+ glBegin(GL_LINE_LOOP);
+ glVertex2f( ss_const, -hole);
+ glVertex2f( ss_const + hole, zero);
+ glVertex2f( ss_const, hole);
+ glVertex2f( ss_const - hole, zero);
+ glEnd();
+
+
+ }
+
+
+ else //if tsi enabled
+ {
+ float factor = My_box.right / 6.0;
+
+ drawOneLine(cen_x-1.0, My_box.top, cen_x+1.0, My_box.top);
+ drawOneLine(cen_x-1.0, My_box.top, cen_x-1.0, My_box.top+10.0);
+ drawOneLine(cen_x+1.0, My_box.top, cen_x+1.0, My_box.top+10.0);
+ drawOneLine(cen_x-1.0, My_box.top+10.0, cen_x+1.0, My_box.top+10.0);
+
+ float x1, y1, x2, y2, x3, y3, x4,y4, x5, y5;
+ float xc, yc, r=rad, r1= rad-10.0, r2=rad-5.0;
+
+ xc = My_box.left + My_box.right/ 2.0 ;
+ yc = My_box.top + r;
+
+//first n last lines
+ x1= xc + r * cos (255.0 * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin (255.0 * SGD_DEGREES_TO_RADIANS);
+
+ x2= xc + r1 * cos (255.0 * SGD_DEGREES_TO_RADIANS);
+ y2= yc + r1 * sin (255.0 * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x1,y1,x2,y2);
+
+ x1= xc + r * cos (285.0 * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin (285.0 * SGD_DEGREES_TO_RADIANS);
+
+ x2= xc + r1 * cos (285.0 * SGD_DEGREES_TO_RADIANS);
+ y2= yc + r1 * sin (285.0 * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x1,y1,x2,y2);
+
+//second n fifth lines
+
+ x1= xc + r * cos (260.0 * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin (260.0 * SGD_DEGREES_TO_RADIANS);
+
+ x2= xc + r2 * cos (260.0 * SGD_DEGREES_TO_RADIANS);
+ y2= yc + r2 * sin (260.0 * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x1,y1,x2,y2);
+
+ x1= xc + r * cos (280.0 * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin (280.0 * SGD_DEGREES_TO_RADIANS);
+
+
+ x2= xc + r2 * cos (280.0 * SGD_DEGREES_TO_RADIANS);
+ y2= yc + r2 * sin (280.0 * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x1,y1,x2,y2);
+
+//third n fourth lines
+
+
+ x1= xc + r * cos (265.0 * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin (265.0 * SGD_DEGREES_TO_RADIANS);
+
+
+ x2= xc + r2 * cos (265.0 * SGD_DEGREES_TO_RADIANS);
+ y2= yc + r2 * sin (265.0 * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x1,y1,x2,y2);
+
+ x1= xc + r * cos (275.0 * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin (275.0 * SGD_DEGREES_TO_RADIANS);
+
+ x2= xc + r2 * cos (275.0 * SGD_DEGREES_TO_RADIANS);
+ y2= yc + r2 * sin (275.0 * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x1,y1,x2,y2);
+
+ //to draw marker
+
+
+
+ float valbank, valsideslip, sideslip;
+
+ r = rad + 5.0; //5 is added to get a gap
+ // upper polygon
+ bank_angle = current_ch2();
+
+ bank= bank_angle * SGD_RADIANS_TO_DEGREES; // Roll limit +/- 30 degrees
+ if(bank > BankLimit)
+ bank = BankLimit;
+ if(bank < -1.0*BankLimit)
+ bank = -1.0*BankLimit;
+
+ valbank = bank * 15.0 / BankLimit; // total span of TSI is 30 degrees
+
+ sideslip_angle = current_ch1(); // Sideslip limit +/- 20 degrees
+ sideslip= sideslip_angle * SGD_RADIANS_TO_DEGREES;
+ if(sideslip > SlewLimit)
+ sideslip = SlewLimit;
+ if(sideslip < -1.0*SlewLimit)
+ sideslip = -1.0*SlewLimit;
+ valsideslip = sideslip * 15.0 / SlewLimit;
+
+ //values 270, 225 and 315 are angles in degrees...
+
+ x1= xc + r * cos ((valbank+270.0) * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin ((valbank+270.0) * SGD_DEGREES_TO_RADIANS);
+
+ x2= x1 + 6.0 * cos (225 * SGD_DEGREES_TO_RADIANS);
+ y2= y1 + 6.0 * sin (225 * SGD_DEGREES_TO_RADIANS);
+
+ x3= x1 + 6.0 * cos (315 * SGD_DEGREES_TO_RADIANS);
+ y3= y1 + 6.0 * sin (315 * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x1, y1, x2, y2);
+ drawOneLine(x2, y2, x3, y3);
+ drawOneLine(x3, y3, x1, y1);
+
+ //lower polygon...
+
+
+
+ x1= xc + r * cos ((valbank+270.0) * SGD_DEGREES_TO_RADIANS);
+ y1= yc + r * sin ((valbank+270.0) * SGD_DEGREES_TO_RADIANS);
+
+ x2= x1 + 6.0 * cos (225 * SGD_DEGREES_TO_RADIANS);
+ y2= y1 + 6.0 * sin (225 * SGD_DEGREES_TO_RADIANS);
+
+ x3= x1 + 6.0 * cos (315 * SGD_DEGREES_TO_RADIANS);
+ y3= y1 + 6.0 * sin (315 * SGD_DEGREES_TO_RADIANS);
+
+ x4= x1 + 10.0 * cos (225 * SGD_DEGREES_TO_RADIANS);
+ y4= y1 + 10.0 * sin (225 * SGD_DEGREES_TO_RADIANS);
+
+ x5= x1 + 10.0 * cos (315 * SGD_DEGREES_TO_RADIANS);
+ y5= y1 + 10.0 * sin (315 * SGD_DEGREES_TO_RADIANS);
+
+ x2 = x2 + cos (valsideslip * SGD_DEGREES_TO_RADIANS);
+ y2 = y2 + sin (valsideslip * SGD_DEGREES_TO_RADIANS);
+ x3 = x3 + cos (valsideslip * SGD_DEGREES_TO_RADIANS);
+ y3 = y3 + sin (valsideslip * SGD_DEGREES_TO_RADIANS);
+ x4 = x4 + cos (valsideslip * SGD_DEGREES_TO_RADIANS);
+ y4 = y4 + sin (valsideslip * SGD_DEGREES_TO_RADIANS);
+ x5 = x5 + cos (valsideslip * SGD_DEGREES_TO_RADIANS);
+ y5 = y5 + sin (valsideslip * SGD_DEGREES_TO_RADIANS);
+
+ drawOneLine(x2, y2, x3, y3);
+ drawOneLine(x3, y3, x5, y5);
+ drawOneLine(x5, y5, x4, y4);
+ drawOneLine(x4, y4, x2, y2);
+
+
+ }
+
+ glPopMatrix();