goat3d

annotate goatview/src/goatview.cc @ 90:8b156bc5205b

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[maxgoat] fixed the transform export bug [goatview] added widgets for the animation controls [goatview] added a grid ground plane with automatic sizing and transitions from size to size
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 17 May 2014 06:26:24 +0300
parents 7941e89798e5
children ae6c5941faac
rev   line source
nuclear@78 1 #include <stdio.h>
nuclear@85 2 #include <map>
nuclear@82 3 #include "opengl.h"
nuclear@76 4 #include <QtOpenGL/QtOpenGL>
nuclear@76 5 #include <vmath/vmath.h>
nuclear@73 6 #include "goatview.h"
nuclear@74 7 #include "goat3d.h"
nuclear@74 8
nuclear@90 9 static void draw_grid();
nuclear@90 10 static void draw_grid(float sz, int nlines, float alpha = 1.0f);
nuclear@78 11 static void draw_node(goat3d_node *node);
nuclear@82 12 static void draw_mesh(goat3d_mesh *mesh);
nuclear@90 13 static int next_pow2(int x);
nuclear@78 14
nuclear@74 15 goat3d *scene;
nuclear@85 16 static SceneModel *sdata;
nuclear@88 17 static GoatViewport *glview;
nuclear@75 18
nuclear@75 19 static long anim_time;
nuclear@90 20 static float cam_theta, cam_phi = 25, cam_dist = 8;
nuclear@76 21 static float fov = 60.0;
nuclear@82 22 static bool use_nodes = true;
nuclear@83 23 static bool use_lighting = true;
nuclear@75 24
nuclear@88 25 void post_redisplay()
nuclear@88 26 {
nuclear@90 27 if(glview) {
nuclear@90 28 glview->updateGL();
nuclear@90 29 }
nuclear@88 30 }
nuclear@88 31
nuclear@82 32
nuclear@82 33 GoatView::GoatView()
nuclear@82 34 {
nuclear@82 35 glview = 0;
nuclear@85 36 scene_model = 0;
nuclear@82 37
nuclear@84 38 QSettings settings;
nuclear@84 39 resize(settings.value("main/size", QSize(1024, 768)).toSize());
nuclear@84 40 move(settings.value("main/pos", QPoint(100, 100)).toPoint());
nuclear@84 41 use_nodes = settings.value("use_nodes", true).toBool();
nuclear@84 42 use_lighting = settings.value("use_lighting", true).toBool();
nuclear@83 43
nuclear@83 44 make_center(); // must be first
nuclear@82 45 make_menu();
nuclear@82 46 make_dock();
nuclear@82 47
nuclear@82 48 statusBar();
nuclear@82 49
nuclear@82 50 setWindowTitle("GoatView");
nuclear@82 51 }
nuclear@82 52
nuclear@82 53 GoatView::~GoatView()
nuclear@82 54 {
nuclear@85 55 delete scene_model;
nuclear@85 56 sdata = 0;
nuclear@82 57 }
nuclear@82 58
nuclear@83 59 void GoatView::closeEvent(QCloseEvent *ev)
nuclear@83 60 {
nuclear@84 61 QSettings settings;
nuclear@84 62 settings.setValue("main/size", size());
nuclear@84 63 settings.setValue("main/pos", pos());
nuclear@84 64 settings.setValue("use_nodes", use_nodes);
nuclear@84 65 settings.setValue("use_lighting", use_lighting);
nuclear@83 66 }
nuclear@83 67
nuclear@83 68
nuclear@82 69 bool GoatView::load_scene(const char *fname)
nuclear@76 70 {
nuclear@76 71 if(scene) {
nuclear@76 72 goat3d_free(scene);
nuclear@76 73 }
nuclear@76 74 if(!(scene = goat3d_create()) || goat3d_load(scene, fname) == -1) {
