X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FCockpit%2Fhud.cxx;h=a8b7f5dd6ffd58611ef08da794846310f0bf3b92;hb=ddda2c68d5000377c7f76193f27ef78645fe316e;hp=2ef0a162022beb99caf6092108e155d3bc67a9d9;hpb=17c96ae69ed7a3c33c816e821ae88c501ab7cf65;p=flightgear.git

diff --git a/src/Cockpit/hud.cxx b/src/Cockpit/hud.cxx
index 2ef0a1620..a8b7f5dd6 100644
--- a/src/Cockpit/hud.cxx
+++ b/src/Cockpit/hud.cxx
@@ -16,11 +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>
@@ -33,38 +37,32 @@
 #ifdef __BORLANDC__
 #  define exception c_exception
 #endif
+
 #include <math.h>
 
-#include <GL/glut.h>
 #include <stdlib.h>
-#include STL_STRING
-#include STL_FSTREAM
+#include <stdio.h>              // char related functions
+#include <string.h>             // strcmp()
+
+#include SG_GLU_H
 
 #include <simgear/constants.h>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/props.hxx>
-//#include <simgear/math/fg_random.h>
-//#include <simgear/math/polar3d.hxx>
+#include <simgear/props/props.hxx>
+#include <simgear/misc/sg_path.hxx>
 
 #include <Aircraft/aircraft.hxx>
-#include <Autopilot/newauto.hxx>
-#include <GUI/gui.h>
+#include <Autopilot/xmlauto.hxx>
+#include <GUI/new_gui.hxx>
 #include <Main/globals.hxx>
 #include <Main/fg_props.hxx>
-#ifdef FG_NETWORK_OLK
-#include <NetworkOLK/network.h>
-#endif
 #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
@@ -79,29 +77,22 @@ fgLineList         HUD_LineList;
 fgLineList         HUD_StippleLineList;
 
 fntRenderer *HUDtext = 0;
-float  HUD_TextSize = 0;
+fntTexFont *HUD_Font = 0;
+float HUD_TextSize = 0;
 int HUD_style = 0;
 
 float HUD_matrix[16];
-static float hud_trans_alpha = 0.67f;
-
 
-//$$$ begin - added, Neetha, 28 Nov 2k
 
-static string	name;
-static int		x;
-static int		y;
+static string  name;
+static int     x;
+static int     y;
 static UINT    width;
 static UINT    height;
-static float	factor;
 static float   span_units;
-static float   division_units;
-static float   minor_division = 0;
-static UINT    screen_hole;
-static UINT    lbl_pos;
 static bool    working;
 static string  loadfn;
-static UINT	options;
+static UINT    options;
 static float   maxValue;
 static float   minValue;
 static float   scaling;
@@ -112,144 +103,58 @@ static int     dp_showing = 0;
 static string  label_format;
 static string  prelabel;
 static string  postlabel;
-static int     justi;
-static int		blinking;
 static float   maxBankAngle;
 static float   maxSlipAngle;
 static UINT    gap_width;
-static bool	latitude;
-static bool	longitude;
-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 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 bool    frl_spot;
-static bool	target;
-static bool    vel_vector;
-static bool    drift;
-static bool    alpha;
-static bool	energy;
-static bool	climb_dive;
-static bool	glide;
-static float	glide_slope_val;
-static bool	worm_energy;
-static bool	waypoint;
-
-static FLTFNPTR load_fn;    
-static fgLabelJust justification;
-static const char *pre_label_string  = 0;
-static const char *post_label_string = 0;
+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 * readLadder ( const SGPropertyNode * node);
 static instr_item * readCard ( const SGPropertyNode * node);
-static instr_item * readLabel( const SGPropertyNode * node);
 static instr_item * readTBI( const SGPropertyNode * node);
-//$$$ end   - added, Neetha, 28 Nov 2k
 
-void fgHUDalphaInit( void );
+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
 
