/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * Copyright (C) 2005 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: geom/IntersectionMatrix.java rev. 1.18
 *
 **********************************************************************/

#include <geos/geom/IntersectionMatrix.h>
#include <geos/geom/Dimension.h>
#include <geos/geom/Location.h>
#include <geos/util/IllegalArgumentException.h>

#include <sstream>
#include <cassert>

using namespace std;

namespace geos {
namespace geom { // geos::geom

const int IntersectionMatrix::firstDim = 3;
const int IntersectionMatrix::secondDim = 3;
	
/*public*/
IntersectionMatrix::IntersectionMatrix()
{
	//matrix = new int[3][3];
	setAll(Dimension::False);
}

/*public*/
IntersectionMatrix::IntersectionMatrix(const string& elements)
{
	setAll(Dimension::False);
	set(elements);
}

/*public*/
IntersectionMatrix::IntersectionMatrix(const IntersectionMatrix& other)
{
	matrix[Location::INTERIOR][Location::INTERIOR] = other.matrix[Location::INTERIOR][Location::INTERIOR];
	matrix[Location::INTERIOR][Location::BOUNDARY] = other.matrix[Location::INTERIOR][Location::BOUNDARY];
	matrix[Location::INTERIOR][Location::EXTERIOR] = other.matrix[Location::INTERIOR][Location::EXTERIOR];
	matrix[Location::BOUNDARY][Location::INTERIOR] = other.matrix[Location::BOUNDARY][Location::INTERIOR];
	matrix[Location::BOUNDARY][Location::BOUNDARY] = other.matrix[Location::BOUNDARY][Location::BOUNDARY];
	matrix[Location::BOUNDARY][Location::EXTERIOR] = other.matrix[Location::BOUNDARY][Location::EXTERIOR];
	matrix[Location::EXTERIOR][Location::INTERIOR] = other.matrix[Location::EXTERIOR][Location::INTERIOR];
	matrix[Location::EXTERIOR][Location::BOUNDARY] = other.matrix[Location::EXTERIOR][Location::BOUNDARY];
	matrix[Location::EXTERIOR][Location::EXTERIOR] = other.matrix[Location::EXTERIOR][Location::EXTERIOR];
}

/*public*/
void
IntersectionMatrix::add(IntersectionMatrix* other)
{
	for(int i = 0; i < firstDim; i++) {
		for(int j = 0; j < secondDim; j++) {
			setAtLeast(i, j, other->get(i, j));
		}
	}
}

/*public*/
bool
IntersectionMatrix::matches(const string& requiredDimensionSymbols) const
{
	if (requiredDimensionSymbols.length() != 9) {
		ostringstream s;
		s << "IllegalArgumentException: Should be length 9, is "
				<< "[" << requiredDimensionSymbols << "] instead" << endl;
		throw util::IllegalArgumentException(s.str());
	}
	for (int ai = 0; ai < firstDim; ai++) {
		for (int bi = 0; bi < secondDim; bi++) {
			if (!matches(matrix[ai][bi],requiredDimensionSymbols[3*ai+bi])) {
				return false;
			}
		}
	}
	return true;
}

/*public static*/
bool
IntersectionMatrix::matches(int actualDimensionValue,
	char requiredDimensionSymbol)
{

	if (requiredDimensionSymbol=='*') return true;

	if (requiredDimensionSymbol=='T' && (actualDimensionValue >= 0 ||
		actualDimensionValue==Dimension::True))
	{
		return true;
	}

	if (requiredDimensionSymbol=='F' &&
		actualDimensionValue==Dimension::False)
	{
		return true;
	}

	if (requiredDimensionSymbol=='0' &&
		actualDimensionValue==Dimension::P)
	{
		return true;
	}

	if (requiredDimensionSymbol=='1' &&
		actualDimensionValue==Dimension::L)
	{
		return true;
	}

	if (requiredDimensionSymbol=='2' &&
		actualDimensionValue==Dimension::A)
	{
		return true;
	}

	return false;
}

/*public static*/
bool
IntersectionMatrix::matches(const string& actualDimensionSymbols,
	const string& requiredDimensionSymbols)
{
	IntersectionMatrix m(actualDimensionSymbols);
	bool result=m.matches(requiredDimensionSymbols);
	
	return result;
}

/*public*/
void
IntersectionMatrix::set(int row, int col, int dimensionValue)
{
	assert( row >= 0 && row < firstDim );
	assert( col >= 0 && col < secondDim );
		
	matrix[row][col] = dimensionValue;
}

/*public*/
void
IntersectionMatrix::set(const string& dimensionSymbols)
{
	size_t limit = dimensionSymbols.length();

	for (size_t i = 0; i < limit; i++)
	{
		int row = i / firstDim;
		int col = i % secondDim;
		matrix[row][col] = Dimension::toDimensionValue(dimensionSymbols[i]);
	}
}