nuclear@76 75 return false;
nuclear@76 76 }
nuclear@76 77
nuclear@76 78 float bmin[3], bmax[3];
nuclear@82 79 if(goat3d_get_bounds(scene, bmin, bmax) != -1) {
nuclear@82 80 float bsize = (Vector3(bmax[0], bmax[1], bmax[2]) - Vector3(bmin[0], bmin[1], bmin[2])).length();
nuclear@83 81 cam_dist = bsize / tan(DEG_TO_RAD(fov) / 2.0);
nuclear@82 82 printf("bounds size: %f, cam_dist: %f\n", bsize, cam_dist);
nuclear@82 83 }
nuclear@76 84
nuclear@85 85 scene_model->set_scene(scene);
nuclear@85 86 treeview->expandAll();
nuclear@85 87 treeview->resizeColumnToContents(0);
nuclear@85 88
nuclear@85 89 sdata = scene_model; // set the global sdata ptr
nuclear@76 90 return true;
nuclear@76 91 }
nuclear@73 92
nuclear@73 93 bool GoatView::make_menu()
nuclear@73 94 {
nuclear@82 95 // file menu
nuclear@73 96 QMenu *menu_file = menuBar()->addMenu("&File");
nuclear@73 97
nuclear@73 98 QAction *act_open_sce = new QAction("&Open Scene", this);
nuclear@73 99 act_open_sce->setShortcuts(QKeySequence::Open);
nuclear@73 100 connect(act_open_sce, &QAction::triggered, this, &GoatView::open_scene);
nuclear@73 101 menu_file->addAction(act_open_sce);
nuclear@73 102
nuclear@73 103 QAction *act_open_anm = new QAction("Open &Animation", this);
nuclear@73 104 connect(act_open_anm, &QAction::triggered, this, &GoatView::open_anim);
nuclear@73 105 menu_file->addAction(act_open_anm);
nuclear@73 106
nuclear@73 107 QAction *act_quit = new QAction("&Quit", this);
nuclear@73 108 act_quit->setShortcuts(QKeySequence::Quit);
nuclear@90 109 connect(act_quit, &QAction::triggered, [&](){ qApp->quit(); });
nuclear@73 110 menu_file->addAction(act_quit);
nuclear@82 111
nuclear@82 112 // view menu
nuclear@82 113 QMenu *menu_view = menuBar()->addMenu("&View");
nuclear@82 114
nuclear@82 115 QAction *act_use_nodes = new QAction("use nodes", this);
nuclear@82 116 act_use_nodes->setCheckable(true);
nuclear@82 117 act_use_nodes->setChecked(use_nodes);
nuclear@83 118 connect(act_use_nodes, &QAction::triggered, this,
nuclear@88 119 [&](){ use_nodes = !use_nodes; post_redisplay(); });
nuclear@82 120 menu_view->addAction(act_use_nodes);
nuclear@83 121
nuclear@83 122 QAction *act_use_lighting = new QAction("lighting", this);
nuclear@83 123 act_use_lighting->setCheckable(true);
nuclear@83 124 act_use_lighting->setChecked(use_lighting);
nuclear@83 125 connect(act_use_lighting, &QAction::triggered, glview, &GoatViewport::toggle_lighting);
nuclear@83 126 menu_view->addAction(act_use_lighting);
nuclear@83 127
nuclear@83 128 // help menu
nuclear@83 129 QMenu *menu_help = menuBar()->addMenu("&Help");
nuclear@83 130
nuclear@83 131 QAction *act_about = new QAction("&About", this);
nuclear@83 132 connect(act_about, &QAction::triggered, this, &GoatView::show_about);
nuclear@83 133 menu_help->addAction(act_about);
nuclear@73 134 return true;
nuclear@73 135 }
nuclear@73 136
nuclear@73 137 bool GoatView::make_dock()
nuclear@73 138 {
