src/Cockpit/hud.cxx

   1 // hud.cxx -- hud defines and prototypes
   2 //
   3 // Written by Michele America, started September 1997.
   4 //
   5 // Copyright (C) 1997  Michele F. America  - micheleamerica@geocities.com
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License as
   9 // published by the Free Software Foundation; either version 2 of the
  10 // License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 // General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with this program; if not, write to the Free Software
  19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 //
  21 // $Id$
  22
  23 #include <simgear/compiler.h>
  24 #include <simgear/misc/exception.hxx>
  25
  26 #ifdef HAVE_CONFIG_H
  27 #  include <config.h>
  28 #endif
  29
  30 #ifdef HAVE_WINDOWS_H
  31 #  include <windows.h>
  32 #endif
  33
  34 #ifdef __BORLANDC__
  35 #  define exception c_exception
  36 #endif
  37 #include <math.h>
  38
  39 #include <GL/glut.h>
  40 #include <stdlib.h>
  41 #include STL_STRING
  42 #include STL_FSTREAM
  43
  44 #include <simgear/constants.h>
  45 #include <simgear/debug/logstream.hxx>
  46 #include <simgear/misc/props.hxx>
  47 //#include <simgear/math/fg_random.h>
  48 //#include <simgear/math/polar3d.hxx>
  49
  50 #include <Aircraft/aircraft.hxx>
  51 #include <Autopilot/newauto.hxx>
  52 #include <GUI/gui.h>
  53 #include <Main/globals.hxx>
  54 #include <Main/fg_props.hxx>
  55 #include <Main/viewmgr.hxx>
  56 #ifdef FG_NETWORK_OLK
  57 #include <NetworkOLK/network.h>
  58 #endif
  59 #include <Scenery/scenery.hxx>
  60 //#include <Time/fg_timer.hxx>
  61
  62 #if defined ( __sun__ ) || defined ( __sgi )
  63 extern "C" {
  64   extern void *memmove(void *, const void *, size_t);
  65 }
  66 #endif
  67
  68 #include "hud.hxx"
  69
  70 static char units[5];
  71
  72 // The following routines obtain information concerning the aircraft's
  73 // current state and return it to calling instrument display routines.
  74 // They should eventually be member functions of the aircraft.
  75 //
  76
  77 deque< instr_item * > HUD_deque;
  78
  79 fgTextList         HUD_TextList;
  80 fgLineList         HUD_LineList;
  81 fgLineList         HUD_StippleLineList;
  82
  83 fntRenderer *HUDtext = 0;
  84 float  HUD_TextSize = 0;
  85 int HUD_style = 0;
  86
  87 float HUD_matrix[16];
  88 static float hud_trans_alpha = 0.67f;
  89
  90
  91 //$$$ begin - added, Neetha, 28 Nov 2k
  92
  93 static string   name;
  94 static int              x;
  95 static int              y;
  96 static UINT    width;
  97 static UINT    height;
  98 static float    factor;
  99 static float   span_units;
 100 static float   division_units;
 101 static float   minor_division = 0;
 102 static UINT    screen_hole;
 103 static UINT    lbl_pos;
 104 static bool    working;
 105 static string  loadfn;
 106 static UINT     options;
 107 static float   maxValue;
 108 static float   minValue;
 109 static float   scaling;
 110 static UINT    major_divs;
 111 static UINT    minor_divs;
 112 static UINT    modulator;
 113 static int     dp_showing = 0;
 114 static string  label_format;
 115 static string  prelabel;
 116 static string  postlabel;
 117 static int     justi;
 118 static int              blinking;
 119 static float   maxBankAngle;
 120 static float   maxSlipAngle;
 121 static UINT    gap_width;
 122 static bool     latitude;
 123 static bool     longitude;
 124 static bool     tick_bottom;
 125 static bool     tick_top;
 126 static bool     tick_right;
 127 static bool     tick_left;
 128 static bool     cap_bottom;
 129 static bool     cap_top;
 130 static bool     cap_right;
 131 static bool     cap_left;
 132 static float   marker_off;
 133 static string  type;
 134 static bool    enable_pointer;
 135 static string  type_pointer;
 136 static bool    frl_spot;
 137 static bool     target;
 138 static bool    vel_vector;
 139 static bool    drift;
 140 static bool    alpha;
 141 static bool     energy;
 142 static bool     climb_dive;
 143 static bool     glide;
 144 static float    glide_slope_val;
 145 static bool     worm_energy;
 146 static bool     waypoint;
 147
 148 static FLTFNPTR load_fn;
 149 static fgLabelJust justification;
 150 static const char *pre_label_string  = 0;
 151 static const char *post_label_string = 0;
 152
 153 int readHud( istream &input );
 154 int readInstrument ( const SGPropertyNode * node);
 155 static instr_item * readLadder ( const SGPropertyNode * node);
 156 static instr_item * readCard ( const SGPropertyNode * node);
 157 static instr_item * readLabel( const SGPropertyNode * node);
 158 static instr_item * readTBI( const SGPropertyNode * node);
 159 //$$$ end   - added, Neetha, 28 Nov 2k
 160
 161 void fgHUDalphaInit( void );
 162
 163 class locRECT {
 164   public:
 165     RECT rect;
 166
 167     locRECT( UINT left, UINT top, UINT right, UINT bottom);
 168     RECT get_rect(void) { return rect;}
 169 };
 170
 171 locRECT :: locRECT( UINT left, UINT top, UINT right, UINT bottom)
 172 {
 173   rect.left   =  left;
 174   rect.top    =  top;
 175   rect.right  =  right;
 176   rect.bottom =  bottom;
 177
 178 }
 179 // #define DEBUG
 180
 181 #ifdef OLD_CODE
 182 void drawOneLine( UINT x1, UINT y1, UINT x2, UINT y2)
 183 {
 184   glBegin(GL_LINES);
 185   glVertex2f(x1, y1);
 186   glVertex2f(x2, y2);
 187   glEnd();
 188 }
 189
 190 void drawOneLine( RECT &rect)
 191 {
 192   glBegin(GL_LINES);
 193   glVertex2f(rect.left, rect.top);
 194   glVertex2f(rect.right, rect.bottom);
 195   glEnd();
 196 }
 197
 198 //
 199 // The following code deals with painting the "instrument" on the display
 200 //
 201    /* textString - Bitmap font string */
 202
 203 void textString( int x, int y, char *msg, void *font ){
 204
 205     if(*msg)
 206     {
 207 //      puDrawString (  NULL, msg, x, y );
 208         glRasterPos2f(x, y);
 209         while (*msg) {
 210             glutBitmapCharacter(font, *msg);
 211             msg++;
 212         }
 213     }
 214 }
 215
 216
 217 /* strokeString - Stroke font string */
 218 void strokeString(int x, int y, char *msg, void *font, float theta)
 219 {
 220     int xx;
 221     int yy;
 222     int c;
 223     float sintheta,costheta;
 224
 225
 226     if(*msg)
 227     {
 228     glPushMatrix();
 229     glRotatef(theta * SGD_RADIANS_TO_DEGREES, 0.0, 0.0, 1.0);
