src/types.cpp

/*
 *  LDForge: LDraw parts authoring CAD
 *  Copyright (C) 2013 Santeri Piippo
 *
 *  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/>.
 */

#include <QObject>
#include <QStringList>
#include <QTextStream>
#include <qfile.h>
#include <assert.h>
#include "common.h"
#include "types.h"
#include "misc.h"

const File nullfile;

str DoFormat( vector<StringFormatArg> args )
{
	assert( args.size() >= 1 );
	str text = args[0].value();
	
	for( uchar i = 1; i < args.size(); ++i )
		text = text.arg( args[i].value() );
	
	return text;
}

vertex::vertex( double x, double y, double z )
{
	m_coords[X] = x;
	m_coords[Y] = y;
	m_coords[Z] = z;
}

// =============================================================================
void vertex::move( const vertex& other )
{
	for( const Axis ax : g_Axes )
		m_coords[ax] += other[ax];
}

// =============================================================================
vertex vertex::midpoint( const vertex& other )
{
	vertex mid;
	
	for( const Axis ax : g_Axes )
		mid[ax] = ( m_coords[ax] + other[ax] ) / 2;
	
	return mid;
}

// =============================================================================
str vertex::stringRep( bool mangled ) const
{
	str fmtstr = "%1 %2 %3";
	if( mangled )
		fmtstr = "(%1, %2, %3)";
	
	return fmt( fmtstr, coord( X ), coord( Y ), coord( Z ));
}

// =============================================================================
void vertex::transform( matrix matr, vertex pos )
{
	double x2 = ( matr[0] * x()) + ( matr[1] * y()) + ( matr[2] * z()) + pos[X];
	double y2 = ( matr[3] * x()) + ( matr[4] * y()) + ( matr[5] * z()) + pos[Y];
	double z2 = ( matr[6] * x()) + ( matr[7] * y()) + ( matr[8] * z()) + pos[Z];
	
	x() = x2;
	y() = y2;
	z() = z2;
}

vertex vertex::operator-() const
{
	return vertex( -m_coords[X], -m_coords[Y], -m_coords[Z] );
}

bool vertex::operator!= ( const vertex& other ) const
{
	return !operator== ( other );
}

double& vertex::operator[]( const Axis ax )
{
	return coord( ( ushort ) ax );
}

const double& vertex::operator[]( const Axis ax ) const
{
	return coord( ( ushort ) ax );
}

double& vertex::operator[]( const int ax )
{
	return coord( ax );
}

const double& vertex::operator[]( const int ax ) const
{
	return coord( ax );
}

bool vertex::operator== ( const vertex& other ) const
{
	return coord( X ) == other[X] &&
	       coord( Y ) == other[Y] &&
	       coord( Z ) == other[Z];
}

vertex& vertex::operator/= ( const double d )
{
	for( const Axis ax : g_Axes )
		m_coords[ax] /= d;
	
	return *this;
}

vertex vertex::operator/ ( const double d ) const
{
	vertex other( *this );
	return other /= d;
}

vertex& vertex::operator+= ( const vertex& other )
{
	move( other );
	return *this;
}

vertex vertex::operator+ ( const vertex& other ) const
{
	vertex newvert( *this );
	newvert.move( other );
	return newvert;
}

int vertex::operator< ( const vertex& other ) const
{
	if( operator==( other ))
		return false;
	
	if( coord( X ) < other[X] )
		return true;
	
	if( coord( X ) > other[X] )
		return false;
	
	if( coord( Y ) < other[Y] )
		return true;
	
	if( coord( Y ) > other[Y] )
		return false;
	
	return coord( Z ) < other[Z];
}

// =============================================================================
matrix::matrix( double vals[] )
{
	for( short i = 0; i < 9; ++i )
		m_vals[i] = vals[i];
}

matrix::matrix( double fillval )
{
	for( short i = 0; i < 9; ++i )
		m_vals[i] = fillval;
}

matrix::matrix( initlist<double> vals )
{
	assert( vals.size() == 9 );
	memcpy( &m_vals[0], &( *vals.begin() ), sizeof m_vals );
}

void matrix::puts() const
{
	for( short i = 0; i < 3; ++i )
	{
		for( short j = 0; j < 3; ++j )
			print( "%1\t", m_vals[( i * 3 ) + j] );
		
		print( "\n" );
	}
}

// =============================================================================
str matrix::stringRep() const
{
	str val;
	
	for( short i = 0; i < 9; ++i )
	{
		if( i > 0 )
			val += ' ';
		
		val += ftoa( m_vals[i] );
	}
	
	return val;
}

// =============================================================================
void matrix::zero()
{
	memset( &m_vals[0], 0, sizeof( double ) * 9 );
}

