1 // hud.hxx -- hud defines and prototypes (initial draft)
3 // Written by Michele America, started September 1997.
5 // Copyright (C) 1997 Michele F. America - nomimarketing@mail.telepac.pt
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
28 # error This library requires C++
31 #include <simgear/compiler.h>
44 //#ifdef HAVE_VALUES_H
45 //# include <values.h> // for MAXINT
48 #include <algorithm> // for_each()
49 #include <vector> // STL vector
50 #include <deque> // STL double ended queue
53 #include <simgear/constants.h>
55 #include <Include/fg_typedefs.h>
56 #include <Aircraft/aircraft.hxx>
57 #include <Aircraft/controls.hxx>
58 #include <FDM/flight.hxx>
60 #include <Main/globals.hxx>
61 #include <Main/viewmgr.hxx>
62 #include <Airports/runways.hxx>
64 #include "hud_opts.hxx"
69 SG_USING_NAMESPACE(std);
72 // some of Norman's crazy optimizations. :-)
80 int top, bottom, left, right;
84 // View mode definitions
86 enum VIEW_MODES{ HUD_VIEW, PANEL_VIEW, CHASE_VIEW, TOWER_VIEW };
89 #define HUD_FONT_SMALL 1
90 #define HUD_FONT_LARGE 2
92 enum fgLabelJust{ LEFT_JUST, CENTER_JUST, RIGHT_JUST } ;
94 #define HUDS_AUTOTICKS 0x0001
95 #define HUDS_VERT 0x0002
96 #define HUDS_HORZ 0x0000
97 #define HUDS_TOP 0x0004
98 #define HUDS_BOTTOM 0x0008
99 #define HUDS_LEFT HUDS_TOP
100 #define HUDS_RIGHT HUDS_BOTTOM
101 #define HUDS_BOTH (HUDS_LEFT | HUDS_RIGHT)
102 #define HUDS_NOTICKS 0x0010
103 #define HUDS_ARITHTIC 0x0020
104 #define HUDS_DECITICS 0x0040
105 #define HUDS_NOTEXT 0x0080
108 // #define HUD_VERTICAL 1
109 // #define HUD_HORIZONTAL 2
110 // #define HUD_FREEFLOAT 3
112 // Ladder orientation modes
113 // #define HUD_LEFT 1
114 // #define HUD_RIGHT 2
116 // #define HUD_BOTTOM 2
117 // #define HUD_V_LEFT 1
118 // #define HUD_V_RIGHT 2
119 // #define HUD_H_TOP 1
120 // #define HUD_H_BOTTOM 2
125 // #define HUD_NOLIM 2
126 // #define HUD_CIRC 3
128 // #define HUD_INSTR_LADDER 1
129 // #define HUD_INSTR_CLADDER 2
130 // #define HUD_INSTR_HORIZON 3
131 // #define HUD_INSTR_LABEL 4
134 extern float get_throttleval ( void );
135 extern float get_aileronval ( void );
136 extern float get_elevatorval ( void );
137 extern float get_elev_trimval( void );
138 extern float get_rudderval ( void );
139 extern float get_speed ( void );
140 extern float get_aoa ( void );
141 extern float get_nlf ( void );
142 extern float get_roll ( void );
143 extern float get_pitch ( void );
144 extern float get_heading ( void );
145 extern float get_view_direction( void );
146 extern float get_altitude ( void );
147 extern float get_agl ( void );
148 extern float get_sideslip ( void );
149 extern float get_frame_rate ( void );
150 extern float get_latitude ( void );
151 extern float get_lat_min ( void );
152 extern float get_longitude ( void );
153 extern float get_long_min ( void );
154 extern float get_fov ( void );
155 extern float get_vfc_ratio ( void );
156 extern float get_vfc_tris_drawn ( void );
157 extern float get_vfc_tris_culled ( void );
158 extern float get_climb_rate ( void );
159 extern float get_mach( void );
160 extern char *coord_format_lat(float);
161 extern char *coord_format_lon(float);
162 //extern char *coord_format_latlon(float latitude, float longitude); // cockpit.cxx
164 // $$$ begin - added, VS Renganathan, 13 Oct 2K
165 // #define FIGHTER_HUD
166 extern float get_anzg (void);
167 extern float get_Vx (void);
168 extern float get_Vy (void);
169 extern float get_Vz (void);
170 extern float get_Ax (void);
171 extern float get_Ay (void);
172 extern float get_Az (void);
173 extern int get_iaux1 (void);
174 extern int get_iaux2 (void);
175 extern int get_iaux3 (void);
176 extern int get_iaux4 (void);
177 extern int get_iaux5 (void);
178 extern int get_iaux6 (void);
179 extern int get_iaux7 (void);
180 extern int get_iaux8 (void);
181 extern int get_iaux9 (void);
182 extern int get_iaux10 (void);
183 extern int get_iaux11 (void);
184 extern int get_iaux12 (void);
