radiant/camwindow.cpp

   1 /*
   2    Copyright (C) 1999-2006 Id Software, Inc. and contributors.
   3    For a list of contributors, see the accompanying CONTRIBUTORS file.
   4
   5    This file is part of GtkRadiant.
   6
   7    GtkRadiant is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    GtkRadiant is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GtkRadiant; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 //
  23 // Camera Window
  24 //
  25 // Leonardo Zide (leo@lokigames.com)
  26 //
  27
  28 #include "camwindow.h"
  29
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkkeysyms.h>
  32
  33 #include "debugging/debugging.h"
  34
  35 #include "iscenegraph.h"
  36 #include "irender.h"
  37 #include "igl.h"
  38 #include "icamera.h"
  39 #include "cullable.h"
  40 #include "renderable.h"
  41 #include "preferencesystem.h"
  42
  43 #include "signal/signal.h"
  44 #include "container/array.h"
  45 #include "scenelib.h"
  46 #include "render.h"
  47 #include "cmdlib.h"
  48 #include "math/frustum.h"
  49
  50 #include "gtkutil/widget.h"
  51 #include "gtkutil/button.h"
  52 #include "gtkutil/toolbar.h"
  53 #include "gtkutil/glwidget.h"
  54 #include "gtkutil/xorrectangle.h"
  55 #include "gtkmisc.h"
  56 #include "selection.h"
  57 #include "mainframe.h"
  58 #include "preferences.h"
  59 #include "commands.h"
  60 #include "xywindow.h"
  61 #include "windowobservers.h"
  62 #include "renderstate.h"
  63
  64 #include "timer.h"
  65
  66 Signal0 g_cameraMoved_callbacks;
  67
  68 void AddCameraMovedCallback( const SignalHandler& handler ){
  69         g_cameraMoved_callbacks.connectLast( handler );
  70 }
  71
  72 void CameraMovedNotify(){
  73         g_cameraMoved_callbacks();
  74 }
  75
  76
  77 struct camwindow_globals_private_t
  78 {
  79         int m_nMoveSpeed;
  80         bool m_bCamLinkSpeed;
  81         int m_nAngleSpeed;
  82         bool m_bCamInverseMouse;
  83         bool m_bCamDiscrete;
  84         bool m_bCubicClipping;
  85         bool m_showStats;
  86         int m_nStrafeMode;
  87
  88         camwindow_globals_private_t() :
  89                 m_nMoveSpeed( 100 ),
  90                 m_bCamLinkSpeed( true ),
  91                 m_nAngleSpeed( 3 ),
  92                 m_bCamInverseMouse( false ),
  93                 m_bCamDiscrete( true ),
  94                 m_bCubicClipping( true ),
  95                 m_showStats( true ),
  96                 m_nStrafeMode( 0 ){
  97         }
  98
  99 };
 100
 101 camwindow_globals_private_t g_camwindow_globals_private;
 102
 103
 104 const Matrix4 g_opengl2radiant(
 105         0, 0,-1, 0,
 106         -1, 0, 0, 0,
 107         0, 1, 0, 0,
 108         0, 0, 0, 1
 109         );
 110
 111 const Matrix4 g_radiant2opengl(
 112         0,-1, 0, 0,
 113         0, 0, 1, 0,
 114         -1, 0, 0, 0,
 115         0, 0, 0, 1
 116         );
 117
 118 struct camera_t;
 119 void Camera_mouseMove( camera_t& camera, int x, int y );
 120
 121 enum camera_draw_mode
 122 {
 123         cd_wire,
 124         cd_solid,
 125         cd_texture,
 126         cd_lighting
 127 };
 128
 129 struct camera_t
 130 {
 131         int width, height;
 132
 133         bool timing;
 134
 135         Vector3 origin;
 136         Vector3 angles;
 137
 138         Vector3 color; // background
 139
 140         Vector3 forward, right; // move matrix (TTimo: used to have up but it was not updated)
 141         Vector3 vup, vpn, vright; // view matrix (taken from the modelview matrix)
 142
 143         Matrix4 projection;
 144         Matrix4 modelview;
 145
 146         bool m_strafe; // true when in strafemode toggled by the ctrl-key
 147         bool m_strafe_forward; // true when in strafemode by ctrl-key and shift is pressed for forward strafing
 148
 149         unsigned int movementflags; // movement flags
 150         Timer m_keycontrol_timer;
 151         guint m_keymove_handler;
 152
 153
 154         float fieldOfView;
 155
 156         DeferredMotionDelta m_mouseMove;
 157
 158         static void motionDelta( int x, int y, void* data ){
 159                 Camera_mouseMove( *reinterpret_cast<camera_t*>( data ), x, y );
 160         }
 161
 162         View* m_view;
 163         Callback<void()> m_update;
 164
 165         static camera_draw_mode draw_mode;
 166
 167         camera_t( View* view, const Callback<void()>& update )
 168                 : width( 0 ),
 169                 height( 0 ),
 170                 timing( false ),
 171                 origin( 0, 0, 0 ),
 172                 angles( 0, 0, 0 ),
 173                 color( 0, 0, 0 ),
 174                 projection( g_matrix4_identity ),
 175                 modelview( g_matrix4_identity ),
 176                 movementflags( 0 ),
 177                 m_keycontrol_timer(),
 178                 m_keymove_handler( 0 ),
 179                 fieldOfView( 90.0f ),
 180                 m_mouseMove( motionDelta, this ),
 181                 m_view( view ),
 182                 m_update( update ){
 183         }
 184 };
 185
 186 camera_draw_mode camera_t::draw_mode = cd_texture;
 187
 188 inline Matrix4 projection_for_camera( float near_z, float far_z, float fieldOfView, int width, int height ){
 189         const float half_width = static_cast<float>( near_z * tan( degrees_to_radians( fieldOfView * 0.5 ) ) );
 190         const float half_height = half_width * ( static_cast<float>( height ) / static_cast<float>( width ) );
 191
 192         return matrix4_frustum(
 193                            -half_width,
 194                            half_width,
 195                            -half_height,
 196                            half_height,
 197                            near_z,
 198                            far_z
 199                            );
 200 }
 201
 202 float Camera_getFarClipPlane( camera_t& camera ){
 203         return ( g_camwindow_globals_private.m_bCubicClipping ) ? pow( 2.0, ( g_camwindow_globals.m_nCubicScale + 7 ) / 2.0 ) : 32768.0f;
 204 }
 205
 206 void Camera_updateProjection( camera_t& camera ){
 207         float farClip = Camera_getFarClipPlane( camera );
 208         camera.projection = projection_for_camera( farClip / 4096.0f, farClip, camera.fieldOfView, camera.width, camera.height );
 209
 210         camera.m_view->Construct( camera.projection, camera.modelview, camera.width, camera.height );
 211 }
 212
 213 void Camera_updateVectors( camera_t& camera ){
 214         for ( int i = 0 ; i < 3 ; i++ )
 215         {
 216                 camera.vright[i] = camera.modelview[( i << 2 ) + 0];
 217                 camera.vup[i] = camera.modelview[( i << 2 ) + 1];
 218                 camera.vpn[i] = camera.modelview[( i << 2 ) + 2];
 219         }
 220 }
 221
 222 void Camera_updateModelview( camera_t& camera ){
 223         camera.modelview = g_matrix4_identity;
 224
 225         // roll, pitch, yaw
 226         Vector3 radiant_eulerXYZ( 0, -camera.angles[CAMERA_PITCH], camera.angles[CAMERA_YAW] );
 227
 228         matrix4_translate_by_vec3( camera.modelview, camera.origin );
 229         matrix4_rotate_by_euler_xyz_degrees( camera.modelview, radiant_eulerXYZ );
 230         matrix4_multiply_by_matrix4( camera.modelview, g_radiant2opengl );
 231         matrix4_affine_invert( camera.modelview );
 232
 233         Camera_updateVectors( camera );
 234
 235         camera.m_view->Construct( camera.projection, camera.modelview, camera.width, camera.height );
 236 }
 237
 238
 239 void Camera_Move_updateAxes( camera_t& camera ){
 240         double ya = degrees_to_radians( camera.angles[CAMERA_YAW] );
 241
 242         // the movement matrix is kept 2d
 243         camera.forward[0] = static_cast<float>( cos( ya ) );
 244         camera.forward[1] = static_cast<float>( sin( ya ) );
 245         camera.forward[2] = 0;
 246         camera.right[0] = camera.forward[1];
 247         camera.right[1] = -camera.forward[0];
 248 }
 249
 250 void Camera_Freemove_updateAxes( camera_t& camera ){
 251         camera.right = camera.vright;
 252         camera.forward = vector3_negated( camera.vpn );
 253 }
 254
 255 const Vector3& Camera_getOrigin( camera_t& camera ){
 256         return camera.origin;
 257 }
 258
 259 void Camera_setOrigin( camera_t& camera, const Vector3& origin ){
 260         camera.origin = origin;
 261         Camera_updateModelview( camera );
 262         camera.m_update();
 263         CameraMovedNotify();
 264 }
 265
 266 const Vector3& Camera_getAngles( camera_t& camera ){
 267         return camera.angles;
 268 }
 269
 270 void Camera_setAngles( camera_t& camera, const Vector3& angles ){
 271         camera.angles = angles;
 272         Camera_updateModelview( camera );
 273         camera.m_update();
 274         CameraMovedNotify();
 275 }
 276
 277
 278 void Camera_FreeMove( camera_t& camera, int dx, int dy ){
 279         // free strafe mode, toggled by the ctrl key with optional shift for forward movement
 280         if ( camera.m_strafe ) {
 281                 float strafespeed = 0.65f;
 282
 283                 if ( g_camwindow_globals_private.m_bCamLinkSpeed ) {
 284                         strafespeed = (float)g_camwindow_globals_private.m_nMoveSpeed / 100;
 285                 }
 286
 287                 camera.origin -= camera.vright * strafespeed * dx;
 288                 if ( camera.m_strafe_forward ) {
 289                         camera.origin += camera.vpn * strafespeed * dy;
 290                 }
 291                 else{
 292                         camera.origin += camera.vup * strafespeed * dy;
 293                 }
 294         }
 295         else // free rotation
 296         {
 297                 const float dtime = 0.1f;
 298
 299                 if ( g_camwindow_globals_private.m_bCamInverseMouse ) {
 300                         camera.angles[CAMERA_PITCH] -= dy * dtime * g_camwindow_globals_private.m_nAngleSpeed;
 301                 }
 302                 else{
 303                         camera.angles[CAMERA_PITCH] += dy * dtime * g_camwindow_globals_private.m_nAngleSpeed;
 304                 }
 305
 306                 camera.angles[CAMERA_YAW] += dx * dtime * g_camwindow_globals_private.m_nAngleSpeed;
 307
 308                 if ( camera.angles[CAMERA_PITCH] > 90 ) {
 309                         camera.angles[CAMERA_PITCH] = 90;
 310                 }
 311                 else if ( camera.angles[CAMERA_PITCH] < -90 ) {
 312                         camera.angles[CAMERA_PITCH] = -90;
