/******************************************************************************
 * Spine Runtimes License Agreement
 * Last updated January 1, 2020. Replaces all prior versions.
 *
 * Copyright (c) 2013-2020, Esoteric Software LLC
 *
 * Integration of the Spine Runtimes into software or otherwise creating
 * derivative works of the Spine Runtimes is permitted under the terms and
 * conditions of Section 2 of the Spine Editor License Agreement:
 * http://esotericsoftware.com/spine-editor-license
 *
 * Otherwise, it is permitted to integrate the Spine Runtimes into software
 * or otherwise create derivative works of the Spine Runtimes (collectively,
 * "Products"), provided that each user of the Products must obtain their own
 * Spine Editor license and redistribution of the Products in any form must
 * include this license and copyright notice.
 *
 * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
 * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#ifndef SPINE_ATLAS_H_
#define SPINE_ATLAS_H_

#include <spine/dll.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct spAtlas spAtlas;

typedef enum {
	SP_ATLAS_UNKNOWN_FORMAT,
	SP_ATLAS_ALPHA,
	SP_ATLAS_INTENSITY,
	SP_ATLAS_LUMINANCE_ALPHA,
	SP_ATLAS_RGB565,
	SP_ATLAS_RGBA4444,
	SP_ATLAS_RGB888,
	SP_ATLAS_RGBA8888
} spAtlasFormat;

typedef enum {
	SP_ATLAS_UNKNOWN_FILTER,
	SP_ATLAS_NEAREST,
	SP_ATLAS_LINEAR,
	SP_ATLAS_MIPMAP,
	SP_ATLAS_MIPMAP_NEAREST_NEAREST,
	SP_ATLAS_MIPMAP_LINEAR_NEAREST,
	SP_ATLAS_MIPMAP_NEAREST_LINEAR,
	SP_ATLAS_MIPMAP_LINEAR_LINEAR
} spAtlasFilter;

typedef enum {
	SP_ATLAS_MIRROREDREPEAT,
	SP_ATLAS_CLAMPTOEDGE,
	SP_ATLAS_REPEAT
} spAtlasWrap;

typedef struct spAtlasPage spAtlasPage;
struct spAtlasPage {
	const spAtlas* atlas;
	const char* name;
	spAtlasFormat format;
	spAtlasFilter minFilter, magFilter;
	spAtlasWrap uWrap, vWrap;

	void* rendererObject;
	int width, height;

	spAtlasPage* next;
};

SP_API spAtlasPage* spAtlasPage_create (spAtlas* atlas, const char* name);
SP_API void spAtlasPage_dispose (spAtlasPage* self);

#ifdef SPINE_SHORT_NAMES
typedef spAtlasFormat AtlasFormat;
#define ATLAS_UNKNOWN_FORMAT SP_ATLAS_UNKNOWN_FORMAT
#define ATLAS_ALPHA SP_ATLAS_ALPHA
#define ATLAS_INTENSITY SP_ATLAS_INTENSITY
#define ATLAS_LUMINANCE_ALPHA SP_ATLAS_LUMINANCE_ALPHA
#define ATLAS_RGB565 SP_ATLAS_RGB565
#define ATLAS_RGBA4444 SP_ATLAS_RGBA4444
#define ATLAS_RGB888 SP_ATLAS_RGB888
#define ATLAS_RGBA8888 SP_ATLAS_RGBA8888
typedef spAtlasFilter AtlasFilter;
#define ATLAS_UNKNOWN_FILTER SP_ATLAS_UNKNOWN_FILTER
#define ATLAS_NEAREST SP_ATLAS_NEAREST
#define ATLAS_LINEAR SP_ATLAS_LINEAR
#define ATLAS_MIPMAP SP_ATLAS_MIPMAP
#define ATLAS_MIPMAP_NEAREST_NEAREST SP_ATLAS_MIPMAP_NEAREST_NEAREST
#define ATLAS_MIPMAP_LINEAR_NEAREST SP_ATLAS_MIPMAP_LINEAR_NEAREST
#define ATLAS_MIPMAP_NEAREST_LINEAR SP_ATLAS_MIPMAP_NEAREST_LINEAR
#define ATLAS_MIPMAP_LINEAR_LINEAR SP_ATLAS_MIPMAP_LINEAR_LINEAR
typedef spAtlasWrap AtlasWrap;
#define ATLAS_MIRROREDREPEAT SP_ATLAS_MIRROREDREPEAT
#define ATLAS_CLAMPTOEDGE SP_ATLAS_CLAMPTOEDGE
#define ATLAS_REPEAT SP_ATLAS_REPEAT
typedef spAtlasPage AtlasPage;
#define AtlasPage_create(...) spAtlasPage_create(__VA_ARGS__)
#define AtlasPage_dispose(...) spAtlasPage_dispose(__VA_ARGS__)
#endif

/**/

typedef struct spAtlasRegion spAtlasRegion;
struct spAtlasRegion {
	const char* name;
	int x, y, width, height;
	float u, v, u2, v2;
	int offsetX, offsetY;
	int originalWidth, originalHeight;
	int index;
	int/*bool*/rotate;
	int degrees;
	int/*bool*/flip;
	int* splits;
	int* pads;

	spAtlasPage* page;

	spAtlasRegion* next;
};

SP_API spAtlasRegion* spAtlasRegion_create ();
SP_API void spAtlasRegion_dispose (spAtlasRegion* self);

#ifdef SPINE_SHORT_NAMES
typedef spAtlasRegion AtlasRegion;
#define AtlasRegion_create(...) spAtlasRegion_create(__VA_ARGS__)
#define AtlasRegion_dispose(...) spAtlasRegion_dispose(__VA_ARGS__)
#endif

/**/

struct spAtlas {
	spAtlasPage* pages;
	spAtlasRegion* regions;

	void* rendererObject;
};

/* Image files referenced in the atlas file will be prefixed with dir. */
SP_API spAtlas* spAtlas_create (const char* data, int length, const char* dir, void* rendererObject);
/* Image files referenced in the atlas file will be prefixed with the directory containing the atlas file. */
SP_API spAtlas* spAtlas_createFromFile (const char* path, void* rendererObject);
SP_API void spAtlas_dispose (spAtlas* atlas);

/* Returns 0 if the region was not found. */
SP_API spAtlasRegion* spAtlas_findRegion (const spAtlas* self, const char* name);

#ifdef SPINE_SHORT_NAMES
typedef spAtlas Atlas;
#define Atlas_create(...) spAtlas_create(__VA_ARGS__)
#define Atlas_createFromFile(...) spAtlas_createFromFile(__VA_ARGS__)
#define Atlas_dispose(...) spAtlas_dispose(__VA_ARGS__)
#define Atlas_findRegion(...) spAtlas_findRegion(__VA_ARGS__)
#endif

#ifdef __cplusplus
}
#endif

#endif /* SPINE_ATLAS_H_ */