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>
48 #include <algorithm> // for_each()
49 #include <vector> // STL vector
50 #include <deque> // STL double ended queue
55 #include <simgear/math/SGMath.hxx>
56 #include <simgear/constants.h>
58 #include <Include/fg_typedefs.h>
59 #include <Aircraft/aircraft.hxx>
60 #include <Aircraft/controls.hxx>
61 #include <FDM/flight.hxx>
63 #include <Main/fg_props.hxx>
64 #include <Main/globals.hxx>
65 #include <Main/viewmgr.hxx>
66 #include <Airports/runways.hxx>
73 #define float_to_int(v) SGMiscf::roundToInt(v)
75 // some of Norman's crazy optimizations. :-)
83 int top, bottom, left, right;
87 // View mode definitions
89 enum VIEW_MODES{ HUD_VIEW, PANEL_VIEW, CHASE_VIEW, TOWER_VIEW };
92 #define HUD_FONT_SMALL 1
93 #define HUD_FONT_LARGE 2
95 enum fgLabelJust{ LEFT_JUST, CENTER_JUST, RIGHT_JUST } ;
97 #define HUDS_AUTOTICKS 0x0001
98 #define HUDS_VERT 0x0002
99 #define HUDS_HORZ 0x0000
100 #define HUDS_TOP 0x0004
101 #define HUDS_BOTTOM 0x0008
102 #define HUDS_LEFT HUDS_TOP
103 #define HUDS_RIGHT HUDS_BOTTOM
104 #define HUDS_BOTH (HUDS_LEFT | HUDS_RIGHT)
105 #define HUDS_NOTICKS 0x0010
106 #define HUDS_ARITHTIC 0x0020
107 #define HUDS_DECITICS 0x0040
108 #define HUDS_NOTEXT 0x0080
111 extern float get_throttleval ( void );
112 extern float get_aileronval ( void );
113 extern float get_elevatorval ( void );
114 extern float get_elev_trimval( void );
115 extern float get_rudderval ( void );
116 extern float get_speed ( void );
117 extern float get_aoa ( void );
118 extern float get_nlf ( void );
119 extern float get_roll ( void );
120 extern float get_pitch ( void );
121 extern float get_heading ( void );
122 extern float get_view_direction( void );
123 extern float get_altitude ( void );
124 extern float get_agl ( void );
125 extern float get_sideslip ( void );
126 extern float get_frame_rate ( void );
127 extern float get_latitude ( void );
128 extern float get_lat_min ( void );
129 extern float get_longitude ( void );
130 extern float get_long_min ( void );
131 extern float get_fov ( void );
132 extern float get_vfc_ratio ( void );
133 extern float get_vfc_tris_drawn ( void );
134 extern float get_vfc_tris_culled ( void );
135 extern float get_climb_rate ( void );
136 extern float get_mach( void );
137 extern char *coord_format_lat(float);
138 extern char *coord_format_lon(float);
140 // $$$ begin - added, VS Renganathan, 13 Oct 2K
141 extern float get_anzg (void);
142 extern float get_Vx (void);
143 extern float get_Vy (void);
144 extern float get_Vz (void);
145 extern float get_Ax (void);
146 extern float get_Ay (void);
147 extern float get_Az (void);
148 extern int get_iaux1 (void);
149 extern int get_iaux2 (void);
150 extern int get_iaux3 (void);
151 extern int get_iaux4 (void);
152 extern int get_iaux5 (void);
153 extern int get_iaux6 (void);
154 extern int get_iaux7 (void);
155 extern int get_iaux8 (void);
156 extern int get_iaux9 (void);
157 extern int get_iaux10 (void);
158 extern int get_iaux11 (void);
159 extern int get_iaux12 (void);
160 extern float get_aux1(void);
161 extern float get_aux2(void);
162 extern float get_aux3(void);
163 extern float get_aux4(void);
164 extern float get_aux5 (void);
165 extern float get_aux6 (void);
166 extern float get_aux7 (void);
167 extern float get_aux8(void);
168 extern float get_aux9(void);
169 extern float get_aux10(void);
170 extern float get_aux11(void);
171 extern float get_aux12(void);
172 extern float get_aux13(void);
173 extern float get_aux14(void);
174 extern float get_aux15(void);
175 extern float get_aux16(void);
176 extern float get_aux17(void);
177 extern float get_aux18(void);