 230     sintheta = sin(theta);
 231     costheta = cos(theta);
 232     xx = (int)(x * costheta + y * sintheta);
 233     yy = (int)(y * costheta - x * sintheta);
 234     glTranslatef( xx, yy, 0);
 235     glScalef(.1, .1, 0.0);
 236     while( (c=*msg++) ) {
 237         glutStrokeCharacter(font, c);
 238     }
 239     glPopMatrix();
 240     }
 241 }
 242
 243 int getStringWidth ( char *str )
 244 {
 245     if ( HUDtext && str )
 246     {
 247         float r, l ;
 248         guiFntHandle->getBBox ( str, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
 249         return FloatToInt( r - l );
 250     }
 251     return 0 ;
 252 }
 253 #endif // OLD_CODE
 254
 255 //========================= End of Class Implementations===================
 256 // fgHUDInit
 257 //
 258 // Constructs a HUD object and then adds in instruments. At the present
 259 // the instruments are hard coded into the routine. Ultimately these need
 260 // to be defined by the aircraft's instrumentation records so that the
 261 // display for a Piper Cub doesn't show the speed range of a North American
 262 // mustange and the engine readouts of a B36!
 263 //
 264
 265 #define INSTRDEFS 21
 266
 267 //$$$ begin - added, Neetha, 28 Nov 2k
 268 static instr_item *
 269 readLadder(const SGPropertyNode * node)
 270 {
 271
 272         instr_item *p;
 273
 274                                 name                    = node->getStringValue("name");
 275                                 x                               = node->getIntValue("x");
 276                                 y                               = node->getIntValue("y");
 277                                 width                   = node->getIntValue("width");
 278                                 height                  = node->getIntValue("height");
 279                                 factor                  = node->getFloatValue("compression_factor");
 280                                 span_units              = node->getFloatValue("span_units");
 281                                 division_units  = node->getFloatValue("division_units");
 282                                 screen_hole             = node->getIntValue("screen_hole");
 283                                 lbl_pos                 = node->getIntValue("lbl_pos");
 284                                 frl_spot                = node->getBoolValue("enable_frl",false);
 285                                 target                  = node->getBoolValue("enable_target_spot",false);
 286                                 vel_vector              = node->getBoolValue("enable_velocity_vector",false);
 287                                 drift                   = node->getBoolValue("enable_drift_marker",false);
 288                                 alpha                   = node->getBoolValue("enable_alpha_bracket",false);
 289                                 energy                  = node->getBoolValue("enable_energy_marker",false);
 290                                 climb_dive              = node->getBoolValue("enable_climb_dive_marker",false);
 291                                 glide                   = node->getBoolValue("enable_glide_slope_marker",false);
 292                                 glide_slope_val = node->getFloatValue("glide_slope",-4.0);
 293                                 worm_energy             = node->getBoolValue("enable_energy_marker",false);
 294                                 waypoint                = node->getBoolValue("enable_waypoint_marker",false);
 295                                 working                 = node->getBoolValue("working");
 296
 297                                 SG_LOG(SG_INPUT, SG_INFO, "Done reading instrument " << name);
 298
 299
 300                                 p = (instr_item *) new HudLadder( name, x, y,
 301                                         width, height, factor,
 302                                                                                 get_roll, get_pitch,
 303                                                                                 span_units, division_units, minor_division,
 304                                                                                 screen_hole, lbl_pos, frl_spot, target, vel_vector,
 305                                                                                 drift, alpha, energy, climb_dive,
 306                                                                                 glide, glide_slope_val, worm_energy,
 307                                                                                 waypoint, working);
 308
 309                                 return p;
 310
 311 } //end readLadder
 312
 313 static instr_item *
 314 readCard(const SGPropertyNode * node)
 315 {
 316
 317         instr_item *p;
 318
 319                                 name                    = node->getStringValue("name");
 320                                 x                               = node->getIntValue("x");
 321                                 y                               = node->getIntValue("y");
 322                                 width                   = node->getIntValue("width");
 323                                 height                  = node->getIntValue("height");
 324                                 loadfn                  = node->getStringValue("loadfn");
 325                                 options                 = node->getIntValue("options");
 326                                 maxValue                = node->getFloatValue("maxValue");
 327                                 minValue                = node->getFloatValue("minValue");
 328                                 scaling                 = node->getFloatValue("disp_scaling");
 329                                 major_divs              = node->getIntValue("major_divs");
 330                                 minor_divs              = node->getIntValue("minor_divs");
 331                                 modulator               = node->getIntValue("modulator");
 332                                 span_units              = node->getFloatValue("value_span");
 333                                 type                    = node->getStringValue("type");
 334                                 tick_bottom         = node->getBoolValue("tick_bottom",false);