-#ifdef OLD_CODE
-void drawOneLine( UINT x1, UINT y1, UINT x2, UINT y2)
-{
-  glBegin(GL_LINES);
-  glVertex2f(x1, y1);
-  glVertex2f(x2, y2);
-  glEnd();
-}
-
-void drawOneLine( RECT &rect)
-{
-  glBegin(GL_LINES);
-  glVertex2f(rect.left, rect.top);
-  glVertex2f(rect.right, rect.bottom);
-  glEnd();
-}
-
-//
-// 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++;
-        }
-    }
-}
-
-
-/* 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 * SGD_RADIANS_TO_DEGREES, 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);
-    }
-    glPopMatrix();
-    }
-}
-
-int getStringWidth ( char *str )
-{
-    if ( HUDtext && str )
-    {
-        float r, l ;
-        guiFntHandle->getBBox ( str, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
-        return FloatToInt( r - l );
-    }
-    return 0 ;
-}
-#endif // OLD_CODE
-
 //========================= End of Class Implementations===================
 // fgHUDInit
 //
@@ -260,479 +165,354 @@ int getStringWidth ( char *str )
 // mustange and the engine readouts of a B36!
 //
 
-#define INSTRDEFS 21
-
-//$$$ begin - added, Neetha, 28 Nov 2k
-static instr_item * 
-readLadder(const SGPropertyNode * node)
-{
-
-	instr_item *p;
-
-				name			= node->getStringValue("name");
-				x				= node->getIntValue("x");
-				y				= node->getIntValue("y");
-				width			= node->getIntValue("width");
-				height			= node->getIntValue("height");
-				factor			= node->getFloatValue("compression_factor");
-				span_units		= node->getFloatValue("span_units");
-				division_units	= node->getFloatValue("division_units");
-				screen_hole		= node->getIntValue("screen_hole");
-				lbl_pos			= node->getIntValue("lbl_pos");
-				frl_spot		= node->getBoolValue("enable_frl",false);
-				target			= node->getBoolValue("enable_target_spot",false);
-				vel_vector		= node->getBoolValue("enable_velocity_vector",false);
-				drift			= node->getBoolValue("enable_drift_marker",false);
-				alpha			= node->getBoolValue("enable_alpha_bracket",false);
-				energy			= node->getBoolValue("enable_energy_marker",false);
-				climb_dive		= node->getBoolValue("enable_climb_dive_marker",false);
-				glide			= node->getBoolValue("enable_glide_slope_marker",false);
-				glide_slope_val	= node->getFloatValue("glide_slope",-4.0);
-				worm_energy		= node->getBoolValue("enable_energy_marker",false);
-				waypoint		= node->getBoolValue("enable_waypoint_marker",false);
-				working			= node->getBoolValue("working");
-
-				FG_LOG(FG_INPUT, FG_INFO, "Done reading instrument " << name);
-	
-				
-				p = (instr_item *) new HudLadder( name, x, y,
-                                        width, height, factor,
-										get_roll, get_pitch,
-										span_units, division_units, minor_division,
-										screen_hole, lbl_pos, frl_spot, target, vel_vector, 
-										drift, alpha, energy, climb_dive, 
-										glide, glide_slope_val, worm_energy, 
-										waypoint, working);
-				
-				return p;
-		
-} //end readLadder
-
-static instr_item * 
+static instr_item *
 readCard(const SGPropertyNode * node)
 {
 