nuclear@73 139 // ---- side-dock ----
nuclear@73 140 QWidget *dock_cont = new QWidget;
nuclear@73 141 QVBoxLayout *dock_vbox = new QVBoxLayout;
nuclear@73 142 dock_cont->setLayout(dock_vbox);
nuclear@73 143
nuclear@90 144 QDockWidget *dock = new QDockWidget(this);
nuclear@73 145 dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
nuclear@73 146 dock->setWidget(dock_cont);
nuclear@73 147 addDockWidget(Qt::LeftDockWidgetArea, dock);
nuclear@73 148
nuclear@82 149 // make the tree view widget
nuclear@85 150 treeview = new QTreeView;
nuclear@85 151 treeview->setAlternatingRowColors(true);
nuclear@88 152 treeview->setSelectionMode(QAbstractItemView::SingleSelection);
nuclear@85 153 dock_vbox->addWidget(treeview);
nuclear@82 154
nuclear@85 155 scene_model = new SceneModel;
nuclear@88 156 connect(scene_model, &SceneModel::dataChanged, [&](){ post_redisplay(); });
nuclear@85 157 treeview->setModel(scene_model);
nuclear@82 158
nuclear@88 159 connect(treeview->selectionModel(), &QItemSelectionModel::selectionChanged,
nuclear@88 160 [&](){ scene_model->selchange(treeview->selectionModel()->selectedIndexes()); });
nuclear@88 161
nuclear@82 162 // misc
nuclear@82 163 QPushButton *bn_quit = new QPushButton("quit");
nuclear@82 164 dock_vbox->addWidget(bn_quit);
nuclear@85 165 connect(bn_quit, &QPushButton::clicked, [&](){ qApp->quit(); });
nuclear@82 166
nuclear@73 167 // ---- bottom dock ----
nuclear@73 168 dock_cont = new QWidget;
nuclear@73 169 QHBoxLayout *dock_hbox = new QHBoxLayout;
nuclear@73 170 dock_cont->setLayout(dock_hbox);
nuclear@73 171
nuclear@90 172 // animation control box
nuclear@90 173 QGridLayout *anim_ctl_box = new QGridLayout;
nuclear@90 174 dock_hbox->addLayout(anim_ctl_box);
nuclear@90 175
nuclear@90 176 anim_ctl_box->addWidget(new QLabel("Animation"), 0, 0);
nuclear@90 177 cbox_anims = new QComboBox;
nuclear@90 178 cbox_anims->setDisabled(true);
nuclear@90 179 anim_ctl_box->addWidget(cbox_anims, 0, 1);
nuclear@90 180
nuclear@90 181 chk_loop = new QCheckBox("loop");
nuclear@90 182 chk_loop->setChecked(false);
nuclear@90 183 anim_ctl_box->addWidget(chk_loop, 1, 0);
nuclear@90 184
nuclear@90 185 QToolBar *toolbar_ctl = new QToolBar;
nuclear@90 186 anim_ctl_box->addWidget(toolbar_ctl, 1, 1);
nuclear@90 187
nuclear@90 188 act_rewind = new QAction(style()->standardIcon(QStyle::SP_MediaSkipBackward), "Rewind", this);
nuclear@90 189 act_rewind->setDisabled(true);
nuclear@90 190 toolbar_ctl->addAction(act_rewind);
nuclear@90 191 act_play = new QAction(style()->standardIcon(QStyle::SP_MediaPlay), "Play", this);
nuclear@90 192 act_play->setDisabled(true);
nuclear@90 193 toolbar_ctl->addAction(act_play);
nuclear@90 194
nuclear@90 195 // timeline slider
nuclear@90 196 slider_time = new QSlider(Qt::Orientation::Horizontal);
nuclear@73 197 slider_time->setDisabled(true);
nuclear@90 198 connect(slider_time, &QSlider::valueChanged,
nuclear@90 199 [&](){ anim_time = slider_time->value(); post_redisplay(); });
