Exemple #1
0
void MapWindow::DrawVisualGlide(LKSurface& Surface, const DiagrammStruct& sDia) {

    const RECT& rci = sDia.rc;

    unsigned short numboxrows = 1;

#if BUGSTOP
    LKASSERT(Current_Multimap_SizeY < SIZE4);
#endif
    switch (Current_Multimap_SizeY) {
        case SIZE0:
        case SIZE1:
            numboxrows = 3;
            break;
        case SIZE2:
            numboxrows = 2;
            break;
        case SIZE3:
            numboxrows = 1;
            break;
        case SIZE4:
            return;
        default:
            LKASSERT(0);
            break;
    }

    if (!ScreenLandscape) {
        numboxrows++;
        if (numboxrows > 3) numboxrows = 3;
    }

    TCHAR tmpT[30];

    line1Font = LK8VisualTopFont;
    line2Font = LK8VisualBotFont;
    SIZE textSizeTop, textSizeBot;
    Surface.SelectObject(line1Font);
    _stprintf(tmpT, _T("MMMM"));
    Surface.GetTextSize(tmpT, &textSizeTop);
    Surface.SelectObject(line2Font);
    _stprintf(tmpT, _T("55.5%s 79%s%s "), Units::GetDistanceName(), MsgToken(2179), MsgToken(2183));
    Surface.GetTextSize(tmpT, &textSizeBot);

    // we can cut the waypoint name, but not the value data, so we use the second row of data
    // to size the box for everything.
    maxtSizeX = textSizeBot.cx;

    int a = (rci.right-rci.left) / (textSizeBot.cx+BOXINTERVAL);
    int b = (rci.right-rci.left) - a * (textSizeBot.cx)-(BOXINTERVAL * (a + 1));

    boxSizeX = textSizeBot.cx + (b / (a + 1));
    boxSizeY = textSizeTop.cy + 1; // single line (wp name) + distance from bottombar

    if (numboxrows > 1) {
        boxSizeY += (textSizeBot.cy * (numboxrows - 1)) - NIBLSCALE(2);
        if (numboxrows > 2) boxSizeY -= NIBLSCALE(1);
    }

#if DEBUG_SCR
    StartupStore(_T("boxX=%d boxY=%d  \n"), boxSizeX, boxSizeY);
#endif

#if DEBUG_SCR
    StartupStore(_T("VG AREA LTRB: %d,%d %d,%d\n"), rci.left, rci.top, rci.right, rci.bottom);
#endif

    const auto oldBrush = Surface.SelectObject(LKBrush_White);
    const auto oldPen = Surface.SelectObject(LK_BLACK_PEN);

    BrushReference brush_back;
    if (!INVERTCOLORS) {
        brush_back = LKBrush_Black;
    } else {
        brush_back = LKBrush_Nlight;
    }

    Surface.FillRect(&rci, brush_back);

    POINT center, p1, p2;
    center.y = rci.top + (rci.bottom - rci.top) / 2;
    center.x = rci.left + (rci.right - rci.left) / 2;

    // numSlotX is the number items we can print horizontally.
    unsigned short numSlotX = (rci.right - rci.left) / (boxSizeX + BOXINTERVAL);
    if (numSlotX > MAXBSLOT) numSlotX = MAXBSLOT;
#if BUGSTOP
    LKASSERT(numSlotX > 0);
#endif
    if (numSlotX == 0) return;

    unsigned short boxInterval = ((rci.right - rci.left)-(boxSizeX * numSlotX)) / (numSlotX + 1);
    unsigned short oddoffset = ( (rci.right-rci.left) - (boxSizeX * numSlotX) - boxInterval * (numSlotX + 1)) / 2;

    /*
    #if BUGSTOP
    // not really harmful
    LKASSERT(oddoffset<=boxInterval);
    #endif
     */

#if DEBUG_SCR
    StartupStore(_T("numSlotX=%d ScreenSizeX=%d boxSizeX=%d interval=%d offset=%d\n"), numSlotX, ScreenSizeX, boxSizeX, boxInterval, oddoffset);
#endif

    unsigned int t;