 335                                 tick_top                = node->getBoolValue("tick_top",false);
 336                                 tick_right              = node->getBoolValue("tick_right",false);
 337                                 tick_left               = node->getBoolValue("tick_left",false);
 338                                 cap_bottom              = node->getBoolValue("cap_bottom",false);
 339                                 cap_top                 = node->getBoolValue("cap_top",false);
 340                                 cap_right               = node->getBoolValue("cap_right",false);
 341                                 cap_left                = node->getBoolValue("cap_left",false);
 342                                 marker_off              = node->getFloatValue("marker_offset",0.0);
 343                                 enable_pointer  = node->getBoolValue("enable_pointer",true);
 344                                 type_pointer    = node->getStringValue("pointer_type");
 345                                 working                 = node->getBoolValue("working");
 346
 347
 348                                 SG_LOG(SG_INPUT, SG_INFO, "Done reading instrument " << name);
 349
 350
 351                                 if(type=="guage")
 352                                         span_units = maxValue - minValue;
 353
 354                                 if(loadfn=="anzg")
 355                                         load_fn = get_anzg;
 356                                 else
 357                                 if(loadfn=="heading")
 358                                         load_fn = get_heading;
 359                                 else
 360                                 if(loadfn=="aoa")
 361                                         load_fn = get_aoa;
 362                                 else
 363                                 if(loadfn=="climb")
 364                                         load_fn = get_climb_rate;
 365                                 else
 366                                 if(loadfn=="altitude")
 367                                         load_fn = get_altitude;
 368                                 else
 369                                 if(loadfn=="agl")
 370                                         load_fn = get_agl;
 371                                 else
 372                                 if(loadfn=="speed")
 373                                         load_fn = get_speed;
 374                                 else
 375                                 if(loadfn=="view_direction")
 376                                         load_fn = get_view_direction;
 377                                 else
 378                                 if(loadfn=="aileronval")
 379                                         load_fn = get_aileronval;
 380                                 else
 381                                 if(loadfn=="elevatorval")
 382                                         load_fn = get_elevatorval;
 383                                 else
 384                                 if(loadfn=="rudderval")
 385                                         load_fn = get_rudderval;
 386                                 else
 387                                 if(loadfn=="throttleval")
 388                                         load_fn = get_throttleval;
 389
 390
 391                                 p = (instr_item *) new hud_card(        x,
 392                                                                                                                 y,
 393                                                                                                                 width,
 394                                                                                                                 height,
 395                                                                             load_fn,
 396                                                                                                                 options,
 397                                                                                                                 maxValue, minValue,
 398                                                                                                                 scaling,
 399                                                                                                                 major_divs, minor_divs,
 400                                                                                                                 modulator,
 401                                                                                                                 dp_showing,
 402                                                                                                                 span_units,
 403                                                                                                                 type,
 404                                                                                                                 tick_bottom,
 405                                                                                                                 tick_top,
 406                                                                                                                 tick_right,
 407                                                                                                                 tick_left,
 408                                                                                                                 cap_bottom,
 409                                                                                                                 cap_top,
 410                                                                                                                 cap_right,
 411                                                                                                                 cap_left,
 412                                                                                                                 marker_off,
 413                                                                                                                 enable_pointer,
 414                                                                                                                 type_pointer,
