Torque2D/engine/source/spine/SkeletonBounds.h

/******************************************************************************
 * Spine Runtimes Software License
 * Version 2
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * You are granted a perpetual, non-exclusive, non-sublicensable and
 * non-transferable license to install, execute and perform the Spine Runtimes
 * Software (the "Software") solely for internal use. Without the written
 * permission of Esoteric Software, you may not (a) modify, translate, adapt or
 * otherwise create derivative works, improvements of the Software or develop
 * new applications using the Software or (b) remove, delete, alter or obscure
 * any trademarks or any copyright, trademark, patent or other intellectual
 * property or proprietary rights notices on or in the Software, including
 * any copy thereof. Redistributions in binary or source form must include
 * this license and terms. THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE
 * "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 SOFTARE 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;
} spPolygon;

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

int/*bool*/spPolygon_containsPoint (spPolygon* polygon, float x, float y);
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 {
	int count;
	spBoundingBoxAttachment** boundingBoxes;
	spPolygon** polygons;

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

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

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

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

/** Returns the polygon for the specified bounding box, or null. */
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_ */