X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FCockpit%2Fhud.cxx;h=60b4a14aad9b247c20dea4b1ab1db200c48ca181;hb=c0b4531d04215f76f9cf65afbdaed6b7c0b32634;hp=17082b83012973c67f0e0bde0586798113955245;hpb=bff544aada682998cb5254060b81a736f7781f50;p=flightgear.git

diff --git a/src/Cockpit/hud.cxx b/src/Cockpit/hud.cxx
index 17082b830..60b4a14aa 100644
--- a/src/Cockpit/hud.cxx
+++ b/src/Cockpit/hud.cxx
@@ -20,6 +20,11 @@
 //
 // $Id$
 
+#include <simgear/compiler.h>
+#include <simgear/structure/exception.hxx>
+
+#include STL_STRING
+#include STL_FSTREAM
 
 #ifdef HAVE_CONFIG_H
 #  include <config.h>
@@ -32,32 +37,28 @@
 #ifdef __BORLANDC__
 #  define exception c_exception
 #endif
+
 #include <math.h>
 
-#include <GL/glut.h>
 #include <stdlib.h>
-#include <string.h>
-#include <fstream.h>
+#include <stdio.h>		// char related functions
+#include <string.h>		// strcmp()
 
 #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 <Autopilot/xmlauto.hxx>
 #include <GUI/gui.h>
 #include <Main/globals.hxx>
-#ifdef FG_NETWORK_OLK
-#include <NetworkOLK/network.h>
-#endif
+#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);
+    extern void *memmove(void *, const void *, size_t);
 }
 #endif
 
@@ -140,6 +141,19 @@ static bool	glide;
 static float	glide_slope_val;
 static bool	worm_energy;
 static bool	waypoint;
+static string type_tick;//hud
+static string length_tick;//hud
+static bool label_box;//hud
+static int digits; //suma
+static float radius; //suma
+static int divisions; //suma
+static int zoom; //suma
+static int zenith; //suma
+static int nadir ; //suma
+static int hat; //suma
+static bool tsi; //suma
+static float rad; //suma
+
 
 static FLTFNPTR load_fn;    
 static fgLabelJust justification;
@@ -154,10 +168,13 @@ static instr_item * readLabel( const SGPropertyNode * node);
 static instr_item * readTBI( const SGPropertyNode * node);
 //$$$ end   - added, Neetha, 28 Nov 2k
 
+static void drawHUD();
+static void fgUpdateHUDVirtual();
+
 void fgHUDalphaInit( void );
 
 class locRECT {
-  public:
+public:
     RECT rect;
 
     locRECT( UINT left, UINT top, UINT right, UINT bottom);
@@ -166,88 +183,14 @@ class locRECT {
 
 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 * 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);
-    }
-    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
 //
@@ -265,44 +208,57 @@ 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);
+    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");
+    zenith			= node->getIntValue("zenith");  //suma
+    nadir			= node->getIntValue("nadir");  //suma
+    hat				= node->getIntValue("hat");
+    // The factor assumes a base of 55 degrees per 640 pixels.
+    // Invert to convert the "compression" factor to a
+    // pixels-per-degree number.
+    if(fgGetBool("/sim/hud/enable3d", true))
+    {
+        if (HUD_style == 1)
+        {
+            factor = 1;
+            factor = (640./55.) / factor;
+        }
+    }
+
+    SG_LOG(SG_INPUT, SG_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, zenith, nadir, hat);
 				
-				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;
+    return p;
 		