 313                 }
 314
 315                 if ( camera.angles[CAMERA_YAW] >= 360 ) {
 316                         camera.angles[CAMERA_YAW] -= 360;
 317                 }
 318                 else if ( camera.angles[CAMERA_YAW] <= 0 ) {
 319                         camera.angles[CAMERA_YAW] += 360;
 320                 }
 321         }
 322
 323         Camera_updateModelview( camera );
 324         Camera_Freemove_updateAxes( camera );
 325 }
 326
 327 void Cam_MouseControl( camera_t& camera, int x, int y ){
 328         float xf = (float)( x - camera.width / 2 ) / ( camera.width / 2 );
 329         float yf = (float)( y - camera.height / 2 ) / ( camera.height / 2 );
 330
 331         xf *= 1.0f - fabsf( yf );
 332         if ( xf < 0 ) {
 333                 xf += 0.1f;
 334                 if ( xf > 0 ) {
 335                         xf = 0;
 336                 }
 337         }
 338         else
 339         {
 340                 xf -= 0.1f;
 341                 if ( xf < 0 ) {
 342                         xf = 0;
 343                 }
 344         }
 345
 346         vector3_add( camera.origin, vector3_scaled( camera.forward, yf * 0.1f * g_camwindow_globals_private.m_nMoveSpeed ) );
 347         camera.angles[CAMERA_YAW] += xf * -0.1f * g_camwindow_globals_private.m_nAngleSpeed;
 348
 349         Camera_updateModelview( camera );
 350 }
 351
 352 void Camera_mouseMove( camera_t& camera, int x, int y ){
 353         //globalOutputStream() << "mousemove... ";
 354         Camera_FreeMove( camera, -x, -y );
 355         camera.m_update();
 356         CameraMovedNotify();
 357 }
 358
 359 const unsigned int MOVE_NONE = 0;
 360 const unsigned int MOVE_FORWARD = 1 << 0;
 361 const unsigned int MOVE_BACK = 1 << 1;
 362 const unsigned int MOVE_ROTRIGHT = 1 << 2;
 363 const unsigned int MOVE_ROTLEFT = 1 << 3;
 364 const unsigned int MOVE_STRAFERIGHT = 1 << 4;
 365 const unsigned int MOVE_STRAFELEFT = 1 << 5;
 366 const unsigned int MOVE_UP = 1 << 6;
 367 const unsigned int MOVE_DOWN = 1 << 7;
 368 const unsigned int MOVE_PITCHUP = 1 << 8;
 369 const unsigned int MOVE_PITCHDOWN = 1 << 9;
 370 const unsigned int MOVE_ALL = MOVE_FORWARD | MOVE_BACK | MOVE_ROTRIGHT | MOVE_ROTLEFT | MOVE_STRAFERIGHT | MOVE_STRAFELEFT | MOVE_UP | MOVE_DOWN | MOVE_PITCHUP | MOVE_PITCHDOWN;
 371
 372 void Cam_KeyControl( camera_t& camera, float dtime ){
 373         // Update angles
 374         if ( camera.movementflags & MOVE_ROTLEFT ) {
 375                 camera.angles[CAMERA_YAW] += 15 * dtime * g_camwindow_globals_private.m_nAngleSpeed;
 376         }
 377         if ( camera.movementflags & MOVE_ROTRIGHT ) {
 378                 camera.angles[CAMERA_YAW] -= 15 * dtime * g_camwindow_globals_private.m_nAngleSpeed;
 379         }
 380         if ( camera.movementflags & MOVE_PITCHUP ) {
 381                 camera.angles[CAMERA_PITCH] += 15 * dtime * g_camwindow_globals_private.m_nAngleSpeed;
 382                 if ( camera.angles[CAMERA_PITCH] > 90 ) {
 383                         camera.angles[CAMERA_PITCH] = 90;
 384                 }
 385         }
 386         if ( camera.movementflags & MOVE_PITCHDOWN ) {
 387                 camera.angles[CAMERA_PITCH] -= 15 * dtime * g_camwindow_globals_private.m_nAngleSpeed;
 388                 if ( camera.angles[CAMERA_PITCH] < -90 ) {
 389                         camera.angles[CAMERA_PITCH] = -90;
 390                 }
 391         }
 392
 393         Camera_updateModelview( camera );
 394         Camera_Freemove_updateAxes( camera );
 395
 396         // Update position
 397         if ( camera.movementflags & MOVE_FORWARD ) {
 398                 vector3_add( camera.origin, vector3_scaled( camera.forward, dtime * g_camwindow_globals_private.m_nMoveSpeed ) );
 399         }
 400         if ( camera.movementflags & MOVE_BACK ) {
 401                 vector3_add( camera.origin, vector3_scaled( camera.forward, -dtime * g_camwindow_globals_private.m_nMoveSpeed ) );
 402         }
 403         if ( camera.movementflags & MOVE_STRAFELEFT ) {
 404                 vector3_add( camera.origin, vector3_scaled( camera.right, -dtime * g_camwindow_globals_private.m_nMoveSpeed ) );
 405         }
 406         if ( camera.movementflags & MOVE_STRAFERIGHT ) {
 407                 vector3_add( camera.origin, vector3_scaled( camera.right, dtime * g_camwindow_globals_private.m_nMoveSpeed ) );
 408         }
 409         if ( camera.movementflags & MOVE_UP ) {
 410                 vector3_add( camera.origin, vector3_scaled( g_vector3_axis_z, dtime * g_camwindow_globals_private.m_nMoveSpeed ) );
 411         }
 412         if ( camera.movementflags & MOVE_DOWN ) {
 413                 vector3_add( camera.origin, vector3_scaled( g_vector3_axis_z, -dtime * g_camwindow_globals_private.m_nMoveSpeed ) );
 414         }
 415
 416         Camera_updateModelview( camera );
 417 }
 418
 419 void Camera_keyMove( camera_t& camera ){
 420         camera.m_mouseMove.flush();
 421
 422         //globalOutputStream() << "keymove... ";
 423         float time_seconds = camera.m_keycontrol_timer.elapsed_msec() / static_cast<float>( msec_per_sec );
 424         camera.m_keycontrol_timer.start();
 425         if ( time_seconds > 0.05f ) {
 426                 time_seconds = 0.05f; // 20fps
 427         }
 428         Cam_KeyControl( camera, time_seconds * 5.0f );
 429
 430         camera.m_update();
 431         CameraMovedNotify();
 432 }
 433
 434 gboolean camera_keymove( gpointer data ){
 435         Camera_keyMove( *reinterpret_cast<camera_t*>( data ) );
 436         return TRUE;
 437 }
 438
 439 void Camera_setMovementFlags( camera_t& camera, unsigned int mask ){
 440         if ( ( ~camera.movementflags & mask ) != 0 && camera.movementflags == 0 ) {
 441                 camera.m_keymove_handler = g_idle_add( camera_keymove, &camera );
 442         }
 443         camera.movementflags |= mask;
 444 }
 445 void Camera_clearMovementFlags( camera_t& camera, unsigned int mask ){
 446         if ( ( camera.movementflags & ~mask ) == 0 && camera.movementflags != 0 ) {
 447                 g_source_remove( camera.m_keymove_handler );
 448                 camera.m_keymove_handler = 0;
 449         }
 450         camera.movementflags &= ~mask;
 451 }
 452
 453 void Camera_MoveForward_KeyDown( camera_t& camera ){
 454         Camera_setMovementFlags( camera, MOVE_FORWARD );
 455 }
 456 void Camera_MoveForward_KeyUp( camera_t& camera ){
 457         Camera_clearMovementFlags( camera, MOVE_FORWARD );
 458 }
 459 void Camera_MoveBack_KeyDown( camera_t& camera ){
 460         Camera_setMovementFlags( camera, MOVE_BACK );
 461 }
 462 void Camera_MoveBack_KeyUp( camera_t& camera ){
 463         Camera_clearMovementFlags( camera, MOVE_BACK );
 464 }
 465
 466 void Camera_MoveLeft_KeyDown( camera_t& camera ){
 467         Camera_setMovementFlags( camera, MOVE_STRAFELEFT );
 468 }
 469 void Camera_MoveLeft_KeyUp( camera_t& camera ){
 470         Camera_clearMovementFlags( camera, MOVE_STRAFELEFT );
 471 }
 472 void Camera_MoveRight_KeyDown( camera_t& camera ){
 473         Camera_setMovementFlags( camera, MOVE_STRAFERIGHT );
 474 }
 475 void Camera_MoveRight_KeyUp( camera_t& camera ){
 476         Camera_clearMovementFlags( camera, MOVE_STRAFERIGHT );
 477 }
 478
 479 void Camera_MoveUp_KeyDown( camera_t& camera ){
 480         Camera_setMovementFlags( camera, MOVE_UP );
 481 }
 482 void Camera_MoveUp_KeyUp( camera_t& camera ){
 483         Camera_clearMovementFlags( camera, MOVE_UP );
 484 }
 485 void Camera_MoveDown_KeyDown( camera_t& camera ){
 486         Camera_setMovementFlags( camera, MOVE_DOWN );
 487 }
 488 void Camera_MoveDown_KeyUp( camera_t& camera ){
 489         Camera_clearMovementFlags( camera, MOVE_DOWN );
 490 }
 491
 492 void Camera_RotateLeft_KeyDown( camera_t& camera ){
 493         Camera_setMovementFlags( camera, MOVE_ROTLEFT );
 494 }
 495 void Camera_RotateLeft_KeyUp( camera_t& camera ){
 496         Camera_clearMovementFlags( camera, MOVE_ROTLEFT );
 497 }
 498 void Camera_RotateRight_KeyDown( camera_t& camera ){
 499         Camera_setMovementFlags( camera, MOVE_ROTRIGHT );
 500 }
 501 void Camera_RotateRight_KeyUp( camera_t& camera ){
 502         Camera_clearMovementFlags( camera, MOVE_ROTRIGHT );
 503 }
 504
 505 void Camera_PitchUp_KeyDown( camera_t& camera ){
 506         Camera_setMovementFlags( camera, MOVE_PITCHUP );
 507 }
 508 void Camera_PitchUp_KeyUp( camera_t& camera ){
 509         Camera_clearMovementFlags( camera, MOVE_PITCHUP );
 510 }
 511 void Camera_PitchDown_KeyDown( camera_t& camera ){
 512         Camera_setMovementFlags( camera, MOVE_PITCHDOWN );
 513 }
 514 void Camera_PitchDown_KeyUp( camera_t& camera ){
 515         Camera_clearMovementFlags( camera, MOVE_PITCHDOWN );
 516 }
 517
 518
 519 typedef ReferenceCaller<camera_t, void(), &Camera_MoveForward_KeyDown> FreeMoveCameraMoveForwardKeyDownCaller;
 520 typedef ReferenceCaller<camera_t, void(), &Camera_MoveForward_KeyUp> FreeMoveCameraMoveForwardKeyUpCaller;
 521 typedef ReferenceCaller<camera_t, void(), &Camera_MoveBack_KeyDown> FreeMoveCameraMoveBackKeyDownCaller;
 522 typedef ReferenceCaller<camera_t, void(), &Camera_MoveBack_KeyUp> FreeMoveCameraMoveBackKeyUpCaller;
 523 typedef ReferenceCaller<camera_t, void(), &Camera_MoveLeft_KeyDown> FreeMoveCameraMoveLeftKeyDownCaller;
 524 typedef ReferenceCaller<camera_t, void(), &Camera_MoveLeft_KeyUp> FreeMoveCameraMoveLeftKeyUpCaller;
 525 typedef ReferenceCaller<camera_t, void(), &Camera_MoveRight_KeyDown> FreeMoveCameraMoveRightKeyDownCaller;
 526 typedef ReferenceCaller<camera_t, void(), &Camera_MoveRight_KeyUp> FreeMoveCameraMoveRightKeyUpCaller;
 527 typedef ReferenceCaller<camera_t, void(), &Camera_MoveUp_KeyDown> FreeMoveCameraMoveUpKeyDownCaller;
 528 typedef ReferenceCaller<camera_t, void(), &Camera_MoveUp_KeyUp> FreeMoveCameraMoveUpKeyUpCaller;
 529 typedef ReferenceCaller<camera_t, void(), &Camera_MoveDown_KeyDown> FreeMoveCameraMoveDownKeyDownCaller;
 530 typedef ReferenceCaller<camera_t, void(), &Camera_MoveDown_KeyUp> FreeMoveCameraMoveDownKeyUpCaller;
 531
 532
 533 const float SPEED_MOVE = 32;
 534 const float SPEED_TURN = 22.5;
 535 const float MIN_CAM_SPEED = 10;
 536 const float MAX_CAM_SPEED = 610;
 537 const float CAM_SPEED_STEP = 50;
 538
 539 void Camera_MoveForward_Discrete( camera_t& camera ){
 540         Camera_Move_updateAxes( camera );
 541         Camera_setOrigin( camera, vector3_added( Camera_getOrigin( camera ), vector3_scaled( camera.forward, SPEED_MOVE ) ) );
