cc26bb7fe7
old routines from SRGP. Steve's plib/sg.h does a nice job of completely replacing this (and since plib is already around) and is a nice clean design so it just makes sense.
146 lines
3.7 KiB
C++
146 lines
3.7 KiB
C++
#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 <simgear/constants.h>
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#include <simgear/math/fg_random.h>
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#include <simgear/math/polar3d.hxx>
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#include <Aircraft/aircraft.hxx>
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#include <Scenery/scenery.hxx>
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#include <Time/fg_timer.hxx>
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#include "hud.hxx"
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//============ Top of fgTBI_instr class member definitions ==============
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fgTBI_instr ::
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fgTBI_instr( int x,
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int y,
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UINT width,
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UINT height,
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FLTFNPTR chn1_source,
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FLTFNPTR chn2_source,
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float maxBankAngle,
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float maxSlipAngle,
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UINT gap_width,
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bool working ) :
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dual_instr_item( x, y, width, height,
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chn1_source,
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chn2_source,
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working,
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HUDS_TOP),
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BankLimit ((int)(maxBankAngle)),
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SlewLimit ((int)(maxSlipAngle)),
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scr_hole (gap_width )
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{
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}
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fgTBI_instr :: ~fgTBI_instr() {}
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fgTBI_instr :: fgTBI_instr( const fgTBI_instr & image):
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dual_instr_item( (const dual_instr_item &) image),
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BankLimit( image.BankLimit),
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SlewLimit( image.SlewLimit),
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scr_hole ( image.scr_hole )
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{
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}
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fgTBI_instr & fgTBI_instr ::
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operator = (const fgTBI_instr & rhs )
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{
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if( !(this == &rhs)) {
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dual_instr_item::operator = (rhs);
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BankLimit = rhs.BankLimit;
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SlewLimit = rhs.SlewLimit;
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scr_hole = rhs.scr_hole;
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}
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return *this;
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}
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//
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// Draws a Turn Bank Indicator on the screen
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//
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void fgTBI_instr :: draw( void )
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{
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float bank_angle, sideslip_angle;
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float ss_const; // sideslip angle pixels per rad
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float cen_x, cen_y, bank, fspan, tee, hole;
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int span = get_span();
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float zero = 0.0;
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RECT My_box = get_location();
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POINT centroid = get_centroid();
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int tee_height = My_box.bottom;
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bank_angle = current_ch2(); // Roll limit +/- 30 degrees
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if( bank_angle < -FG_PI_2/3 ) {
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bank_angle = -FG_PI_2/3;
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} else if( bank_angle > FG_PI_2/3 ) {
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bank_angle = FG_PI_2/3;
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}
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sideslip_angle = current_ch1(); // Sideslip limit +/- 20 degrees
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if( sideslip_angle < -FG_PI/9 ) {
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sideslip_angle = -FG_PI/9;
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} else if( sideslip_angle > FG_PI/9 ) {
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sideslip_angle = FG_PI/9;
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}
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cen_x = centroid.x;
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cen_y = centroid.y;
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bank = bank_angle * RAD_TO_DEG;
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tee = -tee_height;
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fspan = span;
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hole = scr_hole;
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ss_const = 2 * sideslip_angle * fspan/(FG_2PI/9); // width represents 40 degrees
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// printf("side_slip: %f fspan: %f\n", sideslip_angle, fspan);
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// printf("ss_const: %f hole: %f\n", ss_const, hole);
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glPushMatrix();
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glTranslatef(cen_x, cen_y, zero);
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glRotatef(-bank, zero, zero, 1.0);
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glBegin(GL_LINES);
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if( !scr_hole )
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{
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glVertex2f( -fspan, zero );
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glVertex2f( fspan, zero );
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} else {
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glVertex2f( -fspan, zero );
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glVertex2f( -hole, zero );
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glVertex2f( hole, zero );
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glVertex2f( fspan, zero );
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}
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// draw teemarks
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glVertex2f( hole, zero );
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glVertex2f( hole, tee );
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glVertex2f( -hole, zero );
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glVertex2f( -hole, tee );
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glEnd();
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glBegin(GL_LINE_LOOP);
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glVertex2f( ss_const, -hole);
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glVertex2f( ss_const + hole, zero);
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glVertex2f( ss_const, hole);
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glVertex2f( ss_const - hole, zero);
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glEnd();
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glPopMatrix();
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}
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