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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, makeFlippedWcs 

from lsst.afw.math import flipImage 

from lsst.geom import Point2D 

from lsst.obs.base.fitsRawFormatterBase import FitsRawFormatterBase 

from astro_metadata_translator import HscTranslator 

 

from ....hsc.hscFilters import HSC_FILTER_DEFINITIONS 

from . import HyperSuprimeCam 

 

__all__ = ("HyperSuprimeCamRawFormatter", "HyperSuprimeCamCornerRawFormatter") 

 

 

class HyperSuprimeCamRawFormatter(FitsRawFormatterBase): 

 

FLIP_LR = True 

FLIP_TB = False 

translatorClass = HscTranslator 

 

def getDetector(self, id): 

return HyperSuprimeCam().getCamera()[id] 

 

def _createSkyWcsFromMetadata(self): 

# We need to know which direction the chip is "flipped" in order to 

# make a sensible WCS from the header metadata. 

wcs = makeSkyWcs(self.metadata, strip=True) 

dimensions = bboxFromMetadata(self.metadata).getDimensions() 

center = Point2D(dimensions/2.0) 

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

 

def makeFilter(self): 

# 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 (self.observationInfo.physical_filter == d["name"] or 

self.observationInfo.physical_filter in d["alias"]): 

return Filter(d["name"], force=True) 

return Filter(self.observationInfo.physical_filter, force=True) 

 

def readImage(self): 

if self.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(self.fileDescriptor.location.path) 

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

 

 

class HyperSuprimeCamCornerRawFormatter(HyperSuprimeCamRawFormatter): 

 

FLIP_LR = False 

FLIP_TB = True