 542 }
 543 void Camera_MoveBack_Discrete( camera_t& camera ){
 544         Camera_Move_updateAxes( camera );
 545         Camera_setOrigin( camera, vector3_added( Camera_getOrigin( camera ), vector3_scaled( camera.forward, -SPEED_MOVE ) ) );
 546 }
 547
 548 void Camera_MoveUp_Discrete( camera_t& camera ){
 549         Vector3 origin( Camera_getOrigin( camera ) );
 550         origin[2] += SPEED_MOVE;
 551         Camera_setOrigin( camera, origin );
 552 }
 553 void Camera_MoveDown_Discrete( camera_t& camera ){
 554         Vector3 origin( Camera_getOrigin( camera ) );
 555         origin[2] -= SPEED_MOVE;
 556         Camera_setOrigin( camera, origin );
 557 }
 558
 559 void Camera_MoveLeft_Discrete( camera_t& camera ){
 560         Camera_Move_updateAxes( camera );
 561         Camera_setOrigin( camera, vector3_added( Camera_getOrigin( camera ), vector3_scaled( camera.right, -SPEED_MOVE ) ) );
 562 }
 563 void Camera_MoveRight_Discrete( camera_t& camera ){
 564         Camera_Move_updateAxes( camera );
 565         Camera_setOrigin( camera, vector3_added( Camera_getOrigin( camera ), vector3_scaled( camera.right, SPEED_MOVE ) ) );
 566 }
 567
 568 void Camera_RotateLeft_Discrete( camera_t& camera ){
 569         Vector3 angles( Camera_getAngles( camera ) );
 570         angles[CAMERA_YAW] += SPEED_TURN;
 571         Camera_setAngles( camera, angles );
 572 }
 573 void Camera_RotateRight_Discrete( camera_t& camera ){
 574         Vector3 angles( Camera_getAngles( camera ) );
 575         angles[CAMERA_YAW] -= SPEED_TURN;
 576         Camera_setAngles( camera, angles );
 577 }
 578
 579 void Camera_PitchUp_Discrete( camera_t& camera ){
 580         Vector3 angles( Camera_getAngles( camera ) );
 581         angles[CAMERA_PITCH] += SPEED_TURN;
 582         if ( angles[CAMERA_PITCH] > 90 ) {
 583                 angles[CAMERA_PITCH] = 90;
 584         }
 585         Camera_setAngles( camera, angles );
 586 }
 587 void Camera_PitchDown_Discrete( camera_t& camera ){
 588         Vector3 angles( Camera_getAngles( camera ) );
 589         angles[CAMERA_PITCH] -= SPEED_TURN;
 590         if ( angles[CAMERA_PITCH] < -90 ) {
 591                 angles[CAMERA_PITCH] = -90;
 592         }
 593         Camera_setAngles( camera, angles );
 594 }
 595
 596
 597 class RadiantCameraView : public CameraView
 598 {
 599 camera_t& m_camera;
 600 View* m_view;
 601 Callback<void()> m_update;
 602 public:
 603 RadiantCameraView( camera_t& camera, View* view, const Callback<void()>& update ) : m_camera( camera ), m_view( view ), m_update( update ){
 604 }
 605 void update(){
 606         m_view->Construct( m_camera.projection, m_camera.modelview, m_camera.width, m_camera.height );
 607         m_update();
 608 }
 609 void setModelview( const Matrix4& modelview ){
 610         m_camera.modelview = modelview;
 611         matrix4_multiply_by_matrix4( m_camera.modelview, g_radiant2opengl );
 612         matrix4_affine_invert( m_camera.modelview );
 613         Camera_updateVectors( m_camera );
 614         update();
 615 }
 616 void setFieldOfView( float fieldOfView ){
 617         float farClip = Camera_getFarClipPlane( m_camera );
 618         m_camera.projection = projection_for_camera( farClip / 4096.0f, farClip, fieldOfView, m_camera.width, m_camera.height );
 619         update();
 620 }
 621 };
 622
 623
 624 void Camera_motionDelta( int x, int y, unsigned int state, void* data ){
 625         camera_t* cam = reinterpret_cast<camera_t*>( data );
 626
 627         cam->m_mouseMove.motion_delta( x, y, state );
 628
 629         switch ( g_camwindow_globals_private.m_nStrafeMode )
 630         {
 631         case 0:
 632                 cam->m_strafe = ( state & GDK_CONTROL_MASK ) != 0;
 633                 if ( cam->m_strafe ) {
 634                         cam->m_strafe_forward = ( state & GDK_SHIFT_MASK ) != 0;
 635                 }
 636                 else{
 637                         cam->m_strafe_forward = false;
 638                 }
 639                 break;
 640         case 1:
 641                 cam->m_strafe = ( state & GDK_CONTROL_MASK ) != 0 && ( state & GDK_SHIFT_MASK ) == 0;
 642                 cam->m_strafe_forward = false;
 643                 break;
 644         case 2:
 645                 cam->m_strafe = ( state & GDK_CONTROL_MASK ) != 0 && ( state & GDK_SHIFT_MASK ) == 0;
 646                 cam->m_strafe_forward = cam->m_strafe;
 647                 break;
 648         }
 649 }
 650
 651 class CamWnd
 652 {
 653 View m_view;
 654 camera_t m_Camera;
 655 RadiantCameraView m_cameraview;
 656 #if 0
 657 int m_PositionDragCursorX;
 658 int m_PositionDragCursorY;
 659 #endif
 660
 661 guint m_freemove_handle_focusout;
 662
 663 static Shader* m_state_select1;
 664 static Shader* m_state_select2;
 665
 666 FreezePointer m_freezePointer;
 667
 668 public:
 669 ui::GLArea m_gl_widget;
 670 ui::Window m_parent{ui::null};
 671
 672 SelectionSystemWindowObserver* m_window_observer;
 673 XORRectangle m_XORRectangle;
 674
 675 DeferredDraw m_deferredDraw;
 676 DeferredMotion m_deferred_motion;
 677
 678 guint m_selection_button_press_handler;
 679 guint m_selection_button_release_handler;
 680 guint m_selection_motion_handler;
 681
 682 guint m_freelook_button_press_handler;
 683
 684 guint m_sizeHandler;
 685 guint m_exposeHandler;
 686
 687 CamWnd();
 688 ~CamWnd();
 689
 690 bool m_drawing;
 691 void queue_draw(){
 692         //ASSERT_MESSAGE(!m_drawing, "CamWnd::queue_draw(): called while draw is already in progress");
 693         if ( m_drawing ) {
 694                 return;
 695         }
 696         //globalOutputStream() << "queue... ";
 697         m_deferredDraw.draw();
 698 }
 699 void draw();
 700
 701 static void captureStates(){
 702         m_state_select1 = GlobalShaderCache().capture( "$CAM_HIGHLIGHT" );
 703         m_state_select2 = GlobalShaderCache().capture( "$CAM_OVERLAY" );
 704 }
 705 static void releaseStates(){
 706         GlobalShaderCache().release( "$CAM_HIGHLIGHT" );
 707         GlobalShaderCache().release( "$CAM_OVERLAY" );
 708 }
 709
 710 camera_t& getCamera(){
 711         return m_Camera;
 712 };
 713
 714 void BenchMark();
 715 void Cam_ChangeFloor( bool up );
 716
 717 void DisableFreeMove();
 718 void EnableFreeMove();
 719 bool m_bFreeMove;
 720
 721 CameraView& getCameraView(){
 722         return m_cameraview;
 723 }
 724
 725 private:
 726 void Cam_Draw();
 727 };
 728
 729 typedef MemberCaller<CamWnd, void(), &CamWnd::queue_draw> CamWndQueueDraw;
 730
 731 Shader* CamWnd::m_state_select1 = 0;
 732 Shader* CamWnd::m_state_select2 = 0;
 733
 734 CamWnd* NewCamWnd(){
 735         return new CamWnd;
 736 }
 737 void DeleteCamWnd( CamWnd* camwnd ){
 738         delete camwnd;
 739 }
 740
 741 void CamWnd_constructStatic(){
 742         CamWnd::captureStates();
 743 }
 744
 745 void CamWnd_destroyStatic(){
 746         CamWnd::releaseStates();
 747 }
 748
 749 static CamWnd* g_camwnd = 0;
 750
 751 void GlobalCamera_setCamWnd( CamWnd& camwnd ){
 752         g_camwnd = &camwnd;
 753 }
 754
 755
 756 ui::GLArea CamWnd_getWidget( CamWnd& camwnd ){
 757         return camwnd.m_gl_widget;
 758 }
 759
 760 ui::Window CamWnd_getParent( CamWnd& camwnd ){
 761         return camwnd.m_parent;
 762 }
 763
 764 ToggleShown g_camera_shown( true );
 765
 766 void CamWnd_setParent( CamWnd& camwnd, ui::Window parent ){
 767         camwnd.m_parent = parent;
 768         g_camera_shown.connect( camwnd.m_parent );
 769 }
 770
 771 void CamWnd_Update( CamWnd& camwnd ){
 772         camwnd.queue_draw();
 773 }
 774
 775
 776
 777 camwindow_globals_t g_camwindow_globals;
 778
 779 const Vector3& Camera_getOrigin( CamWnd& camwnd ){
 780         return Camera_getOrigin( camwnd.getCamera() );
 781 }
 782
 783 void Camera_setOrigin( CamWnd& camwnd, const Vector3& origin ){
 784         Camera_setOrigin( camwnd.getCamera(), origin );
 785 }
 786
 787 const Vector3& Camera_getAngles( CamWnd& camwnd ){
 788         return Camera_getAngles( camwnd.getCamera() );
 789 }
 790
 791 void Camera_setAngles( CamWnd& camwnd, const Vector3& angles ){
 792         Camera_setAngles( camwnd.getCamera(), angles );
 793 }
 794
 795
 796 // =============================================================================
 797 // CamWnd class
 798
 799 gboolean enable_freelook_button_press( ui::Widget widget, GdkEventButton* event, CamWnd* camwnd ){
 800         if ( event->type == GDK_BUTTON_PRESS && event->button == 3 ) {
 801                 camwnd->EnableFreeMove();
 802                 return TRUE;
 803         }
 804         return FALSE;
 805 }
 806
 807 gboolean disable_freelook_button_press( ui::Widget widget, GdkEventButton* event, CamWnd* camwnd ){
 808         if ( event->type == GDK_BUTTON_PRESS && event->button == 3 ) {
 809                 camwnd->DisableFreeMove();
 810                 return TRUE;
 811         }
 812         return FALSE;
 813 }
 814
 815 #if 0
 816 gboolean mousecontrol_button_press( ui::Widget widget, GdkEventButton* event, CamWnd* camwnd ){
 817         if ( event->type == GDK_BUTTON_PRESS && event->button == 3 ) {
 818                 Cam_MouseControl( camwnd->getCamera(), event->x, widget->allocation.height - 1 - event->y );
 819         }
 820         return FALSE;
 821 }
 822 #endif
 823
 824 void camwnd_update_xor_rectangle( CamWnd& self, rect_t area ){
 825         if ( self.m_gl_widget.visible() ) {
 826                 self.m_XORRectangle.set( rectangle_from_area( area.min, area.max, self.getCamera().width, self.getCamera().height ) );
 827         }
 828 }
 829
 830
 831 gboolean selection_button_press( ui::Widget widget, GdkEventButton* event, WindowObserver* observer ){
 832         if ( event->type == GDK_BUTTON_PRESS ) {
 833                 observer->onMouseDown( WindowVector_forDouble( event->x, event->y ), button_for_button( event->button ), modifiers_for_state( event->state ) );
 834         }
 835         return FALSE;
 836 }
 837
 838 gboolean selection_button_release( ui::Widget widget, GdkEventButton* event, WindowObserver* observer ){
 839         if ( event->type == GDK_BUTTON_RELEASE ) {
 840                 observer->onMouseUp( WindowVector_forDouble( event->x, event->y ), button_for_button( event->button ), modifiers_for_state( event->state ) );
 841         }
 842         return FALSE;
 843 }
 844
 845 void selection_motion( gdouble x, gdouble y, guint state, void* data ){
 846         //globalOutputStream() << "motion... ";
