star-3d

Surface structuring for efficient 3D geometric queries
git clone git://git.meso-star.fr/star-3d.git
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s3d_instance.c (2310B)

      1 /* Copyright (C) 2015-2023 |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 "s3d.h"
     17 #include "s3d_backend.h"
     18 #include "s3d_device_c.h"
     19 #include "s3d_instance.h"
     20 #include "s3d_shape_c.h"
     21 #include "s3d_scene_c.h"
     22 
     23 #include <rsys/float33.h>
     24 
     25 /*******************************************************************************
     26  * Helper functions
     27  ******************************************************************************/
     28 static void
     29 instance_release(ref_T* ref)
     30 {
     31   struct instance* inst;
     32   struct s3d_scene* scn;
     33   ASSERT(ref);
     34   inst = CONTAINER_OF(ref, struct instance, ref);
     35   scn = inst->scene;
     36   MEM_RM(scn->dev->allocator, inst);
     37   S3D(scene_ref_put(scn));
     38 }
     39 
     40 /*******************************************************************************
     41  * Local functions
     42  ******************************************************************************/
     43 res_T
     44 instance_create
     45   (struct s3d_scene* scn,
     46    struct instance** out_inst)
     47 {
     48   struct instance* inst = NULL;
     49   res_T res = RES_OK;
     50   ASSERT(scn && out_inst);
     51 
     52   inst = (struct instance*)
     53     MEM_CALLOC(scn->dev->allocator, 1, sizeof(struct instance));
     54   if(!inst) {
     55     res = RES_MEM_ERR;
     56     goto error;
     57   }
     58   f33_set_identity(inst->transform); /* rotation */
     59   f3_splat(inst->transform + 9, 0.f); /* Translation */
     60   ref_init(&inst->ref);
     61   S3D(scene_ref_get(scn));
     62   inst->scene = scn;
     63 exit:
     64   *out_inst = inst;
     65   return res;
     66 error:
     67   if(inst) {
     68     instance_ref_put(inst);
     69     inst = NULL;
     70   }
     71   goto exit;
     72 }
     73 
     74 void
     75 instance_ref_get(struct instance* inst)
     76 {
     77   ASSERT(inst);
     78   ref_get(&inst->ref);
     79 }
     80 
     81 void
     82 instance_ref_put(struct instance* inst)
     83 {
     84   ASSERT(inst);
     85   ref_put(&inst->ref, instance_release);
     86 }
     87