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GenomeRegion.cpp
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Wed, May 1, 22:52

GenomeRegion.cpp
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#include <GenomeRegion.hpp>
#include <string>
#include <cmath> // abs()
#include <stdexcept> // std::invalid_argument
#include <seqan/bam_io.h>
/*
GenomeRegion GenomeRegion::constructRead(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{
GenomeRegion read ;
read.chromosome =
seqan::toCString(
seqan::getContigName(record, bam_file)) ;
read.chromosome_idx = record.rID ;
// read is on + strand
// |----------->
// record.beginPos
if(not seqan::hasFlagRC(record))
{ read.start = record.beginPos ;
read.length = seqan::endPosition(record.seq) ;
read.end = read.start + read.length ;
}
// read is on - strand
// <-----------|
// record.beginPos
else
{ read.length = seqan::endPosition(record.seq) ;
read.end = record.beginPos + 1 ;
read.start = read.end - read.length ;
}
if(read.start < 0 or read.end < 0)
{ char msg[4096] ;
sprintf(msg, "Error! invalide coordinate (<0) : [%s/%d %d %d)]",
read.chromosome.c_str(), read.chromosome_idx,
read.start, read.end) ;
throw std::invalid_argument(msg) ;
}
else if(read.start >= read.end)
{ char msg[4096] ;
sprintf(msg, "Error! start >= end : [%s/%d %d %d)]",
read.chromosome.c_str(), read.chromosome_idx,
read.start, read.end) ;
throw std::invalid_argument(msg) ;
}
return read ;
}
*/
// new
GenomeRegion GenomeRegion::constructRead(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{
GenomeRegion read ;
read.chromosome =
seqan::toCString(
seqan::getContigName(record, bam_file)) ;
read.chromosome_idx = record.rID ;
read.start = record.beginPos ;
read.length = seqan::endPosition(record.seq) ;
read.end = read.start + read.length ;
if(read.start < 0 or read.end < 0)
{ char msg[4096] ;
sprintf(msg, "Error! invalide coordinate (<0) : [%s/%d %d %d)]",
read.chromosome.c_str(), read.chromosome_idx,
read.start, read.end) ;
throw std::invalid_argument(msg) ;
}
else if(read.start >= read.end)
{ char msg[4096] ;
sprintf(msg, "Error! start >= end : [%s/%d %d %d)]",
read.chromosome.c_str(), read.chromosome_idx,
read.start, read.end) ;
throw std::invalid_argument(msg) ;
}
return read ;
}
/*
GenomeRegion GenomeRegion::constructReadATAC(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{ GenomeRegion read ;
read.chromosome =
seqan::toCString(
seqan::getContigName(record, bam_file)) ;
read.chromosome_idx = record.rID ;
// read is on + strand
if(not seqan::hasFlagRC(record))
{ read.start = record.beginPos + 4 ; }
// read is on - strand
else
{ read.start = record.beginPos - 5 ; }
read.end = read.start + 1 ;
read.length = 1 ;
return read ;
}
*/
// new
GenomeRegion GenomeRegion::constructReadATAC(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{ GenomeRegion read = GenomeRegion::constructRead(record, bam_file);
if(not seqan::hasFlagRC(record))
{ read.start += 4 ;
read.end = read.start + 1 ;
read.length = 1 ;
}
else
{ read.start = read.end - 1 - 5 ;
read.end = read.start + 1 ;
read.length = 1 ;
}
return read ;
}
GenomeRegion GenomeRegion::constructReadEdge(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{
GenomeRegion read = GenomeRegion::constructRead(record, bam_file);
if(not seqan::hasFlagRC(record))
{ read.end = read.start + 1 ;
read.length = 1 ;
}
else
{ read.start = read.end - 1 ;
read.length = 1 ;
}
return read ;
}
// old
/*
GenomeRegion GenomeRegion::constructFragment(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{ GenomeRegion frag ;
frag.chromosome =
seqan::toCString(
seqan::getContigName(record, bam_file)) ;
frag.chromosome_idx = record.rID ;
// read is on + strand
// record
// |-----> <-----|
// record.beginPos
if(not seqan::hasFlagRC(record))
{ frag.start = record.beginPos ;
frag.length = record.tLen ;
frag.end = frag.start + frag.length ;
}
// read is on - strand
// record
// |-----> <-----|
// record.beginPos
else
{ // frag.end = seqan::endPosition(record.seq) + 1 ;
// frag.length = abs(record.tLen) ;
// frag.start = frag.end - frag.length ;
frag.end = record.beginPos + 1 ;
frag.length = abs(record.tLen) ;
frag.start = frag.end - frag.length ;
}
if(frag.start < 0 or frag.end < 0)
{ char msg[4096] ;
sprintf(msg, "Error! invalide coordinate (<0) : [%s/%d %d %d)]",
frag.chromosome.c_str(), frag.chromosome_idx,
frag.start, frag.end) ;
throw std::invalid_argument(msg) ;
}
else if(frag.start >= frag.end)
{ char msg[4096] ;
sprintf(msg, "Error! start >= end : [%s/%d %d %d)]",
frag.chromosome.c_str(), frag.chromosome_idx,
frag.start, frag.end) ;
throw std::invalid_argument(msg) ;
}
return frag ;
}
*/
GenomeRegion GenomeRegion::constructFragment(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{ GenomeRegion frag ;