 } //end readLadder
 
@@ -310,428 +266,475 @@ 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");//hud Can be 'circle' or 'line'
+    length_tick		= node->getStringValue("tick_length");//hud For variable length
+    working			= node->getBoolValue("working");
+    radius			= node->getFloatValue("radius"); //suma
+    divisions		= node->getIntValue("divisions"); //suma
+    zoom			= node->getIntValue("zoom"); //suma
+
+    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,//hud
+                                         length_tick,//hud
+                                         working,
+                                         radius, //suma
+                                         divisions, //suma
+                                         zoom  //suma
+                                         );
+    } 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 = (globals->get_options()->get_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;
+    instr_item *p;
+
+    int font_size = (fgGetInt("/sim/startup/xsize") > 1000) ? HUD_FONT_LARGE : HUD_FONT_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);
+    label_box		= node->getBoolValue("label_box",false);//hud
+    working             = node->getBoolValue("working");
+    digits		= node->getIntValue("digits"); //suma
+
+
+    SG_LOG(SG_INPUT, SG_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== "aux1" ) {
+        load_fn = get_aux1;
+    } else if ( loadfn == "aux2" ) {
+        load_fn = get_aux2;
+    } else if ( loadfn == "aux3" ) {
+        load_fn = get_aux3;
+    } else if ( loadfn == "aux4" ) {
+        load_fn = get_aux4;
+    } else if ( loadfn == "aux5" ) {
+        load_fn = get_aux5;
+    } else if ( loadfn == "aux6" ) {
+        load_fn = get_aux6;
+    } else if ( loadfn == "aux7" ) {
+        load_fn = get_aux7;
+    } else if ( loadfn == "aux8" ) {
+        load_fn = get_aux8;
+    } else if ( loadfn == "aux9" ) {
+        load_fn = get_aux9;
+    } else if ( loadfn == "aux10" ) {
+        load_fn = get_aux10;
+    } else if ( loadfn == "aux11" ) {
+        load_fn = get_aux11;
+    } else if ( loadfn == "aux12" ) {
+        load_fn = get_aux12;
+    } 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 == "aux16" ) {
+        load_fn = get_aux16;
+    } else if ( loadfn == "aux17" ) {
+        load_fn = get_aux17;
+    } else if ( loadfn == "aux18" ) {
+        load_fn = get_aux18;
+    } 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 == "anzg" ) {
+        load_fn = get_anzg;
+    } else if ( loadfn == "longitude" ) {
+        load_fn   = get_longitude;
+    } else if (loadfn=="throttleval") {
+        load_fn = get_throttleval;
+    }
+
+    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,
+                                         label_box, //hud
+                                         working,
+                                         digits); //suma
+
+    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"); //suma
+    rad			   = node->getFloatValue("rad"); //suma
+
+    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, //suma
+                                        rad); //suma
+
+    return p;
 } //end readTBI
 
 
 int readInstrument(const SGPropertyNode * node)
 {
+    static const SGPropertyNode *startup_units_node
+        = fgGetNode("/sim/startup/units");
 
-	instr_item *HIptr;
+    instr_item *HIptr;
     
-    if ( globals->get_options()->get_units() == FGOptions::FG_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++) {
-
-					HIptr = readLadder(ladder_group->getChild(j));
-					HUD_deque.insert( HUD_deque.begin(), HIptr);
+    if (ladder_group != 0) {
+        int nLadders = ladder_group->nChildren();
+        for (int j = 0; j < nLadders; j++) {
+            
+            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++) {
+        }// for - ladders
+    }
 
-					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++) {
+            
+            HIptr = readCard(card_group->getChild(j));
+            HUD_deque.insert( HUD_deque.begin(), HIptr);
 
-				}//for - cards
-			}
+        }//for - cards
+    }
 
-			const SGPropertyNode * label_group = node->getNode("labels");
-			if (label_group != 0) {
-				int nLabels = label_group->nChildren();
-				for (int j = 0; j < nLabels; 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 = readLabel(label_group->getChild(j));
-					HUD_deque.insert( HUD_deque.begin(), HIptr);
+            HIptr = readLabel(label_group->getChild(j));
+            HUD_deque.insert( HUD_deque.begin(), HIptr);
 
-				}//for - labels
-			}
+        }//for - labels
+    }
 
-			const SGPropertyNode * tbi_group = node->getNode("tbis");
-			if (tbi_group != 0) {
-				int nTbis = tbi_group->nChildren();
-				for (int j = 0; j < nTbis; j++) {
+    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);
+            HIptr = readTBI(tbi_group->getChild(j));
+            HUD_deque.insert( HUD_deque.begin(), HIptr);
 
-				}//for - tbis
-			}
- return 0;
+        }//for - tbis
+    }
+    return 0;
 }//end readinstrument
 
+
 int readHud( istream &input ) 
 {
 
-	SGPropertyNode root;
+    SGPropertyNode root;
 
-
-	if (!readProperties(input, &root)) {
-		FG_LOG(FG_INPUT, FG_ALERT, "Malformed property list for hud.");
-		return 0;
-	}
+    try {
+        readProperties(input, &root);
+    } catch (const sg_exception &e) {
+        guiErrorMessage("Error reading HUD: ", e);
+        return 0;
+    }
   