-	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");
-				working			= node->getBoolValue("working");
-
-
-				FG_LOG(FG_INPUT, FG_INFO, "Done reading instrument " << name);
-
-
-				if(type=="guage")
-					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=="rudderval")
-					load_fn = get_rudderval;
-				else
-				if(loadfn=="throttleval")
-					load_fn = get_throttleval;
-
-
-				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,
-														working);
-					return p;
+    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 *
-readLabel(const SGPropertyNode * node)
-{
-	instr_item *p;
-
-	int font_size = (fgGetInt("/sim/startup/xsize") > 1000) ? LARGE : SMALL;
-
-				name				= node->getStringValue("name");
-				x                   = node->getIntValue("x");
-				y                   = node->getIntValue("y");
-				width               = node->getIntValue("width");
-				height				= node->getIntValue("height");
-				loadfn				= node->getStringValue("data_source");
-				label_format		= node->getStringValue("label_format");
-				prelabel			= node->getStringValue("pre_label_string");
-				postlabel			= node->getStringValue("post_label_string");
-				scaling				= node->getFloatValue("scale_data");
-				options				= node->getIntValue("options");
-				justi				= node->getIntValue("justification");
-				blinking            = node->getIntValue("blinking");
-				latitude			= node->getBoolValue("latitude",false);
-				longitude			= node->getBoolValue("longitude",false);
-				working             = node->getBoolValue("working");
-
-
-				FG_LOG(FG_INPUT, FG_INFO, "Done reading instrument " << name);
-
-
-				if(justi==0)
-					justification = LEFT_JUST;
-				else
-				if(justi==1)
-					justification = CENTER_JUST;
-				else
-				if(justi==2)
-					justification = RIGHT_JUST;
-
-
-				if(prelabel=="NULL")
-					pre_label_string = NULL;
-				else
-				if(prelabel=="blank")
-					pre_label_string = " ";
-				else
-					pre_label_string = prelabel.c_str();
-
-
-				if(postlabel=="blank")
-					post_label_string = " ";
-				else
-				if(postlabel=="NULL")
-					post_label_string = NULL;
-				else
-				if(postlabel=="units")
-					post_label_string = units;
-				else
-					post_label_string = postlabel.c_str();
- 
-
-				if(loadfn=="aux16")
-					load_fn = get_aux16;
-				else
-				if(loadfn=="aux17")
-					load_fn = get_aux17;
-				else
-				if(loadfn=="aux9")
-					load_fn = get_aux9;
-				else
-				if(loadfn=="aux11")
-					load_fn = get_aux11;
-				else
-				if(loadfn=="aux12")
-					load_fn = get_aux12;
-				else
-				if(loadfn=="aux10")
-					load_fn = get_aux10;
-				else
-				if(loadfn=="aux13")
-					load_fn = get_aux13;
-				else
-				if(loadfn=="aux14")
-					load_fn = get_aux14;
-				else
-				if(loadfn=="aux15")
-					load_fn = get_aux15;
-				else
-				if(loadfn=="aux8")
-					load_fn = get_aux8;
-				else
-				if(loadfn=="ax")
-					load_fn = get_Ax;
-				else
-				if(loadfn=="speed")
-					load_fn = get_speed;
-				else
-				if(loadfn=="mach")
-					load_fn = get_mach;
-				else
-				if(loadfn=="altitude")
-					load_fn = get_altitude;
-				else
-				if(loadfn=="agl")
-					load_fn = get_agl;
-				else
-				if(loadfn=="framerate")
-					load_fn = get_frame_rate;
-				else
-				if(loadfn=="heading")
-					load_fn = get_heading;
-				else
-				if(loadfn=="fov")
-					load_fn = get_fov;
-				else
-				if(loadfn=="vfc_tris_culled")
-					load_fn = get_vfc_tris_culled;
-				else
-				if(loadfn=="vfc_tris_drawn")
-					load_fn = get_vfc_tris_drawn;
-				else
-				if(loadfn=="aoa")
-					load_fn = get_aoa;
-				else
-				if(loadfn=="latitude")
-					load_fn  = get_latitude;
-				else
-				if(loadfn=="longitude")
-					load_fn   = get_longitude;
-
-
-				p = (instr_item *) new instr_label ( x,
-                                                 y,
-                                                 width,
-                                                 height,
-                                                 load_fn,
-											     label_format.c_str(),
-                                                 pre_label_string,
-												 post_label_string,
-                                                 scaling,
-                                                 options,
-                                                 justification,
-												 font_size,
-                                                 blinking,
-												 latitude,
-                                                 longitude,
-												 working);
-
-				return p;
-
-} // end readLabel
-
-static instr_item * 
 readTBI(const SGPropertyNode * node)
 {
 
