#ifndef __NR_MACROS_H__
#define __NR_MACROS_H__

/*
 * Pixel buffer rendering library
 *
 * Authors:
 *   Lauris Kaplinski <lauris@kaplinski.com>
 *
 * This code is in public domain
 */

#include "config.h"

#include <math.h>

#if HAVE_STDLIB_H
#include <stdlib.h>
#endif

#include <libnr/nr-types.h>

#define nr_new(t,n) ((t *) malloc ((n) * sizeof (t)))
#define nr_free free
#define nr_renew(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))

#ifndef TRUE
#define TRUE (!0)
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef MAX
#define MAX(a,b) (((a) < (b)) ? (b) : (a))
#endif
#ifndef MIN
#define MIN(a,b) (((a) > (b)) ? (b) : (a))
#endif
#ifndef CLAMP
#define CLAMP(v,a,b) (((v) < (a)) ? (a) : ((v) > (b)) ? (b) : (v))
#endif

#define NR_DF_TEST_CLOSE(a,b,e) (fabs ((a) - (b)) <= (e))
#define NR_MATRIX_DF_TEST_CLOSE(a,b,e) (NR_DF_TEST_CLOSE ((a)->c[4], (b)->c[4], e) && \
				        NR_DF_TEST_CLOSE ((a)->c[5], (b)->c[5], e) && \
					NR_DF_TEST_CLOSE ((a)->c[0], (b)->c[0], e) && \
					NR_DF_TEST_CLOSE ((a)->c[1], (b)->c[1], e) && \
					NR_DF_TEST_CLOSE ((a)->c[2], (b)->c[2], e) && \
					NR_DF_TEST_CLOSE ((a)->c[3], (b)->c[3], e))
#define NR_MATRIX_DF_TEST_TRANSFORM_CLOSE(a,b,e) (NR_DF_TEST_CLOSE ((a)->c[0], (b)->c[0], e) && \
				        NR_DF_TEST_CLOSE ((a)->c[1], (b)->c[1], e) && \
					NR_DF_TEST_CLOSE ((a)->c[2], (b)->c[2], e) && \
					NR_DF_TEST_CLOSE ((a)->c[3], (b)->c[3], e))
#define NR_MATRIX_DF_TEST_TRANSLATE_CLOSE(a,b,e) (NR_DF_TEST_CLOSE ((a)->c[4], (b)->c[4], e) && \
					NR_DF_TEST_CLOSE ((a)->c[5], (b)->c[5], e))
#define NR_POINT_DF_TEST_CLOSE(a,b,e) (NR_DF_TEST_CLOSE ((a)->x, (b)->x, e) && NR_DF_TEST_CLOSE ((a)->y, (b)->y, e))
#define NR_RECT_DFLS_TEST_EMPTY(a) (((a)->x0 >= (a)->x1) || ((a)->y0 >= (a)->y1))
#define NR_RECT_DFLS_TEST_INTERSECT(a,b) (((a)->x0 < (b)->x1) && ((a)->x1 > (b)->x0) && ((a)->y0 < (b)->y1) && ((a)->y1 > (b)->y0))
#define NR_RECT_DF_POINT_DF_TEST_INSIDE(r,p) (((p)->x >= (r)->x0) && ((p)->x < (r)->x1) && ((p)->y >= (r)->y0) && ((p)->y < (r)->y1))
#define NR_RECT_LS_POINT_LS_TEST_INSIDE(r,p) (((p)->x >= (r)->x0) && ((p)->x < (r)->x1) && ((p)->y >= (r)->y0) && ((p)->y < (r)->y1))

#define NR_MATRIX_D_TO_DOUBLE(m) ((m)->c)
#define NR_MATRIX_D_FROM_DOUBLE(d) ((NRMatrixD *) &(d)[0])

#endif
