goat3d

annotate goatview/src/goatview.cc @ 96:20b04b4edad4

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[goat3d] removed C++11-ism from libgoat3d
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 19 May 2014 06:46:30 +0300
parents 21319e71117f
children 32dccb16678f b43d33f3ba69
rev   line source
nuclear@78 1 #include <stdio.h>
nuclear@95 2 #include <limits.h>
nuclear@85 3 #include <map>
nuclear@82 4 #include "opengl.h"
nuclear@76 5 #include <QtOpenGL/QtOpenGL>
nuclear@76 6 #include <vmath/vmath.h>
nuclear@73 7 #include "goatview.h"
nuclear@74 8 #include "goat3d.h"
nuclear@74 9
nuclear@90 10 static void draw_grid();
nuclear@90 11 static void draw_grid(float sz, int nlines, float alpha = 1.0f);
nuclear@78 12 static void draw_node(goat3d_node *node);
nuclear@82 13 static void draw_mesh(goat3d_mesh *mesh);
nuclear@90 14 static int next_pow2(int x);
nuclear@78 15
nuclear@74 16 goat3d *scene;
nuclear@85 17 static SceneModel *sdata;
nuclear@88 18 static GoatViewport *glview;
nuclear@75 19
nuclear@75 20 static long anim_time;
nuclear@90 21 static float cam_theta, cam_phi = 25, cam_dist = 8;
nuclear@76 22 static float fov = 60.0;
nuclear@82 23 static bool use_nodes = true;
nuclear@83 24 static bool use_lighting = true;
nuclear@92 25 static bool use_textures = true;
nuclear@75 26
nuclear@88 27 void post_redisplay()
nuclear@88 28 {
nuclear@90 29 if(glview) {
nuclear@90 30 glview->updateGL();
nuclear@90 31 }
nuclear@88 32 }
nuclear@88 33
nuclear@82 34
nuclear@82 35 GoatView::GoatView()
nuclear@82 36 {
nuclear@82 37 glview = 0;
nuclear@85 38 scene_model = 0;
nuclear@82 39
nuclear@92 40 QGLFormat glfmt = QGLFormat::defaultFormat();
nuclear@92 41 glfmt.setSampleBuffers(true);
nuclear@92 42 QGLFormat::setDefaultFormat(glfmt);
nuclear@92 43
nuclear@84 44 QSettings settings;
nuclear@84 45 resize(settings.value("main/size", QSize(1024, 768)).toSize());
nuclear@84 46 move(settings.value("main/pos", QPoint(100, 100)).toPoint());
nuclear@84 47 use_nodes = settings.value("use_nodes", true).toBool();
nuclear@84 48 use_lighting = settings.value("use_lighting", true).toBool();
nuclear@92 49 use_textures = settings.value("use_textures", true).toBool();
nuclear@83 50
nuclear@83 51 make_center(); // must be first
nuclear@82 52 make_menu();
nuclear@82 53 make_dock();
nuclear@82 54
nuclear@82 55 statusBar();
nuclear@82 56
nuclear@82 57 setWindowTitle("GoatView");
nuclear@82 58 }
nuclear@82 59
nuclear@82 60 GoatView::~GoatView()
nuclear@82 61 {
nuclear@85 62 delete scene_model;
nuclear@85 63 sdata = 0;
nuclear@82 64 }
nuclear@82 65
nuclear@83 66 void GoatView::closeEvent(QCloseEvent *ev)
nuclear@83 67 {
nuclear@84 68 QSettings settings;
nuclear@84 69 settings.setValue("main/size", size());
nuclear@84 70 settings.setValue("main/pos", pos());
nuclear@84 71 settings.setValue("use_nodes", use_nodes);
nuclear@84 72 settings.setValue("use_lighting", use_lighting);
nuclear@83 73 }
nuclear@83 74
nuclear@83 75
nuclear@82 76 bool GoatView::load_scene(const char *fname)
nuclear@76 77 {
nuclear@76 78 if(scene) {
nuclear@76 79 goat3d_free(scene);
nuclear@76 80 }
nuclear@76 81 if(!(scene = goat3d_create()) || goat3d_load(scene, fname) == -1) {
nuclear@95 82 QMessageBox::critical(this, "Error", "Failed to load scene file: " + QString(fname));
nuclear@76 83 return false;
nuclear@76 84 }
nuclear@76 85
nuclear@76 86 float bmin[3], bmax[3];
nuclear@82 87 if(goat3d_get_bounds(scene, bmin, bmax) != -1) {
nuclear@82 88 float bsize = (Vector3(bmax[0], bmax[1], bmax[2]) - Vector3(bmin[0], bmin[1], bmin[2])).length();
