/******************************************************************************
 * Spine Runtime Software License - Version 1.1
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms in whole or in part, with
 * or without modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. A Spine Single User License, Professional License, or Education License must
 *    be purchased from Esoteric Software and the license must remain valid:
 *    http://esotericsoftware.com/
 * 2. Redistributions of source code must retain this license, which is the
 *    above copyright notice, this declaration of conditions and the following
 *    disclaimer.
 * 3. Redistributions in binary form must reproduce this license, which is the
 *    above copyright notice, this declaration of conditions and the following
 *    disclaimer, in the documentation and/or other materials provided with the
 *    distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 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 THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#ifndef SPINE_SKELETONBOUNDS_H_
#define SPINE_SKELETONBOUNDS_H_

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

#ifdef __cplusplus
extern "C" {
#endif

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

BoundingPolygon* BoundingPolygon_create (int capacity);
void BoundingPolygon_dispose (BoundingPolygon* self);

int/*bool*/BoundingPolygon_containsPoint (BoundingPolygon* polygon, float x, float y);
int/*bool*/BoundingPolygon_intersectsSegment (BoundingPolygon* polygon, float x1, float y1, float x2, float y2);

/**/

typedef struct {
	int count;
	BoundingBoxAttachment** boundingBoxes;
	BoundingPolygon** polygons;

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

SkeletonBounds* SkeletonBounds_create ();
void SkeletonBounds_dispose (SkeletonBounds* self);
void SkeletonBounds_update (SkeletonBounds* self, Skeleton* skeleton, int/*bool*/updateAabb);

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

/** Returns true if the axis aligned bounding box intersects the line segment. */
int/*bool*/SkeletonBounds_aabbIntersectsSegment (SkeletonBounds* 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. */
int/*bool*/SkeletonBounds_aabbIntersectsSkeleton (SkeletonBounds* self, SkeletonBounds* 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 SkeletonBounds_aabbContainsPoint returns true. */
BoundingBoxAttachment* SkeletonBounds_containsPoint (SkeletonBounds* 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 SkeletonBounds_aabbIntersectsSegment returns true. */
BoundingBoxAttachment* SkeletonBounds_intersectsSegment (SkeletonBounds* self, float x1, float y1, float x2, float y2);

/** Returns the polygon for the specified bounding box, or null. */
BoundingPolygon* SkeletonBounds_getPolygon (SkeletonBounds* self, BoundingBoxAttachment* boundingBox);

#ifdef __cplusplus
}
#endif

#endif /* SPINE_SKELETONBOUNDS_H_ */