 847         reinterpret_cast<WindowObserver*>( data )->onMouseMotion( WindowVector_forDouble( x, y ), modifiers_for_state( state ) );
 848 }
 849
 850 inline WindowVector windowvector_for_widget_centre( ui::Widget widget ){
 851         auto allocation = widget.dimensions();
 852         return WindowVector( static_cast<float>( allocation.width / 2 ), static_cast<float>(allocation.height / 2 ) );
 853 }
 854
 855 gboolean selection_button_press_freemove( ui::Widget widget, GdkEventButton* event, WindowObserver* observer ){
 856         if ( event->type == GDK_BUTTON_PRESS ) {
 857                 observer->onMouseDown( windowvector_for_widget_centre( widget ), button_for_button( event->button ), modifiers_for_state( event->state ) );
 858         }
 859         return FALSE;
 860 }
 861
 862 gboolean selection_button_release_freemove( ui::Widget widget, GdkEventButton* event, WindowObserver* observer ){
 863         if ( event->type == GDK_BUTTON_RELEASE ) {
 864                 observer->onMouseUp( windowvector_for_widget_centre( widget ), button_for_button( event->button ), modifiers_for_state( event->state ) );
 865         }
 866         return FALSE;
 867 }
 868
 869 gboolean selection_motion_freemove( ui::Widget widget, GdkEventMotion *event, WindowObserver* observer ){
 870         observer->onMouseMotion( windowvector_for_widget_centre( widget ), modifiers_for_state( event->state ) );
 871         return FALSE;
 872 }
 873
 874 gboolean wheelmove_scroll( ui::Widget widget, GdkEventScroll* event, CamWnd* camwnd ){
 875         if ( event->direction == GDK_SCROLL_UP ) {
 876                 Camera_Freemove_updateAxes( camwnd->getCamera() );
 877                 Camera_setOrigin( *camwnd, vector3_added( Camera_getOrigin( *camwnd ), vector3_scaled( camwnd->getCamera().forward, static_cast<float>( g_camwindow_globals_private.m_nMoveSpeed ) ) ) );
 878         }
 879         else if ( event->direction == GDK_SCROLL_DOWN ) {
 880                 Camera_Freemove_updateAxes( camwnd->getCamera() );
 881                 Camera_setOrigin( *camwnd, vector3_added( Camera_getOrigin( *camwnd ), vector3_scaled( camwnd->getCamera().forward, -static_cast<float>( g_camwindow_globals_private.m_nMoveSpeed ) ) ) );
 882         }
 883
 884         return FALSE;
 885 }
 886
 887 gboolean camera_size_allocate( ui::Widget widget, GtkAllocation* allocation, CamWnd* camwnd ){
 888         camwnd->getCamera().width = allocation->width;
 889         camwnd->getCamera().height = allocation->height;
 890         Camera_updateProjection( camwnd->getCamera() );
 891         camwnd->m_window_observer->onSizeChanged( camwnd->getCamera().width, camwnd->getCamera().height );
 892         camwnd->queue_draw();
 893         return FALSE;
 894 }
 895
 896 gboolean camera_expose( ui::Widget widget, GdkEventExpose* event, gpointer data ){
 897         reinterpret_cast<CamWnd*>( data )->draw();
 898         return FALSE;
 899 }
 900
 901 void KeyEvent_connect( const char* name ){
 902         const KeyEvent& keyEvent = GlobalKeyEvents_find( name );
 903         keydown_accelerators_add( keyEvent.m_accelerator, keyEvent.m_keyDown );
 904         keyup_accelerators_add( keyEvent.m_accelerator, keyEvent.m_keyUp );
 905 }
 906
 907 void KeyEvent_disconnect( const char* name ){
 908         const KeyEvent& keyEvent = GlobalKeyEvents_find( name );
 909         keydown_accelerators_remove( keyEvent.m_accelerator );
 910         keyup_accelerators_remove( keyEvent.m_accelerator );
 911 }
 912
 913 void CamWnd_registerCommands( CamWnd& camwnd ){
 914         GlobalKeyEvents_insert( "CameraForward", Accelerator( GDK_KEY_Up ),
 915                                                         ReferenceCaller<camera_t, void(), Camera_MoveForward_KeyDown>( camwnd.getCamera() ),
 916                                                         ReferenceCaller<camera_t, void(), Camera_MoveForward_KeyUp>( camwnd.getCamera() )
 917                                                         );
 918         GlobalKeyEvents_insert( "CameraBack", Accelerator( GDK_KEY_Down ),
 919                                                         ReferenceCaller<camera_t, void(), Camera_MoveBack_KeyDown>( camwnd.getCamera() ),
 920                                                         ReferenceCaller<camera_t, void(), Camera_MoveBack_KeyUp>( camwnd.getCamera() )
 921                                                         );
 922         GlobalKeyEvents_insert( "CameraLeft", Accelerator( GDK_KEY_Left ),
 923                                                         ReferenceCaller<camera_t, void(), Camera_RotateLeft_KeyDown>( camwnd.getCamera() ),
 924                                                         ReferenceCaller<camera_t, void(), Camera_RotateLeft_KeyUp>( camwnd.getCamera() )
 925                                                         );
 926         GlobalKeyEvents_insert( "CameraRight", Accelerator( GDK_KEY_Right ),
 927                                                         ReferenceCaller<camera_t, void(), Camera_RotateRight_KeyDown>( camwnd.getCamera() ),
 928                                                         ReferenceCaller<camera_t, void(), Camera_RotateRight_KeyUp>( camwnd.getCamera() )
 929                                                         );
 930         GlobalKeyEvents_insert( "CameraStrafeRight", Accelerator( GDK_KEY_period ),
 931                                                         ReferenceCaller<camera_t, void(), Camera_MoveRight_KeyDown>( camwnd.getCamera() ),
 932                                                         ReferenceCaller<camera_t, void(), Camera_MoveRight_KeyUp>( camwnd.getCamera() )
 933                                                         );
 934         GlobalKeyEvents_insert( "CameraStrafeLeft", Accelerator( GDK_KEY_comma ),
 935                                                         ReferenceCaller<camera_t, void(), Camera_MoveLeft_KeyDown>( camwnd.getCamera() ),
 936                                                         ReferenceCaller<camera_t, void(), Camera_MoveLeft_KeyUp>( camwnd.getCamera() )
 937                                                         );
 938         GlobalKeyEvents_insert( "CameraUp", Accelerator( 'D' ),
 939                                                         ReferenceCaller<camera_t, void(), Camera_MoveUp_KeyDown>( camwnd.getCamera() ),
 940                                                         ReferenceCaller<camera_t, void(), Camera_MoveUp_KeyUp>( camwnd.getCamera() )
 941                                                         );
 942         GlobalKeyEvents_insert( "CameraDown", Accelerator( 'C' ),
 943                                                         ReferenceCaller<camera_t, void(), Camera_MoveDown_KeyDown>( camwnd.getCamera() ),
 944                                                         ReferenceCaller<camera_t, void(), Camera_MoveDown_KeyUp>( camwnd.getCamera() )
 945                                                         );
 946         GlobalKeyEvents_insert( "CameraAngleDown", Accelerator( 'A' ),
 947                                                         ReferenceCaller<camera_t, void(), Camera_PitchDown_KeyDown>( camwnd.getCamera() ),
 948                                                         ReferenceCaller<camera_t, void(), Camera_PitchDown_KeyUp>( camwnd.getCamera() )
 949                                                         );
 950         GlobalKeyEvents_insert( "CameraAngleUp", Accelerator( 'Z' ),
 951                                                         ReferenceCaller<camera_t, void(), Camera_PitchUp_KeyDown>( camwnd.getCamera() ),
 952                                                         ReferenceCaller<camera_t, void(), Camera_PitchUp_KeyUp>( camwnd.getCamera() )
 953                                                         );
 954
 955         GlobalKeyEvents_insert( "CameraFreeMoveForward", Accelerator( GDK_KEY_Up ),
 956                                                         FreeMoveCameraMoveForwardKeyDownCaller( camwnd.getCamera() ),
 957                                                         FreeMoveCameraMoveForwardKeyUpCaller( camwnd.getCamera() )
 958                                                         );
 959         GlobalKeyEvents_insert( "CameraFreeMoveBack", Accelerator( GDK_KEY_Down ),
 960                                                         FreeMoveCameraMoveBackKeyDownCaller( camwnd.getCamera() ),
 961                                                         FreeMoveCameraMoveBackKeyUpCaller( camwnd.getCamera() )
 962                                                         );
 963         GlobalKeyEvents_insert( "CameraFreeMoveLeft", Accelerator( GDK_KEY_Left ),
 964                                                         FreeMoveCameraMoveLeftKeyDownCaller( camwnd.getCamera() ),
 965                                                         FreeMoveCameraMoveLeftKeyUpCaller( camwnd.getCamera() )
 966                                                         );
 967         GlobalKeyEvents_insert( "CameraFreeMoveRight", Accelerator( GDK_KEY_Right ),
 968                                                         FreeMoveCameraMoveRightKeyDownCaller( camwnd.getCamera() ),
 969                                                         FreeMoveCameraMoveRightKeyUpCaller( camwnd.getCamera() )
 970                                                         );
 971         GlobalKeyEvents_insert( "CameraFreeMoveUp", Accelerator( 'D' ),
 972                                                         FreeMoveCameraMoveUpKeyDownCaller( camwnd.getCamera() ),
 973                                                         FreeMoveCameraMoveUpKeyUpCaller( camwnd.getCamera() )
 974                                                         );
 975         GlobalKeyEvents_insert( "CameraFreeMoveDown", Accelerator( 'C' ),
 976                                                         FreeMoveCameraMoveDownKeyDownCaller( camwnd.getCamera() ),
 977                                                         FreeMoveCameraMoveDownKeyUpCaller( camwnd.getCamera() )
 978                                                         );
 979
 980         GlobalCommands_insert( "CameraForward", ReferenceCaller<camera_t, void(), Camera_MoveForward_Discrete>( camwnd.getCamera() ), Accelerator( GDK_KEY_Up ) );
 981         GlobalCommands_insert( "CameraBack", ReferenceCaller<camera_t, void(), Camera_MoveBack_Discrete>( camwnd.getCamera() ), Accelerator( GDK_KEY_Down ) );
