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/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
/** \file
* \ingroup bli
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* Extract 2D convex hull.
*
* \param points: An array of 2D points.
* \param n: The number of points in points.
* \param r_points: An array of the convex hull vertex indices (max is n).
* \return The number of indices in r_points.
*
* \note Performance is `O(n.log(n))`, same as `qsort`.
*
*/
int BLI_convexhull_2d(const float (*points)[2], int n, int r_points[/* n */]);
/**
* \return The best angle for fitting the points to an axis aligned bounding box.
*
* \note We could return the index of the best edge too if its needed.
*
* \param points: Arbitrary 2d points.
*/
float BLI_convexhull_aabb_fit_points_2d(const float (*points)[2], int n);
#ifdef __cplusplus
}
#endif
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