-	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");
-
-				FG_LOG(FG_INPUT, FG_INFO, "Done reading instrument " << name);
-
-
-				p = (instr_item *) new fgTBI_instr(	x,
-														y,  
-														width,
-														height,
-														get_roll,
-														get_sideslip,
-														maxBankAngle, 
-														maxSlipAngle,
-														gap_width,
-														working);
-
-				return p;
+    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;
+}
+
 
 int readInstrument(const SGPropertyNode * node)
 {
+    static const SGPropertyNode *startup_units_node
+        = fgGetNode("/sim/startup/units");
+
+    instr_item *HIptr;
 
-	instr_item *HIptr;
-    
-    if ( fgGetString("/sim/startup/units") == "feet" ) {
-    strcpy(units, " ft");
+    if ( !strcmp(startup_units_node->getStringValue(), "feet") ) {
+        strcpy(units, " ft");
     } else {
-    strcpy(units, " m");
+        strcpy(units, " m");
     }
 
-			const SGPropertyNode * ladder_group = node->getNode("ladders");
+    const SGPropertyNode * ladder_group = node->getNode("ladders");
 
-			if (ladder_group != 0) {
-				int nLadders = ladder_group->nChildren();
-				for (int j = 0; j < nLadders; j++) {
+    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);
+        }
+    }
 
-					HIptr = readLadder(ladder_group->getChild(j));
-					HUD_deque.insert( HUD_deque.begin(), HIptr);
-					
-				}// for - ladders
-			}
+    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);
+        }
+    }
 
-			const SGPropertyNode * card_group = node->getNode("cards");
-			if (card_group != 0) {
-				int nCards = card_group->nChildren();
-				for (int j = 0; j < nCards; j++) {
+    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);
+        }
+    }
 
-					HIptr = readCard(card_group->getChild(j));
-					HUD_deque.insert( HUD_deque.begin(), HIptr);
+    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);
+        }
+    }
 
-				}//for - cards
-			}
+    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
 
-			const SGPropertyNode * label_group = node->getNode("labels");
-			if (label_group != 0) {
-				int nLabels = label_group->nChildren();
-				for (int j = 0; j < nLabels; j++) {
 
-					HIptr = readLabel(label_group->getChild(j));
-					HUD_deque.insert( HUD_deque.begin(), HIptr);
+int readHud( istream &input )
+{
 
-				}//for - labels
-			}
+    SGPropertyNode root;
 
-			const SGPropertyNode * tbi_group = node->getNode("tbis");
-			if (tbi_group != 0) {
-				int nTbis = tbi_group->nChildren();
-				for (int j = 0; j < nTbis; j++) {
+    try {
+        readProperties(input, &root);
+    } catch (const sg_exception &e) {
+        guiErrorMessage("Error reading HUD: ", e);
+        return 0;
+    }
 
-					HIptr = readTBI(tbi_group->getChild(j));
-					HUD_deque.insert( HUD_deque.begin(), HIptr);
 
-				}//for - tbis
-			}
- return 0;
-}//end readinstrument
+    SG_LOG(SG_INPUT, SG_INFO, "Read properties for  " <<
+           root.getStringValue("name"));
 
-int readHud( istream &input ) 
-{
 
-	SGPropertyNode root;
+    HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());
 
 
-	if (!readProperties(input, &root)) {
-		FG_LOG(FG_INPUT, FG_ALERT, "Malformed property list for hud.");
-		return 0;
-	}
-  
-	
-	FG_LOG(FG_INPUT, FG_INFO, "Read properties for  " <<
-		root.getStringValue("name"));
+    SG_LOG(SG_INPUT, SG_INFO, "Reading Hud instruments");
 
+    const SGPropertyNode * instrument_group = root.getChild("instruments");
+    int nInstruments = instrument_group->nChildren();
 
-	HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());  // empty the HUD deque
+    for (int i = 0; i < nInstruments; i++) {
 
+        const SGPropertyNode * node = instrument_group->getChild(i);
 
-	FG_LOG(FG_INPUT, FG_INFO, "Reading Hud instruments");
+        SGPath path( globals->get_fg_root() );
+        path.append(node->getStringValue("path"));
 
