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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
/** Calculate the index number of a voxel, given x/y/z integer coords and resolution vector. */
#define BLI_VOXEL_INDEX(x, y, z, res) \
((int64_t)(x) + (int64_t)(y) * (int64_t)(res)[0] + \
(int64_t)(z) * (int64_t)(res)[0] * (int64_t)(res)[1])
/* All input coordinates must be in bounding box 0.0 - 1.0. */
float BLI_voxel_sample_nearest(const float *data, const int res[3], const float co[3]);
float BLI_voxel_sample_trilinear(const float *data, const int res[3], const float co[3]);
float BLI_voxel_sample_triquadratic(const float *data, const int res[3], const float co[3]);
float BLI_voxel_sample_tricubic(const float *data,
const int res[3],
const float co[3],
int bspline);
#ifdef __cplusplus
}
#endif
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