302 lines
11 KiB
C++
302 lines
11 KiB
C++
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#ifdef HAVE_WINDOWS_H
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# include <windows.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <Aircraft/aircraft.h>
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#include <Debug/fg_debug.h>
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#include <Include/fg_constants.h>
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#include <Math/fg_random.h>
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#include <Math/mat3.h>
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#include <Math/polar3d.h>
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#include <Scenery/scenery.hxx>
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#include <Time/fg_timer.hxx>
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#include <Weather/weather.h>
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#include "hud.hxx"
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//====================== Top of HudLadder Class =======================
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HudLadder ::
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HudLadder( int x,
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int y,
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UINT width,
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UINT height,
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DBLFNPTR ptch_source,
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DBLFNPTR roll_source,
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double span_units,
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double major_div,
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double minor_div,
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UINT screen_hole,
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UINT lbl_pos,
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bool working) :
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dual_instr_item( x, y, width, height,
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ptch_source,
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roll_source,
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working,
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HUDS_RIGHT),
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width_units ( span_units ),
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div_units ( major_div < 0? -major_div: major_div ),
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minor_div ( minor_div ),
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label_pos ( lbl_pos ),
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scr_hole ( screen_hole ),
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vmax ( span_units/2 ),
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vmin ( -vmax )
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{
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if( !width_units ) {
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width_units = 45;
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}
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factor = (double)get_span() / (double) width_units;
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}
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HudLadder ::
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~HudLadder()
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{
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}
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HudLadder ::
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HudLadder( const HudLadder & image ) :
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dual_instr_item( (dual_instr_item &) image),
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width_units ( image.width_units ),
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div_units ( image.div_units ),
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label_pos ( image.label_pos ),
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scr_hole ( image.scr_hole ),
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vmax ( image.vmax ),
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vmin ( image.vmin ),
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factor ( image.factor )
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{
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}
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HudLadder & HudLadder ::
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operator = ( const HudLadder & rhs )
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{
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if( !(this == &rhs)) {
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(dual_instr_item &)(*this) = (dual_instr_item &)rhs;
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width_units = rhs.width_units;
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div_units = rhs.div_units;
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label_pos = rhs.label_pos;
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scr_hole = rhs.scr_hole;
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vmax = rhs.vmax;
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vmin = rhs.vmin;
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factor = rhs.factor;
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}
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return *this;
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}
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//
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// Draws a climb ladder in the center of the HUD
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//
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void HudLadder :: draw( void )
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{
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double roll_value;
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double pitch_value;
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int marker_y;
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int x_ini;
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int x_end;
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int y_ini;
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int y_end;
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int new_x_ini;
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int new_x_end;
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int new_y_ini;
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int new_y_end;
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int i;
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POINT centroid = get_centroid();
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RECT box = get_location();
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int scr_min = box.top;
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int half_span = box.right >> 1;
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char TextLadder[80];
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int condition;
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int label_length;
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roll_value = current_ch2();
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GLfloat sinRoll = sin( roll_value );
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GLfloat cosRoll = cos( roll_value );
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pitch_value = current_ch1() * RAD_TO_DEG;
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vmin = pitch_value - (double)width_units/2.0;
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vmax = pitch_value + (double)width_units/2.0;
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// Box the target.
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drawOneLine( centroid.x - 5, centroid.y, centroid.x, centroid.y + 5);
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drawOneLine( centroid.x, centroid.y + 5, centroid.x + 5, centroid.y);
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drawOneLine( centroid.x + 5, centroid.y, centroid.x, centroid.y - 5);
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drawOneLine( centroid.x, centroid.y - 5, centroid.x - 5, centroid.y);
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for( i=(int)vmin; i<=(int)vmax; i++ ) { // Through integer pitch values...
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condition = 1;
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if( condition ) {
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marker_y = centroid.y + (int)(((double)(i - pitch_value) * factor) + .5);
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if( div_units ) {
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if( !(i % div_units )) { // At integral multiple of div
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sprintf( TextLadder, "%d", i );
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label_length = strlen( TextLadder );
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if( scr_hole == 0 ) {
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if( i ) {
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x_ini = centroid.x - half_span;
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}
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else { // Make zero point wider on left
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x_ini = centroid.x - half_span - 10;
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}
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y_ini = marker_y;
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x_end = centroid.x + half_span;
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y_end = marker_y;
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new_x_ini = centroid.x + (int)(
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(x_ini - centroid.x) * cosRoll -
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(y_ini - centroid.y) * sinRoll);
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new_y_ini = centroid.y + (int)( \
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(x_ini - centroid.x) * sinRoll + \
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(y_ini - centroid.y) * cosRoll);
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new_x_end = centroid.x + (int)( \
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(x_end - centroid.x) * cosRoll - \
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(y_end - centroid.y) * sinRoll);
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new_y_end = centroid.y + (int)( \
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(x_end - centroid.x) * sinRoll + \
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(y_end - centroid.y) * cosRoll);
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if( i >= 0 ) { // Above zero draw solid lines
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drawOneLine( new_x_ini, new_y_ini, new_x_end, new_y_end );
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}
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else { // Below zero draw dashed lines.
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glEnable(GL_LINE_STIPPLE);
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glLineStipple( 1, 0x00FF );
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drawOneLine( new_x_ini, new_y_ini, new_x_end, new_y_end );
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glDisable(GL_LINE_STIPPLE);
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}
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// Calculate the position of the left text and write it.