185 extern float get_aux1(void);
186 extern float get_aux2(void);
187 extern float get_aux3(void);
188 extern float get_aux4(void);
189 extern float get_aux5 (void);
190 extern float get_aux6 (void);
191 extern float get_aux7 (void);
192 extern float get_aux8(void);
193 extern float get_aux9(void);
194 extern float get_aux10(void);
195 extern float get_aux11(void);
196 extern float get_aux12(void);
197 extern float get_aux13(void);
198 extern float get_aux14(void);
199 extern float get_aux15(void);
200 extern float get_aux16(void);
201 extern float get_aux17(void);
202 extern float get_aux18(void);
203 // $$$ end - added, VS Renganathan, 13 Oct 2K
205 extern char *get_formated_gmt_time( void );
206 extern void fgHUDReshape(void);
208 enum hudinstype{ HUDno_instr,
220 typedef struct gltagRGBTRIPLE { // rgbt
228 GLfloat x0, y0, x1, y1;
231 fgLineSeg2D( GLfloat a = 0, GLfloat b =0, GLfloat c = 0, GLfloat d =0 )
232 : x0(a), y0(b), x1(c), y1(d) {}
234 fgLineSeg2D( const fgLineSeg2D & image )
235 : x0(image.x0), y0(image.y0), x1(image.x1), y1(image.y1) {}
237 fgLineSeg2D& operator= ( const fgLineSeg2D & image ) {
238 x0 = image.x0; y0 = image.y0; x1 = image.x1; y1 = image.y1; return *this;
250 class DrawLineSeg2D {
252 void operator() (const fgLineSeg2D& elem) const {
258 #define USE_HUD_TextList
259 extern fntTexFont *HUD_Font;
260 extern float HUD_TextSize;
261 extern fntRenderer *HUDtext;
262 extern float HUD_matrix[16];
270 fgText(float x = 0, float y = 0, char *c = NULL,int digits=0): x(x), y(y)
276 fgText( const fgText & image )
277 : x(image.x), y(image.y),digit(image.digit) { strcpy(msg,image.msg); }
279 fgText& operator = ( const fgText & image ) {
280 strcpy(msg,image.msg); x = image.x; y = image.y;digit=image.digit;
284 ~fgText() { msg[0]='\0'; }
286 int getStringWidth ( char *str )
288 if ( HUDtext && str ) {
290 HUD_Font->getBBox ( str, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
291 return FloatToInt( r - l );
296 int StringWidth (void )
298 if ( HUDtext && strlen( msg )) {
300 HUD_Font->getBBox ( msg, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
301 return FloatToInt( r - l );
306 // this code is changed to display Numbers with big/small digits
307 // according to MIL Standards for example Altitude above 10000 ft
308 // is shown as 10ooo.
310 void Draw(fntRenderer *fnt,int digits) {
317 //if negative value then increase the c and p values
322 while (tmp[i]!='\0') {
323 if ((tmp[i]>='0') && (tmp[i]<='9'))
328 fnt->setPointSize(HUD_TextSize * 0.8);
333 fnt->start2f(x+p2,y);
336 fnt->setPointSize(HUD_TextSize * 1.2);
338 strncpy(tmp2,msg,p1);
344 fnt->setPointSize(HUD_TextSize * 1.2);
345 fnt->start2f( x, y );
349 //if digits not equal to 1
350 fnt->setPointSize(HUD_TextSize * 0.8);
351 fnt->start2f( x, y );
358 guiFnt.drawString( msg, FloatToInt(x), FloatToInt(y) );
363 vector < fgLineSeg2D > List;
365 fgLineList( void ) {}
366 ~fgLineList( void ) {}
367 void add( const fgLineSeg2D& seg ) { List.push_back(seg); }
368 void erase( void ) { List.erase( List.begin(), List.end() ); }
371 for_each( List.begin(), List.end(), DrawLineSeg2D());
378 vector< fgText > List;
380 fgTextList ( void ) { Font = 0; }
381 ~fgTextList( void ) {}
383 void setFont( fntRenderer *Renderer ) { Font = Renderer; }
384 void add( const fgText& String ) { List.push_back(String); }
385 void erase( void ) { List.erase( List.begin(), List.end() ); }
390 inline void Text( fgTextList &List, float x, float y, char *s)
392 List.add( fgText( x, y, s) );
395 inline void Text( fgTextList &List, const fgText &me)
400 inline void Line( fgLineList &List, float x1, float y1, float x2, float y2)
402 List.add(fgLineSeg2D(x1,y1,x2,y2));
406 // Declare our externals
407 extern fgTextList HUD_TextList;
408 extern fgLineList HUD_LineList;
409 extern fgLineList HUD_StippleLineList;
412 class instr_item { // An Abstract Base Class (ABC)
414 static UINT instances; // More than 64K instruments? Nah!