    // The horizontal grid
    unsigned int slotCenterX[MAXBSLOT + 1];
    for (t = 0; t < numSlotX; t++) {
        slotCenterX[t] = (t * boxSizeX) + boxInterval * (t + 1)+(boxSizeX / 2) + oddoffset+rci.left;
#if DEBUG_SCR
        StartupStore(_T("slotCenterX[%d]=%d\n"), t, slotCenterX[t]);
#endif
    }

    // Vertical coordinates of each up/down subwindow, excluding center line
    int upYtop = rci.top;
#if MIDCENTER
    int upYbottom = center.y + (boxSizeY / 2);
    int downYtop = center.y - (boxSizeY / 2);
#else
    int upYbottom = center.y - CENTERYSPACE;
    int downYtop = center.y + CENTERYSPACE;
#endif
    int upSizeY = upYbottom - upYtop - (boxSizeY);
    ;
    int downYbottom = rci.bottom;
    int downSizeY = downYbottom - downYtop - (boxSizeY);
    ;

#if 0
    // Reassign dynamically the vertical scale for each subwindow size
    double vscale = 1000 * (100 - Current_Multimap_SizeY) / 100;
#else
    // Set the vertical range
    double vscale;
    if (Units::GetUserAltitudeUnit() == unFeet)
        vscale = (1000 / TOFEET);
    else
        vscale = 300.0;
#endif



    Surface.SetBackgroundTransparent();

    RECT trc = rci;

    // Top part of visual rect, target is over us=unreachable=red
    trc.top = rci.top;
    trc.bottom = center.y - 1;
    #ifndef DITHER
    RenderSky(Surface, trc, RGB_WHITE, LKColor(150, 255, 150), GC_NO_COLOR_STEPS / 2);
    #else
    RenderSky(Surface, trc, RGB_WHITE, RGB_WHITE, GC_NO_COLOR_STEPS / 2);
    #endif
    // Bottom part, target is below us=reachable=green
    trc.top = center.y + 1;
    trc.bottom = rci.bottom;
    #ifndef DITHER
    RenderSky(Surface, trc, LKColor(255, 150, 150), RGB_WHITE, GC_NO_COLOR_STEPS / 2);
    #else
    RenderSky(Surface, trc, RGB_WHITE, RGB_WHITE,GC_NO_COLOR_STEPS / 2);
    #endif

    // Draw center line
    p1.x = rci.left + 1;
    p1.y = center.y;
    p2.x = rci.right - 1;
    p2.y = center.y;
    Surface.SelectObject(LKPen_Black_N1);
    Surface.DrawSolidLine(p1, p2, rci);

#if DEBUG_SCR
    StartupStore(_T("... Center line: Y=%d\n"), center.y);
#endif

    Surface.SelectObject(line1Font);
    Surface.SelectObject(LKPen_Black_N0);

    ResetVisualGlideGlobals();

    short res = GetVisualGlidePoints(numSlotX);

    if (res == INVALID_VALUE) {
#if DEBUG_DVG
        StartupStore(_T("...... GVGP says not ready, wait..\n"));
#endif
        return;
    }
    if (res == 0) {
#if DEBUG_DVG
        StartupStore(_T("...... GVGP says no data available!\n"));
#endif
        return;
    }

    // Print them all!
    int offset = (boxSizeY / 2) + CENTERYSPACE;

    LKBrush bcolor;
    LKColor rgbcolor, textcolor;
    int wp;

    unsigned short zeroslot = 0;
    double minbrgdiff = 999.0;
    double minabrgdiff = 999.0; // absolute never negative
    for (unsigned short n = 0; n < numSlotX; n++) {
        wp = slotWpIndex[n];
        if (!ValidWayPoint(wp)) {
            // empty slot nothing to print
            continue;
        }
        double brgdiff = WayPointCalc[wp].Bearing - DrawInfo.TrackBearing;
        // this check is worthless
        if (brgdiff < -180.0) {
            brgdiff += 360.0;
        } else {
            if (brgdiff > 180.0) brgdiff -= 360.0;
        }
        double abrgdiff = brgdiff;
        if (abrgdiff < 0) abrgdiff *= -1;

        if (abrgdiff < minabrgdiff) {
            zeroslot = n;
            minabrgdiff = abrgdiff;
            minbrgdiff = brgdiff;
        }
    }