178 // $$$ end - added, VS Renganathan, 13 Oct 2K
180 extern char *get_formated_gmt_time( void );
182 enum hudinstype{ HUDno_instr,
194 typedef struct gltagRGBTRIPLE { // rgbt
202 GLfloat x0, y0, x1, y1;
205 fgLineSeg2D( GLfloat a = 0, GLfloat b =0, GLfloat c = 0, GLfloat d =0 )
206 : x0(a), y0(b), x1(c), y1(d) {}
208 fgLineSeg2D( const fgLineSeg2D & image )
209 : x0(image.x0), y0(image.y0), x1(image.x1), y1(image.y1) {}
211 fgLineSeg2D& operator= ( const fgLineSeg2D & image ) { // seems unused
212 x0 = image.x0; y0 = image.y0; x1 = image.x1; y1 = image.y1; return *this;
222 class DrawLineSeg2D {
224 void operator() (const fgLineSeg2D& elem) const {
230 #define USE_HUD_TextList
231 extern fntTexFont *HUD_Font;
232 extern float HUD_TextSize;
233 extern fntRenderer *HUDtext;
234 extern float HUD_matrix[16];
244 fgText(float x, float y, const string& c, bool digits=false): x(x), y(y), msg( c), digit( digits) {};
246 fgText( const fgText & image )
247 : x(image.x), y(image.y), msg(image.msg), digit(image.digit) { }
249 fgText& operator = ( const fgText & image ) {
250 x = image.x; y = image.y; msg= image.msg; digit = image.digit;
254 static int getStringWidth ( const char *str )
256 if ( HUDtext && str ) {
258 HUD_Font->getBBox ( str, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
259 return float_to_int( r - l );
266 if ( HUDtext && msg != "") {
268 HUD_Font->getBBox ( msg.c_str(), HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
269 return float_to_int( r - l );
274 // this code is changed to display Numbers with big/small digits
275 // according to MIL Standards for example Altitude above 10000 ft
276 // is shown as 10ooo.
278 void Draw(fntRenderer *fnt) {
285 //if negative value then increase the c and p values
290 for (string::size_type i = 0; i < msg.size(); i++) {
291 if ((msg[i]>='0') && (msg[i]<='9'))
294 float orig_size = fnt->getPointSize();
296 fnt->setPointSize(HUD_TextSize * 0.8);
297 int p2=(c-3)*8; //advance to the last 3 digits
299 fnt->start2f(x+p2,y);
300 fnt->puts(msg.c_str() + c - 3); // display last 3 digits
302 fnt->setPointSize(HUD_TextSize * 1.2);
305 fnt->puts(msg.substr(0,c-3).c_str());
307 fnt->setPointSize(HUD_TextSize * 1.2);
308 fnt->start2f( x, y );
309 fnt->puts(msg.c_str());
311 fnt->setPointSize(orig_size);
314 fnt->start2f( x, y );
315 fnt->puts( msg.c_str()) ;
321 guiFnt.drawString( msg.c_str(), float_to_int(x), float_to_int(y) );
326 vector < fgLineSeg2D > List;
328 fgLineList( void ) {}
329 void add( const fgLineSeg2D& seg ) { List.push_back(seg); }
330 void erase( void ) { List.clear();}
333 for_each( List.begin(), List.end(), DrawLineSeg2D());
340 vector< fgText > List;
342 fgTextList ( void ) { Font = 0; }
344 void setFont( fntRenderer *Renderer ) { Font = Renderer; }
345 void add( const fgText& String ) { List.push_back(String); }
346 void erase( void ) { List.clear(); }
351 inline void Text( fgTextList &List, float x, float y, char *s)
353 List.add( fgText( x, y, s) );
356 inline void Text( fgTextList &List, const fgText &me)
361 inline void Line( fgLineList &List, float x1, float y1, float x2, float y2)
363 List.add(fgLineSeg2D(x1,y1,x2,y2));
367 // Declare our externals
368 extern fgTextList HUD_TextList;
369 extern fgLineList HUD_LineList;
370 extern fgLineList HUD_StippleLineList;
373 class instr_item : public SGReferenced { // An Abstract Base Class (ABC)
375 static UINT instances; // More than 64K instruments? Nah!
376 static int brightness;
377 static glRGBTRIPLE color;
380 RECT scrn_pos; // Framing - affects scale dimensions
381 // and orientation. Vert vs Horz, etc.
382 FLTFNPTR load_value_fn;
383 float disp_factor; // Multiply by to get numbers shown on scale.