415 static int brightness;
416 static glRGBTRIPLE color;
419 RECT scrn_pos; // Framing - affects scale dimensions
420 // and orientation. Vert vs Horz, etc.
421 FLTFNPTR load_value_fn;
422 float disp_factor; // Multiply by to get numbers shown on scale.
426 UINT scr_span; // Working values for draw;
435 FLTFNPTR data_source,
441 instr_item( const instr_item & image );
443 virtual ~instr_item ();
445 int get_brightness ( void ) { return brightness;}
446 RECT get_location ( void ) { return scrn_pos; }
447 bool is_broken ( void ) { return broken; }
448 bool enabled ( void ) { return is_enabled;}
449 bool data_available ( void ) { return !!load_value_fn; }
450 float get_value ( void ) { return load_value_fn(); }
451 float data_scaling ( void ) { return disp_factor; }
452 UINT get_span ( void ) { return scr_span; }
453 POINT get_centroid ( void ) { return mid_span; }
454 UINT get_options ( void ) { return opts; }
455 int get_digits ( void ) { return digits; }
457 UINT huds_vert (UINT options) { return( options & HUDS_VERT ); }
458 UINT huds_left (UINT options) { return( options & HUDS_LEFT ); }
459 UINT huds_right (UINT options) { return( options & HUDS_RIGHT ); }
460 UINT huds_both (UINT options) {
461 return( (options & HUDS_BOTH) == HUDS_BOTH );
463 UINT huds_noticks (UINT options) { return( options & HUDS_NOTICKS ); }
464 UINT huds_notext (UINT options) { return( options & HUDS_NOTEXT ); }
465 UINT huds_top (UINT options) { return( options & HUDS_TOP ); }
466 UINT huds_bottom (UINT options) { return( options & HUDS_BOTTOM ); }
468 virtual void display_enable( bool working ) { is_enabled = !! working;}
470 virtual void update( void );
471 virtual void break_display ( bool bad );
472 virtual void SetBrightness( int illumination_level ); // fgHUDSetBright...
473 void SetPosition ( int x, int y, UINT width, UINT height );
474 UINT get_Handle( void );
475 virtual void draw( void ) = 0; // Required method in derived classes
477 void drawOneLine( float x1, float y1, float x2, float y2)
479 HUD_LineList.add(fgLineSeg2D(x1,y1,x2,y2));
481 void drawOneStippleLine( float x1, float y1, float x2, float y2)
483 HUD_StippleLineList.add(fgLineSeg2D(x1,y1,x2,y2));
485 void TextString( char *msg, float x, float y,int digit )
487 HUD_TextList.add(fgText(x, y, msg,digit));
489 int getStringWidth ( char *str )
491 if ( HUDtext && str ) {
493 HUD_Font->getBBox ( str, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
494 return FloatToInt( r - l );
499 //code to draw ticks as small circles
500 void drawOneCircle(float x1, float y1, float r)
502 glBegin(GL_LINE_LOOP); // Use polygon to approximate a circle
503 for (int count=0; count<25; count++) {
504 float cosine = r * cos(count * 2 * SG_PI/10.0);
505 float sine = r * sin(count * 2 * SG_PI/10.0);
506 glVertex2f(cosine+x1, sine+y1);
513 typedef instr_item *HIptr;
517 void operator() (HIptr elem) const {
518 if ( elem->enabled())
523 //typedef deque < instr_item * > hud_deque_type;
524 //typedef hud_deque_type::iterator hud_deque_iterator;
525 //typedef hud_deque_type::const_iterator hud_deque_const_iterator;
527 extern deque< instr_item *> HUD_deque;
528 extern int HUD_style;
529 //extern hud_deque_type HUD_deque;
531 // instr_item This class has no other purpose than to maintain
532 // a linked list of instrument and derived class
536 class instr_label : public instr_item {
540 const char *post_str;
544 char format_buffer[80];
554 FLTFNPTR data_source,
555 const char *label_format,
556 const char *pre_label_string,
557 const char *post_label_string,
560 fgLabelJust justification,
571 instr_label( const instr_label & image);
572 virtual void draw( void ); // Required method in base class
575 typedef instr_label * pInstlabel;
578 class lat_label : public instr_item {
582 const char *post_str;
586 char format_buffer[80];
593 FLTFNPTR data_source,
594 const char *label_format,
595 const char *pre_label_string,
596 const char *post_label_string,
599 fgLabelJust justification,
607 lat_label( const lat_label & image);
608 virtual void draw( void ); // Required method in base class