    // Draw vertical line
#define DEGRANGE 10	// degrees left and right to perfect target
    if (minabrgdiff < 1) {
        p1.x = slotCenterX[zeroslot];
    } else {
        // set fullscale range
        if (minabrgdiff > DEGRANGE) {
            minabrgdiff = DEGRANGE;
            if (minbrgdiff < 0)
                minbrgdiff = -1 * DEGRANGE;
            else
                minbrgdiff = DEGRANGE;
        }
        // we shift of course in the opposite direction
        p1.x = slotCenterX[zeroslot]-(int) ((boxSizeX / (DEGRANGE * 2)) * minbrgdiff);
    }
    p2.x = p1.x;

    p1.y = rci.top + 1;
    p2.y = rci.bottom - 1;
    Surface.SelectObject(LKPen_Black_N1);
    Surface.DrawSolidLine(p1, p2, rci);



    for (unsigned short n = 0; n < numSlotX; n++) {

        wp = slotWpIndex[n];
        if (!ValidWayPoint(wp)) {
            // empty slot nothing to print
            continue;
        }
#if DEBUG_DVG
        StartupStore(_T("... DVG PRINT [%d]=%d <%s>\n"), n, wp, WayPointList[wp].Name);
#endif

        Sideview_VGWpt[n] = wp;

        double altdiff = WayPointCalc[wp].AltArriv[AltArrivMode];
        int ty;
#if DEBUG_SCR
        StartupStore(_T("... wp=<%s>\n"), WayPointList[wp].Name);
#endif

        // Since terrain can be approximated due to low precision maps, or waypoint position or altitude error,
        // we have a common problem: we get an obstacle to get to the waypoint because it is
        // positioned "BELOW" the terrain itself. We try to reduce this problem here.
#define SAFETERRAIN	50

        // Positive arrival altitude for the waypoint, upper window
        if (altdiff >= 0) {
            if (altdiff == 0)altdiff = 1;
            double d = vscale / altdiff;
            if (d == 0) d = 1;
            ty = upYbottom - (int) ((double) upSizeY / d)-(boxSizeY / 2);
#if DEBUG_SCR
            StartupStore(_T("... upYbottom=%d upSizeY=%d / (vscale=%f/altdiff=%f = %f) =- %d  ty=%d  offset=%d\n"),
                    upYbottom, upSizeY, vscale, altdiff, d, (int) ((double) upSizeY / d), ty, offset);
#endif
            if ((ty - offset) < upYtop) ty = upYtop + offset;
            if ((ty + offset) > upYbottom) ty = upYbottom - offset;
#if DEBUG_SCR
            StartupStore(_T("... upYtop=%d upYbottom=%d final ty=%d\n"), upYtop, upYbottom, ty);
#endif


            //
            // This is too confusing. We want simple colors, not shaded
            // rgbcolor = MixColors( LKColor(50,255,50), LKColor(230,255,230),  altdiff/(vscale-50));
            //

            if (altdiff <= SAFETERRAIN) {
                rgbcolor = RGB_LIGHTYELLOW;
            } else {
                if (!CheckLandableReachableTerrainNew(&DrawInfo, &DerivedDrawInfo,
                        WayPointCalc[wp].Distance, WayPointCalc[wp].Bearing)) {
                    rgbcolor = RGB_LIGHTRED;
                } else {
#ifdef DITHER
                    rgbcolor = RGB_WHITE;
#else
                    rgbcolor = RGB_LIGHTGREEN;
#endif
                }
            }
            bcolor.Create(rgbcolor);

        } else {
            double d = vscale / altdiff;
            if (d == 0) d = -1;
            ty = downYtop - (int) ((double) downSizeY / d)+(boxSizeY / 2); // - because the left part is negative, we are really adding.
            if ((ty - offset) < downYtop) ty = downYtop + offset;
            if ((ty + offset) > downYbottom) ty = downYbottom - offset;