 982         GlobalCommands_insert( "CameraLeft", ReferenceCaller<camera_t, void(), Camera_RotateLeft_Discrete>( camwnd.getCamera() ), Accelerator( GDK_KEY_Left ) );
 983         GlobalCommands_insert( "CameraRight", ReferenceCaller<camera_t, void(), Camera_RotateRight_Discrete>( camwnd.getCamera() ), Accelerator( GDK_KEY_Right ) );
 984         GlobalCommands_insert( "CameraStrafeRight", ReferenceCaller<camera_t, void(), Camera_MoveRight_Discrete>( camwnd.getCamera() ), Accelerator( GDK_KEY_period ) );
 985         GlobalCommands_insert( "CameraStrafeLeft", ReferenceCaller<camera_t, void(), Camera_MoveLeft_Discrete>( camwnd.getCamera() ), Accelerator( GDK_KEY_comma ) );
 986
 987         GlobalCommands_insert( "CameraUp", ReferenceCaller<camera_t, void(), Camera_MoveUp_Discrete>( camwnd.getCamera() ), Accelerator( 'D' ) );
 988         GlobalCommands_insert( "CameraDown", ReferenceCaller<camera_t, void(), Camera_MoveDown_Discrete>( camwnd.getCamera() ), Accelerator( 'C' ) );
 989         GlobalCommands_insert( "CameraAngleUp", ReferenceCaller<camera_t, void(), Camera_PitchUp_Discrete>( camwnd.getCamera() ), Accelerator( 'A' ) );
 990         GlobalCommands_insert( "CameraAngleDown", ReferenceCaller<camera_t, void(), Camera_PitchDown_Discrete>( camwnd.getCamera() ), Accelerator( 'Z' ) );
 991 }
 992
 993 void CamWnd_Move_Enable( CamWnd& camwnd ){
 994         KeyEvent_connect( "CameraForward" );
 995         KeyEvent_connect( "CameraBack" );
 996         KeyEvent_connect( "CameraLeft" );
 997         KeyEvent_connect( "CameraRight" );
 998         KeyEvent_connect( "CameraStrafeRight" );
 999         KeyEvent_connect( "CameraStrafeLeft" );
1000         KeyEvent_connect( "CameraUp" );
1001         KeyEvent_connect( "CameraDown" );
1002         KeyEvent_connect( "CameraAngleUp" );
1003         KeyEvent_connect( "CameraAngleDown" );
1004 }
1005
1006 void CamWnd_Move_Disable( CamWnd& camwnd ){
1007         KeyEvent_disconnect( "CameraForward" );
1008         KeyEvent_disconnect( "CameraBack" );
1009         KeyEvent_disconnect( "CameraLeft" );
1010         KeyEvent_disconnect( "CameraRight" );
1011         KeyEvent_disconnect( "CameraStrafeRight" );
1012         KeyEvent_disconnect( "CameraStrafeLeft" );
1013         KeyEvent_disconnect( "CameraUp" );
1014         KeyEvent_disconnect( "CameraDown" );
1015         KeyEvent_disconnect( "CameraAngleUp" );
1016         KeyEvent_disconnect( "CameraAngleDown" );
1017 }
1018
1019 void CamWnd_Move_Discrete_Enable( CamWnd& camwnd ){
1020         command_connect_accelerator( "CameraForward" );
1021         command_connect_accelerator( "CameraBack" );
1022         command_connect_accelerator( "CameraLeft" );
1023         command_connect_accelerator( "CameraRight" );
1024         command_connect_accelerator( "CameraStrafeRight" );
1025         command_connect_accelerator( "CameraStrafeLeft" );
1026         command_connect_accelerator( "CameraUp" );
1027         command_connect_accelerator( "CameraDown" );
1028         command_connect_accelerator( "CameraAngleUp" );
1029         command_connect_accelerator( "CameraAngleDown" );
1030 }
1031
1032 void CamWnd_Move_Discrete_Disable( CamWnd& camwnd ){
1033         command_disconnect_accelerator( "CameraForward" );
1034         command_disconnect_accelerator( "CameraBack" );
1035         command_disconnect_accelerator( "CameraLeft" );
1036         command_disconnect_accelerator( "CameraRight" );
1037         command_disconnect_accelerator( "CameraStrafeRight" );
1038         command_disconnect_accelerator( "CameraStrafeLeft" );
1039         command_disconnect_accelerator( "CameraUp" );
1040         command_disconnect_accelerator( "CameraDown" );
1041         command_disconnect_accelerator( "CameraAngleUp" );
1042         command_disconnect_accelerator( "CameraAngleDown" );
1043 }
1044
1045 struct CamWnd_Move_Discrete {
1046         static void Export(const Callback<void(bool)> &returnz) {
1047                 returnz(g_camwindow_globals_private.m_bCamDiscrete);
1048         }
1049
1050         static void Import(bool value) {
1051                 if (g_camwnd) {
1052                         Import_(*g_camwnd, value);
1053                 } else {
1054                         g_camwindow_globals_private.m_bCamDiscrete = value;
1055                 }
1056         }
1057
1058         static void Import_(CamWnd &camwnd, bool value) {
1059                 if (g_camwindow_globals_private.m_bCamDiscrete) {
1060                         CamWnd_Move_Discrete_Disable(camwnd);
1061                 } else {
1062                         CamWnd_Move_Disable(camwnd);
1063                 }
1064
1065                 g_camwindow_globals_private.m_bCamDiscrete = value;
1066
1067                 if (g_camwindow_globals_private.m_bCamDiscrete) {
1068                         CamWnd_Move_Discrete_Enable(camwnd);
1069                 } else {
1070                         CamWnd_Move_Enable(camwnd);
1071                 }
1072         }
1073 };
1074
1075
1076 void CamWnd_Add_Handlers_Move( CamWnd& camwnd ){
1077         camwnd.m_selection_button_press_handler = camwnd.m_gl_widget.connect( "button_press_event", G_CALLBACK( selection_button_press ), camwnd.m_window_observer );
1078         camwnd.m_selection_button_release_handler = camwnd.m_gl_widget.connect( "button_release_event", G_CALLBACK( selection_button_release ), camwnd.m_window_observer );
1079         camwnd.m_selection_motion_handler = camwnd.m_gl_widget.connect( "motion_notify_event", G_CALLBACK( DeferredMotion::gtk_motion ), &camwnd.m_deferred_motion );
1080
1081         camwnd.m_freelook_button_press_handler = camwnd.m_gl_widget.connect( "button_press_event", G_CALLBACK( enable_freelook_button_press ), &camwnd );
1082
1083         if ( g_camwindow_globals_private.m_bCamDiscrete ) {
1084                 CamWnd_Move_Discrete_Enable( camwnd );
1085         }
1086         else
1087         {
1088                 CamWnd_Move_Enable( camwnd );
1089         }
1090 }
1091
1092 void CamWnd_Remove_Handlers_Move( CamWnd& camwnd ){
1093         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_selection_button_press_handler );
1094         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_selection_button_release_handler );
1095         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_selection_motion_handler );
1096
1097         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_freelook_button_press_handler );
1098
1099         if ( g_camwindow_globals_private.m_bCamDiscrete ) {
1100                 CamWnd_Move_Discrete_Disable( camwnd );
1101         }
1102         else
1103         {
1104                 CamWnd_Move_Disable( camwnd );
1105         }
1106 }
1107
1108 void CamWnd_Add_Handlers_FreeMove( CamWnd& camwnd ){
1109         camwnd.m_selection_button_press_handler = camwnd.m_gl_widget.connect( "button_press_event", G_CALLBACK( selection_button_press_freemove ), camwnd.m_window_observer );
1110         camwnd.m_selection_button_release_handler = camwnd.m_gl_widget.connect( "button_release_event", G_CALLBACK( selection_button_release_freemove ), camwnd.m_window_observer );
1111         camwnd.m_selection_motion_handler = camwnd.m_gl_widget.connect( "motion_notify_event", G_CALLBACK( selection_motion_freemove ), camwnd.m_window_observer );
1112
1113         camwnd.m_freelook_button_press_handler = camwnd.m_gl_widget.connect( "button_press_event", G_CALLBACK( disable_freelook_button_press ), &camwnd );
1114
1115         KeyEvent_connect( "CameraFreeMoveForward" );
1116         KeyEvent_connect( "CameraFreeMoveBack" );
1117         KeyEvent_connect( "CameraFreeMoveLeft" );
1118         KeyEvent_connect( "CameraFreeMoveRight" );
1119         KeyEvent_connect( "CameraFreeMoveUp" );
1120         KeyEvent_connect( "CameraFreeMoveDown" );
1121 }
1122
1123 void CamWnd_Remove_Handlers_FreeMove( CamWnd& camwnd ){
1124         KeyEvent_disconnect( "CameraFreeMoveForward" );
1125         KeyEvent_disconnect( "CameraFreeMoveBack" );
1126         KeyEvent_disconnect( "CameraFreeMoveLeft" );
1127         KeyEvent_disconnect( "CameraFreeMoveRight" );
1128         KeyEvent_disconnect( "CameraFreeMoveUp" );
1129         KeyEvent_disconnect( "CameraFreeMoveDown" );
1130
1131         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_selection_button_press_handler );
1132         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_selection_button_release_handler );
1133         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_selection_motion_handler );
1134
1135         g_signal_handler_disconnect( G_OBJECT( camwnd.m_gl_widget ), camwnd.m_freelook_button_press_handler );
1136 }
1137
1138 CamWnd::CamWnd() :
1139         m_view( true ),
1140         m_Camera( &m_view, CamWndQueueDraw( *this ) ),
1141         m_cameraview( m_Camera, &m_view, ReferenceCaller<CamWnd, void(), CamWnd_Update>( *this ) ),
1142         m_gl_widget( glwidget_new( TRUE ) ),
1143         m_window_observer( NewWindowObserver() ),
1144         m_XORRectangle( m_gl_widget ),
1145         m_deferredDraw( WidgetQueueDrawCaller( m_gl_widget ) ),
1146         m_deferred_motion( selection_motion, m_window_observer ),
1147         m_selection_button_press_handler( 0 ),
1148         m_selection_button_release_handler( 0 ),
1149         m_selection_motion_handler( 0 ),
1150         m_freelook_button_press_handler( 0 ),
1151         m_drawing( false ){
1152         m_bFreeMove = false;
1153
1154         GlobalWindowObservers_add( m_window_observer );
1155         GlobalWindowObservers_connectWidget( m_gl_widget );
1156
1157         m_window_observer->setRectangleDrawCallback( ReferenceCaller<CamWnd, void(rect_t), camwnd_update_xor_rectangle>( *this ) );
1158         m_window_observer->setView( m_view );
1159
1160         g_object_ref( m_gl_widget._handle );
1161
1162         gtk_widget_set_events( m_gl_widget, GDK_DESTROY | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_SCROLL_MASK );
1163         gtk_widget_set_can_focus( m_gl_widget, true );
1164
1165         m_sizeHandler = m_gl_widget.connect( "size_allocate", G_CALLBACK( camera_size_allocate ), this );
1166         m_exposeHandler = m_gl_widget.on_render( G_CALLBACK( camera_expose ), this );
1167
1168         Map_addValidCallback( g_map, DeferredDrawOnMapValidChangedCaller( m_deferredDraw ) );
1169
1170         CamWnd_registerCommands( *this );
1171
1172         CamWnd_Add_Handlers_Move( *this );
1173
1174         m_gl_widget.connect( "scroll_event", G_CALLBACK( wheelmove_scroll ), this );
