/******************************************************************************
 * 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_SKELETONBOUNDS_H_
#define SPINE_SKELETONBOUNDS_H_

#include <spine/dll.h>
#include <spine/BoundingBoxAttachment.h>
#include <spine/Skeleton.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct spPolygon {
	float* const vertices;
	int count;
	int capacity;
} spPolygon;

SP_API spPolygon* spPolygon_create (int capacity);
SP_API void spPolygon_dispose (spPolygon* self);

SP_API int/*bool*/spPolygon_containsPoint (spPolygon* polygon, float x, float y);
SP_API int/*bool*/spPolygon_intersectsSegment (spPolygon* polygon, float x1, float y1, float x2, float y2);

#ifdef SPINE_SHORT_NAMES
typedef spPolygon Polygon;
#define Polygon_create(...) spPolygon_create(__VA_ARGS__)
#define Polygon_dispose(...) spPolygon_dispose(__VA_ARGS__)
#define Polygon_containsPoint(...) spPolygon_containsPoint(__VA_ARGS__)
#define Polygon_intersectsSegment(...) spPolygon_intersectsSegment(__VA_ARGS__)
#endif

/**/

typedef struct spSkeletonBounds {
	int count;
	spBoundingBoxAttachment** boundingBoxes;
	spPolygon** polygons;

	float minX, minY, maxX, maxY;
} spSkeletonBounds;

SP_API spSkeletonBounds* spSkeletonBounds_create ();
SP_API void spSkeletonBounds_dispose (spSkeletonBounds* self);
SP_API void spSkeletonBounds_update (spSkeletonBounds* self, spSkeleton* skeleton, int/*bool*/updateAabb);

/** Returns true if the axis aligned bounding box contains the point. */
SP_API int/*bool*/spSkeletonBounds_aabbContainsPoint (spSkeletonBounds* self, float x, float y);

/** Returns true if the axis aligned bounding box intersects the line segment. */
SP_API int/*bool*/spSkeletonBounds_aabbIntersectsSegment (spSkeletonBounds* self, float x1, float y1, float x2, float y2);

/** Returns true if the axis aligned bounding box intersects the axis aligned bounding box of the specified bounds. */
SP_API int/*bool*/spSkeletonBounds_aabbIntersectsSkeleton (spSkeletonBounds* self, spSkeletonBounds* bounds);

/** Returns the first bounding box attachment that contains the point, or null. When doing many checks, it is usually more
 * efficient to only call this method if spSkeletonBounds_aabbContainsPoint returns true. */
SP_API spBoundingBoxAttachment* spSkeletonBounds_containsPoint (spSkeletonBounds* self, float x, float y);

/** Returns the first bounding box attachment that contains the line segment, or null. When doing many checks, it is usually
 * more efficient to only call this method if spSkeletonBounds_aabbIntersectsSegment returns true. */
SP_API spBoundingBoxAttachment* spSkeletonBounds_intersectsSegment (spSkeletonBounds* self, float x1, float y1, float x2, float y2);

/** Returns the polygon for the specified bounding box, or null. */
SP_API spPolygon* spSkeletonBounds_getPolygon (spSkeletonBounds* self, spBoundingBoxAttachment* boundingBox);

#ifdef SPINE_SHORT_NAMES
typedef spSkeletonBounds SkeletonBounds;
#define SkeletonBounds_create(...) spSkeletonBounds_create(__VA_ARGS__)
#define SkeletonBounds_dispose(...) spSkeletonBounds_dispose(__VA_ARGS__)
#define SkeletonBounds_update(...) spSkeletonBounds_update(__VA_ARGS__)
#define SkeletonBounds_aabbContainsPoint(...) spSkeletonBounds_aabbContainsPoint(__VA_ARGS__)
#define SkeletonBounds_aabbIntersectsSegment(...) spSkeletonBounds_aabbIntersectsSegment(__VA_ARGS__)
#define SkeletonBounds_aabbIntersectsSkeleton(...) spSkeletonBounds_aabbIntersectsSkeleton(__VA_ARGS__)
#define SkeletonBounds_containsPoint(...) spSkeletonBounds_containsPoint(__VA_ARGS__)
#define SkeletonBounds_intersectsSegment(...) spSkeletonBounds_intersectsSegment(__VA_ARGS__)
#define SkeletonBounds_getPolygon(...) spSkeletonBounds_getPolygon(__VA_ARGS__)
#endif

#ifdef __cplusplus
}
#endif

#endif /* SPINE_SKELETONBOUNDS_H_ */