fly/flightgear
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Added some cheap eye candy to entertain myself for a few minutes. Splash

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screen now fades out revealing the scene.
This commit is contained in:
curt 2002-11-17 01:21:13 +00:00
parent 928309d3d1
commit 2384d0ed51
3 changed files with 24 additions and 10 deletions

11
src/Main/main.cxx
View file

@ -481,7 +481,7 @@ void fgRenderFrame() {
if ( idle_state != 1000 ) {
// still initializing, draw the splash screen
if ( fgGetBool("/sim/startup/splash-screen") ) {
fgSplashUpdate(0.0);
fgSplashUpdate(0.0, 1.0);
}
// Keep resetting sim time while the sim is initializing
globals->set_sim_time_sec( 0.0 );
@ -864,6 +864,13 @@ void fgRenderFrame() {
glEnable( GL_DEPTH_TEST );
glEnable( GL_FOG );
// Fade out the splash screen over the first three seconds.
double t = globals->get_sim_time_sec();
if ( t <= 1.0 ) {
fgSplashUpdate(0.0, 1.0);
} else if ( t <= 3.0) {
fgSplashUpdate(0.0, (3.0 - t) / 2.0);
}
}
glutSwapBuffers();
@ -1348,7 +1355,7 @@ static void fgIdleFunction ( void ) {
glutIdleFunc(fgMainLoop);
} else {
if ( fgGetBool("/sim/startup/splash-screen") ) {
fgSplashUpdate(0.0);
fgSplashUpdate(0.0, 1.0);
}
}
}

21
src/Main/splash.cxx
View file

@ -105,7 +105,7 @@ void fgSplashInit ( void ) {
// Update the splash screen with progress specified from 0.0 to 1.0
void fgSplashUpdate ( double progress ) {
void fgSplashUpdate ( double progress, float alpha ) {
int xmin, ymin, xmax, ymax;
int xsize = 480;
int ysize = 380;
@ -121,11 +121,6 @@ void fgSplashUpdate ( double progress ) {
ymin = (fgGetInt("/sim/startup/ysize") - ysize) / 2;
ymax = ymin + ysize;
// first clear the screen;
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
// now draw the logo
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
@ -137,6 +132,17 @@ void fgSplashUpdate ( double progress ) {
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
// draw the background
glColor4f( 0.0, 0.0, 0.0, alpha );
glBegin(GL_POLYGON);
glVertex2f(0.0, 0.0);
glVertex2f(fgGetInt("/sim/startup/xsize"), 0.0);
glVertex2f(fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize"));
glVertex2f(0.0, fgGetInt("/sim/startup/ysize"));
glEnd();
// now draw the logo
glEnable(GL_TEXTURE_2D);
#ifdef GL_VERSION_1_1
glBindTexture(GL_TEXTURE_2D, splash_texid);
@ -145,8 +151,9 @@ void fgSplashUpdate ( double progress ) {
#else
# error port me
#endif
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glColor4f( 1.0, 1.0, 1.0, alpha );
glBegin(GL_POLYGON);
glTexCoord2f(0.0, 0.0); glVertex2f(xmin, ymin);
glTexCoord2f(1.0, 0.0); glVertex2f(xmax, ymin);

2
src/Main/splash.hxx
View file

@ -35,7 +35,7 @@
void fgSplashInit ( void );
// Update the splash screen with progress specified from 0.0 to 1.0
void fgSplashUpdate ( double progress );
void fgSplashUpdate ( double progress, float alpha );
#endif // _SPLASH_HXX