nuclear@73 200 dock_hbox->addWidget(slider_time);
nuclear@73 201
nuclear@90 202 dock = new QDockWidget(this);
nuclear@73 203 dock->setAllowedAreas(Qt::BottomDockWidgetArea);
nuclear@73 204 dock->setWidget(dock_cont);
nuclear@73 205 addDockWidget(Qt::BottomDockWidgetArea, dock);
nuclear@73 206
nuclear@73 207 return true;
nuclear@73 208 }
nuclear@73 209
nuclear@73 210 bool GoatView::make_center()
nuclear@73 211 {
nuclear@88 212 glview = ::glview = new GoatViewport(this);
nuclear@82 213 setCentralWidget(glview);
nuclear@73 214 return true;
nuclear@73 215 }
nuclear@73 216
nuclear@73 217 void GoatView::open_scene()
nuclear@73 218 {
nuclear@74 219 std::string fname = QFileDialog::getOpenFileName(this, "Open scene file", "",
nuclear@74 220 "Goat3D Scene (*.goatsce);;All Files (*)").toStdString();
nuclear@74 221 if(fname.empty()) {
nuclear@74 222 statusBar()->showMessage("Abort: No file selected!");
nuclear@74 223 return;
nuclear@74 224 }
nuclear@74 225
nuclear@74 226 statusBar()->showMessage("opening scene file");
nuclear@76 227 if(!load_scene(fname.c_str())) {
nuclear@74 228 statusBar()->showMessage("failed to load scene file");
nuclear@74 229 }
nuclear@73 230 }
nuclear@73 231
nuclear@73 232 void GoatView::open_anim()
nuclear@73 233 {
nuclear@73 234 statusBar()->showMessage("opening animation...");
nuclear@73 235 }
nuclear@73 236
nuclear@73 237
nuclear@73 238 // ---- OpenGL viewport ----
nuclear@82 239 GoatViewport::GoatViewport(QWidget *main_win)
nuclear@73 240 : QGLWidget(QGLFormat(QGL::DepthBuffer))
nuclear@73 241 {
nuclear@82 242 this->main_win = main_win;
nuclear@82 243 initialized = false;
nuclear@73 244 }
nuclear@73 245
nuclear@73 246 GoatViewport::~GoatViewport()
nuclear@73 247 {
nuclear@73 248 }
nuclear@73 249
nuclear@73 250 QSize GoatViewport::sizeHint() const
nuclear@73 251 {
nuclear@73 252 return QSize(800, 600);
nuclear@73 253 }
nuclear@73 254
nuclear@82 255 #define CRITICAL(error, detail) \
nuclear@82 256 do { \
nuclear@82 257 fprintf(stderr, "%s: %s\n", error, detail); \
nuclear@82 258 QMessageBox::critical(main_win, error, detail); \
nuclear@82 259 abort(); \
nuclear@82 260 } while(0)
nuclear@82 261
nuclear@73 262 void GoatViewport::initializeGL()
nuclear@73 263 {
nuclear@82 264 if(initialized) return;
nuclear@82 265 initialized = true;
nuclear@82 266
nuclear@79 267 init_opengl();
nuclear@79 268
nuclear@82 269 if(!GLEW_ARB_transpose_matrix) {
nuclear@82 270 CRITICAL("OpenGL initialization failed", "ARB_transpose_matrix extension not found!");
nuclear@82 271 }
nuclear@82 272
nuclear@79 273 glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
nuclear@78 274
nuclear@78 275 glEnable(GL_DEPTH_TEST);
nuclear@78 276 glEnable(GL_CULL_FACE);
nuclear@83 277 if(use_lighting) {
nuclear@83 278 glEnable(GL_LIGHTING);
nuclear@83 279 }
nuclear@83 280 glEnable(GL_LIGHT0);
nuclear@83 281
nuclear@83 282 float ldir[] = {-1, 1, 2, 0};
nuclear@83 283 glLightfv(GL_LIGHT0, GL_POSITION, ldir);