-	const SGPropertyNode * instrument_group = root.getChild("instruments");
-	int nInstruments = instrument_group->nChildren();
+        SG_LOG(SG_INPUT, SG_INFO, "Reading Instrument "
+               << node->getName()
+               << " from "
+               << path.str());
 
-	for (int i = 0; i < nInstruments; i++) {
-		
-		const SGPropertyNode * node = instrument_group->getChild(i);
+        SGPropertyNode root2;
+        try {
+            readProperties(path.str(), &root2);
+        } catch (const sg_exception &e) {
+            guiErrorMessage("Error reading HUD instrument: ", e);
+            continue;
+        }
+        readInstrument(&root2);
+    }//for loop(i)
 
-		FGPath path( globals->get_fg_root() );
-		path.append(node->getStringValue("path"));
+    return 0;
+}
 
-		FG_LOG(FG_INPUT, FG_INFO, "Reading Instrument "
-		<< node->getName()
-		<< " from "
-		<< path.str());
 
+int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ )
+{
 
-		SGPropertyNode root2;
-		if (readProperties(path.str(), &root2)) {
+    HUD_style = 1;
 
-			readInstrument(&root2);
+    SG_LOG( SG_COCKPIT, SG_INFO, "Initializing current aircraft HUD" );
 
-		}//if
-	}//for loop(i)
- return 0;
-}
+    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();
 
-int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ )
-{
+    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_style = 1;
+    HUD_TextSize = fgGetFloat("/sim/hud/font/size", 10);
 
-	FG_LOG( FG_COCKPIT, FG_INFO, "Initializing current aircraft HUD" );
+    HUDtext = new fntRenderer();
+    HUDtext->setFont(HUD_Font);
+    HUDtext->setPointSize(HUD_TextSize);
+    HUD_TextList.setFont( HUDtext );
 
-    string hud_path =
-	fgGetString("/sim/hud/path", "Huds/Default/default.xml");
-	FGPath path(globals->get_fg_root());
-	path.append(hud_path);
-	
-	ifstream input(path.c_str());
-	if (!input.good()) 
-		{
-			FG_LOG(FG_INPUT, FG_ALERT,
-			"Cannot read Hud configuration from " << path.str());
-		} 
-	else 
-		{
-			readHud(input);
-			input.close();
-		}
-
-	fgHUDalphaInit();
-	fgHUDReshape();
-
-  return 0;  // For now. Later we may use this for an error code.
+    if (!HUD)
+        HUD = new HUD_Properties;
+    return 0;  // For now. Later we may use this for an error code.
 
 }
 
@@ -741,423 +521,372 @@ int fgHUDInit2( fgAIRCRAFT * /* current_aircraft */ )
 
     HUD_style = 2;
 
-    FG_LOG( FG_COCKPIT, FG_INFO, "Initializing current aircraft HUD" );
+    SG_LOG( SG_COCKPIT, SG_INFO, "Initializing current aircraft HUD" );
 
-	FGPath path(globals->get_fg_root());
-	path.append("Huds/Minimal/default.xml");
+    SGPath path(globals->get_fg_root());
+    path.append("Huds/Minimal/default.xml");
 
 
-	ifstream input(path.c_str());
-	if (!input.good()) {
-		FG_LOG(FG_INPUT, FG_ALERT,
-			"Cannot read Hud configuration from " << path.str());
-	} 
-	else {
-		readHud(input);
-		input.close();
-	}
+    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();
+    }
 
+    if (!HUD)
+        HUD = new HUD_Properties;
     return 0;  // For now. Later we may use this for an error code.
 