 	
-	FG_LOG(FG_INPUT, FG_INFO, "Read properties for  " <<
-		root.getStringValue("name"));
+    SG_LOG(SG_INPUT, SG_INFO, "Read properties for  " <<
+           root.getStringValue("name"));
 
 
-	HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());  // empty the HUD deque
+    HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());  // empty the HUD deque
 
 
-	FG_LOG(FG_INPUT, FG_INFO, "Reading Hud instruments");
+    SG_LOG(SG_INPUT, SG_INFO, "Reading Hud instruments");
 
-	const SGPropertyNode * instrument_group = root.getChild("instruments");
-	int nInstruments = instrument_group->nChildren();
+    const SGPropertyNode * instrument_group = root.getChild("instruments");
+    int nInstruments = instrument_group->nChildren();
 
-	for (int i = 0; i < nInstruments; i++) {
+    for (int i = 0; i < nInstruments; i++) {
 		
-		const SGPropertyNode * node = instrument_group->getChild(i);
-
-		FGPath path( globals->get_options()->get_fg_root() );
-		path.append(node->getStringValue("path"));
-
-		FG_LOG(FG_INPUT, FG_INFO, "Reading Instrument "
-		<< node->getName()
-		<< " from "
-		<< path.str());
-
-
-		SGPropertyNode root2;
-		if (readProperties(path.str(), &root2)) {
-
-			readInstrument(&root2);
-
-		}//if
-	}//for loop(i)
- return 0;
+        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 */ )
 {
 
+    HUD_style = 1;
 
-	HUD_style = 1;
-
-	FG_LOG( FG_COCKPIT, FG_INFO, "Initializing current aircraft HUD" );
+    SG_LOG( SG_COCKPIT, SG_INFO, "Initializing current aircraft HUD" );
 
     string hud_path =
-	globals->get_props()->getStringValue("/sim/hud/path",
-					  "Huds/Default/default.xml");
-	FGPath path(globals->get_options()->get_fg_root());
-	path.append(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()) 
-		{
-			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();
+    }
 
-	fgHUDalphaInit();
-	fgHUDReshape();
+    fgHUDalphaInit();
+    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;
+    }
 
-  return 0;  // For now. Later we may use this for an error code.
+//    HUD_TextSize = fgGetInt("/sim/startup/xsize") / 60;
+    HUD_TextSize = 10;
+    HUDtext = new fntRenderer();
+    HUDtext -> setFont      ( guiFntHandle ) ;
+    HUDtext -> setPointSize ( HUD_TextSize ) ;
+    HUD_TextList.setFont( HUDtext );
+    
+    return 0;  // For now. Later we may use this for an error code.
 
 }
 
@@ -740,40 +743,39 @@ 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_options()->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();
+    }
 
     return 0;  // For now. Later we may use this for an error code.
 
 }
 //$$$ End - added, Neetha, 28 Nov 2k  
 
-int global_day_night_switch = DAY;
+static int global_day_night_switch = HUD_DAY;
 
 void HUD_masterswitch( bool incr )
 {
-    if ( globals->get_options()->get_hud_status() ) {
-	if ( global_day_night_switch == DAY ) {
-	    global_day_night_switch = NIGHT;
+    if ( fgGetBool("/sim/hud/visibility") ) {
+	if ( global_day_night_switch == HUD_DAY ) {
+	    global_day_night_switch = HUD_NIGHT;
 	} else {
-	    globals->get_options()->set_hud_status( false );
+	    fgSetBool("/sim/hud/visibility", false);
 	}
     } else {
-	globals->get_options()->set_hud_status( true );
-	global_day_night_switch = DAY;
+        fgSetBool("/sim/hud/visibility", true);
+	global_day_night_switch = HUD_DAY;
     }	
 }
 
@@ -782,54 +784,54 @@ void HUD_brightkey( bool incr_bright )
     instr_item *pHUDInstr = HUD_deque[0];
     int brightness        = pHUDInstr->get_brightness();
 
-    if( globals->get_options()->get_hud_status() ) {
+    if( fgGetBool("/sim/hud/visibility") ) {
 	if( incr_bright ) {
 	    switch (brightness)
 		{
-		case BRT_LIGHT:
-		    brightness = BRT_BLACK;
+		case HUD_BRT_LIGHT:
+		    brightness = HUD_BRT_BLACK;
 		    break;
 