nuclear@73 284 }
nuclear@73 285
nuclear@73 286 void GoatViewport::resizeGL(int xsz, int ysz)
nuclear@73 287 {
nuclear@73 288 glViewport(0, 0, xsz, ysz);
nuclear@75 289 glMatrixMode(GL_PROJECTION);
nuclear@75 290 glLoadIdentity();
nuclear@75 291 gluPerspective(60.0, (float)xsz / (float)ysz, 0.5, 5000.0);
nuclear@73 292 }
nuclear@73 293
nuclear@73 294 void GoatViewport::paintGL()
nuclear@73 295 {
nuclear@75 296 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@75 297
nuclear@75 298 glMatrixMode(GL_MODELVIEW);
nuclear@75 299 glLoadIdentity();
nuclear@75 300 glTranslatef(0, 0, -cam_dist);
nuclear@75 301 glRotatef(cam_phi, 1, 0, 0);
nuclear@75 302 glRotatef(cam_theta, 0, 1, 0);
nuclear@75 303
nuclear@90 304 draw_grid();
nuclear@90 305
nuclear@82 306 if(!scene) return;
nuclear@82 307
nuclear@82 308 if(use_nodes) {
nuclear@75 309 int node_count = goat3d_get_node_count(scene);
nuclear@75 310 for(int i=0; i<node_count; i++) {
nuclear@75 311 goat3d_node *node = goat3d_get_node(scene, i);
nuclear@83 312 if(!goat3d_get_node_parent(node)) {
nuclear@83 313 draw_node(node); // only draw root nodes, the rest will be drawn recursively
nuclear@83 314 }
nuclear@82 315 }
nuclear@82 316 } else {
nuclear@82 317 int mesh_count = goat3d_get_mesh_count(scene);
nuclear@82 318 for(int i=0; i<mesh_count; i++) {
nuclear@82 319 goat3d_mesh *mesh = goat3d_get_mesh(scene, i);
nuclear@82 320 draw_mesh(mesh);
nuclear@75 321 }
nuclear@75 322 }
nuclear@73 323 }
nuclear@75 324
nuclear@83 325 void GoatViewport::toggle_lighting()
nuclear@83 326 {
nuclear@83 327 use_lighting = !use_lighting;
nuclear@83 328 if(use_lighting) {
nuclear@83 329 glEnable(GL_LIGHTING);
nuclear@83 330 } else {
nuclear@83 331 glDisable(GL_LIGHTING);
nuclear@83 332 }
nuclear@83 333 updateGL();
nuclear@83 334 }
nuclear@83 335
nuclear@82 336 #ifndef GLEW_ARB_transpose_matrix
nuclear@82 337 #error "GLEW_ARB_transpose_matrix undefined?"
nuclear@82 338 #endif
nuclear@82 339
nuclear@90 340 static void draw_grid()
nuclear@90 341 {
nuclear@90 342 float viewsz_orig = cam_dist * tan(DEG_TO_RAD(fov) / 2.0);
nuclear@90 343 float sz1 = next_pow2((int)viewsz_orig);
nuclear@90 344 float sz0 = sz1 / 2.0;
nuclear@90 345 float t = (viewsz_orig - sz0) / (sz1 - sz0);
nuclear@90 346 float alpha = t < 0.333333 ? 0.0 : (t > 0.666666 ? 1.0 : (t - 0.333333) / 0.333333);
nuclear@90 347
nuclear@90 348 glPushAttrib(GL_ENABLE_BIT | GL_DEPTH_BITS);
nuclear@90 349
nuclear@90 350 glEnable(GL_BLEND);
nuclear@90 351 glDepthFunc(GL_ALWAYS);
nuclear@90 352
nuclear@90 353 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
nuclear@90 354 draw_grid(sz0 * 2.0, 10, 1.0 - alpha);
nuclear@90 355 draw_grid(sz1 * 2.0, 10, alpha);
nuclear@90 356
nuclear@90 357 glPopAttrib();
nuclear@90 358 }
nuclear@90 359
nuclear@90 360 static void draw_grid(float sz, int nlines, float alpha)
nuclear@90 361 {
nuclear@90 362 float hsz = sz / 2.0;
nuclear@90 363 float offs = sz / (float)nlines;
