package edu.upvehu.gbg.tap.matrix;

import java.util.Arrays;

/**
 *
 * @author bcpbogag
 */
public class Matrix {
	//TODO falta toda la documentación  

    private double[][] theMatrix=null;
    
    public Matrix(int rows,int columns ) {
	//TODO chequear la consistencia de los indices y arrojar excepción si procede
        theMatrix=new double[rows][columns];
        for (double[] row:theMatrix) Arrays.fill(row, 0.0);
    }
    
     public Matrix(int dim) {
        this(dim,dim);
    }
  
    public static Matrix getIdentity(int dim) {
        Matrix identity=new Matrix(dim);
        for (int i=0;i<dim;i++) identity.theMatrix[i][i]=1;
        return identity;
    }
    public static Matrix getDiagonal(int[] diagonal) {
        
    }
    
    public int getRows(){}
    public int getColumns(){}
	//TODO la clase Dimension está por definir... 
    public Dimension getDimensions(){}
    public double getElement(int row, int column){
      if (row<0 || row>=getRows() || column<0 || column>=getColumns() )
        throw new IndexOutOfBoundsException("Fuera de rango "+row+","+column);
      return theMatrix[row][column];
    }
    public void setElement(int row, int column, double value){}
    
    public void transpose();
    public Matrix getTransposed();
    
    public static Matrix add(Matrix m1, Matrix m2) {
	//TODO aquí podría chequearse la igualdad usando la calse Dimension, pero aún sabemos poco de chequear la igualdad.
      if (m1.getRows()!=m2.getRows() || m1.getColumns()!=m2.getColumns()) 
        throw new IllegalArgumentException("Dimensiones incompatibles");
    }
    public static Matrix add(double d, Matrix m) {}
    public static Matrix subtract(Matrix m1, Matrix m2) {}
    public static Matrix subtract(double d, Matrix m2) {}
    public static Matrix multiply(Matrix m1, Matrix m2) {}
    public static Matrix multiply(double d, Matrix m2) {}
    
    public double getTrace();
    public double getDeterminant();
    
    public boolean isSquared(){}
    public boolean isDiagonal(){}
    public boolean isSimetric(){}
    public boolean isIdempotent(){}
    
}