 415                                                                                                                 working);
 416                                         return p;
 417 }// end readCard
 418
 419 static instr_item *
 420 readLabel(const SGPropertyNode * node)
 421 {
 422         instr_item *p;
 423
 424         int font_size = (fgGetInt("/sim/startup/xsize") > 1000) ? LARGE : SMALL;
 425
 426         name                            = node->getStringValue("name");
 427         x                   = node->getIntValue("x");
 428         y                   = node->getIntValue("y");
 429         width               = node->getIntValue("width");
 430         height                          = node->getIntValue("height");
 431         loadfn                          = node->getStringValue("data_source");
 432         label_format            = node->getStringValue("label_format");
 433         prelabel                        = node->getStringValue("pre_label_string");
 434         postlabel                       = node->getStringValue("post_label_string");
 435         scaling                         = node->getFloatValue("scale_data");
 436         options                         = node->getIntValue("options");
 437         justi                           = node->getIntValue("justification");
 438         blinking            = node->getIntValue("blinking");
 439         latitude                        = node->getBoolValue("latitude",false);
 440         longitude                       = node->getBoolValue("longitude",false);
 441         working             = node->getBoolValue("working");
 442
 443
 444         SG_LOG(SG_INPUT, SG_INFO, "Done reading instrument " << name);
 445
 446
 447         if ( justi == 0 ) {
 448             justification = LEFT_JUST;
 449         } else {
 450             if ( justi == 1 ) {
 451                 justification = CENTER_JUST;
 452             } else {
 453                 if ( justi == 2 ) {
 454                     justification = RIGHT_JUST;
 455                 }
 456             }
 457         }
 458
 459         if ( prelabel == "NULL" ) {
 460             pre_label_string = NULL;
 461         } else {
 462             if ( prelabel == "blank" ) {
 463                 pre_label_string = " ";
 464             } else {
 465                 pre_label_string = prelabel.c_str();
 466             }
 467         }
 468
 469         if ( postlabel == "blank" ) {
 470             post_label_string = " ";
 471         } else {
 472             if ( postlabel == "NULL" ) {
 473                 post_label_string = NULL;
 474             } else {
 475                 if ( postlabel == "units" ) {
 476                     post_label_string = units;
 477                 } else {
 478                     post_label_string = postlabel.c_str();
 479                 }
 480             }
 481         }
 482
 483         if ( loadfn == "aux16" ) {
 484             load_fn = get_aux16;
 485         } else if ( loadfn == "aux17" ) {
 486             load_fn = get_aux17;
 487         } else if ( loadfn == "aux9" ) {
 488             load_fn = get_aux9;
 489         } else if ( loadfn == "aux11" ) {
 490             load_fn = get_aux11;
 491         } else if ( loadfn == "aux12" ) {
 492             load_fn = get_aux12;
 493         } else if ( loadfn == "aux10" ) {
 494             load_fn = get_aux10;
 495         } else if ( loadfn == "aux13" ) {
 496             load_fn = get_aux13;
 497         } else if ( loadfn == "aux14" ) {
 498             load_fn = get_aux14;
 499         } else if ( loadfn == "aux15" ) {
 500             load_fn = get_aux15;
 501         } else if ( loadfn == "aux8" ) {
 502             load_fn = get_aux8;
 503         } else if ( loadfn == "ax" ) {
 504             load_fn = get_Ax;
 505         } else if ( loadfn == "speed" ) {
 506             load_fn = get_speed;
 507         } else if ( loadfn == "mach" ) {
 508             load_fn = get_mach;
 509         } else if ( loadfn == "altitude" ) {
 510             load_fn = get_altitude;
 511         } else if ( loadfn == "agl" ) {
 512             load_fn = get_agl;
 513         } else if ( loadfn == "framerate" ) {
 514             load_fn = get_frame_rate;
 515         } else if ( loadfn == "heading" ) {
 516             load_fn = get_heading;
 517         } else if ( loadfn == "fov" ) {
 518             load_fn = get_fov;
 519         } else if ( loadfn == "vfc_tris_culled" ) {
 520             load_fn = get_vfc_tris_culled;
 521         } else if ( loadfn == "vfc_tris_drawn" ) {
 522             load_fn = get_vfc_tris_drawn;
 523         } else if ( loadfn == "aoa" ) {
 524             load_fn = get_aoa;
 525         } else if ( loadfn == "latitude" ) {
 526             load_fn  = get_latitude;
 527         } else if ( loadfn == "longitude" ) {
 528             load_fn   = get_longitude;
 529         }
 530
 531         p = (instr_item *) new instr_label ( x,
 532                                              y,
 533                                              width,
 534                                              height,
 535                                              load_fn,
 536                                              label_format.c_str(),
 537                                              pre_label_string,
 538                                              post_label_string,
 539                                              scaling,
 540                                              options,
 541                                              justification,
 542                                              font_size,
 543                                              blinking,
 544                                              latitude,
 545                                              longitude,
 546                                              working);
 547
 548         return p;
 549 } // end readLabel
 550
 551 static instr_item *
 552 readTBI(const SGPropertyNode * node)
 553 {
 554
 555         instr_item *p;
 556
 557         name           = node->getStringValue("name");
 558         x              = node->getIntValue("x");
 559         y              = node->getIntValue("y");
 560         width          = node->getIntValue("width");