 }
-//$$$ End - added, Neetha, 28 Nov 2k  
+//$$$ End - added, Neetha, 28 Nov 2k
 
-static int global_day_night_switch = DAY;
 
-void HUD_masterswitch( bool incr )
-{
-    if ( fgGetBool("/sim/hud/visibility") ) {
-	if ( global_day_night_switch == DAY ) {
-	    global_day_night_switch = NIGHT;
-	} else {
-	    fgSetBool("/sim/hud/visibility", false);
-	}
-    } else {
-        fgSetBool("/sim/hud/visibility", true);
-	global_day_night_switch = DAY;
-    }	
+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;
+    }
+
+    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
 }
 
-void HUD_brightkey( bool incr_bright )
-{
-    instr_item *pHUDInstr = HUD_deque[0];
-    int brightness        = pHUDInstr->get_brightness();
-
-    if( fgGetBool("/sim/hud/visibility") ) {
-	if( incr_bright ) {
-	    switch (brightness)
-		{
-		case BRT_LIGHT:
-		    brightness = BRT_BLACK;
-		    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:
-		    brightness = BRT_LIGHT;
-		    break;
-
-		default:
-		    fgSetBool("/sim/hud/visibility", false);
-		}
-	}
-    } else {
-	fgSetBool("/sim/hud/visibility", true);
+
+// 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;
     }
 
-    pHUDInstr->SetBrightness( brightness );
+    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()
+{
+    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);
 
-#define fgAP_CLAMP(val,min,max) ( (val) = (val) > (max) ? (max) : (val) < (min) ? (min) : (val) )
+    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();
+}
 
-static puDialogBox *HUDalphaDialog;
-static puText      *HUDalphaText;
-static puSlider    *HUDalphaHS0;
-//static puText      *HUDtextText;
-//static puSlider    *HUDalphaHS1;
-static char         SliderText[2][ 8 ];
+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);
 
-static void alpha_adj( puObject *hs ) {
-	float val ;
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
 
-	hs-> getValue ( &val ) ;
-	fgAP_CLAMP ( val, 0.1, 1.0 ) ;
-	//    printf ( "maxroll_adj( %p ) %f %f\n", hs, val, MaxRollAdjust * val ) ;
-	hud_trans_alpha = val;
-	sprintf( SliderText[ 0 ], "%05.2f", hud_trans_alpha );
-	HUDalphaText -> setLabel ( SliderText[ 0 ] ) ;
-}
+    drawHUD();
 
-void fgHUDalphaAdjust( puObject * ) {
-        fgSetBool("/sim/hud/antialiased", true);
-	FG_PUSH_PUI_DIALOG( HUDalphaDialog );
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
 }
 
-static void goAwayHUDalphaAdjust (puObject *)
+void drawHUD()
 {
-	FG_POP_PUI_DIALOG( HUDalphaDialog );
+    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);
+    }
+
+    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;
+        }
+        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;
+        }
+        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;
+        }
+    }
+
+    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);
 }
 
-static void cancelHUDalphaAdjust (puObject *)
+
+
+void fgTextList::draw()
 {
-	fgSetBool("/sim/hud/antialiased", false);
-	FG_POP_PUI_DIALOG( HUDalphaDialog );
-}
+    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());
+    }
 