611 typedef lat_label * pLatlabel;
613 class lon_label : public instr_item {
617 const char *post_str;
621 char format_buffer[80];
628 FLTFNPTR data_source,
629 const char *label_format,
630 const char *pre_label_string,
631 const char *post_label_string,
634 fgLabelJust justification,
643 lon_label( const lon_label & image);
644 virtual void draw( void ); // Required method in base class
647 typedef lon_label * pLonlabel;
650 // fgRunway_instr This class is responsible for rendering the active runway
651 // in the hud (if visible).
652 class runway_instr : public instr_item
655 void boundPoint(const sgdVec3& v, sgdVec3& m);
656 bool boundOutsidePoints(sgdVec3& v, sgdVec3& m);
657 bool drawLine(const sgdVec3& a1, const sgdVec3& a2, const sgdVec3& p1, const sgdVec3& p2);
659 bool get_active_runway(FGRunway& rwy);
660 void get_rwy_points(sgdVec3 *points);
661 void setLineWidth(void);
663 sgdVec3 points3d[6],points2d[6];
664 double mm[16],pm[16], arrowScale, arrowRad, lnScale, scaleDist, default_pitch, default_heading;
667 FGViewer* cockpit_view;
668 unsigned short stippleOut,stippleCen;
669 bool drawIA,drawIAAlways;
679 bool working = true);
681 virtual void draw( void ); // Required method in base class
682 void setArrowRotationRadius(double radius);
683 void setArrowScale(double scale); // Scales the runway indication arrow
684 void setDrawArrow(bool draw); // Draws arrow when runway is not visible in HUD if draw=true
685 void setDrawArrowAlways(bool draw); //Always draws arrow if draw=true;
686 void setLineScale(double scale); //Sets the maximum line scale
687 void setScaleDist(double dist_nm); //Sets the distance where to start scaling the lines
688 void setStippleOutline(unsigned short stipple); //Sets the stipple pattern of the outline of the runway
689 void setStippleCenterline(unsigned short stipple); //Sets the stipple patter of the center line of the runway
694 // instr_scale This class is an abstract base class for both moving
695 // scale and moving needle (fixed scale) indicators. It
696 // does not draw itself, but is not instanciable.
699 class instr_scale : public instr_item {
701 float range_shown; // Width Units.
702 float Maximum_value; // ceiling.
703 float Minimum_value; // Representation floor.
704 float scale_factor; // factor => screen units/range values.
705 UINT Maj_div; // major division marker units
706 UINT Min_div; // minor division marker units
707 UINT Modulo; // Roll over point
708 int signif_digits; // digits to show to the right.
725 bool working = true);
727 virtual ~instr_scale();
728 instr_scale( const instr_scale & image);
730 virtual void draw ( void ) {}; // No-op here. Defined in derived classes.
731 UINT div_min ( void ) { return Min_div;}
732 UINT div_max ( void ) { return Maj_div;}
733 float min_val ( void ) { return Minimum_value;}
734 float max_val ( void ) { return Maximum_value;}
735 UINT modulo ( void ) { return Modulo; }
736 float factor ( void ) { return scale_factor;}
737 float range_to_show ( void ) { return range_shown;}
740 // hud_card_ This class displays the indicated quantity on
741 // a scale that moves past the pointer. It may be
742 // horizontal or vertical, read above(left) or below(right) of the base
745 class hud_card : public instr_scale {
749 float half_width_units;
750 bool draw_tick_bottom;
752 bool draw_tick_right;
754 bool draw_cap_bottom;
788 bool draw_tick_bottom,
790 bool draw_tick_right,
792 bool draw_cap_bottom,
809 hud_card( const hud_card & image);
810 // virtual void display_enable( bool setting );
811 virtual void draw( void ); // Required method in base class
812 void circles(float,float,float);
813 void fixed(float,float,float,float,float,float);
814 void zoomed_scale(int,int);
817 typedef hud_card * pCardScale;
819 class gauge_instr : public instr_scale {
837 gauge_instr( const gauge_instr & image);
838 virtual void draw( void ); // Required method in base class
841 typedef gauge_instr * pGaugeInst;
843 // dual_instr_item This class was created to form the base class
844 // for both panel and HUD Turn Bank Indicators.
