further licensing information.
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##
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from Add import execute as Add
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from Vector import execute as Vector
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from numpy import array
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from numpy import dot
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def execute(*args):
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"""Rotate a vector
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Rotate vector by a number of degrees, or transform the vector with a matrix.
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The arguments after the vector need to be constants.
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"""
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if type(args[0]) != tuple:
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raise ValueError("first argument must be a vector")
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elif len(args) == 2:
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return rotateDegrees(args)
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else:
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return vectorTransformMatrix(args)
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def rotateDegrees(args):
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magnitude = args[0][0]
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direction = Add(args[0][1], args[1]) % 360
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return Vector(magnitude, direction, True)
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def vectorTransformMatrix(args):
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uComponent = args[0][2]
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vComponent = args[0][3]
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uComponentShape = uComponent.shape
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vComponentShape = vComponent.shape
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# in-place flatten the arrays
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uComponent.resize((uComponent.size,))
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vComponent.resize((vComponent.size,))
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vector = array([uComponent, vComponent])
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transform = array([[args[1], args[2]], [args[3], args[4]]],dtype=uComponent.dtype)
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(u,v) = dot(transform, vector)
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# resize the arrays back to appropriate size
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u.resize(uComponentShape)
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v.resize(vComponentShape)
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return Vector(u, v)
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def test():
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from numpy import all
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from numpy import array
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try:
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execute(1, 2, 3, 4);
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raise Exception
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except ValueError:
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pass
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(mag, dir, u, v) = execute((array([1., 2.]), array([90., 270.])), 180.)
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if not(all(mag == array([1., 2.])) and all(dir == array([270., 90.]))):
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raise Exception
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(mag, dir, u, v) = execute((None, None, array([1., 3.]), array([2., 4.])), 3., 4., 5., 6.)
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if not(all(u == array([11., 25.])) and all(v == array([17., 39.]))):
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raise Exception
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print "Rotate Test Complete"
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