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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
#pragma once
/** \file
* \ingroup bli
*/
#ifdef __cplusplus
extern "C" {
#endif
typedef struct Quadric {
double a2, ab, ac, ad, b2, bc, bd, c2, cd, d2;
} Quadric;
/* Conversion. */
void BLI_quadric_from_plane(Quadric *q, const double v[4]);
void BLI_quadric_to_vector_v3(const Quadric *q, double v[3]);
void BLI_quadric_clear(Quadric *q);
/* Math operations. */
void BLI_quadric_add_qu_qu(Quadric *a, const Quadric *b);
void BLI_quadric_add_qu_ququ(Quadric *r, const Quadric *a, const Quadric *b);
void BLI_quadric_mul(Quadric *a, double scalar);
/* Solve. */
double BLI_quadric_evaluate(const Quadric *q, const double v[3]);
bool BLI_quadric_optimize(const Quadric *q, double v[3], double epsilon);
#ifdef __cplusplus
}
#endif
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