git.mutantstargoat.com Git - retroray/blob - src/scr_mod.c

   1 /*
   2 RetroRay - integrated standalone vintage modeller/renderer
   3 Copyright (C) 2023  John Tsiombikas <nuclear@mutantstargoat.com>
   4
   5 This program 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 This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
  17 */
  18 #include "gaw/gaw.h"
  19 #include "app.h"
  20 #include "rtk.h"
  21 #include "scene.h"
  22 #include "cmesh.h"
  23 #include "meshgen.h"
  24
  25 enum {
  26         TBN_NEW, TBN_OPEN, TBN_SAVE, TBN_SEP1,
  27         TBN_SEL, TBN_MOVE, TBN_ROT, TBN_SCALE, TBN_SEP2,
  28         TBN_ADD, TBN_RM, TBN_SEP3,
  29         TBN_MTL, TBN_REND, TBN_VIEWREND, TBN_SEP4, TBN_CFG,
  30
  31         NUM_TOOL_BUTTONS
  32 };
  33 static const char *tbn_icon_name[] = {
  34         "new", "open", "save", 0,
  35         "sel", "move", "rot", "scale", 0,
  36         "add", "remove", 0,
  37         "mtl", "rend", "viewrend", 0, "cfg"
  38 };
  39 static int tbn_icon_pos[][2] = {
  40         {0,0}, {16,0}, {32,0}, {-1,-1},
  41         {48,0}, {64,0}, {80,0}, {96,0}, {-1,-1},
  42         {112,0}, {112,16}, {-1,-1},
  43         {48,16}, {64,16}, {80,16}, {-1,-1}, {96,16}
  44 };
  45 static rtk_icon *tbn_icons[NUM_TOOL_BUTTONS];
  46
  47 #define TOOLBAR_HEIGHT  26
  48
  49
  50 static int mdl_init(void);
  51 static void mdl_destroy(void);
  52 static int mdl_start(void);
  53 static void mdl_stop(void);
  54 static void mdl_display(void);
  55 static void mdl_reshape(int x, int y);
  56 static void mdl_keyb(int key, int press);
  57 static void mdl_mouse(int bn, int press, int x, int y);
  58 static void mdl_motion(int x, int y);
  59
  60 static void draw_grid(void);
  61 static void tbn_callback(rtk_widget *w, void *cls);
  62
  63 struct app_screen scr_model = {
  64         "modeller",
  65         mdl_init, mdl_destroy,
  66         mdl_start, mdl_stop,
  67         mdl_display, mdl_reshape,
  68         mdl_keyb, mdl_mouse, mdl_motion
  69 };
  70
  71 static rtk_widget *toolbar;
  72 static rtk_iconsheet *icons;
  73
  74 static struct cmesh *mesh_sph;
  75
  76 static float cam_theta, cam_phi = 20, cam_dist = 8;
  77
  78
  79 static int mdl_init(void)
  80 {
  81         int i;
  82         rtk_widget *w;
  83
  84         if(!(icons = rtk_load_iconsheet("data/icons.png"))) {
  85                 errormsg("failed to load iconsheet\n");
  86                 return -1;
  87         }
  88         for(i=0; i<NUM_TOOL_BUTTONS; i++) {
  89                 if(tbn_icon_name[i]) {
  90                         tbn_icons[i] = rtk_define_icon(icons, tbn_icon_name[i],
  91                                         tbn_icon_pos[i][0], tbn_icon_pos[i][1], 16, 16);
  92                 } else {
  93                         tbn_icons[i] = 0;
  94                 }
  95         }
  96
  97         if(!(toolbar = rtk_create_window(0, "toolbar", 0, 0, win_width, TOOLBAR_HEIGHT))) {
  98                 return -1;
  99         }
 100         rtk_win_layout(toolbar, RTK_HBOX);
 101
 102         for(i=0; i<NUM_TOOL_BUTTONS; i++) {
 103                 if(!tbn_icons[i]) {
 104                         rtk_create_separator(toolbar);
 105                 } else {
 106                         if(!(w = rtk_create_iconbutton(toolbar, tbn_icons[i], 0))) {
 107                                 return -1;
 108                         }
 109                         rtk_set_callback(w, tbn_callback, (void*)i);
 110                 }
 111         }
 112
 113         if(!(mesh_sph = cmesh_alloc())) {
 114                 errormsg("failed to allocate sphere vis mesh\n");
 115                 return -1;
 116         }
 117         gen_sphere(mesh_sph, 1.0f, 16, 8, 1.0f, 1.0f);
 118         return 0;
 119 }
 120
 121 static void mdl_destroy(void)
 122 {
 123         cmesh_free(mesh_sph);
 124         rtk_free_iconsheet(icons);
 125 }
 126
 127 static int mdl_start(void)
 128 {
 129         gaw_clear_color(0.125, 0.125, 0.125, 1);
 130
 131         gaw_enable(GAW_DEPTH_TEST);
 132         gaw_enable(GAW_CULL_FACE);
 133         gaw_enable(GAW_LIGHTING);
 134         gaw_enable(GAW_LIGHT0);
 135         return 0;
 136 }
 137
 138 static void mdl_stop(void)
 139 {
 140 }
 141
 142 static void mdl_display(void)