#ifdef DITHER
            rgbcolor = RGB_WHITE; // negative part, no need to render dark
#else
            rgbcolor = RGB_LIGHTRED;
#endif
            bcolor.Create(rgbcolor);
        }

        TCHAR line2[40], line3[40];
        TCHAR value[40], unit[30];
        TCHAR name[NAME_SIZE + 1];
        double ar = (WayPointCalc[wp].AltArriv[AltArrivMode] * ALTITUDEMODIFY);
        _tcscpy(name, WayPointList[wp].Name);
        CharUpper(name);

        if (IsSafetyAltitudeInUse(wp))
            textcolor = RGB_DARKBLUE;
        else
            textcolor = RGB_BLACK;

        switch (numboxrows) {
            case 0:
#if BUGSTOP
                LKASSERT(0);
#endif
                return;

            case 1:
                // 1 line: waypoint name
                VGTextInBox(Surface, n, 1, name, NULL, NULL, slotCenterX[n], ty, textcolor, bcolor);
                break;

            case 2:
                // 2 lines: waypoint name + altdiff
                LKFormatAltDiff(wp, false, value, unit);
                // Should we print also the GR?
                if ((ar >= -9999 && ar <= 9999) && (WayPointCalc[wp].GR < MAXEFFICIENCYSHOW)) {
                    if (ar >= -999 && ar <= 999)
                        _stprintf(line2, _T("%s   "), value);
                    else
                        _stprintf(line2, _T("%s  "), value);
                    LKFormatGR(wp, false, value, unit);
                    _tcscat(line2, value);
                } else {
                    _stprintf(line2, _T("%s   ---"), value);
                }

                VGTextInBox(Surface, n, 2, name, line2, NULL, slotCenterX[n], ty, textcolor, bcolor);
                break;

            case 3:
                // 3 lines: waypoint name + dist + altdiff
                LKFormatDist(wp, false, value, unit);
                _stprintf(line2, _T("%s%s"), value, unit);

                LKFormatBrgDiff(wp, false, value, unit);
                _stprintf(tmpT, _T(" %s%s"), value, unit);
                _tcscat(line2, tmpT);

                LKFormatAltDiff(wp, false, value, unit);
                // Should we print also the GR?
                if ((ar >= -9999 && ar <= 9999) && (WayPointCalc[wp].GR < MAXEFFICIENCYSHOW)) {
                    if (ar >= -999 && ar <= 999)
                        _stprintf(line3, _T("%s   "), value);
                    else
                        _stprintf(line3, _T("%s  "), value);
                    LKFormatGR(wp, false, value, unit);
                    _tcscat(line3, value);
                } else {
                    _stprintf(line3, _T("%s   ---"), value);
                }

                VGTextInBox(Surface, n, 3, name, line2, line3, slotCenterX[n], ty, textcolor, bcolor);
                break;
            default:
#if BUGSTOP
                LKASSERT(0);
#endif
                return;
        }

    } // for numSlotX



    // Cleanup and return
    Surface.SelectObject(oldBrush);
    Surface.SelectObject(oldPen);
    return;
}
int Statistics::RenderFAISector (LKSurface& Surface, const RECT& rc , double lat1, double lon1, double lat2, double lon2, double lat_c, double lon_c , int iOpposite , const LKColor& fillcolor)
{
float fFAI_Percentage = FAI_NORMAL_PERCENTAGE;
double fDist_a, fDist_b, fDist_c, fAngle;
int i;

unsigned int iPolyPtr=0;
double lat_d,lon_d;
double alpha, fDistTri, cos_alpha=0;
POINT apSectorPolygon[MAX_FAI_SECTOR_PTS+1];
DistanceBearing(lat1, lon1, lat2, lon2, &fDist_c, &fAngle);

if(fabs(fDist_c) < 1000.0)  /* distance too short for a FAI sector */
	return -1;

double x1=0,y1=0;
double fDistMax = fDist_c/FAI_NORMAL_PERCENTAGE;
double fDistMin = fDist_c/(1.0-2.0*FAI28_45Threshold);
double fDelta_Dist = 2.0* fDist_c*fFAI_Percentage / (double)(FAI_SECTOR_STEPS-1);
double fA, fB;
double fMinLeg, fMaxLeg,fDiff=0;