nuclear@83 89 cam_dist = bsize / tan(DEG_TO_RAD(fov) / 2.0);
nuclear@82 90 printf("bounds size: %f, cam_dist: %f\n", bsize, cam_dist);
nuclear@82 91 }
nuclear@76 92
nuclear@85 93 scene_model->set_scene(scene);
nuclear@85 94 treeview->expandAll();
nuclear@85 95 treeview->resizeColumnToContents(0);
nuclear@85 96
nuclear@85 97 sdata = scene_model; // set the global sdata ptr
nuclear@93 98 post_redisplay();
nuclear@76 99 return true;
nuclear@76 100 }
nuclear@73 101
nuclear@95 102 bool GoatView::load_anim(const char *fname)
nuclear@95 103 {
nuclear@95 104 if(!scene) {
nuclear@95 105 QMessageBox::critical(this, "Error", "You must load a scene before loading any animations!");
nuclear@95 106 return false;
nuclear@95 107 }
nuclear@95 108
nuclear@95 109 if(goat3d_load_anim(scene, fname) == -1) {
nuclear@95 110 QMessageBox::critical(this, "Error", QString("Failed to load animation: ") + QString(fname));
nuclear@95 111 return false;
nuclear@95 112 }
nuclear@95 113
nuclear@95 114
nuclear@95 115 long tstart = LONG_MAX, tend = LONG_MIN;
nuclear@95 116 int num_nodes = goat3d_get_node_count(scene);
nuclear@95 117 for(int i=0; i<num_nodes; i++) {
nuclear@95 118 goat3d_node *node = goat3d_get_node(scene, i);
nuclear@95 119 if(goat3d_get_node_parent(node)) {
nuclear@95 120 continue;
nuclear@95 121 }
nuclear@95 122
nuclear@95 123 long t0, t1;
nuclear@95 124 if(goat3d_get_anim_timeline(node, &t0, &t1) != -1) {
nuclear@95 125 if(t0 < tstart) tstart = t0;
nuclear@95 126 if(t1 > tend) tend = t1;
nuclear@95 127 }
nuclear@95 128 }
nuclear@95 129
nuclear@95 130 if(tstart != LONG_MAX) {
nuclear@95 131 act_play->setDisabled(false);
nuclear@95 132 act_rewind->setDisabled(false);
nuclear@95 133 chk_loop->setDisabled(false);
nuclear@95 134
nuclear@95 135 slider_time->setDisabled(false);
nuclear@95 136 slider_time->setMinimum(tstart);
nuclear@95 137 slider_time->setMaximum(tend);
nuclear@95 138
nuclear@95 139 spin_time->setDisabled(false);
nuclear@95 140 spin_time->setMinimum(tstart);
nuclear@95 141 spin_time->setMaximum(tend);
nuclear@95 142 }
nuclear@95 143
nuclear@95 144 post_redisplay();
nuclear@95 145 return true;
nuclear@95 146 }
nuclear@95 147
nuclear@73 148 bool GoatView::make_menu()
nuclear@73 149 {
nuclear@82 150 // file menu
nuclear@73 151 QMenu *menu_file = menuBar()->addMenu("&File");
nuclear@73 152
nuclear@73 153 QAction *act_open_sce = new QAction("&Open Scene", this);
nuclear@73 154 act_open_sce->setShortcuts(QKeySequence::Open);
nuclear@73 155 connect(act_open_sce, &QAction::triggered, this, &GoatView::open_scene);
nuclear@73 156 menu_file->addAction(act_open_sce);
nuclear@73 157
nuclear@73 158 QAction *act_open_anm = new QAction("Open &Animation", this);
nuclear@73 159 connect(act_open_anm, &QAction::triggered, this, &GoatView::open_anim);
nuclear@73 160 menu_file->addAction(act_open_anm);
nuclear@73 161
nuclear@73 162 QAction *act_quit = new QAction("&Quit", this);
nuclear@73 163 act_quit->setShortcuts(QKeySequence::Quit);
nuclear@90 164 connect(act_quit, &QAction::triggered, [&](){ qApp->quit(); });
nuclear@73 165 menu_file->addAction(act_quit);
nuclear@82 166
nuclear@82 167 // view menu
nuclear@82 168 QMenu *menu_view = menuBar()->addMenu("&View");
nuclear@82 169
nuclear@82 170 QAction *act_use_nodes = new QAction("use nodes", this);
nuclear@82 171 act_use_nodes->setCheckable(true);
nuclear@82 172 act_use_nodes->setChecked(use_nodes);
nuclear@83 173 connect(act_use_nodes, &QAction::triggered, this,
nuclear@88 174 [&](){ use_nodes = !use_nodes; post_redisplay(); });