387 UINT scr_span; // Working values for draw;
396 FLTFNPTR data_source,
402 virtual ~instr_item ();
404 void set_data_source ( FLTFNPTR fn ) { load_value_fn = fn; }
405 int get_brightness ( void ) { return brightness;}
406 RECT get_location ( void ) { return scrn_pos; }
407 bool is_broken ( void ) { return broken; }
408 bool enabled ( void ) { return is_enabled;}
409 bool data_available ( void ) { return !!load_value_fn; }
410 float get_value ( void ) { return load_value_fn(); }
411 float data_scaling ( void ) { return disp_factor; }
412 UINT get_span ( void ) { return scr_span; }
413 POINT get_centroid ( void ) { return mid_span; }
414 UINT get_options ( void ) { return opts; }
415 int get_digits ( void ) { return digits; }
416 inline int get_x() const { return scrn_pos.left; }
417 inline int get_y() const { return scrn_pos.top; }
418 inline int get_width() const { return scrn_pos.right; }
419 inline int get_height() const { return scrn_pos.bottom; }
421 UINT huds_vert (UINT options) { return (options & HUDS_VERT); }
422 UINT huds_left (UINT options) { return (options & HUDS_LEFT); }
423 UINT huds_right (UINT options) { return (options & HUDS_RIGHT); }
424 UINT huds_both (UINT options) {
425 return ((options & HUDS_BOTH) == HUDS_BOTH);
427 UINT huds_noticks (UINT options) { return (options & HUDS_NOTICKS); }
428 UINT huds_notext (UINT options) { return (options & HUDS_NOTEXT); }
429 UINT huds_top (UINT options) { return (options & HUDS_TOP); }
430 UINT huds_bottom (UINT options) { return (options & HUDS_BOTTOM); }
432 virtual void display_enable( bool working ) { is_enabled = working;}
434 virtual void break_display ( bool bad );
435 virtual void SetBrightness( int illumination_level ); // fgHUDSetBright...
436 void SetPosition ( int x, int y, UINT width, UINT height );
437 UINT get_Handle( void );
438 virtual void draw( void ) = 0; // Required method in derived classes
440 void drawOneLine( float x1, float y1, float x2, float y2)
442 HUD_LineList.add(fgLineSeg2D(x1,y1,x2,y2));
444 void drawOneStippleLine( float x1, float y1, float x2, float y2)
446 HUD_StippleLineList.add(fgLineSeg2D(x1,y1,x2,y2));
448 void TextString( char *msg, float x, float y, bool digit )
450 HUD_TextList.add(fgText(x, y, msg,digit));
452 int getStringWidth ( char *str )
454 if ( HUDtext && str ) {
456 HUD_Font->getBBox ( str, HUD_TextSize, 0, &l, &r, NULL, NULL ) ;
457 return float_to_int( r - l );
466 typedef instr_item *HIptr;
470 void operator() (HIptr elem) const {
471 if ( elem->enabled())
477 extern int HUD_style;
479 // instr_item This class has no other purpose than to maintain
480 // a linked list of instrument and derived class
484 class instr_label : public instr_item {
491 string format_buffer;
495 SGPropertyNode_ptr lon_node;
496 SGPropertyNode_ptr lat_node;
499 instr_label(const SGPropertyNode *);
500 virtual void draw(void);
505 // fgRunway_instr This class is responsible for rendering the active runway
506 // in the hud (if visible).
507 class runway_instr : public instr_item {
509 void boundPoint(const sgdVec3& v, sgdVec3& m);
510 bool boundOutsidePoints(sgdVec3& v, sgdVec3& m);
511 bool drawLine(const sgdVec3& a1, const sgdVec3& a2,
512 const sgdVec3& p1, const sgdVec3& p2);
514 bool get_active_runway(FGRunway& rwy);
515 void get_rwy_points(sgdVec3 *points);
516 void setLineWidth(void);
518 sgdVec3 points3d[6], points2d[6];
519 double mm[16],pm[16], arrowScale, arrowRad, lnScale;
520 double scaleDist, default_pitch, default_heading;
523 FGViewer* cockpit_view;
524 unsigned short stippleOut, stippleCen;
525 bool drawIA, drawIAAlways;
530 runway_instr(const SGPropertyNode *);
532 virtual void draw( void );
533 void setArrowRotationRadius(double radius);
534 // Scales the runway indication arrow
535 void setArrowScale(double scale);
536 // Draws arrow when runway is not visible in HUD if draw=true
537 void setDrawArrow(bool draw);
538 // Always draws arrow if draw=true;
539 void setDrawArrowAlways(bool draw);
540 // Sets the maximum line scale
541 void setLineScale(double scale);
542 // Sets the distance where to start scaling the lines
543 void setScaleDist(double dist_nm);
544 // Sets the stipple pattern of the outline of the runway
545 void setStippleOutline(unsigned short stipple);
546 // Sets the stipple patter of the center line of the runway
547 void setStippleCenterline(unsigned short stipple);
552 // instr_scale This class is an abstract base class for both moving
553 // scale and moving needle (fixed scale) indicators. It
554 // does not draw itself, but is not instanciable.
