#ifdef KLEIN_H
#error file included twice
#endif
#define KLEIN_H

#ifdef KLEIN_IMPLEMENT
#include <stdio.h>
#include <stdlib.h>
#endif

struct klein
{
	unsigned long vertex_size;
	float *vertex, *normals;
	unsigned char dim;
};

/*
	The klein format must have:
		5 bytes with klein.
		1 byte empty for expantions
		1 byte with the dimention of the surface

*/

static inline
int klein_export_file(struct klein klein, const char * filename);


#ifdef KLEIN_IMPLEMENT
static inline
int klein_export_file(struct klein klein, const char * filename)
{
	FILE *file = fopen(filename, "wb");
	if (!file)
		return 1;

	fwrite("KLEIN", 1, 5, file);
	fwrite("\0", 1, 1, file);
	fwrite(&klein.dim, 1, 1, file);
	fwrite(&klein.vertex_size, 8, 1, file);
	fwrite(klein.vertex, 4, klein.vertex_size * klein.dim, file);
	fwrite(klein.normals, 4, klein.vertex_size * klein.dim, file);

	fclose(file);
	return 0;
}
#endif