nuclear@82 175 menu_view->addAction(act_use_nodes);
nuclear@83 176
nuclear@83 177 QAction *act_use_lighting = new QAction("lighting", this);
nuclear@83 178 act_use_lighting->setCheckable(true);
nuclear@83 179 act_use_lighting->setChecked(use_lighting);
nuclear@83 180 connect(act_use_lighting, &QAction::triggered, glview, &GoatViewport::toggle_lighting);
nuclear@83 181 menu_view->addAction(act_use_lighting);
nuclear@83 182
nuclear@83 183 // help menu
nuclear@83 184 QMenu *menu_help = menuBar()->addMenu("&Help");
nuclear@83 185
nuclear@83 186 QAction *act_about = new QAction("&About", this);
nuclear@83 187 connect(act_about, &QAction::triggered, this, &GoatView::show_about);
nuclear@83 188 menu_help->addAction(act_about);
nuclear@73 189 return true;
nuclear@73 190 }
nuclear@73 191
nuclear@73 192 bool GoatView::make_dock()
nuclear@73 193 {
nuclear@73 194 // ---- side-dock ----
nuclear@73 195 QWidget *dock_cont = new QWidget;
nuclear@73 196 QVBoxLayout *dock_vbox = new QVBoxLayout;
nuclear@73 197 dock_cont->setLayout(dock_vbox);
nuclear@73 198
nuclear@90 199 QDockWidget *dock = new QDockWidget(this);
nuclear@73 200 dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
nuclear@73 201 dock->setWidget(dock_cont);
nuclear@73 202 addDockWidget(Qt::LeftDockWidgetArea, dock);
nuclear@73 203
nuclear@82 204 // make the tree view widget
nuclear@85 205 treeview = new QTreeView;
nuclear@85 206 treeview->setAlternatingRowColors(true);
nuclear@88 207 treeview->setSelectionMode(QAbstractItemView::SingleSelection);
nuclear@85 208 dock_vbox->addWidget(treeview);
nuclear@82 209
nuclear@85 210 scene_model = new SceneModel;
nuclear@88 211 connect(scene_model, &SceneModel::dataChanged, [&](){ post_redisplay(); });
nuclear@85 212 treeview->setModel(scene_model);
nuclear@82 213
nuclear@88 214 connect(treeview->selectionModel(), &QItemSelectionModel::selectionChanged,
nuclear@88 215 [&](){ scene_model->selchange(treeview->selectionModel()->selectedIndexes()); });
nuclear@88 216
nuclear@82 217 // misc
nuclear@82 218 QPushButton *bn_quit = new QPushButton("quit");
nuclear@82 219 dock_vbox->addWidget(bn_quit);
nuclear@85 220 connect(bn_quit, &QPushButton::clicked, [&](){ qApp->quit(); });
nuclear@82 221
nuclear@73 222 // ---- bottom dock ----
nuclear@73 223 dock_cont = new QWidget;
nuclear@73 224 QHBoxLayout *dock_hbox = new QHBoxLayout;
nuclear@73 225 dock_cont->setLayout(dock_hbox);
nuclear@73 226
nuclear@90 227 // animation control box
nuclear@95 228 QGroupBox *grp_anim_ctl = new QGroupBox("Animation controls");
nuclear@95 229 // TODO figure out how these fucking stretching policies work...
nuclear@95 230 //grp_anim_ctl->sizePolicy().setHorizontalPolicy(QSizePolicy::Maximum);
nuclear@95 231 grp_anim_ctl->sizePolicy().setHorizontalStretch(1);
nuclear@95 232 dock_hbox->addWidget(grp_anim_ctl);
nuclear@90 233
nuclear@95 234 QVBoxLayout *anim_ctl_box = new QVBoxLayout;
nuclear@95 235 grp_anim_ctl->setLayout(anim_ctl_box);
nuclear@90 236
nuclear@90 237 chk_loop = new QCheckBox("loop");
nuclear@95 238 chk_loop->setDisabled(true);
nuclear@90 239 chk_loop->setChecked(false);
nuclear@95 240 anim_ctl_box->addWidget(chk_loop);
nuclear@90 241
nuclear@90 242 QToolBar *toolbar_ctl = new QToolBar;
nuclear@95 243 anim_ctl_box->addWidget(toolbar_ctl);
nuclear@90 244
nuclear@90 245 act_rewind = new QAction(style()->standardIcon(QStyle::SP_MediaSkipBackward), "Rewind", this);
nuclear@90 246 act_rewind->setDisabled(true);
nuclear@95 247 connect(act_rewind, &QAction::triggered, [this](){ slider_time->setValue(slider_time->minimum()); });