nuclear@90 364
nuclear@90 365 glPushAttrib(GL_ENABLE_BIT);
nuclear@90 366 glDisable(GL_LIGHTING);
nuclear@90 367 glDisable(GL_TEXTURE_2D);
nuclear@90 368
nuclear@90 369 glLineWidth(2.0);
nuclear@90 370 glBegin(GL_LINES);
nuclear@90 371 glColor4f(1, 0, 0, alpha);
nuclear@90 372 glVertex3f(-hsz, 0, 0);
nuclear@90 373 glVertex3f(hsz, 0, 0);
nuclear@90 374 glColor4f(0, 0, 1, alpha);
nuclear@90 375 glVertex3f(0, 0, -hsz);
nuclear@90 376 glVertex3f(0, 0, hsz);
nuclear@90 377 glEnd();
nuclear@90 378
nuclear@90 379 glLineWidth(1.0);
nuclear@90 380 glBegin(GL_LINES);
nuclear@90 381 glColor4f(0.5, 0.5, 0.5, alpha);
nuclear@90 382 for(int i=0; i<nlines / 2; i++) {
nuclear@90 383 float dist = (float)(i + 1) * offs;
nuclear@90 384 for(int j=0; j<2; j++) {
nuclear@90 385 float sign = j > 0 ? -1.0 : 1.0;
nuclear@90 386 glVertex3f(-hsz, 0, dist * sign);
nuclear@90 387 glVertex3f(hsz, 0, dist * sign);
nuclear@90 388 glVertex3f(dist * sign, 0, -hsz);
nuclear@90 389 glVertex3f(dist * sign, 0, hsz);
nuclear@90 390 }
nuclear@90 391 }
nuclear@90 392 glEnd();
nuclear@90 393
nuclear@90 394 glPopAttrib();
nuclear@90 395 }
nuclear@90 396
nuclear@75 397 static void draw_node(goat3d_node *node)
nuclear@75 398 {
nuclear@85 399 SceneNodeData *data = sdata ? sdata->get_node_data(node) : 0;
nuclear@85 400 if(!data) return;
nuclear@85 401
nuclear@75 402 float xform[16];
nuclear@75 403 goat3d_get_node_matrix(node, xform, anim_time);
nuclear@78 404
nuclear@78 405 glPushMatrix();
nuclear@82 406 glMultTransposeMatrixf(xform);
nuclear@75 407
nuclear@85 408 if(data->visible) {
nuclear@85 409 if(goat3d_get_node_type(node) == GOAT3D_NODE_MESH) {
nuclear@85 410 goat3d_mesh *mesh = (goat3d_mesh*)goat3d_get_node_object(node);
nuclear@75 411
nuclear@85 412 draw_mesh(mesh);
nuclear@88 413
nuclear@88 414 if(data->selected) {
nuclear@88 415 float bmin[3], bmax[3];
nuclear@88 416 goat3d_get_mesh_bounds(mesh, bmin, bmax);
nuclear@88 417
nuclear@88 418 glPushAttrib(GL_ENABLE_BIT);
nuclear@88 419 glDisable(GL_LIGHTING);
nuclear@88 420
nuclear@88 421 glColor3f(0.3, 1, 0.2);
nuclear@88 422
nuclear@88 423 glBegin(GL_LINE_LOOP);
nuclear@88 424 glVertex3f(bmin[0], bmin[1], bmin[2]);
nuclear@88 425 glVertex3f(bmax[0], bmin[1], bmin[2]);
nuclear@88 426 glVertex3f(bmax[0], bmin[1], bmax[2]);
nuclear@88 427 glVertex3f(bmin[0], bmin[1], bmax[2]);
nuclear@88 428 glEnd();
nuclear@88 429 glBegin(GL_LINE_LOOP);
nuclear@88 430 glVertex3f(bmin[0], bmax[1], bmin[2]);
nuclear@88 431 glVertex3f(bmax[0], bmax[1], bmin[2]);
nuclear@88 432 glVertex3f(bmax[0], bmax[1], bmax[2]);
nuclear@88 433 glVertex3f(bmin[0], bmax[1], bmax[2]);
nuclear@88 434 glEnd();
nuclear@88 435 glBegin(GL_LINES);
nuclear@88 436 glVertex3f(bmin[0], bmin[1], bmin[2]);
nuclear@88 437 glVertex3f(bmin[0], bmax[1], bmin[2]);
nuclear@88 438 glVertex3f(bmin[0], bmin[1], bmax[2]);
nuclear@88 439 glVertex3f(bmin[0], bmax[1], bmax[2]);
nuclear@88 440 glVertex3f(bmax[0], bmin[1], bmin[2]);