double dir = -1.0;
BOOL bBigFAISector = false;

if(fDistMax > FAI28_45Threshold)
{
  bBigFAISector = true;
  fDistMax = fDist_c/FAI_BIG_PERCENTAGE;
}

if(fDistMin < FAI28_45Threshold)
{
  fDistMin = fDist_c/(1.0-2.0*FAI_NORMAL_PERCENTAGE);
}


  if (iOpposite >0)
  {
	dir = 1.0;
  }

//#define  HELP_LINES
#ifdef HELP_LINES
  int x2,y2, style;
  FindLatitudeLongitude(lat1, lon1, AngleLimit360 (fAngle), fDist_c/2, &lat_d, &lon_d);
  x1 = (lon_d - lon_c)*fastcosine(lat_d);
  y1 = (lat_d - lat_c);
  FindLatitudeLongitude(lat_d, lon_d, AngleLimit360 (fAngle-90.0), fDist_c, &lat_d, &lon_d);
  x2 = (lon_d - lon_c)*fastcosine(lat_d);
  y2 = (lat_d - lat_c);
  DrawLine(hdc, rc, x1, y1, x2, y2, style);
#endif

  /********************************************************************
   * right below threshold 1
   ********************************************************************/
  fA = 	fDistMin;
  if(fDistMax > FAI28_45Threshold)
    fB = FAI28_45Threshold;
  else
	fB = fDistMax ;


  if(fA<fB)
  {
	fDelta_Dist =(fB-fA)/ (double)(FAI_SECTOR_STEPS-1);
	fDistTri = fA;
    for(i =0 ;i < FAI_SECTOR_STEPS; i++)
    {
	  fDist_a = FAI_NORMAL_PERCENTAGE * fDistTri;
	  fDist_b = fDistTri - fDist_a - fDist_c;

	  LKASSERT(fDist_c*fDist_b!=0);
	  cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
	  alpha = acos(cos_alpha)*180/PI * dir;
	  FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);

	  x1 = (lon_d - lon_c)*fastcosine(lat_d);
	  y1 = (lat_d - lat_c);
	  LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
	  apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
	  apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);

      fDistTri += fDelta_Dist;
    }
  }

  /********************************************************************
   * right  threshold extender 2
   ********************************************************************/
  if(bBigFAISector && (fDistMin < FAI28_45Threshold))
  {
	fMaxLeg = FAI28_45Threshold*FAI_BIG_MAX_PERCENTAGE;
	fMinLeg = FAI28_45Threshold*FAI_BIG_PERCENTAGE;
	fA = FAI28_45Threshold*FAI_NORMAL_PERCENTAGE;
	fB = FAI28_45Threshold-fMaxLeg-fDist_c;

	if(fB < fMinLeg)
		fB = fMinLeg;

    fDist_a = fA;
    fDelta_Dist =  (fB-fA) / (double)(FAI_SECTOR_STEPS/2-1);
    for(i =0 ;i < FAI_SECTOR_STEPS/2; i++)
    {
	  fDist_b = FAI28_45Threshold - fDist_a - fDist_c;
  	  LKASSERT(fDist_c*fDist_b!=0);
	  cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
	  alpha = acos(cos_alpha)*180/PI * dir;
	  FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);
      x1 = (lon_d - lon_c)*fastcosine(lat_d);
      y1 = (lat_d - lat_c);
      LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
      apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
      apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);
	  fDist_a += fDelta_Dist;
    }
  }
  /********************************************************************
   * right  above threshold  3
   ********************************************************************/
  if(bBigFAISector)
  {
    fA = 	FAI28_45Threshold;
    if(fDistMin > fA)
	  fA= fDistMin;
    fB =fDist_c/(1- FAI_BIG_PERCENTAGE-FAI_BIG_MAX_PERCENTAGE);

    if(fA < fB)
    {
      fDelta_Dist =(fB-fA)/ (double)(FAI_SECTOR_STEPS-1);
      fDistTri = fA;
      for(i =0 ;i < FAI_SECTOR_STEPS; i++)
      {
  	    fMaxLeg = fDistTri*FAI_BIG_MAX_PERCENTAGE;
	    fMinLeg = fDistTri*FAI_BIG_PERCENTAGE;
	    fDist_a = fDistTri-fMinLeg-fDist_c;;
	    fDist_b = fMinLeg;

	    if(fDist_a > fMaxLeg)
	    {
	      fDiff =  fDist_a - fMaxLeg;
	      fDist_b+=fDiff;
	      fDist_a-=fDiff;
	    }

