X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FCockpit%2Fhud.cxx;h=a8b7f5dd6ffd58611ef08da794846310f0bf3b92;hb=ddda2c68d5000377c7f76193f27ef78645fe316e;hp=d1e3c1f01cbfd705c41b062a0d2add10aa47950b;hpb=540849b9c37cda783182ef87e5ba4b8ad112a6f6;p=flightgear.git

diff --git a/src/Cockpit/hud.cxx b/src/Cockpit/hud.cxx
index d1e3c1f01..a8b7f5dd6 100644
--- a/src/Cockpit/hud.cxx
+++ b/src/Cockpit/hud.cxx
@@ -16,10 +16,15 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
+#include <simgear/compiler.h>
+#include <simgear/structure/exception.hxx>
+
+#include STL_STRING
+#include STL_FSTREAM
 
 #ifdef HAVE_CONFIG_H
 #  include <config.h>
@@ -32,36 +37,32 @@
 #ifdef __BORLANDC__
 #  define exception c_exception
 #endif
+
 #include <math.h>
 
-#include <GL/glut.h>
 #include <stdlib.h>
-#include <string.h>
+#include <stdio.h>              // char related functions
+#include <string.h>             // strcmp()
 
-#ifdef HAVE_VALUES_H
-#  include <values.h>  // for MAXINT
-#endif
+#include SG_GLU_H
+
+#include <simgear/constants.h>
+#include <simgear/debug/logstream.hxx>
+#include <simgear/props/props.hxx>
+#include <simgear/misc/sg_path.hxx>
 
 #include <Aircraft/aircraft.hxx>
-#include <Debug/logstream.hxx>
-#include <GUI/gui.h>
-#include <Include/fg_constants.h>
-#include <Main/options.hxx>
-#include <Math/fg_random.h>
-#include <Math/mat3.h>
-#include <Math/polar3d.hxx>
-#include <Network/network.h>
+#include <Autopilot/xmlauto.hxx>
+#include <GUI/new_gui.hxx>
+#include <Main/globals.hxx>
+#include <Main/fg_props.hxx>
 #include <Scenery/scenery.hxx>
-#include <Time/fg_timer.hxx>
-
-#if defined ( __sun__ ) || defined ( __sgi )
-extern "C" {
-  extern void *memmove(void *, const void *, size_t);
-}
-#endif
 
 #include "hud.hxx"
 
+
+static HUD_Properties *HUD = 0;
+
 static char units[5];
 
 // The following routines obtain information concerning the aircraft's
@@ -75,1060 +76,817 @@ fgTextList         HUD_TextList;
 fgLineList         HUD_LineList;
 fgLineList         HUD_StippleLineList;
 
+fntRenderer *HUDtext = 0;
+fntTexFont *HUD_Font = 0;
+float HUD_TextSize = 0;
+int HUD_style = 0;
+
+float HUD_matrix[16];
+
+
+static string  name;
+static int     x;
+static int     y;
+static UINT    width;
+static UINT    height;
+static float   span_units;
+static bool    working;
+static string  loadfn;
+static UINT    options;
+static float   maxValue;
+static float   minValue;
+static float   scaling;
+static UINT    major_divs;
+static UINT    minor_divs;
+static UINT    modulator;
+static int     dp_showing = 0;
+static string  label_format;
+static string  prelabel;
+static string  postlabel;
+static float   maxBankAngle;
+static float   maxSlipAngle;
+static UINT    gap_width;
+static bool    tick_bottom;
+static bool    tick_top;
+static bool    tick_right;
+static bool    tick_left;
+static bool    cap_bottom;
+static bool    cap_top;
+static bool    cap_right;
+static bool    cap_left;
+static float   marker_off;
+static string  type;
+static bool    enable_pointer;
+static string  type_pointer;
+static string  type_tick;
+static string  length_tick;
+static float   radius;
+static int     divisions;
+static int     zoom;
+static bool    tsi;
+static float   rad;
+
+
+static FLTFNPTR load_fn;
+
+int readHud( istream &input );
+int readInstrument ( const SGPropertyNode * node);
+static instr_item * readCard ( const SGPropertyNode * node);
+static instr_item * readTBI( const SGPropertyNode * node);
+
+static void drawHUD();
+static void fgUpdateHUDVirtual();
+
 class locRECT {
-  public:
+public:
     RECT rect;
 
     locRECT( UINT left, UINT top, UINT right, UINT bottom);
-    RECT get_rect(void) { return rect;}
+    RECT get_rect(void) { return rect; }
 };
 
 locRECT :: locRECT( UINT left, UINT top, UINT right, UINT bottom)
 {
-  rect.left   =  left;
-  rect.top    =  top;
-  rect.right  =  right;
-  rect.bottom =  bottom;
+    rect.left   =  left;
+    rect.top    =  top;
+    rect.right  =  right;
+    rect.bottom =  bottom;
 
 }
 // #define DEBUG
 
-void drawOneLine( UINT x1, UINT y1, UINT x2, UINT y2)
+//========================= End of Class Implementations===================
+// fgHUDInit
+//
+// Constructs a HUD object and then adds in instruments. At the present
+// the instruments are hard coded into the routine. Ultimately these need
+// to be defined by the aircraft's instrumentation records so that the
+// display for a Piper Cub doesn't show the speed range of a North American
+// mustange and the engine readouts of a B36!
+//
+
+static instr_item *
+readCard(const SGPropertyNode * node)
 {
-  glBegin(GL_LINES);
-  glVertex2f(x1, y1);
-  glVertex2f(x2, y2);
-  glEnd();
-}
 
