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# 

# LSST Data Management System 

# Copyright 2018 LSST Corporation. 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <http://www.lsstcorp.org/LegalNotices/>. 

# 

import unittest 

 

import lsst.utils.tests 

import lsst.afw.geom as afwGeom 

from lsst.afw.image import ExposureF, ExposureInfo, Calib, VisitInfo 

from lsst.afw.geom.wcsUtils import makeDistortedTanWcs 

from lsst.afw.cameraGeom import FIELD_ANGLE, FOCAL_PLANE, PIXELS 

from lsst.afw.cameraGeom.testUtils import DetectorWrapper, CameraWrapper 

from lsst.afw.geom.utils import wcsAlmostEqualOverBBox 

from lsst.ip.isr import IsrTask 

import lsst.ip.isr.isrFunctions as isrFunctions 

 

 

class ApplyLookupTableTestCase(lsst.utils.tests.TestCase): 

"""Test IsrTask.addDistortionModel 

""" 

 

def setUp(self): 

self.camera = CameraWrapper().camera 

self.detector = DetectorWrapper().detector 

self.crpix = afwGeom.Point2D(50, 100) 

self.crval = afwGeom.SpherePoint(36, 71, afwGeom.degrees) 

scale = 1.0*afwGeom.arcseconds 

self.cdMatrix = afwGeom.makeCdMatrix(scale=scale) 

self.wcs = afwGeom.makeSkyWcs(crpix=self.crpix, crval=self.crval, cdMatrix=self.cdMatrix) 

self.bbox = afwGeom.Box2I(afwGeom.Point2I(-10, 10), afwGeom.Extent2I(1000, 1022)) 

self.exposure = ExposureF(self.bbox) 

 

# set the few items of ExposureInfo needed by IsrTask.run 

# when only adding a distortion model 

exposureInfo = ExposureInfo(calib=Calib(1.0), 

detector=self.detector, 

visitInfo=VisitInfo(exposureTime=1.0), 

wcs=self.wcs) 

 

self.exposure.setInfo(exposureInfo) 

 

def tearDown(self): 

self.detector = None 

self.exposure = None 

 

def testAddDistortionMethod(self): 

"""Call IsrTask.addDistortionModel directly""" 

isrFunctions.addDistortionModel(self.exposure, self.camera) 

self.assertFalse(wcsAlmostEqualOverBBox(self.wcs, self.exposure.getWcs(), self.bbox)) 

 

desiredWcs = self.makeDesiredDistortedWcs() 

self.assertWcsAlmostEqualOverBBox(desiredWcs, self.exposure.getWcs(), self.bbox) 

 

def makeMinimalIsrConfig(self): 

"""Return an IsrConfig with all boolean flags disabled""" 

isrConfig = IsrTask.ConfigClass() 

for name in isrConfig: 

if name.startswith("do"): 

setattr(isrConfig, name, False) 

return isrConfig 

 

def makeDesiredDistortedWcs(self): 

"""Make the expected distorted WCS""" 

pixelToFocalPlane = self.detector.getTransform(PIXELS, FOCAL_PLANE) 

focalPlaneToFieldAngle = self.camera.getTransformMap().getTransform(FOCAL_PLANE, FIELD_ANGLE) 

return makeDistortedTanWcs(self.wcs, pixelToFocalPlane, focalPlaneToFieldAngle) 

 

def testRunWithAddDistortionModel(self): 

"""Test IsrTask.run with config.doAddDistortionModel true""" 

isrConfig = self.makeMinimalIsrConfig() 

isrConfig.doAddDistortionModel = True 

isrTask = IsrTask(config=isrConfig) 

with self.assertRaises(RuntimeError): 

# the camera argument is required 

isrTask.run(ccdExposure=self.exposure) 

exposure = isrTask.run(ccdExposure=self.exposure, camera=self.camera).exposure 

desiredWcs = self.makeDesiredDistortedWcs() 

self.assertWcsAlmostEqualOverBBox(desiredWcs, exposure.getWcs(), self.bbox) 

 

def testRunWithoutAddDistortionModel(self): 

"""Test IsrTask.run with config.doAddDistortionModel false""" 

isrConfig = self.makeMinimalIsrConfig() 

isrTask = IsrTask(config=isrConfig) 

 

# the camera argument is not needed 

exposure = isrTask.run(ccdExposure=self.exposure).exposure 

self.assertEqual(self.wcs, exposure.getWcs()) 

 

# and the camera argument is ignored if provided 

exposure2 = isrTask.run(ccdExposure=self.exposure, camera=self.camera).exposure 

self.assertEqual(self.wcs, exposure2.getWcs()) 

 

 

class MemoryTester(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

119 ↛ 120line 119 didn't jump to line 120, because the condition on line 119 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()