// =============================================================================
matrix matrix::mult( matrix other ) const
{
	matrix val;
	val.zero();
	
	for( short i = 0; i < 3; ++i )
	for( short j = 0; j < 3; ++j )
	for( short k = 0; k < 3; ++k )
		val[( i * 3 ) + j] += m_vals[( i * 3 ) + k] * other[( k * 3 ) + j];

	return val;
}

// =============================================================================
matrix& matrix::operator= ( matrix other )
{
	memcpy( &m_vals[0], &other.m_vals[0], sizeof( double ) * 9 );
	return *this;
}

// =============================================================================
double matrix::determinant() const
{
	return ( val( 0 ) * val( 4 ) * val( 8 )) +
	       ( val( 1 ) * val( 5 ) * val( 6 )) +
	       ( val( 2 ) * val( 3 ) * val( 7 )) -
	       ( val( 2 ) * val( 4 ) * val( 6 )) -
	       ( val( 1 ) * val( 3 ) * val( 8 )) -
	       ( val( 0 ) * val( 5 ) * val( 7 ));
}

// =============================================================================
StringFormatArg::StringFormatArg( const str& v )
{
	m_val = v;
}

StringFormatArg::StringFormatArg( const char& v )
{
	m_val = v;
}

StringFormatArg::StringFormatArg( const uchar& v )
{
	m_val = v;
}

StringFormatArg::StringFormatArg( const qchar& v )
{
	m_val = v;
}

StringFormatArg::StringFormatArg( const float& v )
{
	m_val = ftoa( v );
}

StringFormatArg::StringFormatArg( const double& v )
{
	m_val = ftoa( v );
}

StringFormatArg::StringFormatArg( const vertex& v )
{
	m_val = v.stringRep( false );
}

StringFormatArg::StringFormatArg( const matrix& v )
{
	m_val = v.stringRep();
}

StringFormatArg::StringFormatArg( const char* v )
{
	m_val = v;
}

StringFormatArg::StringFormatArg( const strconfig& v )
{
	m_val = v.value;
}

StringFormatArg::StringFormatArg( const intconfig& v )
{
	m_val.number( v.value );
}

StringFormatArg::StringFormatArg( const floatconfig& v )
{
	m_val.number( v.value );
}

StringFormatArg::StringFormatArg( const void* v )
{
	m_val.sprintf( "%p", v );
}

// =============================================================================
File::File()
{
	// Make a null file
	m_file = null;
	m_textstream = null;
}

File::File( str path, OpenType rtype )
{
	m_file = null;
	open( path, rtype );
}

File::File( FILE* fp, OpenType rtype )
{
	m_file = null;
	open( fp, rtype );
}

File::~File()
{
	if( m_file )
	{
		m_file->close();
		delete m_file;
		
		if( m_textstream )
			delete m_textstream;
	}
}

bool File::open( FILE* fp, OpenType rtype )
{
	return open( "", rtype, fp );
}

bool File::open( str path, OpenType rtype, FILE* fp )
{
	close();
	
	if( !m_file )
		m_file = new QFile;
	
	m_file->setFileName( path );
	
	bool result;
	
	QIODevice::OpenMode mode =
		( rtype == Read ) ? QIODevice::ReadOnly :
		( rtype == Write ) ? QIODevice::WriteOnly : QIODevice::Append;
	
	if( fp )
		result = m_file->open( fp, mode );
	else
		result = m_file->open( mode );
	
	if( result )
	{
		m_textstream = new QTextStream( m_file );
		return true;
	}
	
	delete m_file;
	m_file = null;
	return false;
}

File::iterator File::begin()
{
	return iterator( this );
}

File::iterator& File::end()
{
	return m_endIterator;
}

void File::write( str msg )
{
	m_file->write( msg.toUtf8(), msg.length() );
}

bool File::readLine( str& line )
{
	if( !m_textstream || m_textstream->atEnd() )
		return false;
	
	line = m_textstream->readLine();
	return true;
}

bool File::atEnd() const
{
	if( !m_textstream )
		fatal( "cannot use atEnd on a null file" );
	
	return m_textstream->atEnd();
}

bool File::isNull() const
{
	return m_file == null;
}

bool File::operator!() const
{
	return isNull();
}

void File::close()
{
	if( !m_file )
		return;
	
	delete m_file;
	m_file = null;
	
	if( m_textstream )
	{
		delete m_textstream;
		m_textstream = null;
	}
}

bool File::flush()
{
	return m_file->flush();
}

File::operator bool () const
{
	return !isNull();
}

void File::rewind()
{
	m_file->seek( 0 );
}

File::iterator::iterator( File* f ) : m_file( f )
{
	operator++ ();
}

void File::iterator::operator++ ()
{
	m_gotdata = m_file->readLine( m_text );
}

str File::iterator::operator* ()
{
	return m_text;
}

// The prime contestant for the weirdest operator== 2013 award?
bool File::iterator::operator== ( File::iterator& other )
{
	return ( other.m_file == null && !m_gotdata );
}

bool File::iterator::operator!= ( File::iterator& other )
{
	return !operator== ( other );
}