-// Done once at system initialization
-void fgHUDalphaInit( void ) {
-
-	//	printf("fgHUDalphaInit\n");
-#define HORIZONTAL  FALSE
-
-	int DialogX = 40;
-	int DialogY = 100;
-	int DialogWidth = 240;
-
-	char Label[] =  "HUD Adjuster";
-	char *s;
-
-	int labelX = (DialogWidth / 2) -
-				 (puGetStringWidth( puGetDefaultLabelFont(), Label ) / 2);
-	
-	int nSliders = 1;
-	int slider_x = 10;
-	int slider_y = 55;
-	int slider_width = 220;
-	int slider_title_x = 15;
-	int slider_value_x = 160;
-	float slider_delta = 0.05f;
-
-	puFont HUDalphaLegendFont;
-	puFont HUDalphaLabelFont;
-	puGetDefaultFonts ( &HUDalphaLegendFont, &HUDalphaLabelFont );
-	
-	HUDalphaDialog = new puDialogBox ( DialogX, DialogY ); {
-		int horiz_slider_height = puGetStringHeight (HUDalphaLabelFont) +
-								  puGetStringDescender (HUDalphaLabelFont) +
-								  PUSTR_TGAP + PUSTR_BGAP + 5;
-
-		puFrame *
-		HUDalphaFrame = new puFrame ( 0, 0,
-									  DialogWidth,
-									  85 + nSliders * horiz_slider_height );
-		
-		puText *
-		HUDalphaDialogMessage = new puText ( labelX,
-											 52 + nSliders
-											 * horiz_slider_height );
-		HUDalphaDialogMessage -> setDefaultValue ( Label );
-		HUDalphaDialogMessage -> getDefaultValue ( &s );
-		HUDalphaDialogMessage -> setLabel        ( s );
-
-		HUDalphaHS0 = new puSlider ( slider_x, slider_y,
-									 slider_width, HORIZONTAL ) ;
-		HUDalphaHS0->     setDelta ( slider_delta ) ;
-		HUDalphaHS0->     setValue ( hud_trans_alpha ) ;
-		HUDalphaHS0->    setCBMode ( PUSLIDER_DELTA ) ;
-		HUDalphaHS0->  setCallback ( alpha_adj ) ;
-
-		puText *
-		HUDalphaTitle =      new puText ( slider_title_x, slider_y ) ;
-		HUDalphaTitle-> setDefaultValue ( "Alpha" ) ;
-		HUDalphaTitle-> getDefaultValue ( &s ) ;
-		HUDalphaTitle->        setLabel ( s ) ;
-		
-		HUDalphaText = new puText ( slider_value_x, slider_y ) ;
-		sprintf( SliderText[ 0 ], "%05.2f", hud_trans_alpha );
-		HUDalphaText-> setLabel ( SliderText[ 0 ] ) ;
-
-
-		puOneShot *
-		HUDalphaOkButton =     new puOneShot ( 10, 10, 60, 45 );
-		HUDalphaOkButton->         setLegend ( gui_msg_OK );
-		HUDalphaOkButton-> makeReturnDefault ( TRUE );
-		HUDalphaOkButton->       setCallback ( goAwayHUDalphaAdjust );
-		
-		puOneShot *
-		HUDalphaNoButton = new puOneShot ( 160, 10, 230, 45 );
-		HUDalphaNoButton->     setLegend ( gui_msg_CANCEL );
-		HUDalphaNoButton->   setCallback ( cancelHUDalphaAdjust );
-	}
-	FG_FINALIZE_PUI_DIALOG( HUDalphaDialog );
-
-#undef HORIZONTAL
-}
+    Font->begin();
+    for (; curString != lastString; curString++)
+        curString->Draw(Font,curString->digit);
+    Font->end();
 
-void fgHUDReshape(void) {
-	if ( HUDtext )
-		delete HUDtext;
-
-	HUD_TextSize = fgGetInt("/sim/startup/xsize") / 60;
-        HUD_TextSize = 10;
-	HUDtext = new fntRenderer();
-	HUDtext -> setFont      ( guiFntHandle ) ;
-	HUDtext -> setPointSize ( HUD_TextSize ) ;
-	HUD_TextList.setFont( HUDtext );
+    glDisable(GL_TEXTURE_2D);
+    glPopAttrib();
 }
 
 
-static void set_hud_color(float r, float g, float b) {
-	fgGetBool("/sim/hud/antialiased") ?
-			glColor4f(r,g,b,hud_trans_alpha) :
-			glColor3f(r,g,b);
-}
 
-// fgUpdateHUD
+// HUD property listener class
 //
-// 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 ) {
-  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);
+}
 