 143 {
 144         int i, num;
 145
 146         gaw_clear(GAW_COLORBUF | GAW_DEPTHBUF);
 147
 148         rtk_draw_widget(toolbar);
 149
 150         gaw_viewport(0, TOOLBAR_HEIGHT, win_width, win_height - TOOLBAR_HEIGHT);
 151
 152         gaw_matrix_mode(GAW_MODELVIEW);
 153         gaw_load_identity();
 154         gaw_translate(0, 0, -cam_dist);
 155         gaw_rotate(cam_phi, 1, 0, 0);
 156         gaw_rotate(cam_theta, 0, 1, 0);
 157
 158         draw_grid();
 159
 160         gaw_poly_wire();
 161
 162         num = scn_num_objects(scn);
 163         for(i=0; i<num; i++) {
 164                 struct object *obj = scn->objects[i];
 165                 struct sphere *sph;
 166
 167                 calc_object_matrix(obj);
 168                 gaw_push_matrix();
 169                 gaw_mult_matrix(obj->xform);
 170
 171                 switch(obj->type) {
 172                 case OBJ_SPHERE:
 173                         sph = (struct sphere*)obj;
 174                         gaw_scale(sph->rad, sph->rad, sph->rad);
 175                         cmesh_draw(mesh_sph);
 176                         break;
 177
 178                 default:
 179                         break;
 180                 }
 181
 182                 gaw_pop_matrix();
 183         }
 184
 185         gaw_poly_gouraud();
 186
 187         gaw_viewport(0, 0, win_width, win_height);
 188 }
 189
 190 static void draw_grid(void)
 191 {
 192         gaw_save();
 193         gaw_disable(GAW_LIGHTING);
 194
 195         gaw_begin(GAW_LINES);
 196         gaw_color3f(0.5, 0, 0);
 197         gaw_vertex3f(0, 0, 0);
 198         gaw_vertex3f(-100, 0, 0);
 199         gaw_vertex3f(0, 0, 0);
 200         gaw_vertex3f(100, 0, 0);
 201         gaw_color3f(0, 0.5, 0);
 202         gaw_vertex3f(0, 0, 0);
 203         gaw_vertex3f(0, 0, -100);
 204         gaw_vertex3f(0, 0, 0);
 205         gaw_vertex3f(0, 0, 100);
 206         gaw_end();
 207
 208         gaw_restore();
 209 }
 210
 211 static void mdl_reshape(int x, int y)
 212 {
 213         float aspect = (float)x / (float)(y - TOOLBAR_HEIGHT);
 214
 215         gaw_matrix_mode(GAW_PROJECTION);
 216         gaw_load_identity();
 217         gaw_perspective(50, aspect, 0.5, 100.0);
 218
 219         rtk_resize(toolbar, win_width, TOOLBAR_HEIGHT);
 220 }
 221
 222 static void mdl_keyb(int key, int press)
 223 {
 224         if(rtk_input_key(toolbar, key, press)) {
 225                 app_redisplay();
 226                 return;
 227         }
 228 }
 229
 230 static int vpdrag;
 231
 232 static void mdl_mouse(int bn, int press, int x, int y)
 233 {
 234         if(!vpdrag && rtk_input_mbutton(toolbar, bn, press, x, y)) {
 235                 app_redisplay();
 236                 return;
 237         }
 238
 239         if(press) {
 240                 vpdrag |= (1 << bn);
 241         } else {
 242                 vpdrag &= ~(1 << bn);
 243         }
 244 }
 245
 246 static void mdl_motion(int x, int y)
 247 {
 248         int dx, dy;
 249
 250         if(!vpdrag && rtk_input_mmotion(toolbar, x, y)) {
 251                 app_redisplay();
 252                 return;
 253         }
 254
 255         dx = x - mouse_x;
 256         dy = y - mouse_y;
 257
 258         if((dx | dy) == 0) return;
 259
 260         if(mouse_state[0]) {
 261                 cam_theta += dx * 0.5f;
 262                 cam_phi += dy * 0.5f;
 263                 if(cam_phi < -90) cam_phi = -90;
 264                 if(cam_phi > 90) cam_phi = 90;
 265                 app_redisplay();
 266         }
 267
 268         if(mouse_state[2]) {
 269                 cam_dist += dy * 0.1f;
 270                 if(cam_dist < 0) cam_dist = 0;
 271                 app_redisplay();
 272         }
 273 }
 274
 275 static void add_sphere(void)
 276 {
 277         struct object *obj;
 278
 279         if(!(obj = create_object(OBJ_SPHERE))) {
 280                 return;
 281         }
 282         scn_add_object(scn, obj);
 283 }
 284
 285 static void tbn_callback(rtk_widget *w, void *cls)
 286 {
 287         int id = (intptr_t)cls;
 288
 289         switch(id) {
 290         case TBN_ADD:
 291                 add_sphere();
 292                 break;
 293
 294         default:
 295                 break;
 296         }
 297 }