nuclear@90 248 toolbar_ctl->addAction(act_rewind);
nuclear@95 249
nuclear@90 250 act_play = new QAction(style()->standardIcon(QStyle::SP_MediaPlay), "Play", this);
nuclear@90 251 act_play->setDisabled(true);
nuclear@90 252 toolbar_ctl->addAction(act_play);
nuclear@90 253
nuclear@95 254 // slider and spinbox
nuclear@95 255 QWidget *ssgroup = new QWidget;
nuclear@95 256 ssgroup->sizePolicy().setHorizontalStretch(4);
nuclear@95 257 dock_hbox->addWidget(ssgroup);
nuclear@95 258
nuclear@95 259 QGridLayout *ssgrid = new QGridLayout;
nuclear@95 260 //dock_hbox->addLayout(ssgrid);
nuclear@95 261 ssgroup->setLayout(ssgrid);
nuclear@95 262
nuclear@95 263 ssgrid->addWidget(new QLabel("msec"), 0, 0);
nuclear@95 264 spin_time = new QSpinBox;
nuclear@95 265 spin_time->setDisabled(true);
nuclear@95 266 ssgrid->addWidget(spin_time, 0, 1);
nuclear@95 267
nuclear@90 268 slider_time = new QSlider(Qt::Orientation::Horizontal);
nuclear@73 269 slider_time->setDisabled(true);
nuclear@95 270 ssgrid->addWidget(slider_time, 1, 0, 1, 3);
nuclear@95 271
nuclear@90 272 connect(slider_time, &QSlider::valueChanged,
nuclear@95 273 [&](){ anim_time = slider_time->value(); spin_time->setValue(anim_time); post_redisplay(); });
nuclear@95 274
nuclear@95 275 typedef void (QSpinBox::*ValueChangedIntFunc)(int);
nuclear@95 276 connect(spin_time, (ValueChangedIntFunc)&QSpinBox::valueChanged,
nuclear@95 277 [&](){ anim_time = spin_time->value(); slider_time->setValue(anim_time); post_redisplay(); });
nuclear@73 278
nuclear@90 279 dock = new QDockWidget(this);
nuclear@73 280 dock->setAllowedAreas(Qt::BottomDockWidgetArea);
nuclear@73 281 dock->setWidget(dock_cont);
nuclear@73 282 addDockWidget(Qt::BottomDockWidgetArea, dock);
nuclear@73 283
nuclear@73 284 return true;
nuclear@73 285 }
nuclear@73 286
nuclear@73 287 bool GoatView::make_center()
nuclear@73 288 {
nuclear@88 289 glview = ::glview = new GoatViewport(this);
nuclear@82 290 setCentralWidget(glview);
nuclear@73 291 return true;
nuclear@73 292 }
nuclear@73 293
nuclear@73 294 void GoatView::open_scene()
nuclear@73 295 {
nuclear@74 296 std::string fname = QFileDialog::getOpenFileName(this, "Open scene file", "",
nuclear@74 297 "Goat3D Scene (*.goatsce);;All Files (*)").toStdString();
nuclear@74 298 if(fname.empty()) {
nuclear@74 299 statusBar()->showMessage("Abort: No file selected!");
nuclear@74 300 return;
nuclear@74 301 }
nuclear@74 302
nuclear@74 303 statusBar()->showMessage("opening scene file");
nuclear@76 304 if(!load_scene(fname.c_str())) {
nuclear@74 305 statusBar()->showMessage("failed to load scene file");
nuclear@94 306 return;
nuclear@74 307 }
nuclear@95 308 statusBar()->showMessage("Successfully loaded scene: " + QString(fname.c_str()));
nuclear@73 309 }
nuclear@73 310
nuclear@73 311 void GoatView::open_anim()
nuclear@73 312 {
nuclear@94 313 std::string fname = QFileDialog::getOpenFileName(this, "Open animation file", "",
nuclear@94 314 "Goat3D Animation (*.goatanm);;All Files (*)").toStdString();
nuclear@94 315 if(fname.empty()) {
nuclear@94 316 statusBar()->showMessage("Abot: No file selected!");
nuclear@94 317 return;
nuclear@94 318 }
nuclear@94 319
nuclear@94 320 statusBar()->showMessage("opening animation file");
nuclear@94 321 if(!load_anim(fname.c_str())) {
nuclear@94 322 statusBar()->showMessage("failed to load animation file");
nuclear@94 323 return;
nuclear@94 324 }
nuclear@95 325 statusBar()->showMessage("Successfully loaded animation: " + QString(fname.c_str()));
nuclear@73 326 }
nuclear@73 327
nuclear@73 328