-		case BRT_MEDIUM:
-		    brightness = BRT_LIGHT;
+		case HUD_BRT_MEDIUM:
+		    brightness = HUD_BRT_LIGHT;
 		    break;
 
-		case BRT_DARK:
-		    brightness = BRT_MEDIUM;
+		case HUD_BRT_DARK:
+		    brightness = HUD_BRT_MEDIUM;
 		    break;
 
-		case BRT_BLACK:
-		    brightness = BRT_DARK;
+		case HUD_BRT_BLACK:
+		    brightness = HUD_BRT_DARK;
 		    break;
 
 		default:
-		    brightness = BRT_BLACK;
+		    brightness = HUD_BRT_BLACK;
 		}
 	} else {
 	    switch (brightness)
 		{
-		case BRT_LIGHT:
-		    brightness = BRT_MEDIUM;
+		case HUD_BRT_LIGHT:
+		    brightness = HUD_BRT_MEDIUM;
 		    break;
 
-		case BRT_MEDIUM:
-		    brightness = BRT_DARK;
+		case HUD_BRT_MEDIUM:
+		    brightness = HUD_BRT_DARK;
 		    break;
 
-		case BRT_DARK:
-		    brightness = BRT_BLACK;
+		case HUD_BRT_DARK:
+		    brightness = HUD_BRT_BLACK;
 		    break;
 
-		case BRT_BLACK:
-		    brightness = BRT_LIGHT;
+		case HUD_BRT_BLACK:
+		    brightness = HUD_BRT_LIGHT;
 		    break;
 
 		default:
-		    globals->get_options()->set_hud_status(0);
+		    fgSetBool("/sim/hud/visibility", false);
 		}
 	}
     } else {
-	globals->get_options()->set_hud_status(true);
+	fgSetBool("/sim/hud/visibility", true);
     }
 
     pHUDInstr->SetBrightness( brightness );
@@ -846,131 +848,141 @@ static puSlider    *HUDalphaHS0;
 static char         SliderText[2][ 8 ];
 
 static void alpha_adj( puObject *hs ) {
-	float val ;
-
-	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 ] ) ;
+    float val ;
+
+    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 ] ) ;
 }
 
 void fgHUDalphaAdjust( puObject * ) {
-	globals->get_options()->set_anti_alias_hud(1);
-	FG_PUSH_PUI_DIALOG( HUDalphaDialog );
+    fgSetBool("/sim/hud/antialiased", true);
+    FG_PUSH_PUI_DIALOG( HUDalphaDialog );
 }
 
 static void goAwayHUDalphaAdjust (puObject *)
 {
-	FG_POP_PUI_DIALOG( HUDalphaDialog );
+    FG_POP_PUI_DIALOG( HUDalphaDialog );
 }
 
 static void cancelHUDalphaAdjust (puObject *)
 {
-	globals->get_options()->set_anti_alias_hud(0);
-	FG_POP_PUI_DIALOG( HUDalphaDialog );
+    fgSetBool("/sim/hud/antialiased", false);
+    FG_POP_PUI_DIALOG( HUDalphaDialog );
 }
 
 // Done once at system initialization
 void fgHUDalphaInit( void ) {
 
-	//	printf("fgHUDalphaInit\n");
+    //	printf("fgHUDalphaInit\n");
 #define HORIZONTAL  FALSE
 
-	int DialogX = 40;
-	int DialogY = 100;
-	int DialogWidth = 240;
+    int DialogX = 40;
+    int DialogY = 100;
+    int DialogWidth = 240;
 
-	char Label[] =  "HUD Adjuster";
-	char *s;
+    char Label[] =  "HUD Adjuster";
+    char *s;
 
-	int labelX = (DialogWidth / 2) -
-				 (puGetStringWidth( puGetDefaultLabelFont(), Label ) / 2);
+    int labelX = (DialogWidth / 2) -
+        ( puGetDefaultLabelFont().getStringWidth( 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 );
+    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 );
+    HUDalphaDialog = new puDialogBox ( DialogX, DialogY ); {
+        int horiz_slider_height = HUDalphaLabelFont.getStringHeight() +
+            HUDalphaLabelFont.getStringDescender() +
+            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 ) ;
 		