-  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();
-
-  glDisable(GL_DEPTH_TEST);
-  glDisable(GL_LIGHTING);
-
-  if( fgGetBool("/sim/hud/antialiased") ) {
-	  glEnable(GL_LINE_SMOOTH);
-//	  glEnable(GL_BLEND);
-	  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
-	  glHint(GL_LINE_SMOOTH_HINT,GL_DONT_CARE);
-	  glLineWidth(1.5);
-  } else {
-	  glLineWidth(1.0);
-  }
-
-  if( day_night_sw == DAY) {
-      switch (brightness)
-	  {
-	  case BRT_LIGHT:
-	      set_hud_color (0.1f, 0.9f, 0.1f);
-	      break;
-
-          case BRT_MEDIUM:
-	      set_hud_color (0.1f, 0.7f, 0.0f);
-	      break;
-
-          case BRT_DARK:
-	      set_hud_color (0.0f, 0.6f, 0.0f);
-	      break;
-
-          case BRT_BLACK:
-	      set_hud_color( 0.0f, 0.0f, 0.0f);
-	      break;
-
-          default:
-	      set_hud_color (0.1f, 0.9f, 0.1f);
-	  }
-  } else {
-      if( day_night_sw == NIGHT) {
-	  switch (brightness)
-	      {
-	      case BRT_LIGHT:
-		  set_hud_color (0.9f, 0.1f, 0.1f);
-		  break;
-
-              case BRT_MEDIUM:
-		  set_hud_color (0.7f, 0.0f, 0.1f);
-		  break;
-
-	      case BRT_DARK:
-		  set_hud_color (0.6f, 0.0f, 0.0f);
-		  break;
-
-	      case BRT_BLACK:
-		  set_hud_color( 0.0f, 0.0f, 0.0f);
-		  break;
-
-	      default:
-		  set_hud_color (0.6f, 0.0f, 0.0f);
-	      }
-      } else {     // Just in case default
-	  set_hud_color (0.1f, 0.9f, 0.1f);
-      }
-  }
-
-  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();
-		  
-	  }
-  }
-
-  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
+
+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());
+}
 
 
-  // temporary
-  // extern bool fgAPAltitudeEnabled( void );
-  // extern bool fgAPHeadingEnabled( void );
-  // extern bool fgAPWayPointEnabled( void );
-  // extern char *fgAPget_TargetDistanceStr( void );
-  // extern char *fgAPget_TargetHeadingStr( void );
-  // extern char *fgAPget_TargetAltitudeStr( void );
-  // extern char *fgAPget_TargetLatLonStr( void );
-
-  int apY = 480 - 80;
-//  char scratch[128];
-//  HUD_TextList.add( fgText( "AUTOPILOT", 20, apY) );
-//  apY -= 15;
-  if( current_autopilot->get_HeadingEnabled() ) {
-      HUD_TextList.add( fgText( 40, apY, 
-				current_autopilot->get_TargetHeadingStr()) );
-      apY -= 15;
-  }
-  if( current_autopilot->get_AltitudeEnabled() ) {
-      HUD_TextList.add( fgText( 40, apY, 
-				current_autopilot->get_TargetAltitudeStr()) );
-      apY -= 15;
-  }
-  if( current_autopilot->get_HeadingMode() == 
-      FGAutopilot::FG_HEADING_WAYPOINT )
-  {
-      char *wpstr;
-      wpstr = current_autopilot->get_TargetWP1Str();
-      if ( strlen( wpstr ) ) {
-	  HUD_TextList.add( fgText( 40, apY, wpstr ) );
-	  apY -= 15;
-      }
-      wpstr = current_autopilot->get_TargetWP2Str();
-      if ( strlen( wpstr ) ) {
-	  HUD_TextList.add( fgText( 40, apY, wpstr ) );
-	  apY -= 15;
-      }
-      wpstr = current_autopilot->get_TargetWP3Str();
-      if ( strlen( wpstr ) ) {
-	  HUD_TextList.add( fgText( 40, apY, wpstr ) );
-	  apY -= 15;
-      }
-  }
-  
-  HUD_TextList.draw();
-
-  HUD_LineList.draw();
-
-//  glEnable(GL_LINE_STIPPLE);
-//  glLineStipple( 1, 0x00FF );
-//  HUD_StippleLineList.draw();
-//  glDisable(GL_LINE_STIPPLE);
-
-  if( fgGetBool("/sim/hud/antialiased") ) {
-//	  glDisable(GL_BLEND);
-	  glDisable(GL_LINE_SMOOTH);
-	  glLineWidth(1.0);
-  }
-
-  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);
 }