1175
1176         AddSceneChangeCallback( ReferenceCaller<CamWnd, void(), CamWnd_Update>( *this ) );
1177
1178         PressedButtons_connect( g_pressedButtons, m_gl_widget );
1179 }
1180
1181 CamWnd::~CamWnd(){
1182         if ( m_bFreeMove ) {
1183                 DisableFreeMove();
1184         }
1185
1186         CamWnd_Remove_Handlers_Move( *this );
1187
1188         g_signal_handler_disconnect( G_OBJECT( m_gl_widget ), m_sizeHandler );
1189         g_signal_handler_disconnect( G_OBJECT( m_gl_widget ), m_exposeHandler );
1190
1191         m_gl_widget.unref();
1192
1193         m_window_observer->release();
1194 }
1195
1196 class FloorHeightWalker : public scene::Graph::Walker
1197 {
1198 float m_current;
1199 float& m_bestUp;
1200 float& m_bestDown;
1201 public:
1202 FloorHeightWalker( float current, float& bestUp, float& bestDown ) :
1203         m_current( current ), m_bestUp( bestUp ), m_bestDown( bestDown ){
1204         bestUp = g_MaxWorldCoord;
1205         bestDown = -g_MaxWorldCoord;
1206 }
1207 bool pre( const scene::Path& path, scene::Instance& instance ) const {
1208         if ( path.top().get().visible()
1209                  && Node_isBrush( path.top() ) ) { // this node is a floor
1210                 const AABB& aabb = instance.worldAABB();
1211                 float floorHeight = aabb.origin.z() + aabb.extents.z();
1212                 if ( floorHeight > m_current && floorHeight < m_bestUp ) {
1213                         m_bestUp = floorHeight;
1214                 }
1215                 if ( floorHeight < m_current && floorHeight > m_bestDown ) {
1216                         m_bestDown = floorHeight;
1217                 }
1218         }
1219         return true;
1220 }
1221 };
1222
1223 void CamWnd::Cam_ChangeFloor( bool up ){
1224         float current = m_Camera.origin[2] - 48;
1225         float bestUp;
1226         float bestDown;
1227         GlobalSceneGraph().traverse( FloorHeightWalker( current, bestUp, bestDown ) );
1228
1229         if ( up && bestUp != g_MaxWorldCoord ) {
1230                 current = bestUp;
1231         }
1232         if ( !up && bestDown != -g_MaxWorldCoord ) {
1233                 current = bestDown;
1234         }
1235
1236         m_Camera.origin[2] = current + 48;
1237         Camera_updateModelview( getCamera() );
1238         CamWnd_Update( *this );
1239         CameraMovedNotify();
1240 }
1241
1242
1243 #if 0
1244
1245 // button_press
1246 Sys_GetCursorPos( &m_PositionDragCursorX, &m_PositionDragCursorY );
1247
1248 // motion
1249 if ( ( m_bFreeMove && ( buttons == ( RAD_CONTROL | RAD_SHIFT ) ) )
1250          || ( !m_bFreeMove && ( buttons == ( RAD_RBUTTON | RAD_CONTROL ) ) ) ) {
1251         Cam_PositionDrag();
1252         CamWnd_Update( camwnd );
1253         CameraMovedNotify();
1254         return;
1255 }
1256
1257 void CamWnd::Cam_PositionDrag(){
1258         int x, y;
1259
1260         Sys_GetCursorPos( m_gl_widget, &x, &y );
1261         if ( x != m_PositionDragCursorX || y != m_PositionDragCursorY ) {
1262                 x -= m_PositionDragCursorX;
1263                 vector3_add( m_Camera.origin, vector3_scaled( m_Camera.vright, x ) );
1264                 y -= m_PositionDragCursorY;
1265                 m_Camera.origin[2] -= y;
1266                 Camera_updateModelview();
1267                 CamWnd_Update( camwnd );
1268                 CameraMovedNotify();
1269
1270                 Sys_SetCursorPos( m_gl_widget, m_PositionDragCursorX, m_PositionDragCursorY );
1271         }
1272 }
1273 #endif
1274
1275
1276 // NOTE TTimo if there's an OS-level focus out of the application
1277 //   then we can release the camera cursor grab
1278 static gboolean camwindow_freemove_focusout( ui::Widget widget, GdkEventFocus* event, gpointer data ){
1279         reinterpret_cast<CamWnd*>( data )->DisableFreeMove();
1280         return FALSE;
1281 }
1282
1283 void CamWnd::EnableFreeMove(){
1284         //globalOutputStream() << "EnableFreeMove\n";
1285
1286         ASSERT_MESSAGE( !m_bFreeMove, "EnableFreeMove: free-move was already enabled" );
1287         m_bFreeMove = true;
1288         Camera_clearMovementFlags( getCamera(), MOVE_ALL );
1289
1290         CamWnd_Remove_Handlers_Move( *this );
1291         CamWnd_Add_Handlers_FreeMove( *this );
1292
1293         gtk_window_set_focus( m_parent, m_gl_widget );
1294         m_freemove_handle_focusout = m_gl_widget.connect( "focus_out_event", G_CALLBACK( camwindow_freemove_focusout ), this );
1295         m_freezePointer.freeze_pointer( m_gl_widget, Camera_motionDelta, &m_Camera );
1296
1297         CamWnd_Update( *this );
1298 }
1299
1300 void CamWnd::DisableFreeMove(){
1301         //globalOutputStream() << "DisableFreeMove\n";
1302
1303         ASSERT_MESSAGE( m_bFreeMove, "DisableFreeMove: free-move was not enabled" );
1304         m_bFreeMove = false;
1305         Camera_clearMovementFlags( getCamera(), MOVE_ALL );
1306
1307         CamWnd_Remove_Handlers_FreeMove( *this );
1308         CamWnd_Add_Handlers_Move( *this );
1309
1310         m_freezePointer.unfreeze_pointer( m_gl_widget );
1311         g_signal_handler_disconnect( G_OBJECT( m_gl_widget ), m_freemove_handle_focusout );
1312
1313         CamWnd_Update( *this );
1314 }
1315
1316
1317 #include "renderer.h"
1318
1319 class CamRenderer : public Renderer
1320 {
1321 struct state_type
1322 {
1323         state_type() : m_highlight( 0 ), m_state( 0 ), m_lights( 0 ){
1324         }
1325         unsigned int m_highlight;
1326         Shader* m_state;
1327         const LightList* m_lights;
1328 };
1329
1330 std::vector<state_type> m_state_stack;
1331 RenderStateFlags m_globalstate;
1332 Shader* m_state_select0;
1333 Shader* m_state_select1;
1334 const Vector3& m_viewer;
1335
1336 public:
1337 CamRenderer( RenderStateFlags globalstate, Shader* select0, Shader* select1, const Vector3& viewer ) :
1338         m_globalstate( globalstate ),
1339         m_state_select0( select0 ),
1340         m_state_select1( select1 ),
1341         m_viewer( viewer ){
1342         ASSERT_NOTNULL( select0 );
1343         ASSERT_NOTNULL( select1 );
1344         m_state_stack.push_back( state_type() );
1345 }
1346
1347 void SetState( Shader* state, EStyle style ){
1348         ASSERT_NOTNULL( state );
1349         if ( style == eFullMaterials ) {
1350                 m_state_stack.back().m_state = state;
1351         }
1352 }
1353 EStyle getStyle() const {
1354         return eFullMaterials;
1355 }
1356 void PushState(){
1357         m_state_stack.push_back( m_state_stack.back() );
1358 }
1359 void PopState(){
1360         ASSERT_MESSAGE( !m_state_stack.empty(), "popping empty stack" );
1361         m_state_stack.pop_back();
1362 }
1363 void Highlight( EHighlightMode mode, bool bEnable = true ){
1364         ( bEnable )
1365         ? m_state_stack.back().m_highlight |= mode
1366                                                                                   : m_state_stack.back().m_highlight &= ~mode;
1367 }
1368 void setLights( const LightList& lights ){
1369         m_state_stack.back().m_lights = &lights;
1370 }
1371 void addRenderable( const OpenGLRenderable& renderable, const Matrix4& world ){
1372         if ( m_state_stack.back().m_highlight & ePrimitive ) {
1373                 m_state_select0->addRenderable( renderable, world, m_state_stack.back().m_lights );
1374         }
1375         if ( m_state_stack.back().m_highlight & eFace ) {
1376                 m_state_select1->addRenderable( renderable, world, m_state_stack.back().m_lights );
1377         }
1378
1379         m_state_stack.back().m_state->addRenderable( renderable, world, m_state_stack.back().m_lights );
1380 }
1381
1382 void render( const Matrix4& modelview, const Matrix4& projection ){
1383         GlobalShaderCache().render( m_globalstate, modelview, projection, m_viewer );
1384 }
1385 };
1386
1387 /*
1388    ==============
1389    Cam_Draw
1390    ==============
1391  */
1392
1393 void ShowStatsToggle(){
1394         g_camwindow_globals_private.m_showStats ^= 1;
1395 }
1396
1397 void ShowStatsExport( const Callback<void(bool)> &importer ){
1398         importer( g_camwindow_globals_private.m_showStats );
1399 }
1400
1401 FreeCaller<void(const Callback<void(bool)>&), ShowStatsExport> g_show_stats_caller;
1402 Callback<void(const Callback<void(bool)> &)> g_show_stats_callback( g_show_stats_caller );
1403 ToggleItem g_show_stats( g_show_stats_callback );
1404
1405 void CamWnd::Cam_Draw(){
1406         glViewport( 0, 0, m_Camera.width, m_Camera.height );
1407 #if 0
1408         GLint viewprt[4];
1409         glGetIntegerv( GL_VIEWPORT, viewprt );
1410 #endif
1411
1412         // enable depth buffer writes
1413         glDepthMask( GL_TRUE );
1414         glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
1415
1416         Vector3 clearColour( 0, 0, 0 );
1417         if ( m_Camera.draw_mode != cd_lighting ) {
1418                 clearColour = g_camwindow_globals.color_cameraback;
1419         }
1420
1421         glClearColor( clearColour[0], clearColour[1], clearColour[2], 0 );
1422         glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
1423
1424         extern void Renderer_ResetStats();
1425         Renderer_ResetStats();
1426         extern void Cull_ResetStats();
1427         Cull_ResetStats();
1428
1429         glMatrixMode( GL_PROJECTION );
1430         glLoadMatrixf( reinterpret_cast<const float*>( &m_Camera.projection ) );
1431
1432         glMatrixMode( GL_MODELVIEW );
1433         glLoadMatrixf( reinterpret_cast<const float*>( &m_Camera.modelview ) );
1434
1435
1436         // one directional light source directly behind the viewer
1437         {
1438                 GLfloat inverse_cam_dir[4], ambient[4], diffuse[4]; //, material[4];
1439
1440                 ambient[0] = ambient[1] = ambient[2] = 0.4f;
1441                 ambient[3] = 1.0f;
1442                 diffuse[0] = diffuse[1] = diffuse[2] = 0.4f;
1443                 diffuse[3] = 1.0f;
1444                 //material[0] = material[1] = material[2] = 0.8f;
1445                 //material[3] = 1.0f;
1446
1447                 inverse_cam_dir[0] = m_Camera.vpn[0];
1448                 inverse_cam_dir[1] = m_Camera.vpn[1];
1449                 inverse_cam_dir[2] = m_Camera.vpn[2];
1450                 inverse_cam_dir[3] = 0;
1451
1452                 glLightfv( GL_LIGHT0, GL_POSITION, inverse_cam_dir );
1453
1454                 glLightfv( GL_LIGHT0, GL_AMBIENT, ambient );