nuclear@88 441 glVertex3f(bmax[0], bmax[1], bmin[2]);
nuclear@88 442 glVertex3f(bmax[0], bmin[1], bmax[2]);
nuclear@88 443 glVertex3f(bmax[0], bmax[1], bmax[2]);
nuclear@88 444 glEnd();
nuclear@88 445
nuclear@88 446 glPopAttrib();
nuclear@88 447 }
nuclear@85 448 }
nuclear@75 449 }
nuclear@75 450
nuclear@83 451 int num_child = goat3d_get_node_child_count(node);
nuclear@75 452 for(int i=0; i<num_child; i++) {
nuclear@75 453 draw_node(goat3d_get_node_child(node, i));
nuclear@83 454 }
nuclear@78 455
nuclear@78 456 glPopMatrix();
nuclear@78 457 }
nuclear@78 458
nuclear@82 459 static void draw_mesh(goat3d_mesh *mesh)
nuclear@82 460 {
nuclear@83 461 static const float white[] = {1, 1, 1, 1};
nuclear@83 462 static const float black[] = {0, 0, 0, 1};
nuclear@83 463
nuclear@83 464 const float *color;
nuclear@83 465 goat3d_material *mtl = goat3d_get_mesh_mtl(mesh);
nuclear@83 466
nuclear@83 467 if(mtl && (color = goat3d_get_mtl_attrib(mtl, GOAT3D_MAT_ATTR_DIFFUSE))) {
nuclear@83 468 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);
nuclear@90 469 glColor3fv(color);
nuclear@83 470 } else {
nuclear@83 471 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, white);
nuclear@90 472 glColor3fv(white);
nuclear@83 473 }
nuclear@83 474 if(mtl && (color = goat3d_get_mtl_attrib(mtl, GOAT3D_MAT_ATTR_SPECULAR))) {
nuclear@83 475 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
nuclear@83 476 } else {
nuclear@83 477 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
nuclear@83 478 }
nuclear@83 479 if(mtl && (color = goat3d_get_mtl_attrib(mtl, GOAT3D_MAT_ATTR_SHININESS))) {
nuclear@83 480 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, color[0]);
nuclear@83 481 } else {
nuclear@83 482 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 60.0);
nuclear@83 483 }
nuclear@83 484 // TODO texture
nuclear@83 485
nuclear@83 486
nuclear@82 487 int num_faces = goat3d_get_mesh_face_count(mesh);
nuclear@82 488 int num_verts = goat3d_get_mesh_attrib_count(mesh, GOAT3D_MESH_ATTR_VERTEX);
nuclear@82 489
nuclear@82 490 glEnableClientState(GL_VERTEX_ARRAY);
nuclear@82 491 glVertexPointer(3, GL_FLOAT, 0, goat3d_get_mesh_attribs(mesh, GOAT3D_MESH_ATTR_VERTEX));
nuclear@82 492
nuclear@82 493 float *data;
nuclear@82 494 if((data = (float*)goat3d_get_mesh_attribs(mesh, GOAT3D_MESH_ATTR_NORMAL))) {
nuclear@82 495 glEnableClientState(GL_NORMAL_ARRAY);
nuclear@82 496 glNormalPointer(GL_FLOAT, 0, data);
nuclear@82 497 }
nuclear@82 498 if((data = (float*)goat3d_get_mesh_attribs(mesh, GOAT3D_MESH_ATTR_TEXCOORD))) {
nuclear@82 499 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
nuclear@82 500 glTexCoordPointer(2, GL_FLOAT, 0, data);
nuclear@82 501 }
nuclear@82 502
nuclear@82 503 int *indices;
nuclear@82 504 if((indices = goat3d_get_mesh_faces(mesh))) {
nuclear@82 505 glDrawElements(GL_TRIANGLES, num_faces * 3, GL_UNSIGNED_INT, indices);
nuclear@82 506 } else {
nuclear@82 507 glDrawArrays(GL_TRIANGLES, 0, num_verts * 3);