nuclear@73 329 // ---- OpenGL viewport ----
nuclear@82 330 GoatViewport::GoatViewport(QWidget *main_win)
nuclear@92 331 : QGLWidget(QGLFormat(QGL::DepthBuffer | QGL::SampleBuffers))
nuclear@73 332 {
nuclear@82 333 this->main_win = main_win;
nuclear@82 334 initialized = false;
nuclear@73 335 }
nuclear@73 336
nuclear@73 337 GoatViewport::~GoatViewport()
nuclear@73 338 {
nuclear@73 339 }
nuclear@73 340
nuclear@73 341 QSize GoatViewport::sizeHint() const
nuclear@73 342 {
nuclear@73 343 return QSize(800, 600);
nuclear@73 344 }
nuclear@73 345
nuclear@82 346 #define CRITICAL(error, detail) \
nuclear@82 347 do { \
nuclear@82 348 fprintf(stderr, "%s: %s\n", error, detail); \
nuclear@82 349 QMessageBox::critical(main_win, error, detail); \
nuclear@82 350 abort(); \
nuclear@82 351 } while(0)
nuclear@82 352
nuclear@73 353 void GoatViewport::initializeGL()
nuclear@73 354 {
nuclear@82 355 if(initialized) return;
nuclear@82 356 initialized = true;
nuclear@82 357
nuclear@79 358 init_opengl();
nuclear@79 359
nuclear@82 360 if(!GLEW_ARB_transpose_matrix) {
nuclear@82 361 CRITICAL("OpenGL initialization failed", "ARB_transpose_matrix extension not found!");
nuclear@82 362 }
nuclear@82 363
nuclear@79 364 glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
nuclear@78 365
nuclear@78 366 glEnable(GL_DEPTH_TEST);
nuclear@78 367 glEnable(GL_CULL_FACE);
nuclear@83 368 if(use_lighting) {
nuclear@83 369 glEnable(GL_LIGHTING);
nuclear@83 370 }
nuclear@83 371 glEnable(GL_LIGHT0);
nuclear@83 372
nuclear@83 373 float ldir[] = {-1, 1, 2, 0};
nuclear@83 374 glLightfv(GL_LIGHT0, GL_POSITION, ldir);
nuclear@92 375
nuclear@92 376 glEnable(GL_MULTISAMPLE);
nuclear@73 377 }
nuclear@73 378
nuclear@73 379 void GoatViewport::resizeGL(int xsz, int ysz)
nuclear@73 380 {
nuclear@73 381 glViewport(0, 0, xsz, ysz);
nuclear@75 382 glMatrixMode(GL_PROJECTION);
nuclear@75 383 glLoadIdentity();
nuclear@75 384 gluPerspective(60.0, (float)xsz / (float)ysz, 0.5, 5000.0);
nuclear@73 385 }
nuclear@73 386
nuclear@73 387 void GoatViewport::paintGL()
nuclear@73 388 {
nuclear@75 389 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@75 390
nuclear@75 391 glMatrixMode(GL_MODELVIEW);
nuclear@75 392 glLoadIdentity();
nuclear@75 393 glTranslatef(0, 0, -cam_dist);
nuclear@75 394 glRotatef(cam_phi, 1, 0, 0);
nuclear@75 395 glRotatef(cam_theta, 0, 1, 0);
nuclear@75 396
nuclear@90 397 draw_grid();
nuclear@90 398
nuclear@82 399 if(!scene) return;
nuclear@82 400
nuclear@82 401 if(use_nodes) {
nuclear@75 402 int node_count = goat3d_get_node_count(scene);
nuclear@75 403 for(int i=0; i<node_count; i++) {
nuclear@75 404 goat3d_node *node = goat3d_get_node(scene, i);
nuclear@83 405 if(!goat3d_get_node_parent(node)) {
nuclear@83 406 draw_node(node); // only draw root nodes, the rest will be drawn recursively
nuclear@83 407 }
nuclear@82 408 }
nuclear@82 409 } else {
nuclear@82 410 int mesh_count = goat3d_get_mesh_count(scene);
nuclear@82 411 for(int i=0; i<mesh_count; i++) {
nuclear@82 412 goat3d_mesh *mesh = goat3d_get_mesh(scene, i);
nuclear@82 413 draw_mesh(mesh);
nuclear@75 414 }
nuclear@75 415 }
nuclear@73 416 }
nuclear@75 417
nuclear@83 418 void GoatViewport::toggle_lighting()
nuclear@83 419 {
nuclear@83 420 use_lighting = !use_lighting;
nuclear@83 421 if(use_lighting) {
nuclear@83 422 glEnable(GL_LIGHTING);
nuclear@83 423 } else {
nuclear@83 424 glDisable(GL_LIGHTING);
nuclear@83 425 }
nuclear@83 426 updateGL();
nuclear@83 427 }
nuclear@83 428
nuclear@82 429 #ifndef GLEW_ARB_transpose_matrix
nuclear@82 430 #error "GLEW_ARB_transpose_matrix undefined?"
