/*
TEXTURE_PAGE.H

header included in hcex build.
*/

#ifndef __TEXTURE_PAGE_H
#define __TEXTURE_PAGE_H
#pragma once

/* ---------- constants */

enum
{
	MAXIMUM_TEXTURES_PER_PAGE = 0x7FFF
};

/* ---------- macros */

/* ---------- structures */

struct data_array;

struct texture_page_texture
{
	short identifier;
	boolean sorted;
	byte pad;
	short x;
	short y;
	short width;
	short height;
};

struct texture_page
{
	boolean contains_unsorted_textures;
	byte pad0[3];
	void *user_data;
	short width;
	short height;
	short spacing;
	short padE;
	long texture_pixel_count;
	long used_pixel_count;
	struct data_array *textures;
};

typedef char texture_page_texture_size_assert[
	sizeof(struct texture_page_texture) == 0xC ? 1 : -1];
typedef char texture_page_size_assert[
	sizeof(struct texture_page) == 0x1C ? 1 : -1];

/* ---------- prototypes/TEXTURE_PAGE.C */

float texture_page_fraction_used(
	struct texture_page *texture_page,
	boolean use_sorted_pixel_count);
struct texture_page *texture_page_new(
	void *user_data,
	short page_width,
	short page_height,
	short spacing);
void texture_page_delete(
	struct texture_page *texture_page);
void texture_page_textures_begin(
	struct texture_page *texture_page);
struct texture_page_texture *texture_page_texture_get(
	struct texture_page *texture_page,
	long texture_index);
long texture_page_texture_new(
	struct texture_page *texture_page,
	short width,
	short height,
	boolean immediate);
void texture_page_textures_cancel(
	struct texture_page *texture_page);
boolean texture_page_textures_end(
	struct texture_page *texture_page);
void texture_page_texture_delete(
	struct texture_page *texture_page,
	long texture_index);
boolean texture_page_resize(
	struct texture_page *texture_page,
	short width,
	short height);

/* ---------- globals */

/* ---------- public code */

#endif // __TEXTURE_PAGE_H