_bank(n->getNode("bank-input", false)),
_sideslip(n->getNode("sideslip-input", false)),
_gap_width(n->getFloatValue("gap-width", 5)),
- _bank_scale(n->getBoolValue("bank-scale", false)),
- _bank_scale_radius(n->getFloatValue("bank-scale-radius", 250.0))
+ _bank_scale(n->getBoolValue("bank-scale", false))
{
if (!_bank_scale) {
_bank.set_max(30.0, false);
if (!_bank.isValid() || !_sideslip.isValid())
return;
+ if (_bank_scale)
+ draw_scale();
+ else
+ draw_tee();
+}
+
+
+void HUD::TurnBankIndicator::draw_tee()
+{
+ // ___________ /\ ___________
+ // | \/ |
+
float bank = _bank.getFloatValue();
float sideslip = _sideslip.getFloatValue();
float span = get_span();
+ float tee = -_h;
- float tee_height = _h;
- float tee = -tee_height;
- float ss_const = 2 * sideslip * span / 40.0; // sideslip angle pixels per deg (width represents 40 deg)
+ // sideslip angle pixels per deg (width represents 40 deg)
+ float ss_const = 2 * sideslip * span / 40.0;
glPushMatrix();
glTranslatef(_center_x, _center_y, 0.0);
glRotatef(-bank, 0.0, 0.0, 1.0);
- if (!_bank_scale) {
- glBegin(GL_LINES);
-
- if (!_gap_width) {
- glVertex2f(-span, 0.0);
- glVertex2f(span, 0.0);
-
- } else {
- glVertex2f(-span, 0.0);
- glVertex2f(-_gap_width, 0.0);
- glVertex2f(_gap_width, 0.0);
- glVertex2f(span, 0.0);
- }
-
- // draw teemarks
- glVertex2f(_gap_width, 0.0);
- glVertex2f(_gap_width, tee);
- glVertex2f(-_gap_width, 0.0);
- glVertex2f(-_gap_width, tee);
- glEnd();
-
- glBegin(GL_LINE_LOOP);
- glVertex2f(ss_const, -_gap_width);
- glVertex2f(ss_const + _gap_width, 0.0);
- glVertex2f(ss_const, _gap_width);
- glVertex2f(ss_const - _gap_width, 0.0);
- glEnd();
-
-
- } else { // draw MIL-STD 1878B/4.2.2.4 bank scale
- draw_line(_center_x - 1.0, _y, _center_x + 1.0, _y);
- draw_line(_center_x - 1.0, _y, _center_x - 1.0, _y + 10.0);
- draw_line(_center_x + 1.0, _y, _center_x + 1.0, _y + 10.0);
- draw_line(_center_x - 1.0, _y + 10.0, _center_x + 1.0, _y + 10.0);
-
- float x1, y1, x2, y2, x3, y3, x4, y4, x5, y5;
- float xc, yc;
- float r = _bank_scale_radius;
- float r1 = r - 10.0;
- float r2 = r - 5.0;
-
- xc = _x + _w / 2.0; // FIXME redunant, no?