557 class instr_scale : public instr_item {
559 float range_shown; // Width Units.
560 float Maximum_value; // ceiling.
561 float Minimum_value; // Representation floor.
562 float scale_factor; // factor => screen units/range values.
563 UINT Maj_div; // major division marker units
564 UINT Min_div; // minor division marker units
565 UINT Modulo; // Roll over point
566 int signif_digits; // digits to show to the right.
583 bool working = true);
585 virtual void draw ( void ) {}; // No-op here. Defined in derived classes.
586 UINT div_min ( void ) { return Min_div;}
587 UINT div_max ( void ) { return Maj_div;}
588 float min_val ( void ) { return Minimum_value;}
589 float max_val ( void ) { return Maximum_value;}
590 UINT modulo ( void ) { return Modulo; }
591 float factor ( void ) { return scale_factor;}
592 float range_to_show ( void ) { return range_shown;}
595 // hud_card This class displays the indicated quantity on
596 // a scale that moves past the pointer. It may be
597 // horizontal or vertical, read above(left) or below(right) of the base
600 class hud_card : public instr_scale {
604 float half_width_units;
605 bool draw_tick_bottom;
607 bool draw_tick_right;
609 bool draw_cap_bottom;
627 hud_card(const SGPropertyNode *);
628 // virtual void display_enable( bool setting ); // FIXME
629 virtual void draw(void);
630 void circles(float, float, float);
631 void fixed(float, float, float, float, float, float);
632 void zoomed_scale(int, int);
636 class gauge_instr : public instr_scale {
638 gauge_instr(const SGPropertyNode *);
639 virtual void draw( void ); // Required method in base class
644 // dual_instr_item This class was created to form the base class
645 // for both panel and HUD Turn Bank Indicators.
647 class dual_instr_item : public instr_item {
649 FLTFNPTR alt_data_source;
652 dual_instr_item ( int x,
656 FLTFNPTR chn1_source,
657 FLTFNPTR chn2_source,
661 float current_ch1( void ) { return (float)alt_data_source(); }
662 float current_ch2( void ) { return (float)get_value(); }
663 virtual void draw( void ) {}
667 class fgTBI_instr : public dual_instr_item {
676 fgTBI_instr(const SGPropertyNode *);
678 UINT bank_limit(void) { return BankLimit; }
679 UINT slew_limit(void) { return SlewLimit; }
681 virtual void draw(void);
685 class HudLadder : public dual_instr_item {
695 string hudladder_type;
698 bool velocity_vector;
702 bool climb_dive_marker;
703 bool glide_slope_marker;
706 bool waypoint_marker;
711 // The Ladder has it's own temporary display lists
714 fgLineList StippleLineList;
717 HudLadder(const SGPropertyNode *);
719 virtual void draw(void);
720 void drawZenith(float, float, float);
721 void drawNadir(float, float, float);
723 void Text(float x, float y, char *s)
725 TextList.add(fgText(x, y, s));
728 void Line(float x1, float y1, float x2, float y2)
730 LineList.add(fgLineSeg2D(x1, y1, x2, y2));
733 void StippleLine(float x1, float y1, float x2, float y2)
735 StippleLineList.add(fgLineSeg2D(x1, y1, x2, y2));
740 extern int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ );
741 extern int fgHUDInit2( fgAIRCRAFT * /* current_aircraft */ );
742 extern void fgUpdateHUD( osg::State* );
743 extern void fgUpdateHUD( osg::State*, GLfloat x_start, GLfloat y_start,
744 GLfloat x_end, GLfloat y_end );
749 class HUD_Properties : public SGPropertyChangeListener {
752 void valueChanged(SGPropertyNode *n);
753 void setColor() const;
754 bool isVisible() const { return _visible; }
755 bool isAntialiased() const { return _antialiased; }
756 bool isTransparent() const { return _transparent; }
757 float alphaClamp() const { return _cl; }
760 float clamp(float f) { return f < 0.0f ? 0.0f : f > 1.0f ? 1.0f : f; }
761 SGPropertyNode_ptr _current;
762 SGPropertyNode_ptr _visibility;
763 SGPropertyNode_ptr _antialiasing;
764 SGPropertyNode_ptr _transparency;
765 SGPropertyNode_ptr _red, _green, _blue, _alpha;
766 SGPropertyNode_ptr _alpha_clamp;
767 SGPropertyNode_ptr _brightness;
771 float _r, _g, _b, _a, _cl;