star-3d

Surface structuring for efficient 3D geometric queries
git clone git://git.meso-star.com/star-3d.git
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s3d_instance.c (2337B)

      1 /* Copyright (C) 2015-2023, 2026 |Méso|Star> (contact@meso-star.com)
      2  *
      3  * This file is part of Star-3D.
      4  *
      5  * Star-3D is free software: you can redistribute it and/or modify
      6  * it under the terms of the GNU General Public License as published by
      7  * the Free Software Foundation, either version 3 of the License, or
      8  * (at your option) any later version.
      9  *
     10  * Star-3D is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
     13  * GNU General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU General Public License
     16  * along with Star-3D. If not, see <http://www.gnu.org/licenses/>. */
     17 
     18 #include "s3d.h"
     19 #include "s3d_backend.h"
     20 #include "s3d_device_c.h"
     21 #include "s3d_instance.h"
     22 #include "s3d_shape_c.h"
     23 #include "s3d_scene_c.h"
     24 
     25 #include <rsys/float33.h>
     26 
     27 /*******************************************************************************
     28  * Helper functions
     29  ******************************************************************************/
     30 static void
     31 instance_release(ref_T* ref)
     32 {
     33   struct instance* inst;
     34   struct s3d_scene* scn;
     35   ASSERT(ref);
     36   inst = CONTAINER_OF(ref, struct instance, ref);
     37   scn = inst->scene;
     38   MEM_RM(scn->dev->allocator, inst);
     39   S3D(scene_ref_put(scn));
     40 }
     41 
     42 /*******************************************************************************
     43  * Local functions
     44  ******************************************************************************/
     45 res_T
     46 instance_create
     47   (struct s3d_scene* scn,
     48    struct instance** out_inst)
     49 {
     50   struct instance* inst = NULL;
     51   res_T res = RES_OK;
     52   ASSERT(scn && out_inst);
     53 
     54   inst = (struct instance*)
     55     MEM_CALLOC(scn->dev->allocator, 1, sizeof(struct instance));
     56   if(!inst) {
     57     res = RES_MEM_ERR;
     58     goto error;
     59   }
     60   f33_set_identity(inst->transform); /* rotation */
     61   f3_splat(inst->transform + 9, 0.f); /* Translation */
     62   ref_init(&inst->ref);
     63   S3D(scene_ref_get(scn));
     64   inst->scene = scn;
     65 exit:
     66   *out_inst = inst;
     67   return res;
     68 error:
     69   if(inst) {
     70     instance_ref_put(inst);
     71     inst = NULL;
     72   }
     73   goto exit;
     74 }
     75 
     76 void
     77 instance_ref_get(struct instance* inst)
     78 {
     79   ASSERT(inst);
     80   ref_get(&inst->ref);
     81 }
     82 
     83 void
     84 instance_ref_put(struct instance* inst)
     85 {
     86   ASSERT(inst);
     87   ref_put(&inst->ref, instance_release);
     88 }
     89