-void drawOneLine( RECT &rect)
+    instr_item *p;
+
+    name               = node->getStringValue("name");
+    x                  = node->getIntValue("x");
+    y                  = node->getIntValue("y");
+    width              = node->getIntValue("width");
+    height             = node->getIntValue("height");
+    loadfn             = node->getStringValue("loadfn");
+    options            = node->getIntValue("options");
+    maxValue           = node->getFloatValue("maxValue");
+    minValue           = node->getFloatValue("minValue");
+    scaling            = node->getFloatValue("disp_scaling");
+    major_divs         = node->getIntValue("major_divs");
+    minor_divs         = node->getIntValue("minor_divs");
+    modulator          = node->getIntValue("modulator");
+    span_units         = node->getFloatValue("value_span");
+    type               = node->getStringValue("type");
+    tick_bottom        = node->getBoolValue("tick_bottom",false);
+    tick_top           = node->getBoolValue("tick_top",false);
+    tick_right         = node->getBoolValue("tick_right",false);
+    tick_left          = node->getBoolValue("tick_left",false);
+    cap_bottom         = node->getBoolValue("cap_bottom",false);
+    cap_top            = node->getBoolValue("cap_top",false);
+    cap_right          = node->getBoolValue("cap_right",false);
+    cap_left           = node->getBoolValue("cap_left",false);
+    marker_off         = node->getFloatValue("marker_offset",0.0);
+    enable_pointer     = node->getBoolValue("enable_pointer",true);
+    type_pointer       = node->getStringValue("pointer_type");
+    type_tick          = node->getStringValue("tick_type"); // 'circle' or 'line'
+    length_tick        = node->getStringValue("tick_length"); // for variable length
+    working            = node->getBoolValue("working");
+    radius             = node->getFloatValue("radius");
+    divisions          = node->getIntValue("divisions");
+    zoom               = node->getIntValue("zoom");
+
+    SG_LOG(SG_INPUT, SG_INFO, "Done reading instrument " << name);
+
+
+    if (type=="gauge") {
+        span_units = maxValue - minValue;
+    }
+
+    if (loadfn=="anzg") {
+        load_fn = get_anzg;
+    } else if (loadfn=="heading") {
+        load_fn = get_heading;
+    } else if (loadfn=="aoa") {
+        load_fn = get_aoa;
+    } else if (loadfn=="climb") {
+        load_fn = get_climb_rate;
+    } else if (loadfn=="altitude") {
+        load_fn = get_altitude;
+    } else if (loadfn=="agl") {
+        load_fn = get_agl;
+    } else if (loadfn=="speed") {
+        load_fn = get_speed;
+    } else if (loadfn=="view_direction") {
+        load_fn = get_view_direction;
+    } else if (loadfn=="aileronval") {
+        load_fn = get_aileronval;
+    } else if (loadfn=="elevatorval") {
+        load_fn = get_elevatorval;
+    } else if (loadfn=="elevatortrimval") {
+        load_fn = get_elev_trimval;
+    } else if (loadfn=="rudderval") {
+        load_fn = get_rudderval;
+    } else if (loadfn=="throttleval") {
+        load_fn = get_throttleval;
+    }
+
+
+    if ( (type == "dial") | (type == "tape") ) {
+        p = (instr_item *) new hud_card( x,
+                                         y,
+                                         width,
+                                         height,
+                                         load_fn,
+                                         options,
+                                         maxValue, minValue,
+                                         scaling,
+                                         major_divs, minor_divs,
+                                         modulator,
+                                         dp_showing,
+                                         span_units,
+                                         type,
+                                         tick_bottom,
+                                         tick_top,
+                                         tick_right,
+                                         tick_left,
+                                         cap_bottom,
+                                         cap_top,
+                                         cap_right,
+                                         cap_left,
+                                         marker_off,
+                                         enable_pointer,
+                                         type_pointer,
+                                         type_tick,
+                                         length_tick,
+                                         working,
+                                         radius,
+                                         divisions,
+                                         zoom
+                                         );
+    } else {
+        p = (instr_item *) new  gauge_instr( x,       // x
+                                             y,       // y
+                                             width,   // width
+                                             height,  // height
+                                             load_fn, // data source
+                                             options,
+                                             scaling,
+                                             maxValue,minValue,
+                                             major_divs, minor_divs,
+                                             dp_showing,
+                                             modulator,
+                                             working);
+    }
+
+    return p;
+}// end readCard
+
+static instr_item *
+readTBI(const SGPropertyNode * node)
 {
-  glBegin(GL_LINES);
-  glVertex2f(rect.left, rect.top);
-  glVertex2f(rect.right, rect.bottom);
-  glEnd();
+
+    instr_item *p;
+
+    name           = node->getStringValue("name");
+    x              = node->getIntValue("x");
+    y              = node->getIntValue("y");
+    width          = node->getIntValue("width");
+    height         = node->getIntValue("height");
+    maxBankAngle   = node->getFloatValue("maxBankAngle");
+    maxSlipAngle   = node->getFloatValue("maxSlipAngle");
+    gap_width      = node->getIntValue("gap_width");
+    working        = node->getBoolValue("working");
+    tsi            = node->getBoolValue("tsi");
+    rad            = node->getFloatValue("rad");
+
+    SG_LOG(SG_INPUT, SG_INFO, "Done reading instrument " << name);
+
+
+    p = (instr_item *) new fgTBI_instr( x,
+                                        y,
+                                        width,
+                                        height,
+                                        get_roll,
+                                        get_sideslip,
+                                        maxBankAngle,
+                                        maxSlipAngle,
+                                        gap_width,
+                                        working,
+                                        tsi,
+                                        rad);
+
+    return p;
+} //end readTBI
+
+static instr_item *
+readRunway(const SGPropertyNode * node) {
+        name     = node->getStringValue("name");
+        x        = node->getIntValue("x");
+        y        = node->getIntValue("y");
+        width    = node->getIntValue("width");
+        height   = node->getIntValue("height");
+        scaling  = node->getDoubleValue("scale");
+        working  = node->getBoolValue("working",true);
+        runway_instr *ri = new runway_instr(x,y,width,height,scaling,working);
+        double scale = node->getDoubleValue("arrow_scale",1.0);
+        ri->setDrawArrow((scale>0)?true:false);
+        ri->setDrawArrowAlways((scale>0)?node->getBoolValue("arrow_always"):false);
+        ri->setStippleOutline(node->getIntValue("outer_stipple",0xFFFF));
+        ri->setStippleCenterline(node->getIntValue("center_stipple",0xFFFF));
+        ri->setArrowRotationRadius(node->getDoubleValue("arrow_radius"));
+        ri->setArrowScale(scale);
+        ri->setLineScale(node->getDoubleValue("line_scale",1.0));
+        ri->setScaleDist(node->getDoubleValue("scale_dist_nm"));
+        SG_LOG(SG_INPUT, SG_INFO, "Done reading instrument " << name);
+        return (instr_item *) ri;
 }
 
-//
-// The following code deals with painting the "instrument" on the display
-//
-   /* textString - Bitmap font string */
-
-void textString( int x, int y, char *msg, void *font ){
-
-    if(*msg)
-    {
-//      puDrawString (  NULL, msg, x, y );
-        
-        glRasterPos2f(x, y);
-        while (*msg) {
-            glutBitmapCharacter(font, *msg);
-            msg++;
+
+int readInstrument(const SGPropertyNode * node)
+{
+    static const SGPropertyNode *startup_units_node
+        = fgGetNode("/sim/startup/units");
+
+    instr_item *HIptr;
+
+    if ( !strcmp(startup_units_node->getStringValue(), "feet") ) {
+        strcpy(units, " ft");
+    } else {
+        strcpy(units, " m");
+    }
+
+    const SGPropertyNode * ladder_group = node->getNode("ladders");
+
+    if (ladder_group != 0) {
+        int nLadders = ladder_group->nChildren();
+        for (int j = 0; j < nLadders; j++) {
+            HIptr = static_cast<instr_item *>(new HudLadder(ladder_group->getChild(j)));
+            HUD_deque.insert(HUD_deque.begin(), HIptr);
         }
     }
-}
 
+    const SGPropertyNode * card_group = node->getNode("cards");
+    if (card_group != 0) {
+        int nCards = card_group->nChildren();
+        for (int j = 0; j < nCards; j++) {
+            HIptr = readCard(card_group->getChild(j));
+            HUD_deque.insert(HUD_deque.begin(), HIptr);
+        }
+    }
 
-/* strokeString - Stroke font string */
-void strokeString(int x, int y, char *msg, void *font, float theta)
-{
-    int xx;
-    int yy;
-    int c;
-    float sintheta,costheta;
-    
-
-    if(*msg)
-    {
-    glPushMatrix();
-    glRotatef(theta * RAD_TO_DEG, 0.0, 0.0, 1.0);
-    sintheta = sin(theta);
-    costheta = cos(theta);
-    xx = (int)(x * costheta + y * sintheta);
-    yy = (int)(y * costheta - x * sintheta);
-    glTranslatef( xx, yy, 0);
-    glScalef(.1, .1, 0.0);
-    while( (c=*msg++) ) {
-        glutStrokeCharacter(font, c);
+    const SGPropertyNode * label_group = node->getNode("labels");
+    if (label_group != 0) {
+        int nLabels = label_group->nChildren();
+        for (int j = 0; j < nLabels; j++) {
+            HIptr = static_cast<instr_item *>(new instr_label(label_group->getChild(j)));
+            HUD_deque.insert(HUD_deque.begin(), HIptr);
+        }
     }
-    glPopMatrix();
+
+    const SGPropertyNode * tbi_group = node->getNode("tbis");
+    if (tbi_group != 0) {
+        int nTbis = tbi_group->nChildren();
+        for (int j = 0; j < nTbis; j++) {
+            HIptr = readTBI(tbi_group->getChild(j));
+            HUD_deque.insert( HUD_deque.begin(), HIptr);
+        }
     }
-}
 
