star-sf

Set of surface and volume scattering functions
git clone git://git.meso-star.fr/star-sf.git
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ssf_fresnel_no_op.c (1572B)

      1 /* Copyright (C) 2016-2018, 2021-2025 |Méso|Star> (contact@meso-star.com)
      2  *
      3  * This program is free software: you can redistribute it and/or modify
      4  * it under the terms of the GNU General Public License as published by
      5  * the Free Software Foundation, either version 3 of the License, or
      6  * (at your option) any later version.
      7  *
      8  * This program is distributed in the hope that it will be useful,
      9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
     11  * GNU General Public License for more details.
     12  *
     13  * You should have received a copy of the GNU General Public License
     14  * along with this program. If not, see <http://www.gnu.org/licenses/>. */
     15 
     16 #include "ssf.h"
     17 
     18 /*******************************************************************************
     19  * Private functions
     20  ******************************************************************************/
     21 static res_T
     22 fresnel_no_op_init(struct mem_allocator* allocator, void* fresnel)
     23 {
     24   (void)allocator, (void)fresnel;
     25   return RES_OK;
     26 }
     27 
     28 static void
     29 fresnel_no_op_release(void* fresnel)
     30 {
     31   (void)fresnel;
     32 }
     33 
     34 static double
     35 fresnel_no_op_eval(void* fresnel, const double cos_theta)
     36 {
     37   (void)fresnel, (void)cos_theta;
     38   return 1.0;
     39 }
     40 
     41 /*******************************************************************************
     42  * Exported symbol
     43  ******************************************************************************/
     44 const struct ssf_fresnel_type ssf_fresnel_no_op = {
     45   fresnel_no_op_init,
     46   fresnel_no_op_release,
     47   fresnel_no_op_eval,
     48   0, 1
     49 };
     50