/*
 *   Sweet is a small library for basic math and small matrix operations.
 *   Copyright 2014 Luc Girod.
 *
 * This library is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef SWEET_MATRIX_STACK
#define SWEET_MATRIX_STACK

#include "sweet_types.h"
#include "sweet_matrix.h"

#define SWEET_MATRIX_STACK_SIZE 128

typedef struct matrix_stack2
{
    mat2 matrix[SWEET_MATRIX_STACK_SIZE];
    unsigned int position;

}matrix_stack2;

typedef struct matrix_stack3
{
    mat3 matrix[SWEET_MATRIX_STACK_SIZE];
    unsigned int position;

}matrix_stack3;

typedef struct matrix_stack4
{
    mat4 matrix[SWEET_MATRIX_STACK_SIZE];
    unsigned int position;

}matrix_stack4;


matrix_stack2 sweet_matrix_stack2_new ();

matrix_stack3 sweet_matrix_stack3_new ();

matrix_stack4 sweet_matrix_stack4_new ();

int sweet_matrix_stack2_push (matrix_stack2 * ms);

int sweet_matrix_stack3_push (matrix_stack3 * ms);

int sweet_matrix_stack4_push (matrix_stack4 * ms);

int sweet_matrix_stack2_pop (matrix_stack2 * ms);

int sweet_matrix_stack3_pop (matrix_stack3 * ms);

int sweet_matrix_stack4_pop (matrix_stack4 * ms);

void sweet_matrix_stack2_mult (matrix_stack2 * ms, mat2 * m);

void sweet_matrix_stack3_mult (matrix_stack3 * ms, mat3 * m);

void sweet_matrix_stack4_mult (matrix_stack4 * ms, mat4 * m);

void sweet_matrix_stack2_set (matrix_stack2 * ms, mat2 * m);

void sweet_matrix_stack3_set (matrix_stack3 * ms, mat3 * m);

void sweet_matrix_stack4_set (matrix_stack4 * ms, mat4 * m);

mat2 * sweet_matrix_stack2_get_matrix_pointer (matrix_stack2 * m);

mat3 * sweet_matrix_stack3_get_matrix_pointer (matrix_stack3 * m);

mat4 * sweet_matrix_stack4_get_matrix_pointer (matrix_stack4 * m);
    
mat2 sweet_matrix_stack2_get_matrix (matrix_stack2 * m);

mat3 sweet_matrix_stack3_get_matrix (matrix_stack3 * m);

mat4 sweet_matrix_stack4_get_matrix (matrix_stack4 * m);

#endif