-int getStringWidth ( char *str )
+    const SGPropertyNode * rwy_group = node->getNode("runways");
+    if (rwy_group != 0) {
+        int nRwy = rwy_group->nChildren();
+        for (int j = 0; j < nRwy; j++) {
+            SG_LOG(SG_COCKPIT, SG_DEBUG, "***  Reading runway properties ***");
+            HIptr = readRunway(rwy_group->getChild(j));
+            HUD_deque.insert( HUD_deque.begin(), HIptr);
+        }
+    }
+    return 0;
+}//end readinstrument
+
+
+int readHud( istream &input )
 {
-    if ( HUDtext && str )
-    {
-        float r, l ;
-        guiFntHandle->getBBox ( str, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
-        return FloatToInt( r - l );
+
+    SGPropertyNode root;
+
+    try {
+        readProperties(input, &root);
+    } catch (const sg_exception &e) {
+        guiErrorMessage("Error reading HUD: ", e);
+        return 0;
     }
-    return 0 ;
-}
 
-//========================= End of Class Implementations===================
-// fgHUDInit
-//
-// Constructs a HUD object and then adds in instruments. At the present
-// the instruments are hard coded into the routine. Ultimately these need
-// to be defined by the aircraft's instrumentation records so that the
-// display for a Piper Cub doesn't show the speed range of a North American
-// mustange and the engine readouts of a B36!
-//
 
-#define INSTRDEFS 21
+    SG_LOG(SG_INPUT, SG_INFO, "Read properties for  " <<
+           root.getStringValue("name"));
+
+
+    HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());
+
+
+    SG_LOG(SG_INPUT, SG_INFO, "Reading Hud instruments");
+
+    const SGPropertyNode * instrument_group = root.getChild("instruments");
+    int nInstruments = instrument_group->nChildren();
+
+    for (int i = 0; i < nInstruments; i++) {
+
+        const SGPropertyNode * node = instrument_group->getChild(i);
+
+        SGPath path( globals->get_fg_root() );
+        path.append(node->getStringValue("path"));
+
+        SG_LOG(SG_INPUT, SG_INFO, "Reading Instrument "
+               << node->getName()
+               << " from "
+               << path.str());
+
+        SGPropertyNode root2;
+        try {
+            readProperties(path.str(), &root2);
+        } catch (const sg_exception &e) {
+            guiErrorMessage("Error reading HUD instrument: ", e);
+            continue;
+        }
+        readInstrument(&root2);
+    }//for loop(i)
+
+    return 0;
+}
+
 
