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Added panel jitter support dependent on cockpit forces (visual force feedback)

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curt 2001-10-05 20:26:21 +00:00
parent ba10c133fc
commit cb0aa1baa1
2 changed files with 31 additions and 2 deletions
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32
src/Cockpit/panel.cxx
View file

@ -171,6 +171,7 @@ FGPanel::FGPanel ()
_width(WIN_W), _height(int(WIN_H * 0.5768 + 1)),
_x_offset(0), _y_offset(0), _view_height(int(WIN_H * 0.4232)),
_bound(false),
_jitter(0.0),
_xsize_node(fgGetNode("/sim/startup/xsize", true)),
_ysize_node(fgGetNode("/sim/startup/ysize", true))
{
@ -226,6 +227,8 @@ FGPanel::bind ()
fgSetArchivable("/sim/panel/x-offset");
fgTie("/sim/panel/y-offset", &_y_offset);
fgSetArchivable("/sim/panel/y-offset");
fgTie("/sim/panel/jitter", &_jitter);
fgSetArchivable("/sim/panel/jitter");
_bound = true;
}
@ -275,6 +278,31 @@ FGPanel::update ()
void
FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
{
// Calculate accelerations
// and jiggle the panel accordingly
// The factors and bounds are just
// initial guesses; using sqrt smooths
// out the spikes.
double x_offset = _x_offset;
double y_offset = _y_offset;
if (_jitter != 0.0) {
double a_x_pilot = current_aircraft.fdm_state->get_A_X_pilot();
double a_y_pilot = current_aircraft.fdm_state->get_A_Y_pilot();
double a_z_pilot = current_aircraft.fdm_state->get_A_Z_pilot();
double a_zx_pilot = a_z_pilot - a_x_pilot;
int x_adjust = int(sqrt(fabs(a_y_pilot) * _jitter)) *
(a_y_pilot < 0 ? -1 : 1);
int y_adjust = int(sqrt(fabs(a_zx_pilot) * _jitter)) *
(a_zx_pilot < 0 ? -1 : 1);
// adjustments in screen coordinates
x_offset += x_adjust;
y_offset += y_adjust;
}
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
@ -285,7 +313,7 @@ FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
glPushMatrix();
glLoadIdentity();
glTranslated(_x_offset, _y_offset, 0);
glTranslated(x_offset, y_offset, 0);
// Draw the background
glEnable(GL_TEXTURE_2D);
@ -317,7 +345,7 @@ FGPanel::update (GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh)
for ( ; current != end; current++) {
FGPanelInstrument * instr = *current;
glLoadIdentity();
glTranslated(_x_offset, _y_offset, 0);
glTranslated(x_offset, y_offset, 0);
glTranslated(instr->getXPos(), instr->getYPos(), 0);
instr->draw();
}

1
src/Cockpit/panel.hxx
View file

@ -190,6 +190,7 @@ private:
int _y_offset;
int _view_height;
bool _bound;
float _jitter;
const SGPropertyNode * _xsize_node;
const SGPropertyNode * _ysize_node;