- yc = _y + 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);
+ glBegin(GL_LINES);
- x2 = xc + r1 * cos(255.0 * SGD_DEGREES_TO_RADIANS);
- y2 = yc + r1 * sin(255.0 * SGD_DEGREES_TO_RADIANS);
- draw_line(x1, y1, x2, y2);
+ if (!_gap_width) {
+ glVertex2f(-span, 0.0);
+ glVertex2f(span, 0.0);
- x1 = xc + r * cos(285.0 * SGD_DEGREES_TO_RADIANS);
- y1 = yc + r * sin(285.0 * SGD_DEGREES_TO_RADIANS);
+ } else {
+ glVertex2f(-span, 0.0);
+ glVertex2f(-_gap_width, 0.0);
+ glVertex2f(_gap_width, 0.0);
+ glVertex2f(span, 0.0);
+ }
- x2 = xc + r1 * cos(285.0 * SGD_DEGREES_TO_RADIANS);
- y2 = yc + r1 * sin(285.0 * SGD_DEGREES_TO_RADIANS);
- draw_line(x1, y1, x2, y2);
+ // draw teemarks
+ glVertex2f(_gap_width, 0.0);
+ glVertex2f(_gap_width, tee);
+ glVertex2f(-_gap_width, 0.0);
+ glVertex2f(-_gap_width, tee);
+ glEnd();
- // second n fifth lines
- x1 = xc + r * cos(260.0 * SGD_DEGREES_TO_RADIANS);
- y1 = yc + r * sin(260.0 * SGD_DEGREES_TO_RADIANS);
+ glBegin(GL_LINE_LOOP);
+ glVertex2f(ss_const, -_gap_width);
+ glVertex2f(ss_const + _gap_width, 0.0);
+ glVertex2f(ss_const, _gap_width);
+ glVertex2f(ss_const - _gap_width, 0.0);
+ glEnd();
- x2 = xc + r2 * cos(260.0 * SGD_DEGREES_TO_RADIANS);
- y2 = yc + r2 * sin(260.0 * SGD_DEGREES_TO_RADIANS);
- draw_line(x1, y1, x2, y2);
+ glPopMatrix();
+}
- 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);
- draw_line(x1, y1, x2, y2);
+void HUD::TurnBankIndicator::draw_scale()
+{
+ // MIL-STD 1878B/4.2.2.4 bank scale
+ float bank = _bank.getFloatValue();
+ float sideslip = _sideslip.getFloatValue();
- // third n fourth lines
- x1 = xc + r * cos(265.0 * SGD_DEGREES_TO_RADIANS);
- y1 = yc + r * sin(265.0 * SGD_DEGREES_TO_RADIANS);
+ float cx = _center_x;
+ float cy = _center_y;
+
+ float r = _w / 2.0;
+ float minor = r - r * 3.0 / 70.0;
+ float major = r - r * 5.0 / 70.0;
+
+ // hollow 0 degree mark
+ float w = r / 70.0;
+ if (w < 1.0)
+ w = 1.0;
+ float h = r * 6.0 / 70.0;
+ draw_line(cx - w, _y, cx + w, _y);
+ draw_line(cx - w, _y, cx - w, _y + h);
+ draw_line(cx + w, _y, cx + w, _y + h);
+ draw_line(cx - w, _y + h, cx + w, _y + h);
+
+ // tick lines
+ draw_tick(10, r, minor, 0);
+ draw_tick(20, r, minor, 0);
+ draw_tick(30, r, major, 0);
+
+ int dir = bank > 0 ? 1 : -1;
+
+ if (fabs(bank) > 25) {
+ draw_tick(45, r, minor, dir);
+ draw_tick(60, r, major, dir);
+ }
+ if (fabs(bank) > 55) {
+ draw_tick(90, r, major, dir);
+ draw_tick(135, r, major, dir);
+ }
- x2 = xc + r2 * cos(265.0 * SGD_DEGREES_TO_RADIANS);
- y2 = yc + r2 * sin(265.0 * SGD_DEGREES_TO_RADIANS);
- draw_line(x1, y1, x2, y2);
+ // bank marker
+ float a;
+ float rr = r + r * 0.5 / 70.0; // little gap for the arrow peak
- x1 = xc + r * cos(275.0 * SGD_DEGREES_TO_RADIANS);
- y1 = yc + r * sin(275.0 * SGD_DEGREES_TO_RADIANS);
+ a = (bank + 270.0) * SGD_DEGREES_TO_RADIANS;
+ float x1 = cx + rr * cos(a);
+ float y1 = cy + rr * sin(a);
- x2 = xc + r2 * cos(275.0 * SGD_DEGREES_TO_RADIANS);
- y2 = yc + r2 * sin(275.0 * SGD_DEGREES_TO_RADIANS);
- draw_line(x1, y1, x2, y2);
+ rr = r * 3.0 / 70.0;
+ a = (bank + 240.0) * SGD_DEGREES_TO_RADIANS;
+ float x2 = x1 + rr * cos(a);
+ float y2 = y1 + rr * sin(a);
- // draw marker
- r = _bank_scale_radius + 5.0; // add gap
+ a = (bank + 300.0) * SGD_DEGREES_TO_RADIANS;
+ float x3 = x1 + rr * cos(a);
+ float y3 = y1 + rr * sin(a);
- // upper polygon
- float valbank = bank * 15.0 / _bank.max(); // total span of TSI is 30 degrees
- float valsideslip = sideslip * 15.0 / _sideslip.max();
+ draw_line(x1, y1, x2, y2);
+ draw_line(x2, y2, x3, y3);
+ draw_line(x3, y3, x1, y1);
- // 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);
+ // sideslip marker
+ rr = r + r * 0.5 / 70.0;
+ a = (bank + sideslip + 270.0) * SGD_DEGREES_TO_RADIANS;
+ x1 = cx + rr * cos(a);
+ y1 = cy + rr * sin(a);
- draw_line(x1, y1, x2, y2);
- draw_line(x2, y2, x3, y3);
- draw_line(x3, y3, x1, y1);
+ rr = r * 3.0 / 70.0;
+ a = (bank + sideslip + 240.0) * SGD_DEGREES_TO_RADIANS;
+ x2 = x1 + rr * cos(a);
+ y2 = y1 + rr * sin(a);
- // lower polygon // FIXME this is inefficient and wrong!