 int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ )
 {
-  instr_item *HIptr;
-//  int index;
-  int font_size;
-
-  int off = 50;
-  int min_x = 25; //off/2;
-  int max_x = 615; //640-(off/2);
-//  int min_y = off;
-  int max_y = 430; //480-off;
-  int cen_x = 320;
-  int cen_y = 240;
-  unsigned int text_h = 10;
-  unsigned int ladr_w2 = 60;
-  int ladr_h2 = 90;
-  int ladr_t = 35;
-  int compass_w = 200;
-  int gap = 10;
-
-  font_size = (current_options.get_xsize() > 1000) ? LARGE : SMALL;
-  
-  HUD_style = 1;
-
-  FG_LOG( FG_COCKPIT, FG_INFO, "Initializing current aircraft HUD" );
-
-//  deque < instr_item * > :: iterator first = HUD_deque.begin();
-//  deque < instr_item * > :: iterator last = HUD_deque.end();
-//  HUD_deque.erase( first, last);  // empty the HUD deque  
-
-  HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());  // empty the HUD deque
-
-//  hud->code = 1;
-//  hud->status = 0;
-
-  // For now lets just hardcode the hud here.
-  // In the future, hud information has to come from the same place
-  // aircraft information came from.
-
-//  fgHUDSetTimeMode( hud, NIGHT );
-//  fgHUDSetBrightness( hud, BRT_LIGHT );
-
-//      case 0:     // TBI
-  int x = 290; /*cen_x-30*/
-  int y = 45;  /*off-5*/
-//  HIptr = (instr_item *) new fgTBI_instr( x, y, ladr_w2, text_h );
-  HIptr = (instr_item *) new fgTBI_instr( 290, 45, 60, 10 );  
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 1:     // Artificial Horizon
-  HIptr = (instr_item *) new HudLadder( cen_x-ladr_w2, cen_y-ladr_h2,
-                                        2*ladr_w2, 2*ladr_h2 );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 4:    // GYRO COMPASS
-  HIptr = (instr_item *) new hud_card( cen_x-(compass_w/2),
-                                       max_y,
-                                       compass_w,
-                                       28,
-                                       get_heading,
-                                       HUDS_TOP,
-                                       360, 0,
-                                       1.0,
-                                       5,   1,
-                                       360,
-                                       0,
-                                       25,
-                                       true);
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 5:    // AMSL
-  HIptr = (instr_item *) new hud_card( max_x - 35 -15, // 15 to balance speed card
-                                       cen_y-(compass_w/2),
-                                       35,
-                                       compass_w,
-                                       get_altitude,
-//                                     HUDS_RIGHT | HUDS_VERT,
-                                       HUDS_LEFT | HUDS_VERT,
-                                       5000, -1000,
-                                       1.0,
-                                       100,  25,
-                                       0,
-                                       0,
-                                       250,
-                                       true);
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 6:
-  HIptr = (instr_item *) new  guage_instr( cen_x-50,            // x
-                                           cen_y + ladr_h2 -20,  // y
-                                           100,            // width
-                                           20,            // height
-                                           get_aileronval, // data source
-                                           HUDS_BOTTOM | HUDS_NOTEXT,
-                                           100.0,
-                                           +1.0,
-                                           -1.0);
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 3:    // Radio Altimeter
-  HIptr = (instr_item *) new hud_card( cen_x + ladr_w2 + gap + 13 + ladr_t,
-                                       cen_y-75,
-                                       25,
-                                       150,
-                                       get_agl,
-                                       HUDS_LEFT | HUDS_VERT,
-                                       1000, 0,
-                                       1.0,
-                                       25, 5,
-                                       0,
-                                       0,
-                                       200.0,
-                                       true);
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 7:
-  HIptr = (instr_item *) new  guage_instr( cen_x -ladr_w2 -gap -13 -20 -ladr_t,
-                                           cen_y-50,             // y
-                                           20,             // width
-                                           100,             // height
-                                           get_elevatorval, // data source
-                                           HUDS_RIGHT | HUDS_VERT | HUDS_NOTEXT,
-                                           -100.0,           // Scale data
-                                           +1.0,           // Data Range
-                                           -1.0);
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 8:
-  HIptr = (instr_item *) new  guage_instr( cen_x-50,             // x
-                                           cen_y -gap -ladr_w2 -20, //-85   // y
-                                           100,             // width
-                                           20,             // height
-                                           get_rudderval,   // data source
-                                           HUDS_TOP | HUDS_NOTEXT,
-                                           100.0,
-                                           +1.0,
-                                           -1.0);
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 2:    // KIAS
-  HIptr = (instr_item *) new hud_card( min_x +10 +5, //min_x +18,
-                                       cen_y-(compass_w/2),
-                                       28,
-                                       compass_w,
-                                       get_speed,
-//                                     HUDS_LEFT | HUDS_VERT,
-                                       HUDS_RIGHT | HUDS_VERT,                                     
-                                       200.0, 0.0,
-                                       1.0,
-                                       10,  5,
-                                       0,
-                                       0,
-                                       50.0,
-                                       true);
-
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 9:
-  HIptr = (instr_item *) new  guage_instr( min_x-10,           // x
-                                           cen_y -75,       // y 
-                                           20,              // width
-                                           150,             // height
-                                           get_throttleval, // data source
-//                                         HUDS_VERT | HUDS_RIGHT | HUDS_NOTEXT,
-                                           HUDS_VERT | HUDS_LEFT | HUDS_NOTEXT,                                        100.0,
-                                           1.0,
-                                           0.0
-                                          );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-// Remove this when below uncommented       
-//      case 10:
-  HIptr = (instr_item *) new instr_label( 10,
-                                          25,
-                                          60,
-                                          10,
-                                          get_frame_rate,
-                                          "%5.1f",
-                                          "",
-                                          NULL,
-                                          1.0,
-                                          HUDS_TOP,
-                                          RIGHT_JUST,
-                                          font_size,
-                                          0,
-                                          TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-  
-  HIptr = (instr_item *) new lat_label(  (cen_x - (compass_w/2))/2,
-                                          max_y,    
-                                          1,
-                                          text_h,
-                                          get_latitude,
-                                          "%s%", //"%.0f",
-                                          "", //"Lat ",
-                                          "",
-                                          1.0,
-                                          HUDS_TOP,
-                                          CENTER_JUST,
-                                          font_size,
-                                          0,
-                                          TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-    
-    HIptr = (instr_item *) new lon_label(((cen_x+compass_w/2)+(2*cen_x))/2,
-                                          max_y,
-                                          1, text_h,
-                                          get_longitude,
-                                          "%s%",//"%.0f",
-                                          "", //"Lon ", 
-                                          "",
-                                          1.0,
-                                          HUDS_TOP,
-                                          CENTER_JUST,
-                                          font_size,
-                                          0,
-                                          TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-    
-/*
-//      case 10:    // Digital KIAS
-        HIptr = (instr_item *) new instr_label ( 110,
-                                                 150,
-                                                  40,
-                                                  30,
-                                                 get_speed,
-                                                 "%5.0f",
-                                                 NULL,
-                                                 " Kts",
-                                                 1.0,
-                                                 HUDS_TOP,
-                                                 RIGHT_JUST,
-                                                 font_size,
-                                                 0,
-                                                 TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 11:    // Digital Rate of Climb
-        HIptr = (instr_item *) new instr_label ( 110,
-                                                 135,
-                                                  40,
-                                                  10,
-                                                 get_climb_rate,
-                                                 "%5.0f",
-                                                 " Climb",