	    LKASSERT(fDist_c*fDist_b!=0);
	    cos_alpha = ( fDist_a*fDist_a + fDist_c*fDist_c - fDist_b*fDist_b )/(2.0*fDist_c*fDist_a);
	    alpha = acos(cos_alpha)*180/PI * dir;
	    FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_a, &lat_d, &lon_d);
        x1 = (lon_d - lon_c)*fastcosine(lat_d);
        y1 = (lat_d - lat_c);
        LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
        apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
        apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);

	    fDistTri += fDelta_Dist;
      }
    }
  }
/********************************************************************
 * TOP limited round 4
 ********************************************************************/
//  if(fDistMax <= FAI28_45Threshold)
 if(!bBigFAISector)
	fDist_b = fDistMax*(1.0-2*FAI_NORMAL_PERCENTAGE);
  else
	fDist_b = fDistMax*FAI_BIG_MAX_PERCENTAGE;

  fDist_a = fDistMax-fDist_b-fDist_c;
  fDelta_Dist =  (fDist_a-fDist_b) / (double)(FAI_SECTOR_STEPS-1);
  for(i =0 ;i < FAI_SECTOR_STEPS; i++)
  {
	LKASSERT(fDist_c*fDist_b!=0);
	cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
	alpha = acos(cos_alpha)*180/PI * dir;
	FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);
    x1 = (lon_d - lon_c)*fastcosine(lat_d);
    y1 = (lat_d - lat_c);
    LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
    apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
    apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);

    fDist_a -= fDelta_Dist;
    fDist_b += fDelta_Dist;
  }

/********************************************************************
 * calc left leg
 ********************************************************************/

/********************************************************************
 * LEFT above threshold  5
 ********************************************************************/
  if(bBigFAISector)
  {
    fB = FAI28_45Threshold;
    if( fB < fDistMin)
	  fB = fDistMin;

    fA =fDist_c/(1- FAI_BIG_PERCENTAGE-FAI_BIG_MAX_PERCENTAGE);

    if(fA >= fB)
    {
      fDelta_Dist =(fA-fB)/ (double)(FAI_SECTOR_STEPS-1);
      fDistTri = fA;
      for(i =0 ;i < FAI_SECTOR_STEPS; i++)
      {
	    fMaxLeg = fDistTri*FAI_BIG_MAX_PERCENTAGE;
	    fMinLeg = fDistTri*FAI_BIG_PERCENTAGE;
	    fDist_a = fDistTri-fMinLeg-fDist_c;
	    fDist_b = fMinLeg;

	    if(fDist_a > fMaxLeg)
	    {
	      fDiff =  fDist_a - fMaxLeg;
	      fDist_b+=fDiff;
	      fDist_a-=fDiff;
  	    }

	    LKASSERT(fDist_c*fDist_b!=0);
	    cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
	    alpha = acos(cos_alpha)*180/PI * dir;
	    FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);
        x1 = (lon_d - lon_c)*fastcosine(lat_d);
        y1 = (lat_d - lat_c);
        LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
        apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
        apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);

	    fDistTri -= fDelta_Dist;
     }
    }
  }

  /********************************************************************
   * LEFT threshold extender
   ********************************************************************/
  if((fDistMin < FAI28_45Threshold) && (FAI28_45Threshold < fDistMax) && (bBigFAISector))
  {
	fMaxLeg = FAI28_45Threshold*FAI_BIG_MAX_PERCENTAGE;
	fMinLeg = FAI28_45Threshold*FAI_BIG_PERCENTAGE;
	fA = FAI28_45Threshold*FAI_NORMAL_PERCENTAGE;
	fB = FAI28_45Threshold-fMaxLeg-fDist_c;

