Matrix.cpp

#include "Matrix.h"

Matrix::Matrix(void)
{
	for(int x = 0; x < 4; x++)
		for(int y = 0; y < 4; y++) {
			if(x == y)
				m[x][y] = 1.0;
			else
				m[x][y] = 0.0;
		}
}

Matrix::Matrix(const Matrix& mat) {
	for(int x = 0; x < 4; x++)
		for(int y = 0; y < 4; y++)
			m[x][y] = mat.m[x][y];
}

Matrix::~Matrix(void) {}

Matrix& Matrix::operator= (const Matrix& rhs) {
	if(this == &rhs)
		return (*this);

	for(int x = 0; x < 4; x++)
		for(int y = 0; y < 4; y++)
			m[x][y] = rhs.m[x][y];

	return (*this);
}

Matrix Matrix::operator* (const Matrix& mat) const {
	Matrix product;

	for(int y = 0; y < 4; y++)
		for(int x = 0; x < 4; x++) {
			double sum = 0.0;

			for(int j = 0; j < 4; j++)
				sum += m[x][j] * mat.m[j][y];

			product.m[x][y] = sum;
		}

	return (product);
}

Matrix Matrix::operator/ (const double d) {
	for(int x = 0; x < 4; x++)
		for(int y = 0; y < 4; y++)
			m[x][y] = m[x][y] / d;

	return (*this);
}

void Matrix::set_identity(void) {
	for(int x = 0; x < 4; x++)
		for(int y = 0; y < 4; y++) {
			if(x == y)
				m[x][y] = 1.0;
			else
				m[x][y] = 0.0;
		}
}