 561         height         = node->getIntValue("height");
 562         maxBankAngle   = node->getFloatValue("maxBankAngle");
 563         maxSlipAngle   = node->getFloatValue("maxSlipAngle");
 564         gap_width      = node->getIntValue("gap_width");
 565         working        = node->getBoolValue("working");
 566
 567         SG_LOG(SG_INPUT, SG_INFO, "Done reading instrument " << name);
 568
 569
 570         p = (instr_item *) new fgTBI_instr(     x,
 571                                                 y,
 572                                                 width,
 573                                                 height,
 574                                                 get_roll,
 575                                                 get_sideslip,
 576                                                 maxBankAngle,
 577                                                 maxSlipAngle,
 578                                                 gap_width,
 579                                                 working);
 580
 581         return p;
 582 } //end readTBI
 583
 584
 585 int readInstrument(const SGPropertyNode * node)
 586 {
 587
 588     instr_item *HIptr;
 589
 590     if ( fgGetString("/sim/startup/units") == "feet" ) {
 591         strcpy(units, " ft");
 592     } else {
 593         strcpy(units, " m");
 594     }
 595
 596     const SGPropertyNode * ladder_group = node->getNode("ladders");
 597
 598     if (ladder_group != 0) {
 599         int nLadders = ladder_group->nChildren();
 600         for (int j = 0; j < nLadders; j++) {
 601
 602             HIptr = readLadder(ladder_group->getChild(j));
 603             HUD_deque.insert( HUD_deque.begin(), HIptr);
 604
 605         }// for - ladders
 606     }
 607
 608     const SGPropertyNode * card_group = node->getNode("cards");
 609     if (card_group != 0) {
 610         int nCards = card_group->nChildren();
 611         for (int j = 0; j < nCards; j++) {
 612
 613             HIptr = readCard(card_group->getChild(j));
 614             HUD_deque.insert( HUD_deque.begin(), HIptr);
 615
 616         }//for - cards
 617     }
 618
 619     const SGPropertyNode * label_group = node->getNode("labels");
 620     if (label_group != 0) {
 621         int nLabels = label_group->nChildren();
 622         for (int j = 0; j < nLabels; j++) {
 623
 624             HIptr = readLabel(label_group->getChild(j));
 625             HUD_deque.insert( HUD_deque.begin(), HIptr);
 626
 627         }//for - labels
 628     }
 629
 630     const SGPropertyNode * tbi_group = node->getNode("tbis");
 631     if (tbi_group != 0) {
 632         int nTbis = tbi_group->nChildren();
 633         for (int j = 0; j < nTbis; j++) {
 634
 635             HIptr = readTBI(tbi_group->getChild(j));
 636             HUD_deque.insert( HUD_deque.begin(), HIptr);
 637
 638         }//for - tbis
 639     }
 640     return 0;
 641 }//end readinstrument
 642
 643
 644 int readHud( istream &input )
 645 {
 646
 647     SGPropertyNode root;
 648
 649     try {
 650       readProperties(input, &root);
 651     } catch (const sg_io_exception &e) {
 652       string message = "Error reading HUD: ";
 653       message += e.getMessage();
 654       message += "\n at ";
 655       message += e.getLocation().asString();
 656       SG_LOG(SG_INPUT, SG_ALERT, message);
 657       mkDialog(message.c_str());
 658       return 0;
 659     }
 660
 661
 662     SG_LOG(SG_INPUT, SG_INFO, "Read properties for  " <<
 663            root.getStringValue("name"));
 664
 665
 666     HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());  // empty the HUD deque
 667
 668
 669     SG_LOG(SG_INPUT, SG_INFO, "Reading Hud instruments");
 670
 671     const SGPropertyNode * instrument_group = root.getChild("instruments");
 672     int nInstruments = instrument_group->nChildren();
 673
 674     for (int i = 0; i < nInstruments; i++) {
 675
 676         const SGPropertyNode * node = instrument_group->getChild(i);
 677
 678         SGPath path( globals->get_fg_root() );
 679         path.append(node->getStringValue("path"));
 680
 681         SG_LOG(SG_INPUT, SG_INFO, "Reading Instrument "
 682                << node->getName()
 683                << " from "
 684                << path.str());
 685
 686
 687         SGPropertyNode root2;
 688         try {
 689           readProperties(path.str(), &root2);
 690         } catch (const sg_io_exception &e) {
 691           string message = "Error reading HUD instrument: ";
 692           message += e.getMessage();
 693           message += "\n at ";
 694           message += e.getLocation().asString();
 695           SG_LOG(SG_INPUT, SG_ALERT, message);
 696           mkDialog(message.c_str());
 697           continue;
 698         }
 699         readInstrument(&root2);
 700     }//for loop(i)
 701
 702     return 0;
 703 }
 704
 705
 706 int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ )
 707 {
 708
 709
 710     HUD_style = 1;
 711
 712     SG_LOG( SG_COCKPIT, SG_INFO, "Initializing current aircraft HUD" );
 713
 714     string hud_path =
 715         fgGetString("/sim/hud/path", "Huds/Default/default.xml");
 716     SGPath path(globals->get_fg_root());
 717     path.append(hud_path);
 718
 719     ifstream input(path.c_str());
 720     if (!input.good())
 721         {
 722             SG_LOG(SG_INPUT, SG_ALERT,
 723                    "Cannot read Hud configuration from " << path.str());
 724         }
 725     else
 726         {
 727             readHud(input);
 728             input.close();
 729         }
 730
 731     fgHUDalphaInit();
 732     fgHUDReshape();
 733
 734     return 0;  // For now. Later we may use this for an error code.
 735
 736 }
 737
 738 int fgHUDInit2( fgAIRCRAFT * /* current_aircraft */ )
 739 {
 740
 741     HUD_style = 2;
 742
 743     SG_LOG( SG_COCKPIT, SG_INFO, "Initializing current aircraft HUD" );
 744
 745     SGPath path(globals->get_fg_root());
 746     path.append("Huds/Minimal/default.xml");
 747
 748
 749     ifstream input(path.c_str());
 750     if (!input.good()) {
 751         SG_LOG(SG_INPUT, SG_ALERT,
 752                "Cannot read Hud configuration from " << path.str());
 753     }
 754     else {
 755         readHud(input);
 756         input.close();
 757     }
 758
 759     return 0;  // For now. Later we may use this for an error code.