	if(fB < fMinLeg)
	  fB = fMinLeg;

	fDist_b = fB;
    fDelta_Dist =  (fA-fB) / (double)(FAI_SECTOR_STEPS/2-1);
    for(i =0 ;i < FAI_SECTOR_STEPS/2; i++)
    {
	  fDist_a = FAI28_45Threshold - fDist_b - fDist_c;
	  LKASSERT(fDist_c*fDist_b!=0);
	  cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
	  alpha = acos(cos_alpha)*180/PI * dir;
	  FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);
      x1 = (lon_d - lon_c)*fastcosine(lat_d);
      y1 = (lat_d - lat_c);
      LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
      apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
      apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);
	  fDist_b += fDelta_Dist;
    }
  }


  /********************************************************************
   * LEFT below threshold 7
   ********************************************************************/
  fA = 	fDistMin;
  if(fDistMax > FAI28_45Threshold)
    fB = FAI28_45Threshold;
  else
	fB = fDistMax ;

  if(fA<fB)
  {
	fDelta_Dist =(fB-fA)/ (double)(FAI_SECTOR_STEPS-1);
	fDistTri = fB;
    for(i =0 ;i < FAI_SECTOR_STEPS; i++)
    {
	  fDist_b = FAI_NORMAL_PERCENTAGE * fDistTri;
	  fDist_a = fDistTri - fDist_b - fDist_c;

	  LKASSERT(fDist_c*fDist_b!=0);
	  cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
	  alpha = acos(cos_alpha)*180/PI * dir;
	  FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);

	  x1 = (lon_d - lon_c)*fastcosine(lat_d);
	  y1 = (lat_d - lat_c);
	  LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
	  apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
	  apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);

      fDistTri -= fDelta_Dist;
    }
  }

  /********************************************************************
   * low open PEAK round 8
   ********************************************************************/
  if(fDistMin >FAI28_45Threshold)
  {
	fDist_b = fDistMin*FAI_BIG_PERCENTAGE;
	fDist_a = fDistMin-fDist_b-fDist_c;
	fDelta_Dist =  (fDist_b-fDist_a) / (double)(FAI_SECTOR_STEPS-1);

	for(i =0 ;i < FAI_SECTOR_STEPS; i++)
	{
		LKASSERT(fDist_c*fDist_b!=0);
		cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
		alpha = acos(cos_alpha)*180/PI * dir;
		FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);
	    x1 = (lon_d - lon_c)*fastcosine(lat_d);
	    y1 = (lat_d - lat_c);
	    LKASSERT(iPolyPtr < MAX_FAI_SECTOR_PTS);
	    apSectorPolygon[iPolyPtr].x   = ScaleX(rc, x1);
	    apSectorPolygon[iPolyPtr++].y = ScaleY(rc, y1);

	  fDist_a += fDelta_Dist;
	  fDist_b -= fDelta_Dist;
	}
  }

  /********************************************************************
   * draw polygon
   ********************************************************************/
  #ifndef UNDITHER
  LKPen hpSectorPen(PEN_SOLID, IBLSCALE(1), RGB_GREEN);
  #else
  LKPen hpSectorPen(PEN_SOLID, IBLSCALE(1), RGB_RED);
  #endif
  const auto hpOldPen = Surface.SelectObject(hpSectorPen);
  LKBrush hbSectorFill;
  hbSectorFill.Create(fillcolor);
  const auto hbOldBrush = Surface.SelectObject(hbSectorFill);


  /********************************************/
  Surface.Polygon(apSectorPolygon,iPolyPtr);
  /********************************************/

  Surface.SelectObject(hpOldPen);
  Surface.SelectObject(hbOldBrush);
  hpSectorPen.Release();