/*public*/
void
IntersectionMatrix::setAtLeast(int row, int col, int minimumDimensionValue)
{
	assert( row >= 0 && row < firstDim );
	assert( col >= 0 && col < secondDim );
	
	if (matrix[row][col] < minimumDimensionValue)
	{
		matrix[row][col] = minimumDimensionValue;
	}
}

/*public*/
void
IntersectionMatrix::setAtLeastIfValid(int row, int col, int minimumDimensionValue)
{
	assert( row >= 0 && row < firstDim );
	assert( col >= 0 && col < secondDim );
	
	if (row >= 0 && col >= 0)
	{
		setAtLeast(row, col, minimumDimensionValue);
	}
}

/*public*/
void
IntersectionMatrix::setAtLeast(string minimumDimensionSymbols)
{
	size_t limit = minimumDimensionSymbols.length();

	for (size_t i = 0; i < limit; i++)
	{
		int row = i / firstDim;
		int col = i % secondDim;
		setAtLeast(row, col, Dimension::toDimensionValue(minimumDimensionSymbols[i]));
	}
}

/*public*/
void
IntersectionMatrix::setAll(int dimensionValue)
{
	for (int ai = 0; ai < firstDim; ai++) {
		for (int bi = 0; bi < secondDim; bi++) {
			matrix[ai][bi] = dimensionValue;
		}
	}
}

/*public*/
int
IntersectionMatrix::get(int row, int col) const
{
	assert( row >= 0 && row < firstDim );
	assert( col >= 0 && col < secondDim );
	
	return matrix[row][col];
}

/*public*/
bool
IntersectionMatrix::isDisjoint() const
{
	return
		matrix[Location::INTERIOR][Location::INTERIOR]==Dimension::False
		&&
		matrix[Location::INTERIOR][Location::BOUNDARY]==Dimension::False
		&&
		matrix[Location::BOUNDARY][Location::INTERIOR]==Dimension::False
		&&
		matrix[Location::BOUNDARY][Location::BOUNDARY]==Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isIntersects() const
{
	return !isDisjoint();
}

/*public*/
bool
IntersectionMatrix::isTouches(int dimensionOfGeometryA,
		int dimensionOfGeometryB) const
{
	if (dimensionOfGeometryA > dimensionOfGeometryB)
	{
		//no need to get transpose because pattern matrix is symmetrical
		return isTouches(dimensionOfGeometryB, dimensionOfGeometryA);
	}
	if ((dimensionOfGeometryA==Dimension::A && dimensionOfGeometryB==Dimension::A)
		||
		(dimensionOfGeometryA==Dimension::L && dimensionOfGeometryB==Dimension::L)
		||
		(dimensionOfGeometryA==Dimension::L && dimensionOfGeometryB==Dimension::A)
		||
		(dimensionOfGeometryA==Dimension::P && dimensionOfGeometryB==Dimension::A)
		||
		(dimensionOfGeometryA==Dimension::P && dimensionOfGeometryB==Dimension::L))
	{
		return matrix[Location::INTERIOR][Location::INTERIOR]==Dimension::False &&
			  (matches(matrix[Location::INTERIOR][Location::BOUNDARY], 'T') ||
			   matches(matrix[Location::BOUNDARY][Location::INTERIOR], 'T') ||
			   matches(matrix[Location::BOUNDARY][Location::BOUNDARY], 'T'));
	}
	return false;
}

/*public*/
bool
IntersectionMatrix::isCrosses(int dimensionOfGeometryA,
		int dimensionOfGeometryB) const
{
	if ((dimensionOfGeometryA==Dimension::P && dimensionOfGeometryB==Dimension::L) ||
		(dimensionOfGeometryA==Dimension::P && dimensionOfGeometryB==Dimension::A) ||
		(dimensionOfGeometryA==Dimension::L && dimensionOfGeometryB==Dimension::A)) {
		return matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T') &&
			   matches(matrix[Location::INTERIOR][Location::EXTERIOR], 'T');
	}
	if ((dimensionOfGeometryA==Dimension::L && dimensionOfGeometryB==Dimension::P) ||
		(dimensionOfGeometryA==Dimension::A && dimensionOfGeometryB==Dimension::P) ||
		(dimensionOfGeometryA==Dimension::A && dimensionOfGeometryB==Dimension::L)) {
		return matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T') &&
			   matches(matrix[Location::EXTERIOR][Location::INTERIOR], 'T');
	}
	if (dimensionOfGeometryA==Dimension::L && dimensionOfGeometryB==Dimension::L) {
		return matrix[Location::INTERIOR][Location::INTERIOR]==0;
	}
	return false;
}

