Coverage for tests/test_setValidPolygonIntersect.py: 31%
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1#
2# LSST Data Management System
3# Copyright 2008-2015 AURA/LSST.
4#
5# This product includes software developed by the
6# LSST Project (http://www.lsst.org/).
7#
8# This program is free software: you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation, either version 3 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the LSST License Statement and
19# the GNU General Public License along with this program. If not,
20# see <https://www.lsstcorp.org/LegalNotices/>.
21#
23"""
24Tests setting of valid focal plane polygon intersection with ccd corners
26Run with:
27 python testSetValidPolygonIntersect.py
28or
29 python
30 >>> import testSetValidPolygonIntersect; testSetValidPolygonIntersect.run()
31"""
33import unittest
35import numpy as np
37import lsst.utils.tests
38import lsst.geom
39import lsst.afw.geom as afwGeom
40import lsst.afw.image as afwImage
41from lsst.ip.isr.vignette import setValidPolygonCcdIntersect
42from lsst.afw.cameraGeom.testUtils import DetectorWrapper
43from lsst.afw.cameraGeom import PIXELS, FOCAL_PLANE
46def makeCircularPolygon(fpCenterX, fpCenterY, fpRadius, numPolygonPoints):
47 theta = np.linspace(0, 2*np.pi, num=numPolygonPoints, endpoint=False)
48 xx = fpRadius*np.cos(theta) + fpCenterX
49 yy = fpRadius*np.sin(theta) + fpCenterY
50 points = np.array([xx, yy]).transpose()
51 polygon = afwGeom.Polygon([lsst.geom.Point2D(x, y) for x, y in reversed(points)])
52 return polygon
55def makeSquarePolygon(fpX0, fpY0, fpSize):
56 xx = [fpX0, fpX0, fpX0 + fpSize - 1, fpX0 + fpSize - 1, fpX0]
57 yy = [fpY0, fpY0 + fpSize - 1, fpY0 + fpSize - 1, fpY0, fpY0]
58 points = np.array([xx, yy]).transpose()
59 polygon = afwGeom.Polygon([lsst.geom.Point2D(x, y) for x, y in points])
60 return polygon
63class SetValidPolygonIntersectTestCase(lsst.utils.tests.TestCase):
64 """A test case for setting of valid focal plane polygon intersection with ccd corners """
66 def testSetPolygonIntersect(self):
67 # Create a detector
68 detector = DetectorWrapper().detector
69 numPolygonPoints = 50
70 # Create an exposure with bounding box defined by detector
71 exposure = afwImage.ExposureF(detector.getBBox())
72 exposure.setDetector(detector)
74 pixelSizeMm = exposure.getDetector().getPixelSize()[0]
76 pixX0 = exposure.getX0()
77 pixY0 = exposure.getY0()
78 pixX1 = pixX0 + exposure.getWidth() - 1
79 pixY1 = pixY0 + exposure.getHeight() - 1
81 fpCenter = exposure.getDetector().getCenter(FOCAL_PLANE)
82 fpCenterX = fpCenter[0]
83 fpCenterY = fpCenter[1]
84 pixCenter = exposure.getDetector().getCenter(PIXELS)
86 # Make a polygon that encompases entire ccd (radius of 2*max of width/height)
87 fpRadius = 2.0*max(exposure.getWidth()*pixelSizeMm, exposure.getHeight()*pixelSizeMm)
88 fpPolygon = makeCircularPolygon(fpCenterX, fpCenterY, fpRadius, numPolygonPoints)
89 # Set the polygon that is the intersection of fpPolygon and ccd
90 setValidPolygonCcdIntersect(exposure, fpPolygon)
91 # Since the ccd is fully contained in the fpPolygon, the intersection should be the ccdPolygon itself
92 ccdPolygonPix = afwGeom.Polygon(exposure.getDetector().getCorners(PIXELS))
93 self.assertEqual(exposure.getInfo().getValidPolygon(), ccdPolygonPix)
95 # Make a polygon that is entirely within, but smaller than, the ccd
96 # (radius of 0.2*min of width/height)
97 fpRadius = 0.2*min(exposure.getWidth()*pixelSizeMm, exposure.getHeight()*pixelSizeMm)
98 fpPolygon = makeCircularPolygon(fpCenterX, fpCenterY, fpRadius, numPolygonPoints)
99 # Set the polygon that is the intersection of fpPolygon and ccd
100 setValidPolygonCcdIntersect(exposure, fpPolygon)
101 # all vertices of polygon should be contained within the ccd
102 for x in exposure.getInfo().getValidPolygon():
103 self.assertTrue(ccdPolygonPix.contains(lsst.geom.Point2D(x)))
104 # intersection is smaller than the ccd
105 self.assertNotEqual(exposure.getInfo().getValidPolygon(), ccdPolygonPix)
107 # make a simple square polygon that partly intersects the ccd, centered at ccd center
108 fpPolygonSize = max(exposure.getWidth()*pixelSizeMm, exposure.getHeight()*pixelSizeMm)
109 fpPolygon = makeSquarePolygon(fpCenterX, fpCenterY, fpPolygonSize)
110 setValidPolygonCcdIntersect(exposure, fpPolygon)
111 # Check that the polygon contains the central pixel (offset by one to actually be "contained")
112 pixCenterPlusOne = lsst.geom.Point2D(pixCenter[0] + 1, pixCenter[1] + 1)
113 self.assertTrue(exposure.getInfo().getValidPolygon().contains(lsst.geom.Point2D(pixCenterPlusOne)))
114 # Check that the polygon contains the upper right ccd edge
115 self.assertTrue(exposure.getInfo().getValidPolygon().contains(lsst.geom.Point2D(pixX1, pixY1)))
118class MemoryTester(lsst.utils.tests.MemoryTestCase):
119 pass
122def setup_module(module):
123 lsst.utils.tests.init()
126if __name__ == "__main__": 126 ↛ 127line 126 didn't jump to line 127, because the condition on line 126 was never true
127 lsst.utils.tests.init()
128 unittest.main()