  /********************************************************************
   * calc round leg grid
   ********************************************************************/
  #ifndef UNDITHER
  hpSectorPen.Create(PEN_SOLID, (1), RGB_GREY );
  #else
  hpSectorPen.Create(PEN_SOLID, (1), RGB_DARKGREY );
  #endif
  Surface.SelectObject(hpSectorPen);

  double fTic= 1/DISTANCEMODIFY;
  if(fDist_c > 5/DISTANCEMODIFY)   fTic = 10/DISTANCEMODIFY;
  if(fDist_c > 50/DISTANCEMODIFY)  fTic = 25/DISTANCEMODIFY;
  if(fDist_c > 100/DISTANCEMODIFY) fTic = 50/DISTANCEMODIFY;
//  if(fDist_c > 200/DISTANCEMODIFY) fTic = 100/DISTANCEMODIFY;
  if(fDist_c > 500/DISTANCEMODIFY) fTic = 250/DISTANCEMODIFY;
  POINT line[2];
  BOOL bFirstUnit = true;
  LKASSERT(fTic!=0);
  fDistTri = ((int)(fDistMin/fTic)+1) * fTic ;
  const auto hfOld = Surface.SelectObject(LK8PanelUnitFont);

int iCnt = 0;

  while(fDistTri <= fDistMax)
  {
    TCHAR text[180]; SIZE tsize;
	if(bFirstUnit)
	  _stprintf(text, TEXT("%i%s"), (int)(fDistTri*DISTANCEMODIFY), Units::GetUnitName(Units::GetUserDistanceUnit()));
	else
	  _stprintf(text, TEXT("%i"), (int)(fDistTri*DISTANCEMODIFY));
	bFirstUnit = false;
	Surface.GetTextSize(text, _tcslen(text), &tsize);
        #ifndef UNDITHER
	Surface.SetTextColor(RGB_GREY);
        #else
	Surface.SetTextColor(RGB_DARKGREY);
        #endif
    int j=0;

	if(fDistTri < FAI28_45Threshold)
	{
	  fDist_b = fDistTri*FAI_NORMAL_PERCENTAGE;
	  fDist_a = fDistTri-fDist_b-fDist_c;
	  fDelta_Dist =  (fDist_a-fDist_b) / (double)(FAI_SECTOR_STEPS-1);
	}
	else
	{
      fMaxLeg = fDistTri*FAI_BIG_MAX_PERCENTAGE;
      fMinLeg = fDistTri*FAI_BIG_PERCENTAGE;
	  fA = fMaxLeg;
	  fB = fDistTri-fA-fDist_c;
	  fDist_a = fA;
	  fDist_b = fB;
	  if(fB < fMinLeg)
	  {
		  fDiff = fMinLeg-fB;
		  fB+=2*fDiff;
		  fDist_b += fDiff;
		  fDist_a -= fDiff;
	  }
	  if(fB > fMaxLeg)
	  {
		  fDiff =  fB - fMaxLeg;
		  fB+=2*fDiff;
		  fDist_b-=fDiff;
		  fDist_a+=fDiff;
	  }
	  fFAI_Percentage =  FAI_BIG_PERCENTAGE;
	  fDelta_Dist =  (fA-fB) / (double)(FAI_SECTOR_STEPS-1);
	}


    for(i =0 ;i < FAI_SECTOR_STEPS; i++)
    {
	  LKASSERT(fDist_c*fDist_b!=0);
	  cos_alpha = ( fDist_b*fDist_b + fDist_c*fDist_c - fDist_a*fDist_a )/(2.0*fDist_c*fDist_b);
	  alpha = acos(cos_alpha)*180/PI * dir;
	  FindLatitudeLongitude(lat1, lon1, AngleLimit360( fAngle + alpha ) , fDist_b, &lat_d, &lon_d);
      x1 = (lon_d - lon_c)*fastcosine(lat_d);
      y1 = (lat_d - lat_c);

      line[0].x = ScaleX(rc, x1);
      line[0].y = ScaleY(rc, y1);

      if(j>0)
      {
	    Surface.Polyline(line, 2);
      }

      if(j==0)
      {
    	Surface.DrawText(line[0].x, line[0].y, text, _tcslen(text));
    	j=1;

      }
      line[1] =  line[0];



	  fDist_a -= fDelta_Dist;
	  fDist_b += fDelta_Dist;
    }
    fDistTri+=fTic;iCnt++;
  }

Surface.SelectObject(hfOld);
Surface.SelectObject(hpOldPen);
return 0;
}