nuclear@82 508 }
nuclear@82 509
nuclear@82 510 glDisableClientState(GL_VERTEX_ARRAY);
nuclear@82 511 glDisableClientState(GL_NORMAL_ARRAY);
nuclear@82 512 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
nuclear@82 513 }
nuclear@82 514
nuclear@78 515
nuclear@78 516 static float prev_x, prev_y;
nuclear@78 517 void GoatViewport::mousePressEvent(QMouseEvent *ev)
nuclear@78 518 {
nuclear@78 519 prev_x = ev->x();
nuclear@78 520 prev_y = ev->y();
nuclear@78 521 }
nuclear@78 522
nuclear@78 523 void GoatViewport::mouseMoveEvent(QMouseEvent *ev)
nuclear@78 524 {
nuclear@78 525 int dx = ev->x() - prev_x;
nuclear@78 526 int dy = ev->y() - prev_y;
nuclear@80 527 prev_x = ev->x();
nuclear@80 528 prev_y = ev->y();
nuclear@78 529
nuclear@78 530 if(!dx && !dy) return;
nuclear@78 531
nuclear@78 532 if(ev->buttons() & Qt::LeftButton) {
nuclear@78 533 cam_theta += dx * 0.5;
nuclear@78 534 cam_phi += dy * 0.5;
nuclear@78 535
nuclear@78 536 if(cam_phi < -90) cam_phi = -90;
nuclear@78 537 if(cam_phi > 90) cam_phi = 90;
nuclear@78 538 }
nuclear@78 539 if(ev->buttons() & Qt::RightButton) {
nuclear@78 540 cam_dist += dy * 0.1;
nuclear@78 541
nuclear@78 542 if(cam_dist < 0.0) cam_dist = 0.0;
nuclear@78 543 }
nuclear@78 544 updateGL();
nuclear@78 545 }
nuclear@83 546
nuclear@83 547 static const char *about_str =
nuclear@83 548 "GoatView - Goat3D scene file viewer<br>"
nuclear@83 549 "Copyright (C) 2014 John Tsiombikas &lt;<a href=\"mailto:nuclear@mutantstargoat.com\">nuclear@mutantstargoat.com</a>&gt;<br>"
nuclear@83 550 "<br>"
nuclear@83 551 "This program is free software: you can redistribute it and/or modify<br>"
nuclear@83 552 "it under the terms of the GNU General Public License as published by<br>"
nuclear@83 553 "the Free Software Foundation, either version 3 of the License, or<br>"
nuclear@83 554 "(at your option) any later version.<br>"
nuclear@83 555 "<br>"
nuclear@83 556 "This program is distributed in the hope that it will be useful,<br>"
nuclear@83 557 "but WITHOUT ANY WARRANTY; without even the implied warranty of<br>"
nuclear@83 558 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the<br>"
nuclear@83 559 "GNU General Public License for more details.<br>"
nuclear@83 560 "<br>"
nuclear@83 561 "You should have received a copy of the GNU General Public License<br>"
nuclear@83 562 "along with this program. If not, see <a href=\"http://www.gnu.org/licenses/gpl\">http://www.gnu.org/licenses/gpl</a>.";
nuclear@83 563
nuclear@83 564 void GoatView::show_about()
nuclear@83 565 {
nuclear@83 566 QMessageBox::information(this, "About GoatView", about_str);
nuclear@83 567 }
nuclear@90 568
nuclear@90 569
nuclear@90 570 static int next_pow2(int x)
nuclear@90 571 {
nuclear@90 572 x--;
nuclear@90 573 x = (x >> 1) | x;
nuclear@90 574 x = (x >> 2) | x;
nuclear@90 575 x = (x >> 4) | x;
nuclear@90 576 x = (x >> 8) | x;
nuclear@90 577 x = (x >> 16) | x;
nuclear@90 578 return x + 1;
nuclear@90 579 }