 760
 761 }
 762 //$$$ End - added, Neetha, 28 Nov 2k
 763
 764 static int global_day_night_switch = DAY;
 765
 766 void HUD_masterswitch( bool incr )
 767 {
 768     if ( fgGetBool("/sim/hud/visibility") ) {
 769         if ( global_day_night_switch == DAY ) {
 770             global_day_night_switch = NIGHT;
 771         } else {
 772             fgSetBool("/sim/hud/visibility", false);
 773         }
 774     } else {
 775         fgSetBool("/sim/hud/visibility", true);
 776         global_day_night_switch = DAY;
 777     }
 778 }
 779
 780 void HUD_brightkey( bool incr_bright )
 781 {
 782     instr_item *pHUDInstr = HUD_deque[0];
 783     int brightness        = pHUDInstr->get_brightness();
 784
 785     if( fgGetBool("/sim/hud/visibility") ) {
 786         if( incr_bright ) {
 787             switch (brightness)
 788                 {
 789                 case BRT_LIGHT:
 790                     brightness = BRT_BLACK;
 791                     break;
 792
 793                 case BRT_MEDIUM:
 794                     brightness = BRT_LIGHT;
 795                     break;
 796
 797                 case BRT_DARK:
 798                     brightness = BRT_MEDIUM;
 799                     break;
 800
 801                 case BRT_BLACK:
 802                     brightness = BRT_DARK;
 803                     break;
 804
 805                 default:
 806                     brightness = BRT_BLACK;
 807                 }
 808         } else {
 809             switch (brightness)
 810                 {
 811                 case BRT_LIGHT:
 812                     brightness = BRT_MEDIUM;
 813                     break;
 814
 815                 case BRT_MEDIUM:
 816                     brightness = BRT_DARK;
 817                     break;
 818
 819                 case BRT_DARK:
 820                     brightness = BRT_BLACK;
 821                     break;
 822
 823                 case BRT_BLACK:
 824                     brightness = BRT_LIGHT;
 825                     break;
 826
 827                 default:
 828                     fgSetBool("/sim/hud/visibility", false);
 829                 }
 830         }
 831     } else {
 832         fgSetBool("/sim/hud/visibility", true);
 833     }
 834
 835     pHUDInstr->SetBrightness( brightness );
 836 }
 837
 838
 839 #define fgAP_CLAMP(val,min,max) ( (val) = (val) > (max) ? (max) : (val) < (min) ? (min) : (val) )
 840
 841 static puDialogBox *HUDalphaDialog;
 842 static puText      *HUDalphaText;
 843 static puSlider    *HUDalphaHS0;
 844 //static puText      *HUDtextText;
 845 //static puSlider    *HUDalphaHS1;
 846 static char         SliderText[2][ 8 ];
 847
 848 static void alpha_adj( puObject *hs ) {
 849     float val ;
 850
 851     hs-> getValue ( &val ) ;
 852     fgAP_CLAMP ( val, 0.1, 1.0 ) ;
 853     // printf ( "maxroll_adj( %p ) %f %f\n", hs, val, MaxRollAdjust * val ) ;
 854     hud_trans_alpha = val;
 855     sprintf( SliderText[ 0 ], "%05.2f", hud_trans_alpha );
 856     HUDalphaText -> setLabel ( SliderText[ 0 ] ) ;
 857 }
 858
 859 void fgHUDalphaAdjust( puObject * ) {
 860     fgSetBool("/sim/hud/antialiased", true);
 861     FG_PUSH_PUI_DIALOG( HUDalphaDialog );
 862 }
 863
 864 static void goAwayHUDalphaAdjust (puObject *)
 865 {
 866     FG_POP_PUI_DIALOG( HUDalphaDialog );
 867 }
 868
 869 static void cancelHUDalphaAdjust (puObject *)
 870 {
 871     fgSetBool("/sim/hud/antialiased", false);
 872     FG_POP_PUI_DIALOG( HUDalphaDialog );
 873 }
 874
 875 // Done once at system initialization
 876 void fgHUDalphaInit( void ) {
 877
 878     //  printf("fgHUDalphaInit\n");
 879 #define HORIZONTAL  FALSE
 880
 881     int DialogX = 40;
 882     int DialogY = 100;
 883     int DialogWidth = 240;
 884
 885     char Label[] =  "HUD Adjuster";
 886     char *s;
 887
 888     int labelX = (DialogWidth / 2) -
 889         (puGetStringWidth( puGetDefaultLabelFont(), Label ) / 2);
 890
 891     int nSliders = 1;
 892     int slider_x = 10;
 893     int slider_y = 55;
 894     int slider_width = 220;
 895     int slider_title_x = 15;
 896     int slider_value_x = 160;
 897     float slider_delta = 0.05f;
 898
 899     puFont HUDalphaLegendFont;
 900     puFont HUDalphaLabelFont;
 901     puGetDefaultFonts ( &HUDalphaLegendFont, &HUDalphaLabelFont );
 902
 903     HUDalphaDialog = new puDialogBox ( DialogX, DialogY ); {
 904         int horiz_slider_height = puGetStringHeight (HUDalphaLabelFont) +
 905             puGetStringDescender (HUDalphaLabelFont) +