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new_x_ini = centroid.x + (int)(
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(x_ini - 8 * label_length- 4 - centroid.x) * cosRoll -
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(y_ini - 4 ) * sinRoll);
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new_y_ini = centroid.y + (int)(
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(x_ini - 8 * label_length- 4 - centroid.x) * sinRoll +
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(y_ini - 4 - centroid.y) * cosRoll);
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strokeString( new_x_ini , new_y_ini ,
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TextLadder, GLUT_STROKE_ROMAN,
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roll_value );
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// Calculate the position of the right text and write it.
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new_x_end = centroid.x + (int)( \
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(x_end + 24 - 8 * label_length - centroid.x) * cosRoll - \
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(y_end - 4 - centroid.y) * sinRoll);
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new_y_end = centroid.y + (int)( \
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(x_end + 24 - 8 * label_length - centroid.x) * sinRoll + \
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(y_end - 4 - centroid.y) * cosRoll);
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strokeString( new_x_end, new_y_end,
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TextLadder, GLUT_STROKE_ROMAN,
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roll_value );
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}
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else { // Draw ladder with space in the middle of the lines
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// Start by calculating the points and drawing the
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// left side lines.
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if( i != 0 ) {
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x_ini = centroid.x - half_span;
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}
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else {
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x_ini = centroid.x - half_span - 10;
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}
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y_ini = marker_y;
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x_end = centroid.x - half_span + scr_hole/2;
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y_end = marker_y;
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new_x_end = centroid.x+ (int)( \
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(x_end - centroid.x) * cosRoll -\
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(y_end - centroid.y) * sinRoll);
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new_y_end = centroid.y+ (int)( \
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(x_end - centroid.x) * sinRoll +\
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(y_end - centroid.y) * cosRoll);
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new_x_ini = centroid.x + (int)( \
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(x_ini - centroid.x) * cosRoll -\
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(y_ini - centroid.y) * sinRoll);
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new_y_ini = centroid.y + (int)( \
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(x_ini - centroid.x) * sinRoll +\
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(y_ini - centroid.y) * cosRoll);
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if( i >= 0 )
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{
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drawOneLine( new_x_ini, new_y_ini, new_x_end, new_y_end );
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}
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else {
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glEnable(GL_LINE_STIPPLE);
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glLineStipple( 1, 0x00FF );
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drawOneLine( new_x_ini, new_y_ini, new_x_end, new_y_end );
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glDisable(GL_LINE_STIPPLE);
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}
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// Now calculate the location of the left side label using
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// the previously calculated start of the left side line.
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x_ini = x_ini - (label_length + 32 + centroid.x);
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if( i < 0) {
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x_ini -= 8;
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}
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else {
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if( i == 0 ) {
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x_ini += 20;
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}
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}
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y_ini = y_ini - ( 4 + centroid.y);
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new_x_ini = centroid.x + (int)(x_ini * cosRoll - y_ini * sinRoll);
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new_y_ini = centroid.y + (int)(x_ini * sinRoll + y_ini * cosRoll);
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strokeString( new_x_ini , new_y_ini ,
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TextLadder, GLUT_STROKE_MONO_ROMAN,
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roll_value );
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// Now calculate and draw the right side line location
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x_ini = centroid.x + half_span - scr_hole/2;
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y_ini = marker_y;
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if( i != 0 ) {
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x_end = centroid.x + half_span;
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}
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else {
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x_end = centroid.x + half_span + 10;
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}
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y_end = marker_y;
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new_x_ini = centroid.x + (int)( \
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(x_ini-centroid.x)*cosRoll -\
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(y_ini-centroid.y)*sinRoll);
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new_y_ini = centroid.y + (int)( \
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(x_ini-centroid.x)*sinRoll +\
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(y_ini-centroid.y)*cosRoll);
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new_x_end = centroid.x + (int)( \
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(x_end-centroid.x)*cosRoll -\
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(y_end-centroid.y)*sinRoll);
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new_y_end = centroid.y + (int)( \
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(x_end-centroid.x)*sinRoll +\
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(y_end-centroid.y)*cosRoll);
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if( i >= 0 )
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{
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drawOneLine( new_x_ini, new_y_ini, new_x_end, new_y_end );
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}
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else
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{
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glEnable(GL_LINE_STIPPLE);
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glLineStipple( 1, 0x00FF );
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drawOneLine( new_x_ini, new_y_ini, new_x_end, new_y_end );
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glDisable(GL_LINE_STIPPLE);
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}
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// Calculate the location and draw the right side label
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// using the end of the line as previously calculated.
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x_end -= centroid.x + label_length - 24;
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if( i < 0 ) {
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x_end -= 8;
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}
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y_end = marker_y - ( 4 + centroid.y);
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new_x_end = centroid.x + (int)( (GLfloat)x_end * cosRoll -
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(GLfloat)y_end * sinRoll);
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new_y_end = centroid.y + (int)( (GLfloat)x_end * sinRoll +
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(GLfloat)y_end * cosRoll);
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strokeString( new_x_end, new_y_end,
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TextLadder, GLUT_STROKE_MONO_ROMAN,
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roll_value );
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}
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}
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}
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}
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}
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}
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