src/Cockpit/hud_ladr.cxx

   1
   2 #include "hud.hxx"
   3
   4 #define DO_PANEL_HACK
   5
   6 //====================== Top of HudLadder Class =======================
   7 HudLadder ::   HudLadder(  int       x,
   8                int       y,
   9                UINT      width,
  10                UINT      height,
  11                UINT      mini,
  12                FLTFNPTR  ptch_source,
  13                FLTFNPTR  roll_source,
  14                float    span_units,
  15                float    major_div,
  16                float    minor_div,
  17                UINT      screen_hole,
  18                UINT      lbl_pos,
  19                bool      working) :
  20    dual_instr_item( x, y, width, height,
  21                     ptch_source,
  22                     roll_source,
  23                     working,
  24                     HUDS_RIGHT),
  25                     width_units    ( (int)(span_units)   ),
  26                     div_units      ( (int)(major_div < 0? -major_div: major_div) ),
  27                     minor_div      ( (int)(minor_div)    ),
  28                     label_pos      ( lbl_pos      ),
  29                     scr_hole       ( screen_hole  ),
  30                     vmax           ( span_units/2 ),
  31                     vmin           ( -vmax        )
  32    {
  33        if( !width_units ) {
  34            width_units = 45;
  35        }
  36        factor = (float)get_span() / (float) width_units;
  37        minimal = mini;
  38    }
  39
  40 HudLadder ::  ~HudLadder()
  41     {
  42     }
  43
  44     HudLadder ::
  45             HudLadder( const HudLadder & image ) :
  46             dual_instr_item( (dual_instr_item &) image),
  47             width_units    ( image.width_units   ),
  48             div_units      ( image.div_units     ),
  49             label_pos      ( image.label_pos     ),
  50             scr_hole       ( image.scr_hole      ),
  51             vmax           ( image.vmax ),
  52             vmin           ( image.vmin ),
  53             factor         ( image.factor        )
  54     {
  55     }
  56 HudLadder & HudLadder ::  operator = ( const HudLadder & rhs )
  57     {
  58         if( !(this == &rhs)) {
  59             (dual_instr_item &)(*this) = (dual_instr_item &)rhs;
  60             width_units  = rhs.width_units;
  61             div_units    = rhs.div_units;
  62             label_pos    = rhs.label_pos;
  63             scr_hole     = rhs.scr_hole;
  64             vmax         = rhs.vmax;
  65             vmin         = rhs.vmin;
  66             factor       = rhs.factor;
  67         }
  68         return *this;
  69     }
  70
  71 //
  72 //  Draws a climb ladder in the center of the HUD
  73 //
  74
  75 void HudLadder :: draw( void )
  76 {
  77     POINT  centroid    = get_centroid();
  78
  79     float   roll_value = current_ch2();
  80
  81     glPushMatrix();
  82     glTranslatef( centroid.x, centroid.y, 0);
  83         // Alex's panel patch
  84 //      glScalef( current_options.get_fov()/55.0, 1.0, 1.0 );
  85     glRotatef(roll_value * RAD_TO_DEG, 0.0, 0.0, 1.0);
  86
  87     // Draw the target spot.