 906             PUSTR_TGAP + PUSTR_BGAP + 5;
 907
 908         /* puFrame *
 909             HUDalphaFrame = new puFrame ( 0, 0, DialogWidth,
 910                                           85 + nSliders
 911                                           * horiz_slider_height ); */
 912
 913         puText *
 914             HUDalphaDialogMessage = new puText ( labelX,
 915                                                  52 + nSliders
 916                                                  * horiz_slider_height );
 917         HUDalphaDialogMessage -> setDefaultValue ( Label );
 918         HUDalphaDialogMessage -> getDefaultValue ( &s );
 919         HUDalphaDialogMessage -> setLabel        ( s );
 920
 921         HUDalphaHS0 = new puSlider ( slider_x, slider_y,
 922                                      slider_width, HORIZONTAL ) ;
 923         HUDalphaHS0->     setDelta ( slider_delta ) ;
 924         HUDalphaHS0->     setValue ( hud_trans_alpha ) ;
 925         HUDalphaHS0->    setCBMode ( PUSLIDER_DELTA ) ;
 926         HUDalphaHS0->  setCallback ( alpha_adj ) ;
 927
 928         puText *
 929             HUDalphaTitle =      new puText ( slider_title_x, slider_y ) ;
 930         HUDalphaTitle-> setDefaultValue ( "Alpha" ) ;
 931         HUDalphaTitle-> getDefaultValue ( &s ) ;
 932         HUDalphaTitle->        setLabel ( s ) ;
 933
 934         HUDalphaText = new puText ( slider_value_x, slider_y ) ;
 935         sprintf( SliderText[ 0 ], "%05.2f", hud_trans_alpha );
 936         HUDalphaText-> setLabel ( SliderText[ 0 ] ) ;
 937
 938         puOneShot *
 939             HUDalphaOkButton =     new puOneShot ( 10, 10, 60, 45 );
 940         HUDalphaOkButton->         setLegend ( gui_msg_OK );
 941         HUDalphaOkButton-> makeReturnDefault ( TRUE );
 942         HUDalphaOkButton->       setCallback ( goAwayHUDalphaAdjust );
 943
 944         puOneShot *
 945             HUDalphaNoButton = new puOneShot ( 160, 10, 230, 45 );
 946         HUDalphaNoButton->     setLegend ( gui_msg_CANCEL );
 947         HUDalphaNoButton->   setCallback ( cancelHUDalphaAdjust );
 948     }
 949     FG_FINALIZE_PUI_DIALOG( HUDalphaDialog );
 950
 951 #undef HORIZONTAL
 952 }
 953
 954
 955 void fgHUDReshape(void) {
 956     if ( HUDtext ) {
 957         // this chunk of code is not necessarily thread safe if the
 958         // compiler optimizer reorders these statements.  Note that
 959         // "delete ptr" does not set "ptr = NULL".  We have to do that
 960         // ourselves.
 961         fntRenderer *tmp = HUDtext;
 962         HUDtext = NULL;
 963         delete tmp;
 964     }
 965
 966     HUD_TextSize = fgGetInt("/sim/startup/xsize") / 60;
 967     HUD_TextSize = 10;
 968     HUDtext = new fntRenderer();
 969     HUDtext -> setFont      ( guiFntHandle ) ;
 970     HUDtext -> setPointSize ( HUD_TextSize ) ;
 971     HUD_TextList.setFont( HUDtext );
 972 }
 973
 974
 975 static void set_hud_color(float r, float g, float b) {
 976     fgGetBool("/sim/hud/antialiased") ?
 977         glColor4f(r,g,b,hud_trans_alpha) :
 978         glColor3f(r,g,b);
 979 }
 980
 981
 982 // fgUpdateHUD
 983 //
 984 // Performs a once around the list of calls to instruments installed in
 985 // the HUD object with requests for redraw. Kinda. It will when this is
 986 // all C++.
 987 //
 988 void fgUpdateHUD( void ) {
 989
 990     static const float normal_aspect = float(640) / float(480);
 991     // note: win_ratio is Y/X
 992     float current_aspect = 1.0f/globals->get_current_view()->get_win_ratio();
 993     if( current_aspect > normal_aspect ) {
 994         float aspect_adjust = current_aspect / normal_aspect;
 995         float adjust = 320.0f*aspect_adjust - 320.0f;
 996         fgUpdateHUD( -adjust, 0.0f, 640.0f+adjust, 480.0f );
 997     } else {
 998         float aspect_adjust = normal_aspect / current_aspect;
 999         float adjust = 240.0f*aspect_adjust - 240.0f;
1000         fgUpdateHUD( 0.0f, -adjust, 640.0f, 480.0f+adjust );
1001     }
1002 }
1003
1004 void fgUpdateHUD( GLfloat x_start, GLfloat y_start,
1005                   GLfloat x_end, GLfloat y_end )
1006 {
1007   int brightness;
1008   // int day_night_sw = current_aircraft.controls->day_night_switch;
1009   int day_night_sw = global_day_night_switch;
1010   int hud_displays = HUD_deque.size();
1011   instr_item *pHUDInstr;
1012   // float line_width;
1013
1014   if( !hud_displays ) {  // Trust everyone, but ALWAYS cut the cards!
