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/*
* Copyright (c), Recep Aslantas.
*
* MIT License (MIT), http://opensource.org/licenses/MIT
* Full license can be found in the LICENSE file
*/
#ifndef cglms_boxs_h
#define cglms_boxs_h
#include "../common.h"
#include "../types-struct.h"
#include "../box.h"
#include "vec3.h"
#include "vec4.h"
#include "mat4.h"
/* api definition */
#define glms_aabb_(NAME) CGLM_STRUCTAPI(aabb, NAME)
/*!
* @brief apply transform to Axis-Aligned Bounding Box
*
* @param[in] box bounding box
* @param[in] m transform matrix
* @param[out] dest transformed bounding box
*/
CGLM_INLINE
void
glms_aabb_(transform)(vec3s box[2], mat4s m, vec3s dest[2]) {
vec3 rawBox[2];
vec3 rawDest[2];
glms_vec3_(unpack)(rawBox, box, 2);
glm_aabb_transform(rawBox, m.raw, rawDest);
glms_vec3_(pack)(dest, rawDest, 2);
}
/*!
* @brief merges two AABB bounding box and creates new one
*
* two box must be in same space, if one of box is in different space then
* you should consider to convert it's space by glm_box_space
*
* @param[in] box1 bounding box 1
* @param[in] box2 bounding box 2
* @param[out] dest merged bounding box
*/
CGLM_INLINE
void
glms_aabb_(merge)(vec3s box1[2], vec3s box2[2], vec3s dest[2]) {
vec3 rawBox1[2];
vec3 rawBox2[2];
vec3 rawDest[2];
glms_vec3_(unpack)(rawBox1, box1, 2);
glms_vec3_(unpack)(rawBox2, box2, 2);
glm_aabb_merge(rawBox1, rawBox2, rawDest);
glms_vec3_(pack)(dest, rawDest, 2);
}
/*!
* @brief crops a bounding box with another one.
*
* this could be useful for getting a bbox which fits with view frustum and
* object bounding boxes. In this case you crop view frustum box with objects
* box
*
* @param[in] box bounding box 1
* @param[in] cropBox crop box
* @param[out] dest cropped bounding box
*/
CGLM_INLINE
void
glms_aabb_(crop)(vec3s box[2], vec3s cropBox[2], vec3s dest[2]) {
vec3 rawBox[2];
vec3 rawCropBox[2];
vec3 rawDest[2];
glms_vec3_(unpack)(rawBox, box, 2);
glms_vec3_(unpack)(rawCropBox, cropBox, 2);
glm_aabb_crop(rawBox, rawCropBox, rawDest);
glms_vec3_(pack)(dest, rawDest, 2);
}
/*!
* @brief crops a bounding box with another one.
*
* this could be useful for getting a bbox which fits with view frustum and
* object bounding boxes. In this case you crop view frustum box with objects
* box
*
* @param[in] box bounding box
* @param[in] cropBox crop box
* @param[in] clampBox minimum box
* @param[out] dest cropped bounding box
*/
CGLM_INLINE
void
glms_aabb_(crop_until)(vec3s box[2],
vec3s cropBox[2],
vec3s clampBox[2],
vec3s dest[2]) {
glms_aabb_(crop)(box, cropBox, dest);
glms_aabb_(merge)(clampBox, dest, dest);
}
/*!
* @brief check if AABB intersects with frustum planes
*
* this could be useful for frustum culling using AABB.
*
* OPTIMIZATION HINT:
* if planes order is similar to LEFT, RIGHT, BOTTOM, TOP, NEAR, FAR
* then this method should run even faster because it would only use two
* planes if object is not inside the two planes
* fortunately cglm extracts planes as this order! just pass what you got!
*
* @param[in] box bounding box
* @param[in] planes frustum planes
*/
CGLM_INLINE
bool
glms_aabb_(frustum)(vec3s box[2], vec4s planes[6]) {
vec3 rawBox[2];
vec4 rawPlanes[6];
glms_vec3_(unpack)(rawBox, box, 2);
glms_vec4_(unpack)(rawPlanes, planes, 6);
return glm_aabb_frustum(rawBox, rawPlanes);
}
/*!
* @brief invalidate AABB min and max values
*
* @param[in, out] box bounding box
*/
CGLM_INLINE
void
glms_aabb_(invalidate)(vec3s box[2]) {
box[0] = glms_vec3_(broadcast)(FLT_MAX);
box[1] = glms_vec3_(broadcast)(-FLT_MAX);
}
/*!
* @brief check if AABB is valid or not
*
* @param[in] box bounding box
*/
CGLM_INLINE
bool
glms_aabb_(isvalid)(vec3s box[2]) {
vec3 rawBox[2];
glms_vec3_(unpack)(rawBox, box, 2);
return glm_aabb_isvalid(rawBox);
}
/*!
* @brief distance between of min and max
*
* @param[in] box bounding box
*/
CGLM_INLINE
float
glms_aabb_(size)(vec3s box[2]) {
return glm_vec3_distance(box[0].raw, box[1].raw);
}
/*!
* @brief radius of sphere which surrounds AABB
*
* @param[in] box bounding box
*/
CGLM_INLINE
float
glms_aabb_(radius)(vec3s box[2]) {
return glms_aabb_(size)(box) * 0.5f;
}
/*!
* @brief computes center point of AABB
*
* @param[in] box bounding box
* @returns center of bounding box
*/
CGLM_INLINE
vec3s
glms_aabb_(center)(vec3s box[2]) {
return glms_vec3_(center)(box[0], box[1]);
}
/*!
* @brief check if two AABB intersects
*
* @param[in] box bounding box
* @param[in] other other bounding box
*/
CGLM_INLINE
bool
glms_aabb_(aabb)(vec3s box[2], vec3s other[2]) {
vec3 rawBox[2];
vec3 rawOther[2];
glms_vec3_(unpack)(rawBox, box, 2);
glms_vec3_(unpack)(rawOther, other, 2);
return glm_aabb_aabb(rawBox, rawOther);
}
/*!
* @brief check if AABB intersects with sphere
*
* https://github.com/erich666/GraphicsGems/blob/master/gems/BoxSphere.c
* Solid Box - Solid Sphere test.
*
* @param[in] box solid bounding box
* @param[in] s solid sphere
*/
CGLM_INLINE
bool
glms_aabb_(sphere)(vec3s box[2], vec4s s) {
vec3 rawBox[2];
glms_vec3_(unpack)(rawBox, box, 2);
return glm_aabb_sphere(rawBox, s.raw);
}
/*!
* @brief check if point is inside of AABB
*
* @param[in] box bounding box
* @param[in] point point
*/
CGLM_INLINE
bool
glms_aabb_(point)(vec3s box[2], vec3s point) {
vec3 rawBox[2];
glms_vec3_(unpack)(rawBox, box, 2);
return glm_aabb_point(rawBox, point.raw);
}
/*!
* @brief check if AABB contains other AABB
*
* @param[in] box bounding box
* @param[in] other other bounding box
*/
CGLM_INLINE
bool
glms_aabb_(contains)(vec3s box[2], vec3s other[2]) {
vec3 rawBox[2];
vec3 rawOther[2];
glms_vec3_(unpack)(rawBox, box, 2);
glms_vec3_(unpack)(rawOther, other, 2);
return glm_aabb_contains(rawBox, rawOther);
}
#endif /* cglms_boxs_h */
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