nuclear@82 431 #endif
nuclear@82 432
nuclear@90 433 static void draw_grid()
nuclear@90 434 {
nuclear@90 435 float viewsz_orig = cam_dist * tan(DEG_TO_RAD(fov) / 2.0);
nuclear@90 436 float sz1 = next_pow2((int)viewsz_orig);
nuclear@90 437 float sz0 = sz1 / 2.0;
nuclear@90 438 float t = (viewsz_orig - sz0) / (sz1 - sz0);
nuclear@90 439 float alpha = t < 0.333333 ? 0.0 : (t > 0.666666 ? 1.0 : (t - 0.333333) / 0.333333);
nuclear@90 440
nuclear@90 441 glPushAttrib(GL_ENABLE_BIT | GL_DEPTH_BITS);
nuclear@90 442
nuclear@90 443 glEnable(GL_BLEND);
nuclear@90 444 glDepthFunc(GL_ALWAYS);
nuclear@90 445
nuclear@90 446 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
nuclear@90 447 draw_grid(sz0 * 2.0, 10, 1.0 - alpha);
nuclear@90 448 draw_grid(sz1 * 2.0, 10, alpha);
nuclear@90 449
nuclear@90 450 glPopAttrib();
nuclear@90 451 }
nuclear@90 452
nuclear@90 453 static void draw_grid(float sz, int nlines, float alpha)
nuclear@90 454 {
nuclear@90 455 float hsz = sz / 2.0;
nuclear@90 456 float offs = sz / (float)nlines;
nuclear@90 457
nuclear@90 458 glPushAttrib(GL_ENABLE_BIT);
nuclear@90 459 glDisable(GL_LIGHTING);
nuclear@90 460 glDisable(GL_TEXTURE_2D);
nuclear@90 461
nuclear@90 462 glLineWidth(2.0);
nuclear@90 463 glBegin(GL_LINES);
nuclear@90 464 glColor4f(1, 0, 0, alpha);
nuclear@90 465 glVertex3f(-hsz, 0, 0);
nuclear@90 466 glVertex3f(hsz, 0, 0);
nuclear@90 467 glColor4f(0, 0, 1, alpha);
nuclear@90 468 glVertex3f(0, 0, -hsz);
nuclear@90 469 glVertex3f(0, 0, hsz);
nuclear@90 470 glEnd();
nuclear@90 471
nuclear@90 472 glLineWidth(1.0);
nuclear@90 473 glBegin(GL_LINES);
nuclear@90 474 glColor4f(0.5, 0.5, 0.5, alpha);
nuclear@90 475 for(int i=0; i<nlines / 2; i++) {
nuclear@90 476 float dist = (float)(i + 1) * offs;
nuclear@90 477 for(int j=0; j<2; j++) {
nuclear@90 478 float sign = j > 0 ? -1.0 : 1.0;
nuclear@90 479 glVertex3f(-hsz, 0, dist * sign);
nuclear@90 480 glVertex3f(hsz, 0, dist * sign);
nuclear@90 481 glVertex3f(dist * sign, 0, -hsz);
nuclear@90 482 glVertex3f(dist * sign, 0, hsz);
nuclear@90 483 }
nuclear@90 484 }
nuclear@90 485 glEnd();
nuclear@90 486
nuclear@90 487 glPopAttrib();
nuclear@90 488 }
nuclear@90 489
nuclear@75 490 static void draw_node(goat3d_node *node)
nuclear@75 491 {
nuclear@85 492 SceneNodeData *data = sdata ? sdata->get_node_data(node) : 0;
nuclear@85 493 if(!data) return;
nuclear@85 494
nuclear@75 495 float xform[16];
nuclear@75 496 goat3d_get_node_matrix(node, xform, anim_time);
nuclear@78 497
nuclear@78 498 glPushMatrix();
nuclear@82 499 glMultTransposeMatrixf(xform);
nuclear@75 500
nuclear@85 501 if(data->visible) {
nuclear@85 502 if(goat3d_get_node_type(node) == GOAT3D_NODE_MESH) {
nuclear@85 503 goat3d_mesh *mesh = (goat3d_mesh*)goat3d_get_node_object(node);
nuclear@75 504
nuclear@85 505 draw_mesh(mesh);
nuclear@88 506
nuclear@88 507 if(data->selected) {
nuclear@88 508 float bmin[3], bmax[3];
nuclear@88 509 goat3d_get_mesh_bounds(mesh, bmin, bmax);
nuclear@88 510
nuclear@88 511 glPushAttrib(GL_ENABLE_BIT);
nuclear@88 512 glDisable(GL_LIGHTING);
nuclear@88 513
nuclear@88 514 glColor3f(0.3, 1, 0.2);
nuclear@88 515
nuclear@88 516 glBegin(GL_LINE_LOOP);
nuclear@88 517 glVertex3f(bmin[0], bmin[1], bmin[2]);
nuclear@88 518 glVertex3f(bmax[0], bmin[1], bmin[2]);
nuclear@88 519 glVertex3f(bmax[0], bmin[1], bmax[2]);