1455                 glLightfv( GL_LIGHT0, GL_DIFFUSE, diffuse );
1456
1457                 glEnable( GL_LIGHT0 );
1458         }
1459
1460
1461         unsigned int globalstate = RENDER_DEPTHTEST | RENDER_COLOURWRITE | RENDER_DEPTHWRITE | RENDER_ALPHATEST | RENDER_BLEND | RENDER_CULLFACE | RENDER_COLOURARRAY | RENDER_OFFSETLINE | RENDER_POLYGONSMOOTH | RENDER_LINESMOOTH | RENDER_FOG | RENDER_COLOURCHANGE;
1462         switch ( m_Camera.draw_mode )
1463         {
1464         case cd_wire:
1465                 break;
1466         case cd_solid:
1467                 globalstate |= RENDER_FILL
1468                                            | RENDER_LIGHTING
1469                                            | RENDER_SMOOTH
1470                                            | RENDER_SCALED;
1471                 break;
1472         case cd_texture:
1473                 globalstate |= RENDER_FILL
1474                                            | RENDER_LIGHTING
1475                                            | RENDER_TEXTURE
1476                                            | RENDER_SMOOTH
1477                                            | RENDER_SCALED;
1478                 break;
1479         case cd_lighting:
1480                 globalstate |= RENDER_FILL
1481                                            | RENDER_LIGHTING
1482                                            | RENDER_TEXTURE
1483                                            | RENDER_SMOOTH
1484                                            | RENDER_SCALED
1485                                            | RENDER_BUMP
1486                                            | RENDER_PROGRAM
1487                                            | RENDER_SCREEN;
1488                 break;
1489         default:
1490                 globalstate = 0;
1491                 break;
1492         }
1493
1494         if ( !g_xywindow_globals.m_bNoStipple ) {
1495                 globalstate |= RENDER_LINESTIPPLE | RENDER_POLYGONSTIPPLE;
1496         }
1497
1498         {
1499                 CamRenderer renderer( globalstate, m_state_select2, m_state_select1, m_view.getViewer() );
1500
1501                 Scene_Render( renderer, m_view );
1502
1503                 renderer.render( m_Camera.modelview, m_Camera.projection );
1504         }
1505
1506         // prepare for 2d stuff
1507         glColor4f( 1, 1, 1, 1 );
1508         glDisable( GL_BLEND );
1509         glMatrixMode( GL_PROJECTION );
1510         glLoadIdentity();
1511         glOrtho( 0, (float)m_Camera.width, 0, (float)m_Camera.height, -100, 100 );
1512         glScalef( 1, -1, 1 );
1513         glTranslatef( 0, -(float)m_Camera.height, 0 );
1514         glMatrixMode( GL_MODELVIEW );
1515         glLoadIdentity();
1516
1517         if ( GlobalOpenGL().GL_1_3() ) {
1518                 glClientActiveTexture( GL_TEXTURE0 );
1519                 glActiveTexture( GL_TEXTURE0 );
1520         }
1521
1522         glDisableClientState( GL_TEXTURE_COORD_ARRAY );
1523         glDisableClientState( GL_NORMAL_ARRAY );
1524         glDisableClientState( GL_COLOR_ARRAY );
1525
1526         glDisable( GL_TEXTURE_2D );
1527         glDisable( GL_LIGHTING );
1528         glDisable( GL_COLOR_MATERIAL );
1529         glDisable( GL_DEPTH_TEST );
1530         glColor3f( 1.f, 1.f, 1.f );
1531         glLineWidth( 1 );
1532
1533         // draw the crosshair
1534         if ( m_bFreeMove ) {
1535                 glBegin( GL_LINES );
1536                 glVertex2f( (float)m_Camera.width / 2.f, (float)m_Camera.height / 2.f + 6 );
1537                 glVertex2f( (float)m_Camera.width / 2.f, (float)m_Camera.height / 2.f + 2 );
1538                 glVertex2f( (float)m_Camera.width / 2.f, (float)m_Camera.height / 2.f - 6 );
1539                 glVertex2f( (float)m_Camera.width / 2.f, (float)m_Camera.height / 2.f - 2 );
1540                 glVertex2f( (float)m_Camera.width / 2.f + 6, (float)m_Camera.height / 2.f );
1541                 glVertex2f( (float)m_Camera.width / 2.f + 2, (float)m_Camera.height / 2.f );
1542                 glVertex2f( (float)m_Camera.width / 2.f - 6, (float)m_Camera.height / 2.f );
1543                 glVertex2f( (float)m_Camera.width / 2.f - 2, (float)m_Camera.height / 2.f );
1544                 glEnd();
1545         }
1546
1547         if ( g_camwindow_globals_private.m_showStats ) {
1548                 glRasterPos3f( 1.0f, static_cast<float>( m_Camera.height ) - GlobalOpenGL().m_font->getPixelDescent(), 0.0f );
1549                 extern const char* Renderer_GetStats();
1550                 GlobalOpenGL().drawString( Renderer_GetStats() );
1551
1552                 glRasterPos3f( 1.0f, static_cast<float>( m_Camera.height ) - GlobalOpenGL().m_font->getPixelDescent() - GlobalOpenGL().m_font->getPixelHeight(), 0.0f );
1553                 extern const char* Cull_GetStats();
1554                 GlobalOpenGL().drawString( Cull_GetStats() );
1555         }
1556
1557         // bind back to the default texture so that we don't have problems
1558         // elsewhere using/modifying texture maps between contexts
1559         glBindTexture( GL_TEXTURE_2D, 0 );
1560 }
1561
1562 void CamWnd::draw(){
1563         m_drawing = true;
1564
1565         //globalOutputStream() << "draw...\n";
1566         if ( glwidget_make_current( m_gl_widget ) != FALSE ) {
1567                 if ( Map_Valid( g_map ) && ScreenUpdates_Enabled() ) {
1568                         GlobalOpenGL_debugAssertNoErrors();
1569                         Cam_Draw();
1570                         GlobalOpenGL_debugAssertNoErrors();
1571                         //qglFinish();
1572
1573                         m_XORRectangle.set( rectangle_t() );
1574                 }
1575
1576                 glwidget_swap_buffers( m_gl_widget );
1577         }
1578
1579         m_drawing = false;
1580 }
1581
1582 void CamWnd::BenchMark(){
1583         double dStart = Sys_DoubleTime();
1584         for ( int i = 0 ; i < 100 ; i++ )
1585         {
1586                 Vector3 angles;
1587                 angles[CAMERA_ROLL] = 0;
1588                 angles[CAMERA_PITCH] = 0;
1589                 angles[CAMERA_YAW] = static_cast<float>( i * ( 360.0 / 100.0 ) );
1590                 Camera_setAngles( *this, angles );
1591         }
1592         double dEnd = Sys_DoubleTime();
1593         globalOutputStream() << FloatFormat( dEnd - dStart, 5, 2 ) << " seconds\n";
1594 }
1595
1596
1597 void fill_view_camera_menu( ui::Menu menu ){
1598         create_check_menu_item_with_mnemonic( menu, "Camera View", "ToggleCamera" );
1599 }
1600
1601 void GlobalCamera_ResetAngles(){
1602         CamWnd& camwnd = *g_camwnd;
1603         Vector3 angles;
1604         angles[CAMERA_ROLL] = angles[CAMERA_PITCH] = 0;
1605         angles[CAMERA_YAW] = static_cast<float>( 22.5 * floor( ( Camera_getAngles( camwnd )[CAMERA_YAW] + 11 ) / 22.5 ) );
1606         Camera_setAngles( camwnd, angles );
1607 }
1608
1609 void Camera_ChangeFloorUp(){
1610         CamWnd& camwnd = *g_camwnd;
1611         camwnd.Cam_ChangeFloor( true );
1612 }
1613
1614 void Camera_ChangeFloorDown(){
1615         CamWnd& camwnd = *g_camwnd;
1616         camwnd.Cam_ChangeFloor( false );
1617 }
1618
1619 void Camera_CubeIn(){
1620         CamWnd& camwnd = *g_camwnd;
1621         g_camwindow_globals.m_nCubicScale--;
1622         if ( g_camwindow_globals.m_nCubicScale < 1 ) {
1623                 g_camwindow_globals.m_nCubicScale = 1;
1624         }
1625         Camera_updateProjection( camwnd.getCamera() );
1626         CamWnd_Update( camwnd );
1627         g_pParentWnd->SetGridStatus();
1628 }
1629
1630 void Camera_CubeOut(){
1631         CamWnd& camwnd = *g_camwnd;
1632         g_camwindow_globals.m_nCubicScale++;
1633         if ( g_camwindow_globals.m_nCubicScale > 23 ) {
1634                 g_camwindow_globals.m_nCubicScale = 23;
1635         }
1636         Camera_updateProjection( camwnd.getCamera() );
1637         CamWnd_Update( camwnd );
1638         g_pParentWnd->SetGridStatus();
1639 }
1640
1641 bool Camera_GetFarClip(){
1642         return g_camwindow_globals_private.m_bCubicClipping;
1643 }
1644
1645 ConstReferenceCaller<bool, void(const Callback<void(bool)> &), PropertyImpl<bool>::Export> g_getfarclip_caller( g_camwindow_globals_private.m_bCubicClipping );
1646 ToggleItem g_getfarclip_item( g_getfarclip_caller );
1647
1648 void Camera_SetFarClip( bool value ){
1649         CamWnd& camwnd = *g_camwnd;
1650         g_camwindow_globals_private.m_bCubicClipping = value;
1651         g_getfarclip_item.update();
1652         Camera_updateProjection( camwnd.getCamera() );
1653         CamWnd_Update( camwnd );
1654 }
1655
1656 struct Camera_FarClip {
1657         static void Export(const Callback<void(bool)> &returnz) {
1658                 returnz(g_camwindow_globals_private.m_bCubicClipping);
1659         }
1660
1661         static void Import(bool value) {
1662                 Camera_SetFarClip(value);
1663         }
1664 };
1665
1666 void Camera_ToggleFarClip(){
1667         Camera_SetFarClip( !Camera_GetFarClip() );
1668 }
1669
1670
1671 void CamWnd_constructToolbar( ui::Toolbar toolbar ){
1672         toolbar_append_toggle_button( toolbar, "Cubic clip the camera view (\\)", "view_cubicclipping.png", "ToggleCubicClip" );
1673 }
1674
1675 void CamWnd_registerShortcuts(){
1676         toggle_add_accelerator( "ToggleCubicClip" );
1677
1678         if ( g_pGameDescription->mGameType == "doom3" ) {
1679                 command_connect_accelerator( "TogglePreview" );
1680         }
1681
1682         command_connect_accelerator( "CameraSpeedInc" );
1683         command_connect_accelerator( "CameraSpeedDec" );
1684 }
1685
1686
1687 void GlobalCamera_Benchmark(){
1688         CamWnd& camwnd = *g_camwnd;
1689         camwnd.BenchMark();
1690 }
1691
1692 void GlobalCamera_Update(){
1693         CamWnd& camwnd = *g_camwnd;
1694         CamWnd_Update( camwnd );
1695 }
1696
1697 camera_draw_mode CamWnd_GetMode(){
1698         return camera_t::draw_mode;
1699 }
1700 void CamWnd_SetMode( camera_draw_mode mode ){
1701         ShaderCache_setBumpEnabled( mode == cd_lighting );
1702         camera_t::draw_mode = mode;
1703         if ( g_camwnd != 0 ) {
1704                 CamWnd_Update( *g_camwnd );
1705         }
1706 }
1707
1708 void CamWnd_TogglePreview( void ){
1709         // gametype must be doom3 for this function to work
1710         // if the gametype is not doom3 something is wrong with the
1711         // global command list or somebody else calls this function.
