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# This file is part of obs_subaru. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (http://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# 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 GNU General Public License 

# along with this program. If not, see <http://www.gnu.org/licenses/>. 

 

"""Gen3 Butler Formatters for HSC raw data. 

""" 

 

from lsst.afw.image import ImageU, bboxFromMetadata, Filter 

from lsst.afw.geom import makeSkyWcs, Point2D, makeFlippedWcs 

from lsst.afw.math import flipImage 

from lsst.daf.butler.formatters.fitsRawFormatterBase import FitsRawFormatterBase 

from astro_metadata_translator import HscTranslator, ObservationInfo 

 

from ....hsc.makeHscRawVisitInfo import MakeHscRawVisitInfo 

from ....hsc.hscFilters import HSC_FILTER_DEFINITIONS 

 

__all__ = ("HyperSuprimeCamRawFormatter", "HyperSuprimeCamCornerRawFormatter") 

 

 

class HyperSuprimeCamRawFormatter(FitsRawFormatterBase): 

 

FLIP_LR = True 

FLIP_TB = False 

 

def makeVisitInfo(self, metadata): 

maker = MakeHscRawVisitInfo() 

return maker(metadata) 

 

def makeWcs(self, metadata): 

wcs = makeSkyWcs(metadata, strip=True) 

dimensions = bboxFromMetadata(metadata).getDimensions() 

center = Point2D(dimensions/2.0) 

return makeFlippedWcs(wcs, self.FLIP_LR, self.FLIP_TB, center) 

 

def makeFilter(self, metadata): 

obsInfo = ObservationInfo(metadata, translator_class=HscTranslator) 

# For historical reasons we need to return a short, lowercase filter 

# name that is neither a physical_filter nor an abstract_filter in Gen3 

# or a filter data ID value in Gen2. 

# We'll suck that out of the definitions used to construct filters 

# for HSC in Gen2. This should all get cleaned up in RFC-541. 

for d in HSC_FILTER_DEFINITIONS: 

if obsInfo.physical_filter == d["name"] or obsInfo.physical_filter in d["alias"]: 

return Filter(d["name"], force=True) 

return Filter(obsInfo.physical_filter, force=True) 

 

def readImage(self, fileDescriptor): 

if fileDescriptor.parameters: 

# It looks like the Gen2 std_raw code wouldn't have handled 

# flipping vs. subimages correctly, so we won't bother to either. 

# But we'll make sure no one tries to get a subimage, rather than 

# doing something confusing. 

raise NotImplementedError("Formatter does not support subimages.") 

image = ImageU(fileDescriptor.location.path) 

return flipImage(image, self.FLIP_LR, self.FLIP_TB) 

 

 

class HyperSuprimeCamCornerRawFormatter(HyperSuprimeCamRawFormatter): 

 

FLIP_LR = False 

FLIP_TB = True