-		puOneShot *
-		HUDalphaNoButton = new puOneShot ( 160, 10, 230, 45 );
-		HUDalphaNoButton->     setLegend ( gui_msg_CANCEL );
-		HUDalphaNoButton->   setCallback ( cancelHUDalphaAdjust );
-	}
-	FG_FINALIZE_PUI_DIALOG( HUDalphaDialog );
+        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
 }
 
+
 void fgHUDReshape(void) {
-	if ( HUDtext )
-		delete HUDtext;
-
-	HUD_TextSize = globals->get_options()->get_xsize() / 60;
-        HUD_TextSize = 10;
-	HUDtext = new fntRenderer();
-	HUDtext -> setFont      ( guiFntHandle ) ;
-	HUDtext -> setPointSize ( HUD_TextSize ) ;
-	HUD_TextList.setFont( HUDtext );
+#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
 }
 
 
 static void set_hud_color(float r, float g, float b) {
-	globals->get_options()->get_anti_alias_hud() ?
-			glColor4f(r,g,b,hud_trans_alpha) :
-			glColor3f(r,g,b);
+    fgGetBool("/sim/hud/antialiased") ?
+        glColor4f(r,g,b,hud_trans_alpha) :
+        glColor3f(r,g,b);
 }
 
+
 // fgUpdateHUD
 //
 // Performs a once around the list of calls to instruments installed in
@@ -978,185 +990,257 @@ static void set_hud_color(float r, float g, float b) {
 // 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;
+	
+    static const SGPropertyNode *enable3d_node = fgGetNode("/sim/hud/enable3d");
+    if( HUD_style == 1 && enable3d_node->getBoolValue() )
+    {
+        fgUpdateHUDVirtual();
+        return;
     }
+    
+    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 );
+    }
+}
 
-  HUD_TextList.erase();
-  HUD_LineList.erase();
-//  HUD_StippleLineList.erase();
+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);
+
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
   
-  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( globals->get_options()->get_anti_alias_hud() ) {
-	  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
+    // 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;
+    }
 
-  // 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.erase();
+    HUD_LineList.erase();
+    // HUD_StippleLineList.erase();
   
-  HUD_TextList.draw();
-
-  HUD_LineList.draw();
-
-//  glEnable(GL_LINE_STIPPLE);
-//  glLineStipple( 1, 0x00FF );
-//  HUD_StippleLineList.draw();
-//  glDisable(GL_LINE_STIPPLE);
-
-  if( globals->get_options()->get_anti_alias_hud() ) {
-//	  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();
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_LIGHTING);
+
+    static const SGPropertyNode *antialiased_node
+        = fgGetNode("/sim/hud/antialiased", true);
+    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];
+
+    if( antialiased_node->getBoolValue() ) {
+        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(2.0);
+    } else {
+        glLineWidth(1.0);
+    }
+
+    if( global_day_night_switch == HUD_DAY) {
+        switch (HUD_deque[0]->get_brightness())
+            {
+            case HUD_BRT_LIGHT:
+                set_hud_color (0.1f, 0.9f, 0.1f);
+                break;
+
+            case HUD_BRT_MEDIUM:
+                set_hud_color (0.1f, 0.7f, 0.0f);
+                break;
+
+            case HUD_BRT_DARK:
+                set_hud_color (0.0f, 0.6f, 0.0f);
+                break;
+
+            case HUD_BRT_BLACK:
+                set_hud_color( 0.0f, 0.0f, 0.0f);
+                break;
+
+            default:
+                set_hud_color (0.1f, 0.9f, 0.1f);
+            }
+    } else {
+        if( global_day_night_switch == HUD_NIGHT) {
+            switch (HUD_deque[0]->get_brightness())
+                {
+                case HUD_BRT_LIGHT:
+                    set_hud_color (0.9f, 0.1f, 0.1f);
+                    break;
+
+                case HUD_BRT_MEDIUM:
+                    set_hud_color (0.7f, 0.0f, 0.1f);
+                    break;
+
+                case HUD_BRT_DARK:
+                    set_hud_color (0.6f, 0.0f, 0.0f);
+                    break;
+
+                case HUD_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);
+        }
+    }
+
+    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( antialiased_node->getBoolValue() ) {
+        // glDisable(GL_BLEND);
+        glDisable(GL_LINE_SMOOTH);
+        glLineWidth(1.0);
+    }
+
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_LIGHTING);
 }