/*public*/
bool
IntersectionMatrix::isWithin() const
{
	return matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T') &&
		   matrix[Location::INTERIOR][Location::EXTERIOR]==Dimension::False &&
		   matrix[Location::BOUNDARY][Location::EXTERIOR]==Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isContains() const
{
	return matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T') &&
		   matrix[Location::EXTERIOR][Location::INTERIOR]==Dimension::False &&
		   matrix[Location::EXTERIOR][Location::BOUNDARY]==Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isEquals(int dimensionOfGeometryA,
		int dimensionOfGeometryB) const
{
	if (dimensionOfGeometryA != dimensionOfGeometryB) {
		return false;
	}
	return matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T') &&
		   matrix[Location::EXTERIOR][Location::INTERIOR]==Dimension::False &&
		   matrix[Location::INTERIOR][Location::EXTERIOR]==Dimension::False &&
		   matrix[Location::EXTERIOR][Location::BOUNDARY]==Dimension::False &&
		   matrix[Location::BOUNDARY][Location::EXTERIOR]==Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isOverlaps(int dimensionOfGeometryA,
		int dimensionOfGeometryB) const
{
	if ((dimensionOfGeometryA==Dimension::P && dimensionOfGeometryB==Dimension::P) ||
		(dimensionOfGeometryA==Dimension::A && dimensionOfGeometryB==Dimension::A)) {
		return matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T') &&
			   matches(matrix[Location::INTERIOR][Location::EXTERIOR], 'T') &&
			   matches(matrix[Location::EXTERIOR][Location::INTERIOR],'T');
	}
	if (dimensionOfGeometryA==Dimension::L && dimensionOfGeometryB==Dimension::L) {
		return matrix[Location::INTERIOR][Location::INTERIOR]==1 &&
			   matches(matrix[Location::INTERIOR][Location::EXTERIOR], 'T') &&
			   matches(matrix[Location::EXTERIOR][Location::INTERIOR], 'T');
	}
	return false;
}

/*public*/
bool
IntersectionMatrix::isCovers() const
{
	bool hasPointInCommon =
		matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T')
		||
		matches(matrix[Location::INTERIOR][Location::BOUNDARY], 'T')
		||
		matches(matrix[Location::BOUNDARY][Location::INTERIOR], 'T')
		||
		matches(matrix[Location::BOUNDARY][Location::BOUNDARY], 'T');

	return hasPointInCommon
		&&
		matrix[Location::EXTERIOR][Location::INTERIOR] ==
			Dimension::False
		&&
		matrix[Location::EXTERIOR][Location::BOUNDARY] ==
			Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isCoveredBy() const
{
	bool hasPointInCommon =
		matches(matrix[Location::INTERIOR][Location::INTERIOR], 'T')
		||
		matches(matrix[Location::INTERIOR][Location::BOUNDARY], 'T')
		||
		matches(matrix[Location::BOUNDARY][Location::INTERIOR], 'T')
		||
		matches(matrix[Location::BOUNDARY][Location::BOUNDARY], 'T');

	return
		hasPointInCommon
		&&
		matrix[Location::INTERIOR][Location::EXTERIOR] ==
			Dimension::False
		&&
		matrix[Location::BOUNDARY][Location::EXTERIOR] ==
			Dimension::False;
}

//Not sure
IntersectionMatrix*
IntersectionMatrix::transpose()
{		
	int temp = matrix[1][0];
	matrix[1][0] = matrix[0][1];
	matrix[0][1] = temp;
	temp = matrix[2][0];
	matrix[2][0] = matrix[0][2];
	matrix[0][2] = temp;
	temp = matrix[2][1];
	matrix[2][1] = matrix[1][2];
	matrix[1][2] = temp;
	return this;
}

/*public*/
string
IntersectionMatrix::toString() const
{
	string result("");
	for (int ai = 0; ai < firstDim; ai++) {
		for (int bi = 0; bi < secondDim; bi++) {
			result += Dimension::toDimensionSymbol(matrix[ai][bi]);
		}
	}
	return result;
}

std::ostream&
operator<< (std::ostream&os, const IntersectionMatrix& im)
{
	return os << im.toString();
}

} // namespace geos::geom
} // namespace geos