  88 #define CENTER_DIAMOND_SIZE 6.0f
  89
  90     glBegin(GL_LINE_LOOP);
  91         glVertex2f( CENTER_DIAMOND_SIZE, 0.0);
  92         glVertex2f( 0.0, CENTER_DIAMOND_SIZE);
  93         glVertex2f( -CENTER_DIAMOND_SIZE, 0.0);
  94         glVertex2f( 0.0, -CENTER_DIAMOND_SIZE);
  95     glEnd();
  96
  97     if( minimal || ! div_units ) {
  98         glPopMatrix();
  99         return;
 100     }
 101
 102         float  x_ini;
 103         float  x_end;
 104         float  y;
 105
 106         float pitch_value = current_ch1() * RAD_TO_DEG;
 107         vmin              = pitch_value - (float)width_units * 0.5f;
 108         vmax              = pitch_value + (float)width_units * 0.5f;
 109
 110         RECT   box         = get_location();
 111
 112         float   half_span  = box.right * 0.5f ;
 113
 114         char     TextLadder[8] ;
 115         float    label_length ;
 116         float    label_height ;
 117         float    left ;
 118         float    right ;
 119         float    bot ;
 120         float    top ;
 121         float    text_offset = 4.0f ;
 122         float    zero_offset = 10.0f ;
 123
 124         fntFont *font      = HUDtext->getFont();
 125         float    pointsize = HUDtext->getPointSize();
 126         float    italic    = HUDtext->getSlant();
 127
 128         TextList.setFont( HUDtext );
 129         TextList.erase();
 130         LineList.erase();
 131         StippleLineList.erase();
 132
 133         int last = FloatToInt(vmax)+1;
 134         int i    = FloatToInt(vmin);
 135
 136         if( !scr_hole ) {
 137                 x_end =  half_span;
 138                 for( ; i<last ; i++ ) {
 139
 140                         y =  (((float)(i - pitch_value) * factor) + .5f);
 141                         if( !(i % div_units ))    {        //  At integral multiple of div
 142
 143                                 sprintf( TextLadder, "%d", i );
 144                                 font->getBBox ( TextLadder, pointsize, italic,
 145                                                                 &left, &right, &bot, &top ) ;
 146
 147                                 label_length  = right - left;
 148                                 label_length += text_offset;
 149                                 label_height  = (top - bot) * 0.5f;
 150
 151                                 x_ini = -half_span;
 152
 153                                 if( i >= 0 ) {
 154                                         // Make zero point wider on left
 155                                         if( i == 0 )
 156                                                 x_ini -= zero_offset;
 157                                         // Zero or above draw solid lines
 158                                         Line(x_ini, y, x_end, y);
 159                                 } else {
 160                                         // Below zero draw dashed lines.
 161                                         StippleLine(x_ini, y, x_end, y);
 162                                 }
 163
 164                                 // Calculate the position of the left text and write it.
 165                                 Text( x_ini-label_length, y-label_height, TextLadder );
 166                                 Text( x_end+text_offset,  y-label_height, TextLadder );
 167                         }
 168                 }
 169         } else  { // scr_hole != 0
 170                 // Draw ladder with space in the middle of the lines
 171                 float  x_ini2;
 172                 float  x_end2;
 173                 float hole = (float)((scr_hole)*0.5f);
 174
 175                 x_end  = -half_span + hole;
 176                 x_ini2 =  half_span - hole;
 177
 178                 for( ; i<last ; i++ )      {
 179
 180                         y = (((float)(i - pitch_value) * factor) + .5);
 181                         if( !(i % div_units ))    {        //  At integral multiple of div
 182
 183                                 sprintf( TextLadder, "%d", i );
 184                                 font->getBBox ( TextLadder, pointsize, italic,
 185                                                                 &left, &right, &bot, &top ) ;
 186                                 label_length  = right - left;
 187                                 label_length += text_offset;
 188                                 label_height  = (top - bot) * 0.5f;
 189
 190                                 // Start by calculating the points and drawing the
 191                                 // left side lines.
 192                                 x_ini  = -half_span;
 193                                 x_end2 =  half_span;
 194
 195                                 if( i >= 0 ) {
 196                                         // Make zero point wider on left
 197                                         if( i == 0 ) {
 198                                                 x_ini -= zero_offset;
 199                                                 x_end2 += zero_offset;
 200                                         }
 201                                         // Zero or above draw solid lines
 202                                         Line(x_ini, y, x_end, y);
 203                                         Line(x_ini2, y, x_end2, y);
 204                                 } else {
 205                                         // Below zero draw dashed lines.
 206                                         StippleLine(x_ini,  y, x_end,  y);
 207                                         StippleLine(x_ini2, y, x_end2, y);
 208                                 }
 209                                 // Calculate the location of the left side label using
 210                                 Text( x_ini-label_length, y-label_height, TextLadder );
 211                                 // Calculate the location and draw the right side label
 212                                 Text( x_end2+text_offset, y-label_height, TextLadder );
 213                         }
 214                 }
 215         }
 216         TextList.draw();
 217
 218         LineList.draw();
 219
 220         glEnable(GL_LINE_STIPPLE);
 221 #ifdef DO_PANEL_HACK
 222         glLineStipple( 1, current_options.get_panel_status() ? 0x0F0F : 0x00FF );
 223 #else
 224         glLineStipple( 1, 0x00FF );
 225 #endif
 226
 227         StippleLineList.draw( );
 228         glDisable(GL_LINE_STIPPLE);
 229
 230 //   } // if(div_units)
 231     glPopMatrix();
 232 }
 233