1015     return;
1016     }
1017
1018   HUD_TextList.erase();
1019   HUD_LineList.erase();
1020   // HUD_StippleLineList.erase();
1021
1022   pHUDInstr = HUD_deque[0];
1023   brightness = pHUDInstr->get_brightness();
1024   // brightness = HUD_deque.at(0)->get_brightness();
1025
1026   glMatrixMode(GL_PROJECTION);
1027   glPushMatrix();
1028
1029   glLoadIdentity();
1030   gluOrtho2D(x_start, x_end, y_start, y_end);
1031   glMatrixMode(GL_MODELVIEW);
1032   glPushMatrix();
1033   glLoadIdentity();
1034
1035   glDisable(GL_DEPTH_TEST);
1036   glDisable(GL_LIGHTING);
1037
1038   static const SGPropertyNode * antialiased_node
1039       = fgGetNode("/sim/hud/antialiased");
1040
1041   if( antialiased_node->getBoolValue() ) {
1042           glEnable(GL_LINE_SMOOTH);
1043 //        glEnable(GL_BLEND);
1044           glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
1045           glHint(GL_LINE_SMOOTH_HINT,GL_DONT_CARE);
1046 //        glHint(GL_LINE_SMOOTH_HINT,GL_NICEST);
1047           glLineWidth(1.5);
1048   } else {
1049           glLineWidth(1.0);
1050   }
1051
1052   if( day_night_sw == DAY) {
1053       switch (brightness)
1054           {
1055           case BRT_LIGHT:
1056               set_hud_color (0.1f, 0.9f, 0.1f);
1057               break;
1058
1059           case BRT_MEDIUM:
1060               set_hud_color (0.1f, 0.7f, 0.0f);
1061               break;
1062
1063           case BRT_DARK:
1064               set_hud_color (0.0f, 0.6f, 0.0f);
1065               break;
1066
1067           case BRT_BLACK:
1068               set_hud_color( 0.0f, 0.0f, 0.0f);
1069               break;
1070
1071           default:
1072               set_hud_color (0.1f, 0.9f, 0.1f);
1073           }
1074   } else {
1075       if( day_night_sw == NIGHT) {
1076           switch (brightness)
1077               {
1078               case BRT_LIGHT:
1079                   set_hud_color (0.9f, 0.1f, 0.1f);
1080                   break;
1081
1082               case BRT_MEDIUM:
1083                   set_hud_color (0.7f, 0.0f, 0.1f);
1084                   break;
1085
1086               case BRT_DARK:
1087                   set_hud_color (0.6f, 0.0f, 0.0f);
1088                   break;
1089
1090               case BRT_BLACK:
1091                   set_hud_color( 0.0f, 0.0f, 0.0f);
1092                   break;
1093
1094               default:
1095                   set_hud_color (0.6f, 0.0f, 0.0f);
1096               }
1097       } else {     // Just in case default
1098           set_hud_color (0.1f, 0.9f, 0.1f);
1099       }
1100   }
1101
1102   deque < instr_item * > :: iterator current = HUD_deque.begin();
1103   deque < instr_item * > :: iterator last = HUD_deque.end();
1104
1105   for ( ; current != last; ++current ) {
1106           pHUDInstr = *current;
1107
1108           if( pHUDInstr->enabled()) {
1109                   //  fgPrintf( SG_COCKPIT, SG_DEBUG, "HUD Code %d  Status %d\n",
1110                   //            hud->code, hud->status );
1111                   pHUDInstr->draw();
1112
1113           }
1114   }
1115
1116   char *gmt_str = get_formated_gmt_time();
1117   HUD_TextList.add( fgText(40, 10, gmt_str) );
1118
1119 #ifdef FG_NETWORK_OLK
1120   if ( net_hud_display ) {
1121       net_hud_update();
1122   }
1123 #endif
1124
1125
1126   // temporary
1127   // extern bool fgAPAltitudeEnabled( void );
1128   // extern bool fgAPHeadingEnabled( void );
1129   // extern bool fgAPWayPointEnabled( void );
1130   // extern char *fgAPget_TargetDistanceStr( void );
1131   // extern char *fgAPget_TargetHeadingStr( void );
1132   // extern char *fgAPget_TargetAltitudeStr( void );
1133   // extern char *fgAPget_TargetLatLonStr( void );
1134
1135   int apY = 480 - 80;
1136   // char scratch[128];
1137   // HUD_TextList.add( fgText( "AUTOPILOT", 20, apY) );
1138   // apY -= 15;
1139   if( current_autopilot->get_HeadingEnabled() ) {
1140       HUD_TextList.add( fgText( 40, apY,
1141                                 current_autopilot->get_TargetHeadingStr()) );
1142       apY -= 15;
1143   }
1144   if( current_autopilot->get_AltitudeEnabled() ) {
1145       HUD_TextList.add( fgText( 40, apY,
1146                                 current_autopilot->get_TargetAltitudeStr()) );
1147       apY -= 15;
1148   }
1149   if( current_autopilot->get_HeadingMode() ==
1150       FGAutopilot::FG_HEADING_WAYPOINT )
1151   {
1152       char *wpstr;
1153       wpstr = current_autopilot->get_TargetWP1Str();
1154       if ( strlen( wpstr ) ) {
1155           HUD_TextList.add( fgText( 40, apY, wpstr ) );
1156           apY -= 15;
1157       }
1158       wpstr = current_autopilot->get_TargetWP2Str();
1159       if ( strlen( wpstr ) ) {
1160           HUD_TextList.add( fgText( 40, apY, wpstr ) );
1161           apY -= 15;
1162       }
1163       wpstr = current_autopilot->get_TargetWP3Str();
1164       if ( strlen( wpstr ) ) {
1165           HUD_TextList.add( fgText( 40, apY, wpstr ) );
1166           apY -= 15;
1167       }
1168   }
1169
1170   HUD_TextList.draw();
1171
1172   HUD_LineList.draw();
1173
1174   // glEnable(GL_LINE_STIPPLE);
1175   // glLineStipple( 1, 0x00FF );
1176   // HUD_StippleLineList.draw();
1177   // glDisable(GL_LINE_STIPPLE);
1178
1179   if( antialiased_node->getBoolValue() ) {
1180       // glDisable(GL_BLEND);
1181       glDisable(GL_LINE_SMOOTH);
1182       glLineWidth(1.0);
1183   }
1184
1185   glEnable(GL_DEPTH_TEST);
1186   glEnable(GL_LIGHTING);
1187   glMatrixMode(GL_PROJECTION);
1188   glPopMatrix();
1189   glMatrixMode(GL_MODELVIEW);
1190   glPopMatrix();
1191 }
1192