nuclear@88 520 glVertex3f(bmin[0], bmin[1], bmax[2]);
nuclear@88 521 glEnd();
nuclear@88 522 glBegin(GL_LINE_LOOP);
nuclear@88 523 glVertex3f(bmin[0], bmax[1], bmin[2]);
nuclear@88 524 glVertex3f(bmax[0], bmax[1], bmin[2]);
nuclear@88 525 glVertex3f(bmax[0], bmax[1], bmax[2]);
nuclear@88 526 glVertex3f(bmin[0], bmax[1], bmax[2]);
nuclear@88 527 glEnd();
nuclear@88 528 glBegin(GL_LINES);
nuclear@88 529 glVertex3f(bmin[0], bmin[1], bmin[2]);
nuclear@88 530 glVertex3f(bmin[0], bmax[1], bmin[2]);
nuclear@88 531 glVertex3f(bmin[0], bmin[1], bmax[2]);
nuclear@88 532 glVertex3f(bmin[0], bmax[1], bmax[2]);
nuclear@88 533 glVertex3f(bmax[0], bmin[1], bmin[2]);
nuclear@88 534 glVertex3f(bmax[0], bmax[1], bmin[2]);
nuclear@88 535 glVertex3f(bmax[0], bmin[1], bmax[2]);
nuclear@88 536 glVertex3f(bmax[0], bmax[1], bmax[2]);
nuclear@88 537 glEnd();
nuclear@88 538
nuclear@88 539 glPopAttrib();
nuclear@88 540 }
nuclear@85 541 }
nuclear@75 542 }
nuclear@75 543
nuclear@83 544 int num_child = goat3d_get_node_child_count(node);
nuclear@75 545 for(int i=0; i<num_child; i++) {
nuclear@75 546 draw_node(goat3d_get_node_child(node, i));
nuclear@83 547 }
nuclear@78 548
nuclear@78 549 glPopMatrix();
nuclear@78 550 }
nuclear@78 551
nuclear@82 552 static void draw_mesh(goat3d_mesh *mesh)
nuclear@82 553 {
nuclear@83 554 static const float white[] = {1, 1, 1, 1};
nuclear@83 555 static const float black[] = {0, 0, 0, 1};
nuclear@83 556
nuclear@83 557 const float *color;
nuclear@83 558 goat3d_material *mtl = goat3d_get_mesh_mtl(mesh);
nuclear@83 559
nuclear@83 560 if(mtl && (color = goat3d_get_mtl_attrib(mtl, GOAT3D_MAT_ATTR_DIFFUSE))) {
nuclear@83 561 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);
nuclear@90 562 glColor3fv(color);
nuclear@83 563 } else {
nuclear@83 564 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, white);
nuclear@90 565 glColor3fv(white);
nuclear@83 566 }
nuclear@83 567 if(mtl && (color = goat3d_get_mtl_attrib(mtl, GOAT3D_MAT_ATTR_SPECULAR))) {
nuclear@83 568 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
nuclear@83 569 } else {
nuclear@83 570 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
nuclear@83 571 }
nuclear@83 572 if(mtl && (color = goat3d_get_mtl_attrib(mtl, GOAT3D_MAT_ATTR_SHININESS))) {
nuclear@83 573 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, color[0]);
nuclear@83 574 } else {
nuclear@83 575 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 60.0);
nuclear@83 576 }
nuclear@83 577 // TODO texture
nuclear@83 578
nuclear@83 579
nuclear@82 580 int num_faces = goat3d_get_mesh_face_count(mesh);
nuclear@82 581 int num_verts = goat3d_get_mesh_attrib_count(mesh, GOAT3D_MESH_ATTR_VERTEX);
nuclear@82 582
nuclear@82 583 glEnableClientState(GL_VERTEX_ARRAY);
nuclear@82 584 glVertexPointer(3, GL_FLOAT, 0, goat3d_get_mesh_attribs(mesh, GOAT3D_MESH_ATTR_VERTEX));
nuclear@82 585
nuclear@82 586 float *data;
nuclear@82 587 if((data = (float*)goat3d_get_mesh_attribs(mesh, GOAT3D_MESH_ATTR_NORMAL))) {
nuclear@82 588 glEnableClientState(GL_NORMAL_ARRAY);
nuclear@82 589 glNormalPointer(GL_FLOAT, 0, data);
nuclear@82 590 }
nuclear@82 591 if((data = (float*)goat3d_get_mesh_attribs(mesh, GOAT3D_MESH_ATTR_TEXCOORD))) {
nuclear@82 592 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