1712         ASSERT_MESSAGE( g_pGameDescription->mGameType == "doom3", "CamWnd_TogglePreview called although mGameType is not doom3 compatible" );
1713
1714         // switch between textured and lighting mode
1715         CamWnd_SetMode( ( CamWnd_GetMode() == cd_lighting ) ? cd_texture : cd_lighting );
1716 }
1717
1718
1719 CameraModel* g_camera_model = 0;
1720
1721 void CamWnd_LookThroughCamera( CamWnd& camwnd ){
1722         if ( g_camera_model != 0 ) {
1723                 CamWnd_Add_Handlers_Move( camwnd );
1724                 g_camera_model->setCameraView( 0, Callback<void()>() );
1725                 g_camera_model = 0;
1726                 Camera_updateModelview( camwnd.getCamera() );
1727                 Camera_updateProjection( camwnd.getCamera() );
1728                 CamWnd_Update( camwnd );
1729         }
1730 }
1731
1732 inline CameraModel* Instance_getCameraModel( scene::Instance& instance ){
1733         return InstanceTypeCast<CameraModel>::cast( instance );
1734 }
1735
1736 void CamWnd_LookThroughSelected( CamWnd& camwnd ){
1737         if ( g_camera_model != 0 ) {
1738                 CamWnd_LookThroughCamera( camwnd );
1739         }
1740
1741         if ( GlobalSelectionSystem().countSelected() != 0 ) {
1742                 scene::Instance& instance = GlobalSelectionSystem().ultimateSelected();
1743                 CameraModel* cameraModel = Instance_getCameraModel( instance );
1744                 if ( cameraModel != 0 ) {
1745                         CamWnd_Remove_Handlers_Move( camwnd );
1746                         g_camera_model = cameraModel;
1747                         g_camera_model->setCameraView( &camwnd.getCameraView(), ReferenceCaller<CamWnd, void(), CamWnd_LookThroughCamera>( camwnd ) );
1748                 }
1749         }
1750 }
1751
1752 void GlobalCamera_LookThroughSelected(){
1753         CamWnd_LookThroughSelected( *g_camwnd );
1754 }
1755
1756 void GlobalCamera_LookThroughCamera(){
1757         CamWnd_LookThroughCamera( *g_camwnd );
1758 }
1759
1760 struct RenderMode {
1761         static void Export(const Callback<void(int)> &returnz) {
1762                 switch (CamWnd_GetMode()) {
1763                         case cd_wire:
1764                                 returnz(0);
1765                                 break;
1766                         case cd_solid:
1767                                 returnz(1);
1768                                 break;
1769                         case cd_texture:
1770                                 returnz(2);
1771                                 break;
1772                         case cd_lighting:
1773                                 returnz(3);
1774                                 break;
1775                 }
1776         }
1777
1778         static void Import(int value) {
1779                 switch (value) {
1780                         case 0:
1781                                 CamWnd_SetMode(cd_wire);
1782                                 break;
1783                         case 1:
1784                                 CamWnd_SetMode(cd_solid);
1785                                 break;
1786                         case 2:
1787                                 CamWnd_SetMode(cd_texture);
1788                                 break;
1789                         case 3:
1790                                 CamWnd_SetMode(cd_lighting);
1791                                 break;
1792                         default:
1793                                 CamWnd_SetMode(cd_texture);
1794                 }
1795         }
1796 };
1797
1798 void Camera_constructPreferences( PreferencesPage& page ){
1799         page.appendSlider( "Movement Speed", g_camwindow_globals_private.m_nMoveSpeed, TRUE, 0, 0, 100, MIN_CAM_SPEED, MAX_CAM_SPEED, 1, 10 );
1800         page.appendCheckBox( "", "Link strafe speed to movement speed", g_camwindow_globals_private.m_bCamLinkSpeed );
1801         page.appendSlider( "Rotation Speed", g_camwindow_globals_private.m_nAngleSpeed, TRUE, 0, 0, 3, 1, 180, 1, 10 );
1802         page.appendCheckBox( "", "Invert mouse vertical axis", g_camwindow_globals_private.m_bCamInverseMouse );
1803         page.appendCheckBox(
1804                 "", "Discrete movement",
1805                 make_property<CamWnd_Move_Discrete>()
1806                 );
1807         page.appendCheckBox(
1808                 "", "Enable far-clip plane",
1809                 make_property<Camera_FarClip>()
1810                 );
1811
1812         if ( g_pGameDescription->mGameType == "doom3" ) {
1813                 const char* render_mode[] = { "Wireframe", "Flatshade", "Textured", "Lighting" };
1814
1815                 page.appendCombo(
1816                         "Render Mode",
1817                         STRING_ARRAY_RANGE( render_mode ),
1818                         make_property<RenderMode>()
1819                         );
1820         }
1821         else
1822         {
1823                 const char* render_mode[] = { "Wireframe", "Flatshade", "Textured" };
1824
1825                 page.appendCombo(
1826                         "Render Mode",
1827                         STRING_ARRAY_RANGE( render_mode ),
1828                         make_property<RenderMode>()
1829                         );
1830         }
1831
1832         const char* strafe_mode[] = { "Both", "Forward", "Up" };
1833
1834         page.appendCombo(
1835                 "Strafe Mode",
1836                 g_camwindow_globals_private.m_nStrafeMode,
1837                 STRING_ARRAY_RANGE( strafe_mode )
1838                 );
1839 }
1840 void Camera_constructPage( PreferenceGroup& group ){
1841         PreferencesPage page( group.createPage( "Camera", "Camera View Preferences" ) );
1842         Camera_constructPreferences( page );
1843 }
1844 void Camera_registerPreferencesPage(){
1845         PreferencesDialog_addSettingsPage( makeCallbackF(Camera_constructPage) );
1846 }
1847
1848 #include "preferencesystem.h"
1849 #include "stringio.h"
1850 #include "dialog.h"
1851
1852 void CameraSpeed_increase(){
1853         if ( g_camwindow_globals_private.m_nMoveSpeed <= ( MAX_CAM_SPEED - CAM_SPEED_STEP - 10 ) ) {
1854                 g_camwindow_globals_private.m_nMoveSpeed += CAM_SPEED_STEP;
1855         }
1856         else {
1857                 g_camwindow_globals_private.m_nMoveSpeed = MAX_CAM_SPEED - 10;
1858         }
1859 }
1860
1861 void CameraSpeed_decrease(){
1862         if ( g_camwindow_globals_private.m_nMoveSpeed >= ( MIN_CAM_SPEED + CAM_SPEED_STEP ) ) {
1863                 g_camwindow_globals_private.m_nMoveSpeed -= CAM_SPEED_STEP;
1864         }
1865         else {
1866                 g_camwindow_globals_private.m_nMoveSpeed = MIN_CAM_SPEED;
1867         }
1868 }
1869
1870 /// \brief Initialisation for things that have the same lifespan as this module.
1871 void CamWnd_Construct(){
1872         GlobalCommands_insert( "CenterView", makeCallbackF(GlobalCamera_ResetAngles), Accelerator( GDK_KEY_End ) );
1873
1874         GlobalToggles_insert( "ToggleCubicClip", makeCallbackF(Camera_ToggleFarClip), ToggleItem::AddCallbackCaller( g_getfarclip_item ), Accelerator( '\\', (GdkModifierType)GDK_CONTROL_MASK ) );
1875         GlobalCommands_insert( "CubicClipZoomIn", makeCallbackF(Camera_CubeIn), Accelerator( '[', (GdkModifierType)GDK_CONTROL_MASK ) );
1876         GlobalCommands_insert( "CubicClipZoomOut", makeCallbackF(Camera_CubeOut), Accelerator( ']', (GdkModifierType)GDK_CONTROL_MASK ) );
1877
1878         GlobalCommands_insert( "UpFloor", makeCallbackF(Camera_ChangeFloorUp), Accelerator( GDK_KEY_Prior ) );
1879         GlobalCommands_insert( "DownFloor", makeCallbackF(Camera_ChangeFloorDown), Accelerator( GDK_KEY_Next ) );
1880
1881         GlobalToggles_insert( "ToggleCamera", ToggleShown::ToggleCaller( g_camera_shown ), ToggleItem::AddCallbackCaller( g_camera_shown.m_item ), Accelerator( 'C', (GdkModifierType)( GDK_SHIFT_MASK | GDK_CONTROL_MASK ) ) );
1882         GlobalCommands_insert( "LookThroughSelected", makeCallbackF(GlobalCamera_LookThroughSelected) );
1883         GlobalCommands_insert( "LookThroughCamera", makeCallbackF(GlobalCamera_LookThroughCamera) );
1884
1885         if ( g_pGameDescription->mGameType == "doom3" ) {
1886                 GlobalCommands_insert( "TogglePreview", makeCallbackF(CamWnd_TogglePreview), Accelerator( GDK_KEY_F3 ) );
1887         }
1888
1889         GlobalCommands_insert( "CameraSpeedInc", makeCallbackF(CameraSpeed_increase), Accelerator( GDK_KEY_KP_Add, (GdkModifierType)GDK_SHIFT_MASK ) );
1890         GlobalCommands_insert( "CameraSpeedDec", makeCallbackF(CameraSpeed_decrease), Accelerator( GDK_KEY_KP_Subtract, (GdkModifierType)GDK_SHIFT_MASK ) );
1891
1892         GlobalShortcuts_insert( "CameraForward", Accelerator( GDK_KEY_Up ) );
1893         GlobalShortcuts_insert( "CameraBack", Accelerator( GDK_KEY_Down ) );
1894         GlobalShortcuts_insert( "CameraLeft", Accelerator( GDK_KEY_Left ) );
1895         GlobalShortcuts_insert( "CameraRight", Accelerator( GDK_KEY_Right ) );
1896         GlobalShortcuts_insert( "CameraStrafeRight", Accelerator( GDK_KEY_period ) );
1897         GlobalShortcuts_insert( "CameraStrafeLeft", Accelerator( GDK_KEY_comma ) );
1898
1899         GlobalShortcuts_insert( "CameraUp", Accelerator( 'D' ) );
1900         GlobalShortcuts_insert( "CameraDown", Accelerator( 'C' ) );
1901         GlobalShortcuts_insert( "CameraAngleUp", Accelerator( 'A' ) );
1902         GlobalShortcuts_insert( "CameraAngleDown", Accelerator( 'Z' ) );
1903
1904         GlobalShortcuts_insert( "CameraFreeMoveForward", Accelerator( GDK_KEY_Up ) );
1905         GlobalShortcuts_insert( "CameraFreeMoveBack", Accelerator( GDK_KEY_Down ) );
1906         GlobalShortcuts_insert( "CameraFreeMoveLeft", Accelerator( GDK_KEY_Left ) );
1907         GlobalShortcuts_insert( "CameraFreeMoveRight", Accelerator( GDK_KEY_Right ) );
1908
1909         GlobalToggles_insert( "ShowStats", makeCallbackF(ShowStatsToggle), ToggleItem::AddCallbackCaller( g_show_stats ) );
1910
1911         GlobalPreferenceSystem().registerPreference( "ShowStats", make_property_string( g_camwindow_globals_private.m_showStats ) );
1912         GlobalPreferenceSystem().registerPreference( "MoveSpeed", make_property_string( g_camwindow_globals_private.m_nMoveSpeed ) );
1913         GlobalPreferenceSystem().registerPreference( "CamLinkSpeed", make_property_string( g_camwindow_globals_private.m_bCamLinkSpeed ) );
1914         GlobalPreferenceSystem().registerPreference( "AngleSpeed", make_property_string( g_camwindow_globals_private.m_nAngleSpeed ) );
1915         GlobalPreferenceSystem().registerPreference( "CamInverseMouse", make_property_string( g_camwindow_globals_private.m_bCamInverseMouse ) );
1916         GlobalPreferenceSystem().registerPreference( "CamDiscrete", make_property_string<CamWnd_Move_Discrete>());
1917         GlobalPreferenceSystem().registerPreference( "CubicClipping", make_property_string( g_camwindow_globals_private.m_bCubicClipping ) );
1918         GlobalPreferenceSystem().registerPreference( "CubicScale", make_property_string( g_camwindow_globals.m_nCubicScale ) );
1919         GlobalPreferenceSystem().registerPreference( "SI_Colors4", make_property_string( g_camwindow_globals.color_cameraback ) );
1920         GlobalPreferenceSystem().registerPreference( "SI_Colors12", make_property_string( g_camwindow_globals.color_selbrushes3d ) );
1921         GlobalPreferenceSystem().registerPreference( "CameraRenderMode", make_property_string<RenderMode>() );
1922         GlobalPreferenceSystem().registerPreference( "StrafeMode", make_property_string( g_camwindow_globals_private.m_nStrafeMode ) );
1923
1924         CamWnd_constructStatic();
1925
1926         Camera_registerPreferencesPage();
1927 }
1928 void CamWnd_Destroy(){
1929         CamWnd_destroyStatic();
1930 }