-                                                 NULL,
-                                                 1.0,
-                                                 HUDS_TOP,
-                                                 RIGHT_JUST,
-                                                 font_size,
-                                                 0,
-                                                 TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 12:    // Roll indication diagnostic
-        HIptr = (instr_item *) new instr_label ( 110,
-                                                 120,
-                                                  40,
-                                                  10,
-                                                 get_roll,
-                                                 "%5.2f",
-                                                 " Roll",
-                                                 " Deg",
-                                                 1.0,
-                                                 HUDS_TOP,
-                                                 RIGHT_JUST,
-                                                 font_size,
-                                                 0,
-                                                 TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 13:    // Angle of attack diagnostic
-        HIptr = (instr_item *) new instr_label ( 440,
-                                                 150,
-                                                  60,
-                                                  10,
-                                                 get_aoa,
-                                                 "      %5.2f",
-                                                 "AOA",
-                                                 " Deg",
-                                                 1.0,
-                                                 HUDS_TOP,
-                                                 RIGHT_JUST,
-                                                 font_size,
-                                                 0,
-                                                 TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 14:
-        HIptr = (instr_item *) new instr_label ( 440,
-                                                 135,
-                                                  60,
-                                                  10,
-                                                 get_heading,
-                                                 " %5.1f",
-                                                 "Heading ",
-                                                 " Deg",
-                                                 1.0,
-                                                 HUDS_TOP,
-                                                 RIGHT_JUST,
-                                                 font_size,
-                                                 0,
-                                                 TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 15:
-        HIptr = (instr_item *) new instr_label ( 440,
-                                                 120,
-                                                  60,
-                                                  10,
-                                                 get_sideslip,
-                                                 "%5.2f",
-                                                 "Sideslip ",
-                                                 NULL,
-                                                 1.0,
-                                                 HUDS_TOP,
-                                                 RIGHT_JUST,
-                                                 font_size,
-                                                 0,
-                                                 TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 16:
-        HIptr = (instr_item *) new instr_label( 440,
-                                                100,
-                                                 60,
-                                                 10,
-                                                get_throttleval,
-                                                "%5.2f",
-                                                "Throttle ",
-                                                NULL,
-                                                 1.0,
-                                                HUDS_TOP,
-                                                RIGHT_JUST,
-                                                font_size,
-                                                0,
-                                                TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 17:
-        HIptr = (instr_item *) new instr_label( 440,
-                                                 85,
-                                                 60,
-                                                 10,
-                                                get_elevatorval,
-                                                "%5.2f",
-                                                "Elevator ",
-                                                NULL,
-                                                 1.0,
-                                                HUDS_TOP,
-                                                RIGHT_JUST,
-                                                font_size,
-                                                0,
-                                                TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 18:
-        HIptr = (instr_item *) new instr_label( 440,
-                                                 60,
-                                                 60,
-                                                 10,
-                                                get_aileronval,
-                                                "%5.2f",
-                                                "Aileron  ",
-                                                NULL,
-                                                 1.0,
-                                                HUDS_TOP,
-                                                RIGHT_JUST,
-                                                font_size,
-                                                0,
-                                                TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 19:
-        HIptr = (instr_item *) new instr_label( 10,
-                                                10,
-                                                60,
-                                                10,
-                                                 get_frame_rate,
-                                                "%.1f",
-                                                "Frame rate = ",
-                                                NULL,
-                                                 1.0,
-                                                HUDS_TOP,
-                                                RIGHT_JUST,
-                                                font_size,
-                                                0,
-                                                TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-
-//      case 20:
-      switch( current_options.get_tris_or_culled() ) {
-      case 0:
-          HIptr = (instr_item *) new instr_label( 10,
-                              25,
-                              120,
-                              10,
-                              get_vfc_tris_drawn,
-                              "%.0f",
-                              "Tris Rendered = ",
-                              NULL,
-                              1.0,
-                              HUDS_TOP,
-                              RIGHT_JUST,
-                              font_size,
-                              0,
-                              TRUE );
-          break;
-      case 1:
-          HIptr = (instr_item *) new instr_label( 10,
-                              25,
-                              90,
-                              10,
-                              get_vfc_ratio,
-                              "%.2f",
-                              "VFC Ratio = ",
-                              NULL,
-                              1.0,
-                              HUDS_TOP,
-                              RIGHT_JUST,
-                              font_size,
-                              0,
-                              TRUE );
-          break;
-      }
-      break;
-
-//      case 21:
-        HIptr = (instr_item *) new instr_label( 10,
-                                                40,
-                                                90,
-                                                10,
-                                                get_fov,
-                                                "%.1f",
-                                                "FOV = ",
-                                                NULL,
-                        1.0,
-                                                HUDS_TOP,
-                                                RIGHT_JUST,
-                                                font_size,
-                                                0,
-                                                TRUE );
-  HUD_deque.insert( HUD_deque.begin(), HIptr);
-*/
-//      default:
-//        HIptr = 0;;
-//      }
-//    if( HIptr ) {                   // Anything to install?
-//      HUD_deque.insert( HUD_deque.begin(), HIptr);
-//      }
-//    index++;
-//    }
-//  while( HIptr );
-
-  return 0;  // For now. Later we may use this for an error code.
+
+    HUD_style = 1;
+
+    SG_LOG( SG_COCKPIT, SG_INFO, "Initializing current aircraft HUD" );
+
+    string hud_path =
+        fgGetString("/sim/hud/path", "Huds/Default/default.xml");
+    SGPath path(globals->get_fg_root());
+    path.append(hud_path);
+
+    ifstream input(path.c_str());
+    if (!input.good()) {
+        SG_LOG(SG_INPUT, SG_ALERT,
+               "Cannot read Hud configuration from " << path.str());
+    } else {
+        readHud(input);
+        input.close();
+    }
+
+    fgHUDReshape();
+
+    if ( HUDtext ) {
+        // this chunk of code is not necessarily thread safe if the
+        // compiler optimizer reorders these statements.  Note that
+        // "delete ptr" does not set "ptr = NULL".  We have to do that
+        // ourselves.
+        fntRenderer *tmp = HUDtext;
+        HUDtext = NULL;
+        delete tmp;
+    }
+
+    FGFontCache *fc = globals->get_fontcache();
+    HUD_Font = fc->getTexFont(fgGetString("/sim/hud/font/name", "Helvetica.txf"));
+    if (!HUD_Font)
+        throw sg_throwable(string("/sim/hud/font/name is not a texture font"));
+
+    HUD_TextSize = fgGetFloat("/sim/hud/font/size", 10);
+
+    HUDtext = new fntRenderer();
+    HUDtext->setFont(HUD_Font);
+    HUDtext->setPointSize(HUD_TextSize);
+    HUD_TextList.setFont( HUDtext );
+
+    if (!HUD)
+        HUD = new HUD_Properties;
+    return 0;  // For now. Later we may use this for an error code.
 