846 class dual_instr_item : public instr_item {
848 FLTFNPTR alt_data_source;
851 dual_instr_item ( int x,
855 FLTFNPTR chn1_source,
856 FLTFNPTR chn2_source,
860 virtual ~dual_instr_item() {};
861 dual_instr_item( const dual_instr_item & image);
863 float current_ch1( void ) { return (float)alt_data_source();}
864 float current_ch2( void ) { return (float)get_value();}
865 virtual void draw( void ) { }
868 class fgTBI_instr : public dual_instr_item
882 FLTFNPTR chn1_source,
883 FLTFNPTR chn2_source,
891 fgTBI_instr( const fgTBI_instr & image);
895 UINT bank_limit( void ) { return BankLimit;}
896 UINT slew_limit( void ) { return SlewLimit;}
898 virtual void draw( void ); // Required method in base class
901 typedef fgTBI_instr * pTBI;
903 class HudLadder : public dual_instr_item {
913 string hudladder_type;
916 bool velocity_vector;
920 bool climb_dive_marker;
921 bool glide_slope_marker;
924 bool waypoint_marker;
930 // The Ladder has it's own temporary display lists
933 fgLineList StippleLineList;
936 HudLadder( const string& name,
942 FLTFNPTR ptch_source,
943 FLTFNPTR roll_source,
945 float division_units,
946 float minor_division,
951 bool velocity_vector,
955 bool climb_dive_marker,
956 bool glide_slope_marker,
959 bool waypoint_marker,
969 HudLadder( const HudLadder & image );
970 virtual void draw( void );
971 void drawZenith(float,float,float);
972 void drawNadir(float, float, float);
974 void Text( float x, float y, char *s)
976 TextList.add( fgText( x, y, s) );
979 void Line( float x1, float y1, float x2, float y2)
981 LineList.add(fgLineSeg2D(x1,y1,x2,y2));
984 void StippleLine( float x1, float y1, float x2, float y2)
986 StippleLineList.add(fgLineSeg2D(x1,y1,x2,y2));
991 //using namespace std;
992 //deque <instr_item> * Hdeque_ptr;
994 extern int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ );
995 extern int fgHUDInit2( fgAIRCRAFT * /* current_aircraft */ );
996 extern void fgUpdateHUD( void );
997 extern void fgUpdateHUD( GLfloat x_start, GLfloat y_start,
998 GLfloat x_end, GLfloat y_end );
1001 bool AddHUDInstrument( instr_item *pBlackBox );
1002 void DrawHUD ( void );
1003 bool DamageInstrument( INSTR_HANDLE unit );
1004 bool RepairInstrument( INSTR_HANDLE unit );
1007 void fgUpdateHUD ( Hptr hud );
1008 void fgUpdateHUD2( Hptr hud ); // Future use?
1009 void fgHUDSetTimeMode( Hptr hud, int time_of_day );
1015 class HUD_Properties : public SGPropertyChangeListener {
1018 void valueChanged(SGPropertyNode *n);
1019 void setColor() const;
1020 bool isVisible() const { return _visible; }
1021 bool isAntialiased() const { return _antialiased; }
1022 bool isTransparent() const { return _transparent; }
1023 float alphaClamp() const { return _cl; }
1026 float clamp(float f) { return f < 0.0f ? 0.0f : f > 1.0f ? 1.0f : f; }
1027 SGPropertyNode_ptr _current;
1028 SGPropertyNode_ptr _visibility;
1029 SGPropertyNode_ptr _antialiasing;
1030 SGPropertyNode_ptr _transparency;
1031 SGPropertyNode_ptr _red, _green, _blue, _alpha;
1032 SGPropertyNode_ptr _alpha_clamp;
1033 SGPropertyNode_ptr _brightness;
1037 float _r, _g, _b, _a, _cl;