- x1 = xc + r * cos((valbank + 270.0) * SGD_DEGREES_TO_RADIANS);
- y1 = yc + r * sin((valbank + 270.0) * SGD_DEGREES_TO_RADIANS);
+ a = (bank + sideslip + 300.0) * SGD_DEGREES_TO_RADIANS;
+ x3 = x1 + rr * cos(a);
+ y3 = y1 + rr * sin(a);
- x2 = x1 + 6.0 * cos(225 * SGD_DEGREES_TO_RADIANS);
- y2 = y1 + 6.0 * sin(225 * SGD_DEGREES_TO_RADIANS);
+ rr = r * 6.0 / 70.0;
+ a = (bank + sideslip + 240.0) * SGD_DEGREES_TO_RADIANS;
+ float x4 = x1 + rr * cos(a);
+ float y4 = y1 + rr * sin(a);
- x3 = x1 + 6.0 * cos(315 * SGD_DEGREES_TO_RADIANS);
- y3 = y1 + 6.0 * sin(315 * SGD_DEGREES_TO_RADIANS);
+ a = (bank + sideslip + 300.0) * SGD_DEGREES_TO_RADIANS;
+ float x5 = x1 + rr * cos(a);
+ float y5 = y1 + rr * sin(a);
- x4 = x1 + 10.0 * cos(225 * SGD_DEGREES_TO_RADIANS);
- y4 = y1 + 10.0 * sin(225 * SGD_DEGREES_TO_RADIANS);
+ draw_line(x2, y2, x3, y3);
+ draw_line(x3, y3, x5, y5);
+ draw_line(x5, y5, x4, y4);
+ draw_line(x4, y4, x2, y2);
+}
- x5 = x1 + 10.0 * cos(315 * SGD_DEGREES_TO_RADIANS);
- y5 = y1 + 10.0 * sin(315 * SGD_DEGREES_TO_RADIANS);
- float cosss = cos(valsideslip * SGD_DEGREES_TO_RADIANS);
- float sinss = sin(valsideslip * SGD_DEGREES_TO_RADIANS);
+void HUD::TurnBankIndicator::draw_tick(float angle, float r1, float r2, int side)
+{
+ float a = (270 - angle) * SGD_DEGREES_TO_RADIANS;
+ float c = cos(a);
+ float s = sin(a);
+ float x1 = r1 * c;
+ float x2 = r2 * c;
+ float y1 = _center_y + r1 * s;
+ float y2 = _center_y + r2 * s;
+ if (side >= 0)
+ draw_line(_center_x - x1, y1, _center_x - x2, y2);
+ if (side <= 0)
+ draw_line(_center_x + x1, y1, _center_x + x2, y2);
+}
- x2 = x2 + cosss;
- y2 = y2 + sinss;
- x3 = x3 + cosss;
- y3 = y3 + sinss;
- x4 = x4 + cosss;
- y4 = y4 + sinss;
- x5 = x5 + cosss;
- y5 = y5 + sinss;
- draw_line(x2, y2, x3, y3);
- draw_line(x3, y3, x5, y5);
- draw_line(x5, y5, x4, y4);
- draw_line(x4, y4, x2, y2);
- }
- glPopMatrix();
+void HUD::TurnBankIndicator::draw_line(float x1, float y1, float x2, float y2)
+{
+ if (option_top()) {
+ float y = 2.0 * _center_y; // mirror vertically
+ Item::draw_line(x1, y - y1, x2, y - y2);
+ } else
+ Item::draw_line(x1, y1, x2, y2);
}
projects / flightgear.git / blobdiff