 }
 
 int fgHUDInit2( fgAIRCRAFT * /* current_aircraft */ )
 {
-//    instr_item *HIptr;
-//    int index;
-    int font_size;
-
-    int off = 50;
-//  int min_x = off;
-//  int max_x = 640-off;
-//  int min_y = off;
-    int max_y = 480-off;
-    int cen_x = 640 / 2;
-//  int cen_y = 480 / 2;
-    int text_h = 10;
-    int ladr_w2 = 60;
-//  int ladr_h2 = 90;
-//  int ladr_t = 35;
-    int compass_w = 200;
-//  int gap = 10;
-
-    font_size = (current_options.get_xsize() > 1000) ? LARGE : SMALL;
 
     HUD_style = 2;
 
-    FG_LOG( FG_COCKPIT, FG_INFO, "Initializing current aircraft HUD" );
+    SG_LOG( SG_COCKPIT, SG_INFO, "Initializing current aircraft HUD" );
 
-//  deque < instr_item * > :: iterator first = HUD_deque.begin();
-//  deque < instr_item * > :: iterator last = HUD_deque.end();
-//  HUD_deque.erase( first, last);  // empty the HUD deque  
-    HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());
+    SGPath path(globals->get_fg_root());
+    path.append("Huds/Minimal/default.xml");
 
-    //  hud->code = 1;
-    //  hud->status = 0;
-
-    // For now lets just hardcode the hud here.
-    // In the future, hud information has to come from the same place
-    // aircraft information came from.
-
-    //  fgHUDSetTimeMode( hud, NIGHT );
-    //  fgHUDSetBrightness( hud, BRT_LIGHT );
-
-    //  index = 0;
-//    index = 19;  
-
-    instr_item* p;
-
-//      case 4:    // GYRO COMPASS
-    p =new hud_card( cen_x-(compass_w/2),
-                     max_y,
-                     compass_w,
-                     28,
-                     get_view_direction,
-                     HUDS_TOP,
-                     360, 0,
-                     1.0,
-                     5,   1,
-                     360,
-                     0,
-                     25,
-                     true);
-    HUD_deque.push_front( p );
-
-    p = new lat_label( (cen_x - compass_w/2)/2,
-                       max_y,
-                       0, text_h,
-                       get_latitude,
-                       "%s%", //"%.0f",
-                       "", //"Lat ",
-                       "",
-                       1.0,
-                       HUDS_TOP,
-                       CENTER_JUST,
-                       font_size,
-                       0,
-                       TRUE );
-    HUD_deque.push_front( p );
-    
-//    p = new instr_label( 140, 450, 60, 10,
-//           get_lat_min,
-//           "%05.2f",
-//           "",
-//           NULL,
-//           1.0,
-//           HUDS_TOP,
-//           CENTER_JUST,
-//           font_size,
-//           0,
-//           TRUE );
-//    HUD_deque.push_front( p );
-    
-    p = new lon_label(((cen_x+compass_w/2)+(2*cen_x))/2,
-                       max_y,
-                       1, text_h,
-                       get_longitude,
-                       "%s%",//"%.0f",
-                       "", //"Lon ",
-                       "",
-                       1.0,
-                       HUDS_TOP,
-                       CENTER_JUST,
-                       font_size,
-                       0,
-                       TRUE );
-    HUD_deque.push_front( p );
-    
-    int x_pos = 40;
-    
-    p = new instr_label( x_pos, 25, 60, 10,
-                         get_frame_rate,
-                         "%7.1f",
-                         "Frame rate =",
-                         NULL,
-                         1.0,
-                         HUDS_TOP,
-                         LEFT_JUST,
-                         font_size,
-                         0, 
-                         TRUE );
-    HUD_deque.push_front( p );
-
-    p = new instr_label( x_pos, 40, 120, 10,
-                         get_vfc_tris_culled,
-                         "%7.0f",
-                         "Culled       =",
-                         NULL,
-                         1.0,
-                         HUDS_TOP,
-                         LEFT_JUST,
-                         font_size,
-                         0,
-                         TRUE );
-    HUD_deque.push_front( p );
-
-    p = new instr_label( x_pos, 55, 120, 10,
-                         get_vfc_tris_drawn,
-                         "%7.0f",
-                         "Rendered   =",
-                         NULL,
-                         1.0,
-                         HUDS_TOP,
-                         LEFT_JUST,
-                         font_size,
-                         0,
-                         TRUE );
-    HUD_deque.push_front( p );
-    
-    p = new instr_label( x_pos, 70, 90, 10,
-                         get_fov,
-                         "%7.1f",
-                         "FOV          = ",
-                         NULL,
-                         1.0,
-                         HUDS_TOP,
-                         LEFT_JUST,
-                         font_size,
-                         0,
-                         TRUE );
-    HUD_deque.push_front( p );
-
-    x_pos = 480;
-    
-    p = new instr_label ( x_pos,
-                          70,
-                          60,
-                          10,
-                          get_aoa,
-                          "%7.2f",
-                          "AOA      ",
-                          " Deg",
-                          1.0,
-                          HUDS_TOP,
-                          LEFT_JUST,
-                          font_size,
-                          0,
-                          TRUE );
-    HUD_deque.push_front( p );
-
-    p = new instr_label( x_pos, 55, 40, 30,
-                         get_speed,
-                         "%5.0f",
-                         "Airspeed ",
-                         " Kts",
-                         1.0,
-                         HUDS_TOP,
-                         LEFT_JUST,
-                         font_size,
-                         0,
-                         TRUE );
-    HUD_deque.push_front( p );
-
-    if ( current_options.get_units() == fgOPTIONS::FG_UNITS_FEET ) {
-    strcpy(units, " ft");
+
+    ifstream input(path.c_str());
+    if (!input.good()) {
+        SG_LOG(SG_INPUT, SG_ALERT,
+               "Cannot read Hud configuration from " << path.str());
     } else {
-    strcpy(units, " m");
+        readHud(input);
+        input.close();
     }
-    p = new instr_label( x_pos, 40, 40, 10,
-             get_altitude,
-             "%5.0f",
-             "Altitude ",
-             units,
-             1.0,
-             HUDS_TOP,
-             LEFT_JUST,
-             font_size,
-             0,
-             TRUE );
-    HUD_deque.push_front( p );
-
-    p = new instr_label( x_pos, 25, 40, 10,
-             get_agl,
-             "%5.0f",
-             "Elvation ",
-             units,
-             1.0,
-             HUDS_TOP,
-             LEFT_JUST,
-             font_size,
-             0,
-             TRUE );
-    HUD_deque.push_front( p );
-
-    p = new instr_label( x_pos, 10, 60, 10,
-             get_heading,
-             "%5.1f",
-             "Heading  ",
-             " Deg",
-             1.0,
-             HUDS_TOP,
-             LEFT_JUST,
-             font_size,
-             0,
-             TRUE );
-    HUD_deque.push_front( p );
-
-    p = new fgTBI_instr( 290, 55, 60, 10 ); // 270
-    HUD_deque.push_front( p );
-    
-    p = new  guage_instr( 270, //250,            // x
-                          390, //360, //400, //45, //420,            // y
-                          100,            // width
-                          20,            // height
-                          get_aileronval, // data source
-                          HUDS_BOTTOM | HUDS_NOTEXT,
-                          100.0,
-                          +1.0,
-                          -1.0);
-    HUD_deque.push_front( p );
-
-    p = new  guage_instr( 20,             // x
-                          240-50,             // y
-                          20,             // width
-                          100,             // height
-                          get_elevatorval, // data source
-                          HUDS_RIGHT | HUDS_VERT | HUDS_NOTEXT,
-                          -100.0,           // Scale data
-                          +1.0,           // Data Range
-                          -1.0);
-    HUD_deque.push_front( p );
-
-    p = new  guage_instr( 270, //250,             // x
-                          10+15,             // y
-                          100,             // width
-                          20,             // height
-                          get_rudderval,   // data source
-                          HUDS_TOP | HUDS_NOTEXT,
-                          100.0,
-                          +1.0,
-                          -1.0);
-    HUD_deque.push_front( p );
-
-    p = new  guage_instr( 600,             // x
-                          240-80,
-                          20,
-                          160,             // height
-                          get_throttleval, // data source
-                          HUDS_VERT | HUDS_LEFT | HUDS_NOTEXT,
-                          100.0,
-                          1.0,
-                          0.0);
-    HUD_deque.push_front( p );
-    
+
+    if (!HUD)
+        HUD = new HUD_Properties;
     return 0;  // For now. Later we may use this for an error code.
+
 }
+//$$$ End - added, Neetha, 28 Nov 2k
+
+
+void fgHUDReshape(void) {
+#if 0
+    if ( HUDtext ) {
+        // this chunk of code is not necessarily thread safe if the
+        // compiler optimizer reorders these statements.  Note that
+        // "delete ptr" does not set "ptr = NULL".  We have to do that
+        // ourselves.
+        fntRenderer *tmp = HUDtext;
+        HUDtext = NULL;
+        delete tmp;
+    }
 
