git.rot13.org Git - simavr/blob - examples/shared/libc3/src/c3geometry.c

   1 /*
   2         c3geometry.c
   3
   4         Copyright 2008-2012 Michel Pollet <buserror@gmail.com>
   5
   6         This file is part of simavr.
   7
   8         simavr is free software: you can redistribute it and/or modify
   9         it under the terms of the GNU General Public License as published by
  10         the Free Software Foundation, either version 3 of the License, or
  11         (at your option) any later version.
  12
  13         simavr is distributed in the hope that it will be useful,
  14         but WITHOUT ANY WARRANTY; without even the implied warranty of
  15         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16         GNU General Public License for more details.
  17
  18         You should have received a copy of the GNU General Public License
  19         along with simavr.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22
  23 #include "c3object.h"
  24 #include "c3context.h"
  25 #include "c3driver_geometry.h"
  26 #include "c3driver_context.h"
  27
  28 static void
  29 _c3geometry_dispose(
  30                 c3geometry_p  g,
  31                 const struct c3driver_geometry_t *d)
  32 {
  33         /*
  34          * If we're still attached to an object, detach
  35          */
  36         if (g->object) {
  37                 for (int oi = 0; oi < g->object->geometry.count; oi++)
  38                         if (g->object->geometry.e[oi] == g) {
  39                                 c3geometry_array_delete(&g->object->geometry, oi, 1);
  40                                 c3object_set_dirty(g->object, true);
  41                                 break;
  42                         }
  43                 g->object = NULL;
  44         }
  45         /* let the context driver have a chance to clear it's own stuff */
  46         if (g->object && g->object->context)
  47                 C3_DRIVER(g->object->context, geometry_dispose, g);
  48         str_free(g->name);
  49         c3vertex_array_free(&g->vertice);
  50         c3vertex_array_free(&g->projected);
  51         c3tex_array_free(&g->textures);
  52         c3colorf_array_free(&g->colorf);
  53         free(g);
  54 //      C3_DRIVER_INHERITED(g, d, dispose);
  55 }
  56
  57 static void
  58 _c3geometry_project(
  59                 c3geometry_p g,
  60                 const struct c3driver_geometry_t *d,
  61                 c3mat4p m)
  62 {
  63         if (g->vertice.count) {
  64                 c3vertex_array_realloc(&g->projected, g->vertice.count);
  65                 g->projected.count = g->vertice.count;
  66                 for (int vi = 0; vi < g->vertice.count; vi++) {
  67                         g->projected.e[vi] = c3mat4_mulv3(m, g->vertice.e[vi]);
  68                         if (vi == 0)
  69                                 g->bbox.min = g->bbox.max = g->projected.e[vi];
  70                         else {
  71                                 g->bbox.max = c3vec3_min(g->bbox.min, g->projected.e[vi]);
  72                                 g->bbox.max = c3vec3_max(g->bbox.max, g->projected.e[vi]);
  73                         }
  74                 }
  75         }
  76
  77         if (g->object && g->object->context)
  78                 C3_DRIVER(g->object->context, geometry_project, g, m);
  79         g->dirty = 0;
  80 //      C3_DRIVER_INHERITED(g, d, project);
  81 }
  82
  83 static void
  84 _c3geometry_draw(
  85                 c3geometry_p g,
  86                 const struct c3driver_geometry_t *d)
  87 {
  88         if (g->object && g->object->context)
  89                 C3_DRIVER(g->object->context, geometry_draw, g);
  90 //      C3_DRIVER_INHERITED(g, d, draw);
  91 }
  92
  93 const  c3driver_geometry_t c3geometry_driver = {
  94         .dispose = _c3geometry_dispose,
  95         .project = _c3geometry_project,
  96         .draw = _c3geometry_draw,
  97 };
  98
  99 c3geometry_p
 100 c3geometry_new(
 101                 c3geometry_type_t type,
 102                 c3object_p o /* = NULL */)
 103 {
 104         c3geometry_p res = malloc(sizeof(c3geometry_t));
 105         return c3geometry_init(res, type, o);
 106 }
 107
 108 c3geometry_p
 109 c3geometry_init(
 110                 c3geometry_p g,
 111                 c3geometry_type_t type,
 112                 struct c3object_t * o /* = NULL */)
 113 {
 114         memset(g, 0, sizeof(*g));
 115         static const c3driver_geometry_t * list[] = {
 116                         &c3geometry_driver, NULL,
 117         };
 118         g->driver = list;
 119         g->type = type;
 120         g->dirty = 1;
 121         if (o)
 122                 c3object_add_geometry(o, g);
 123         return g;
 124 }
 125
 126 c3driver_geometry_p
 127 c3geometry_get_custom(
 128                 c3geometry_p g )
 129 {
 130         if (g->custom)
 131                 return (c3driver_geometry_p)g->driver[0];
 132         int cnt = 0;
 133         for (int di = 0; g->driver[di]; di++)
 134                 cnt++;
 135         c3driver_geometry_p * newd = malloc(sizeof(c3driver_geometry_p) * (cnt + 2));
 136         memcpy(&newd[1], g->driver, (cnt + 1) * sizeof(c3driver_geometry_p));
 137         newd[0] = malloc(sizeof(c3driver_geometry_t));
 138         memset(newd[0], 0, sizeof(c3driver_geometry_t));
 139         g->custom = 1;
 140         g->driver = (typeof(g->driver))newd;
 141         return newd[0];
 142 }
 143
 144 void
 145 c3geometry_dispose(
 146                 c3geometry_p g)
 147 {
 148         C3_DRIVER(g, dispose);
 149 }
 150
 151 void
 152 c3geometry_project(
 153                 c3geometry_p g,
 154                 c3mat4p m)
 155 {
 156         if (!g->dirty)
 157                 return;
 158         C3_DRIVER(g, project, m);
 159 }
 160
 161 void
 162 c3geometry_draw(
 163                 c3geometry_p g )
 164 {
 165         C3_DRIVER(g, draw);
 166 }
 167
 168