1 /* 2 * This program is free software; you can redistribute it and/or 3 * modify it under the terms of the GNU General Public License 4 * as published by the Free Software Foundation; either version 2 5 * of the License, or (at your option) any later version. 6 * 7 * This program is distributed in the hope that it will be useful, 8 * but WITHOUT ANY WARRANTY; without even the implied warranty of 9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10 * GNU General Public License for more details. 11 * 12 * You should have received a copy of the GNU General Public License 13 * along with this program; if not, write to the Free Software Foundation, 14 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 15 * 16 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. 17 * All rights reserved. 18 */ 19 20 #pragma once 21 22 /** \file 23 * \ingroup bli 24 */ 25 26 #ifdef __cplusplus 27 extern "C" { 28 #endif 29 30 /** Find the index number of a voxel, given x/y/z integer coords and resolution vector. */ 31 32 #define BLI_VOXEL_INDEX(x, y, z, res) \ 33 ((int64_t)(x) + (int64_t)(y) * (int64_t)(res)[0] + \ 34 (int64_t)(z) * (int64_t)(res)[0] * (int64_t)(res)[1]) 35 36 /* all input coordinates must be in bounding box 0.0 - 1.0 */ 37 float BLI_voxel_sample_nearest(const float *data, const int res[3], const float co[3]); 38 float BLI_voxel_sample_trilinear(const float *data, const int res[3], const float co[3]); 39 float BLI_voxel_sample_triquadratic(const float *data, const int res[3], const float co[3]); 40 float BLI_voxel_sample_tricubic(const float *data, 41 const int res[3], 42 const float co[3], 43 int bspline); 44 45 #ifdef __cplusplus 46 } 47 #endif 48