-int global_day_night_switch = DAY;
+    HUD_TextSize = fgGetInt("/sim/startup/xsize") / 60;
+    HUD_TextSize = 10;
+    HUDtext = new fntRenderer();
+    HUDtext -> setFont      ( guiFntHandle ) ;
+    HUDtext -> setPointSize ( HUD_TextSize ) ;
+    HUD_TextList.setFont( HUDtext );
+#endif
+}
+
+
+// fgUpdateHUD
+//
+// Performs a once around the list of calls to instruments installed in
+// the HUD object with requests for redraw. Kinda. It will when this is
+// all C++.
+//
+void fgUpdateHUD( void ) {
+
+    static const SGPropertyNode *enable3d_node = fgGetNode("/sim/hud/enable3d");
+    if ( HUD_style == 1 && enable3d_node->getBoolValue() ) {
+        fgUpdateHUDVirtual();
+        return;
+    }
 
-void HUD_brightkey( bool incr_bright )
+    static const float normal_aspect = float(640) / float(480);
+    // note: aspect_ratio is Y/X
+    float current_aspect = 1.0f/globals->get_current_view()->get_aspect_ratio();
+    if ( current_aspect > normal_aspect ) {
+        float aspect_adjust = current_aspect / normal_aspect;
+        float adjust = 320.0f*aspect_adjust - 320.0f;
+        fgUpdateHUD( -adjust, 0.0f, 640.0f+adjust, 480.0f );
+    } else {
+        float aspect_adjust = normal_aspect / current_aspect;
+        float adjust = 240.0f*aspect_adjust - 240.0f;
+        fgUpdateHUD( 0.0f, -adjust, 640.0f, 480.0f+adjust );
+    }
+}
+
+void fgUpdateHUDVirtual()
 {
-instr_item *pHUDInstr = HUD_deque[0];
-int brightness        = pHUDInstr->get_brightness();
-
-  if( current_options.get_hud_status() ) {
-    if( incr_bright ) {
-      switch (brightness) {
-        case BRT_LIGHT:
-          current_options.set_hud_status(0);
-          break;
-
-        case BRT_MEDIUM:
-          brightness = BRT_LIGHT;
-          break;
-
-        case BRT_DARK:
-          brightness = BRT_MEDIUM;
-          break;
-
-        case BRT_BLACK:
-          brightness = BRT_DARK;
-          break;
-
-        default:
-          brightness = BRT_BLACK;
-        }
-      }
-    else {
-      switch (brightness) {
-        case BRT_LIGHT:
-          brightness = BRT_MEDIUM;
-          break;
-
-        case BRT_MEDIUM:
-          brightness = BRT_DARK;
-          break;
-
-        case BRT_DARK:
-          brightness = BRT_BLACK;
-          break;
-
-        case BRT_BLACK:
-        default:
-          current_options.set_hud_status(0);
-        }
-      }
+    FGViewer* view = globals->get_current_view();
+
+    // Standard fgfs projection, with essentially meaningless clip
+    // planes (we'll map the whole HUD plane to z=-1)
+    glMatrixMode(GL_PROJECTION);
+    glPushMatrix();
+    glLoadIdentity();
+    gluPerspective(view->get_v_fov(), 1/view->get_aspect_ratio(), 0.1, 10);
+
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
+
+    // Standard fgfs view direction computation
+    float lookat[3];
+    lookat[0] = -sin(SG_DEGREES_TO_RADIANS * view->getHeadingOffset_deg());
+    lookat[1] = tan(SG_DEGREES_TO_RADIANS * view->getPitchOffset_deg());
+    lookat[2] = -cos(SG_DEGREES_TO_RADIANS * view->getHeadingOffset_deg());
+    if (fabs(lookat[1]) > 9999)
+        lookat[1] = 9999; // FPU sanity
+    gluLookAt(0, 0, 0, lookat[0], lookat[1], lookat[2], 0, 1, 0);
+
+    // Map the -1:1 square to a 55.0x41.25 degree wide patch at z=1.
+    // This is the default fgfs field of view, which the HUD files are
+    // written to assume.
+    float dx = 0.52056705; // tan(55/2)
+    float dy = dx * 0.75;  // assumes 4:3 aspect ratio
+    float m[16];
+    m[0] = dx; m[4] =  0; m[ 8] = 0; m[12] = 0;
+    m[1] =  0; m[5] = dy; m[ 9] = 0; m[13] = 0;
+    m[2] =  0; m[6] =  0; m[10] = 1; m[14] = 0;
+    m[3] =  0; m[7] =  0; m[11] = 0; m[15] = 1;
+    glMultMatrixf(m);
+
+    // Convert the 640x480 "HUD standard" coordinate space to a square
+    // about the origin in the range [-1:1] at depth of -1
+    glScalef(1./320, 1./240, 1);
+    glTranslatef(-320, -240, -1);
+
+    // Do the deed
+    drawHUD();
+
+    // Clean up our mess
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+}
+
+void fgUpdateHUD( GLfloat x_start, GLfloat y_start,
+                  GLfloat x_end, GLfloat y_end )
+{
+    glMatrixMode(GL_PROJECTION);
+    glPushMatrix();
+    glLoadIdentity();
+    gluOrtho2D(x_start, x_end, y_start, y_end);
+
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
+
+    drawHUD();
+
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+}
+
+void drawHUD()
+{
+    if ( !HUD_deque.size() ) // Trust everyone, but ALWAYS cut the cards!
+        return;
+
+    HUD_TextList.erase();
+    HUD_LineList.erase();
+    // HUD_StippleLineList.erase();
+
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_LIGHTING);
+
+    static const SGPropertyNode *heading_enabled
+        = fgGetNode("/autopilot/locks/heading", true);
+    static const SGPropertyNode *altitude_enabled
+        = fgGetNode("/autopilot/locks/altitude", true);
+
+    static char hud_hdg_text[256];
+    static char hud_wp0_text[256];
+    static char hud_wp1_text[256];
+    static char hud_wp2_text[256];
+    static char hud_alt_text[256];
+
+    glEnable(GL_BLEND);
+    if (HUD->isTransparent())
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+    else
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    if (HUD->isAntialiased()) {
+        glEnable(GL_LINE_SMOOTH);
+        glAlphaFunc(GL_GREATER, HUD->alphaClamp());
+        glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
+        //glLineWidth(1.5);
+    } else {
+        //glLineWidth(1.0);
     }
-  else {
-    current_options.set_hud_status(1);
-    if( incr_bright ) {
-      if( DAY == global_day_night_switch ) {
-        brightness = BRT_BLACK;
-        }
-      else {
-        brightness = BRT_DARK;
-        global_day_night_switch = DAY;
+
+    HUD->setColor();
+    for_each(HUD_deque.begin(), HUD_deque.end(), HUDdraw());
+
+    //HUD_TextList.add( fgText(40, 10, get_formated_gmt_time(), 0) );
+
+
+    int apY = 480 - 80;
+
+
+    if (strcmp( heading_enabled->getStringValue(), "dg-heading-hold") == 0 ) {
+        snprintf( hud_hdg_text, 256, "hdg = %.1f\n",
+                  fgGetDouble("/autopilot/settings/heading-bug-deg") );
+        HUD_TextList.add( fgText( 40, apY, hud_hdg_text ) );
+        apY -= 15;
+    } else if ( strcmp(heading_enabled->getStringValue(), "true-heading-hold") == 0 ) {
+        snprintf( hud_hdg_text, 256, "hdg = %.1f\n",
+                  fgGetDouble("/autopilot/settings/true-heading-deg") );
+        HUD_TextList.add( fgText( 40, apY, hud_hdg_text ) );
+        apY -= 15;
+
+        string wp0_id = fgGetString( "/autopilot/route-manager/wp[0]/id" );
+        if ( wp0_id.length() > 0 ) {
+            snprintf( hud_wp0_text, 256, "%5s %6.1fnm %s", wp0_id.c_str(),
+                      fgGetDouble( "/autopilot/route-manager/wp[0]/dist" ),
+                      fgGetString( "/autopilot/route-manager/wp[0]/eta" ) );
+            HUD_TextList.add( fgText( 40, apY, hud_wp0_text ) );
+            apY -= 15;
         }
-      }
-    else {
-      if( NIGHT == global_day_night_switch ) {
-        brightness = BRT_DARK;
+        string wp1_id = fgGetString( "/autopilot/route-manager/wp[1]/id" );
+        if ( wp1_id.length() > 0 ) {
+            snprintf( hud_wp1_text, 256, "%5s %6.1fnm %s", wp1_id.c_str(),
+                      fgGetDouble( "/autopilot/route-manager/wp[1]/dist" ),
+                      fgGetString( "/autopilot/route-manager/wp[1]/eta" ) );
+            HUD_TextList.add( fgText( 40, apY, hud_wp1_text ) );
+            apY -= 15;
         }
-      else {
-        brightness = BRT_MEDIUM;
-        global_day_night_switch = NIGHT;
+        string wp2_id = fgGetString( "/autopilot/route-manager/wp-last/id" );
+        if ( wp2_id.length() > 0 ) {
+            snprintf( hud_wp2_text, 256, "%5s %6.1fnm %s", wp2_id.c_str(),
+                      fgGetDouble( "/autopilot/route-manager/wp-last/dist" ),
+                      fgGetString( "/autopilot/route-manager/wp-last/eta" ) );
+            HUD_TextList.add( fgText( 40, apY, hud_wp2_text ) );
+            apY -= 15;
         }
-      }
     }
-  pHUDInstr->SetBrightness( brightness );
+
+    if ( strcmp( altitude_enabled->getStringValue(), "altitude-hold" ) == 0 ) {
+        snprintf( hud_alt_text, 256, "alt = %.0f\n",
+                  fgGetDouble("/autopilot/settings/target-altitude-ft") );
+        HUD_TextList.add( fgText( 40, apY, hud_alt_text ) );
+        apY -= 15;
+    } else if ( strcmp( altitude_enabled->getStringValue(), "agl-hold" ) == 0 ){
+        snprintf( hud_alt_text, 256, "agl = %.0f\n",
+                  fgGetDouble("/autopilot/settings/target-agl-ft") );
+        HUD_TextList.add( fgText( 40, apY, hud_alt_text ) );
+        apY -= 15;
+    }
+
+    HUD_TextList.draw();
+    HUD_LineList.draw();
+
+    // glEnable(GL_LINE_STIPPLE);
+    // glLineStipple( 1, 0x00FF );
+    // HUD_StippleLineList.draw();
+    // glDisable(GL_LINE_STIPPLE);
+
+    if (HUD->isAntialiased()) {
+        glDisable(GL_ALPHA_TEST);
+        glDisable(GL_LINE_SMOOTH);
+        //glLineWidth(1.0);
+    }
+
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_LIGHTING);
 }
 