nuclear@82 593 glTexCoordPointer(2, GL_FLOAT, 0, data);
nuclear@82 594 }
nuclear@82 595
nuclear@82 596 int *indices;
nuclear@82 597 if((indices = goat3d_get_mesh_faces(mesh))) {
nuclear@82 598 glDrawElements(GL_TRIANGLES, num_faces * 3, GL_UNSIGNED_INT, indices);
nuclear@82 599 } else {
nuclear@82 600 glDrawArrays(GL_TRIANGLES, 0, num_verts * 3);
nuclear@82 601 }
nuclear@82 602
nuclear@82 603 glDisableClientState(GL_VERTEX_ARRAY);
nuclear@82 604 glDisableClientState(GL_NORMAL_ARRAY);
nuclear@82 605 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
nuclear@82 606 }
nuclear@82 607
nuclear@78 608
nuclear@78 609 static float prev_x, prev_y;
nuclear@78 610 void GoatViewport::mousePressEvent(QMouseEvent *ev)
nuclear@78 611 {
nuclear@78 612 prev_x = ev->x();
nuclear@78 613 prev_y = ev->y();
nuclear@78 614 }
nuclear@78 615
nuclear@78 616 void GoatViewport::mouseMoveEvent(QMouseEvent *ev)
nuclear@78 617 {
nuclear@78 618 int dx = ev->x() - prev_x;
nuclear@78 619 int dy = ev->y() - prev_y;
nuclear@80 620 prev_x = ev->x();
nuclear@80 621 prev_y = ev->y();
nuclear@78 622
nuclear@78 623 if(!dx && !dy) return;
nuclear@78 624
nuclear@78 625 if(ev->buttons() & Qt::LeftButton) {
nuclear@78 626 cam_theta += dx * 0.5;
nuclear@78 627 cam_phi += dy * 0.5;
nuclear@78 628
nuclear@78 629 if(cam_phi < -90) cam_phi = -90;
nuclear@78 630 if(cam_phi > 90) cam_phi = 90;
nuclear@78 631 }
nuclear@78 632 if(ev->buttons() & Qt::RightButton) {
nuclear@78 633 cam_dist += dy * 0.1;
nuclear@78 634
nuclear@78 635 if(cam_dist < 0.0) cam_dist = 0.0;
nuclear@78 636 }
nuclear@78 637 updateGL();
nuclear@78 638 }
nuclear@83 639
nuclear@83 640 static const char *about_str =
nuclear@83 641 "GoatView - Goat3D scene file viewer<br>"
nuclear@83 642 "Copyright (C) 2014 John Tsiombikas &lt;<a href=\"mailto:nuclear@mutantstargoat.com\">nuclear@mutantstargoat.com</a>&gt;<br>"
nuclear@83 643 "<br>"
nuclear@83 644 "This program is free software: you can redistribute it and/or modify<br>"
nuclear@83 645 "it under the terms of the GNU General Public License as published by<br>"
nuclear@83 646 "the Free Software Foundation, either version 3 of the License, or<br>"
nuclear@83 647 "(at your option) any later version.<br>"
nuclear@83 648 "<br>"
nuclear@83 649 "This program is distributed in the hope that it will be useful,<br>"
nuclear@83 650 "but WITHOUT ANY WARRANTY; without even the implied warranty of<br>"
nuclear@83 651 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the<br>"
nuclear@83 652 "GNU General Public License for more details.<br>"
nuclear@83 653 "<br>"
nuclear@83 654 "You should have received a copy of the GNU General Public License<br>"
nuclear@83 655 "along with this program. If not, see <a href=\"http://www.gnu.org/licenses/gpl\">http://www.gnu.org/licenses/gpl</a>.";
nuclear@83 656
nuclear@83 657 void GoatView::show_about()
nuclear@83 658 {
nuclear@83 659 QMessageBox::information(this, "About GoatView", about_str);
nuclear@83 660 }
nuclear@90 661
nuclear@93 662
nuclear@90 663 static int next_pow2(int x)
nuclear@90 664 {
nuclear@90 665 x--;
nuclear@90 666 x = (x >> 1) | x;
nuclear@90 667 x = (x >> 2) | x;
nuclear@90 668 x = (x >> 4) | x;
nuclear@90 669 x = (x >> 8) | x;
nuclear@90 670 x = (x >> 16) | x;
nuclear@90 671 return x + 1;
nuclear@90 672 }