frag.chromosome =
seqan::toCString(
seqan::getContigName(record, bam_file)) ;
frag.chromosome_idx = record.rID ;
// read is on + strand
// record
// |-----> <-----|
if(not seqan::hasFlagRC(record))
{ frag.start = record.beginPos ;
frag.length = record.tLen ;
frag.end = frag.start + frag.length ;
}
// read is on - strand
// record
// |-----> <-----|
else
{ // frag.end = seqan::endPosition(record.seq) + 1 ;
// frag.length = abs(record.tLen) ;
// frag.start = frag.end - frag.length ;
frag.length = abs(record.tLen) ;
frag.start = record.pNext ;
frag.end = frag.start + frag.length ;
}
if(frag.start < 0 or frag.end < 0)
{ char msg[4096] ;
sprintf(msg, "Error! invalide coordinate (<0) : [%s/%d %d %d)]",
frag.chromosome.c_str(), frag.chromosome_idx,
frag.start, frag.end) ;
throw std::invalid_argument(msg) ;
}
else if(frag.start >= frag.end)
{ char msg[4096] ;
sprintf(msg, "Error! start >= end : [%s/%d %d %d)]",
frag.chromosome.c_str(), frag.chromosome_idx,
frag.start, frag.end) ;
throw std::invalid_argument(msg) ;
}
return frag ;
}
GenomeRegion GenomeRegion::constructFragmentCenter(const seqan::BamAlignmentRecord& record,
const seqan::BamFileIn& bam_file)
{ GenomeRegion frag = GenomeRegion::constructFragment(record, bam_file) ;
int mid = frag.start + (frag.length / 2) ;
frag.start = mid ;
frag.end = mid + 1;
frag.length = 1 ;
return frag ;
}
GenomeRegion::GenomeRegion(const GenomeRegion& other)
: chromosome(other.chromosome),
chromosome_idx(other.chromosome_idx),
start(other.start),
end(other.end),
length(other.length)
{}
GenomeRegion::GenomeRegion(const std::string& chromosome,
int chromosome_idx,
int start,
int end)
: chromosome(chromosome),
chromosome_idx(chromosome_idx),
start(start),
end(end),
length(end - start)
{ if(this->start < 0 or this->end < 0)
{ char msg[4096] ;
sprintf(msg, "Error! invalide coordinate (<0) : [%s/%d %d %d)]",
this->chromosome.c_str(), this->chromosome_idx,
this->start, this->end) ;
throw std::invalid_argument(msg) ;
}
else if(start >= end)
{ char msg[4096] ;
sprintf(msg, "Error! start >= end : [%s/%d %d %d)]",
this->chromosome.c_str(), this->chromosome_idx,
this->start, this->end) ;
throw std::invalid_argument(msg) ;
}
}
int GenomeRegion::overlap_len(const GenomeRegion& other) const
{ int len = 0 ;
if((*this) | other)
{ // this is contained in other or overlap perfectly other
if(this->start >= other.start and this->end <= other.end)
{ len = this->length ; }
// start of this overlaps end other
else if((other.start < this->start) and (other.end-1 >= this->start))
{ len = other.end - this->start ; }
// other contained in this (perect overlap is handled in first case)
else if(other.start >= this->start and other.end <= this->end)
{ len = other.length ; }
// end of this overlaps start of other (only case left)
else
{ len = this->end - other.start ; }
}
return len ;
}
GenomeRegion& GenomeRegion::operator = (const GenomeRegion& rhs)
{ if(this == &rhs)
{ return *this ; }
this->start = rhs.start ;
this->end = rhs.end ;
this->length = rhs.length ;
this->chromosome = rhs.chromosome ;
this->chromosome_idx = rhs.chromosome_idx ;
return *this ;
}
GenomeRegion& GenomeRegion::operator = (GenomeRegion&& rhs)
{ if(this == &rhs)
{ return *this ; }
this->start = rhs.start ;
this->end = rhs.end ;
this->length = rhs.length ;
this->chromosome = rhs.chromosome ;
this->chromosome_idx = rhs.chromosome_idx ;
return *this ;
}
bool GenomeRegion::operator == (const GenomeRegion& rhs) const
{ if(this == &rhs)
{ return true ; }
if(this->chromosome_idx == rhs.chromosome_idx and
this->start == rhs.start and
this->end == rhs.end and
this->length == rhs.length)
{ return true ; }
return false ;
}
bool GenomeRegion::operator | (const GenomeRegion& rhs) const
{
if((this->chromosome_idx != rhs.chromosome_idx) or // on diff chromosomes
(rhs.end-1 < this->start) or // rhs upstream this
(this->end-1 < rhs.start)) // rhs downstream this
{ return false ; }
return true ;
}
bool GenomeRegion::operator < (const GenomeRegion& rhs) const
{
if(this->chromosome_idx < rhs.chromosome_idx)
{ return true ; }
else if((this->chromosome_idx == rhs.chromosome_idx) and
(this->end-1 < rhs.start))
{ return true ; }
return false ;
}
bool GenomeRegion::operator > (const GenomeRegion& rhs) const
{ if(this->chromosome_idx > rhs.chromosome_idx)
{ return true ; }
if((this->chromosome_idx == rhs.chromosome_idx) and
(rhs.end-1 < this->start))
{ return true ; }
return false ;
}
std::ostream& operator << (std::ostream& stream, const GenomeRegion& region)
{ stream << "( "
<< region.chromosome << "/"
<< region.chromosome_idx << " "
<< region.start << " "
<< region.end << " "
<< region.length << " ) " ;
return stream ;
}

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