-// fgUpdateHUD
-//
-// Performs a once around the list of calls to instruments installed in
-// the HUD object with requests for redraw. Kinda. It will when this is
-// all C++.
+
+
+void fgTextList::draw()
+{
+    if (!Font)
+        return;
+
+    vector<fgText>::iterator curString = List.begin();
+    vector<fgText>::iterator lastString = List.end();
+
+    glPushAttrib(GL_COLOR_BUFFER_BIT);
+    glEnable(GL_BLEND);
+    if (HUD->isTransparent())
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+    else
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    if (HUD->isAntialiased()) {
+        glEnable(GL_ALPHA_TEST);
+        glAlphaFunc(GL_GREATER, HUD->alphaClamp());
+    }
+
+    Font->begin();
+    for (; curString != lastString; curString++)
+        curString->Draw(Font,curString->digit);
+    Font->end();
+
+    glDisable(GL_TEXTURE_2D);
+    glPopAttrib();
+}
+
+
+
+// HUD property listener class
 //
-void fgUpdateHUD( void ) {
-  int brightness;
-//  int day_night_sw = current_aircraft.controls->day_night_switch;
-  int day_night_sw = global_day_night_switch;
-  int hud_displays = HUD_deque.size();
-  instr_item *pHUDInstr;
-  float line_width;
-
-  if( !hud_displays ) {  // Trust everyone, but ALWAYS cut the cards!
-    return;
+HUD_Properties::HUD_Properties() :
+    _current(fgGetNode("/sim/hud/current-color", true)),
+    _visibility(fgGetNode("/sim/hud/visibility", true)),
+    _antialiasing(fgGetNode("/sim/hud/color/antialiased", true)),
+    _transparency(fgGetNode("/sim/hud/color/transparent", true)),
+    _red(fgGetNode("/sim/hud/color/red", true)),
+    _green(fgGetNode("/sim/hud/color/green", true)),
+    _blue(fgGetNode("/sim/hud/color/blue", true)),
+    _alpha(fgGetNode("/sim/hud/color/alpha", true)),
+    _alpha_clamp(fgGetNode("/sim/hud/color/alpha-clamp", true)),
+    _brightness(fgGetNode("/sim/hud/color/brightness", true)),
+    _visible(false),
+    _antialiased(false),
+    _transparent(false),
+    _a(0.67),
+    _cl(0.01)
+{
+    _visibility->addChangeListener(this);
+    _antialiasing->addChangeListener(this);
+    _transparency->addChangeListener(this);
+    _red->addChangeListener(this);
+    _green->addChangeListener(this);
+    _blue->addChangeListener(this);
+    _alpha->addChangeListener(this);
+    _alpha_clamp->addChangeListener(this);
+    _brightness->addChangeListener(this);
+    _current->addChangeListener(this, true);
+}
+
+
+void HUD_Properties::valueChanged(SGPropertyNode *node)
+{
+    if (!strcmp(node->getName(), "current-color")) {
+        int i = node->getIntValue();
+        if (i < 0)
+            i = 0;
+        SGPropertyNode *n = fgGetNode("/sim/hud/palette", true);
+        if ((n = n->getChild("color", i, false))) {
+            if (n->hasValue("red"))
+                _red->setFloatValue(n->getFloatValue("red", 1.0));
+            if (n->hasValue("green"))
+                _green->setFloatValue(n->getFloatValue("green", 1.0));
+            if (n->hasValue("blue"))
+                _blue->setFloatValue(n->getFloatValue("blue", 1.0));
+            if (n->hasValue("alpha"))
+                _alpha->setFloatValue(n->getFloatValue("alpha", 0.67));
+            if (n->hasValue("alpha-clamp"))
+                _alpha_clamp->setFloatValue(n->getFloatValue("alpha-clamp", 0.01));
+            if (n->hasValue("brightness"))
+                _brightness->setFloatValue(n->getFloatValue("brightness", 0.75));
+            if (n->hasValue("antialiased"))
+                _antialiasing->setBoolValue(n->getBoolValue("antialiased", false));
+            if (n->hasValue("transparent"))
+                _transparency->setBoolValue(n->getBoolValue("transparent", false));
+        }
     }
+    _visible = _visibility->getBoolValue();
+    _transparent = _transparency->getBoolValue();
+    _antialiased = _antialiasing->getBoolValue();
+    float brt = _brightness->getFloatValue();
+    _r = clamp(brt * _red->getFloatValue());
+    _g = clamp(brt * _green->getFloatValue());
+    _b = clamp(brt * _blue->getFloatValue());
+    _a = clamp(_alpha->getFloatValue());
+    _cl = clamp(_alpha_clamp->getFloatValue());
+}
 
-  HUD_TextList.erase();
-  HUD_LineList.erase();
-//  HUD_StippleLineList.erase();
-  
-  pHUDInstr = HUD_deque[0];
-  brightness = pHUDInstr->get_brightness();
-//  brightness = HUD_deque.at(0)->get_brightness();
-
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-
-  glLoadIdentity();
-  gluOrtho2D(0, 640, 0, 480);
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-
-  glColor3f(1.0, 1.0, 1.0);
-  glIndexi(7);
-
-  glDisable(GL_DEPTH_TEST);
-  glDisable(GL_LIGHTING);
-
-  // We can do translucency, so why not. :-)
-//  glEnable    ( GL_BLEND ) ;
-//  glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
-  
-  if( day_night_sw == DAY) {
-      switch (brightness) {
-          case BRT_LIGHT:
-//            glColor4f (0.1, 0.9, 0.1, 0.75);
-            glColor3f (0.1, 0.9, 0.1);
-            break;
-
-          case BRT_MEDIUM:
-//            glColor4f (0.1, 0.7, 0.0, 0.75);
-            glColor3f (0.1, 0.7, 0.0);
-            break;
-
-          case BRT_DARK:
-//            glColor4f (0.0, 0.6, 0.0, 0.75);
-            glColor3f(0.0, 0.6, 0.0);
-            break;
-
-          case BRT_BLACK:
-//            glColor4f( 0.0, 0.0, 0.0, 0.75);
-            glColor3f( 0.0, 0.0, 0.0);
-            break;
-
-          default:;
-      }
-  }
-  else {
-      if( day_night_sw == NIGHT) {
-          switch (brightness) {
-              case BRT_LIGHT:
-//                glColor4f (0.9, 0.1, 0.1, 0.75);
-                glColor3f (0.9, 0.1, 0.1);
-                break;
-
-              case BRT_MEDIUM:
-//                glColor4f (0.7, 0.0, 0.1, 0.75);
-                glColor3f (0.7, 0.0, 0.1);
-                break;
-
-              case BRT_DARK:
-              default:
-//                glColor4f (0.6, 0.0, 0.0, 0.75);
-                  glColor3f (0.6, 0.0, 0.0);
-          }
-      }
-          else {     // Just in case default
-//            glColor4f (0.1, 0.9, 0.1, 0.75);
-              glColor3f (0.1, 0.9, 0.1);
-          }
-  }
-
-  deque < instr_item * > :: iterator current = HUD_deque.begin();
-  deque < instr_item * > :: iterator last = HUD_deque.end();
-
-  for ( ; current != last; ++current ) {
-      pHUDInstr = *current;
-
-      if( pHUDInstr->enabled()) {
-          //  fgPrintf( FG_COCKPIT, FG_DEBUG, "HUD Code %d  Status %d\n",
-          //            hud->code, hud->status );
-          pHUDInstr->draw();
-//        HUD_deque.at(i)->draw(); // Responsible for broken or fixed variants.
-                              // No broken displays honored just now.
-      }
-  }
-
-  char *gmt_str = get_formated_gmt_time();
-  HUD_TextList.add( fgText( 40, 10, gmt_str) );
-  
-#ifdef FG_NETWORK_OLK
-  if ( net_hud_display ) {
-      net_hud_update();
-  }
-#endif
 
-  HUD_TextList.draw();
-
-  line_width = (current_options.get_xsize() > 1000) ? 1.0 : 0.5;
-  glLineWidth(line_width);
-  HUD_LineList.draw();
-
-//  glEnable(GL_LINE_STIPPLE);
-//  glLineStipple( 1, 0x00FF );
-//  HUD_StippleLineList.draw();
-//  glDisable(GL_LINE_STIPPLE);
-
-//  glDisable( GL_BLEND );
-  
-  glEnable(GL_DEPTH_TEST);
-  glEnable(GL_LIGHTING);
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
+void HUD_Properties::setColor() const
+{
+    if (_antialiased)
+        glColor4f(_r, _g, _b, _a);
+    else
+        glColor3f(_r, _g, _b);
 }
+