void StarsApp::render()
{
// draw background
mBackground.draw();
// draw grid
if(mIsGridVisible)
mGrid.draw();
// draw stars
mStars.draw();
// draw constellations
if(mIsConstellationsVisible)
mConstellations.draw();
// draw labels (for now, labels don't behave well in cylindrical view)
if(mIsLabelsVisible && !mIsCylindrical) {
mLabels.draw();
if(mIsConstellationsVisible)
mConstellationLabels.draw();
}
}
void StarsApp::update()
{
double elapsed = getElapsedSeconds() - mTime;
mTime += elapsed;
double time = getElapsedSeconds() / 200.0;
if(mSoundEngine && mMusic && mPlayMusic) time = mMusic->getPlayPosition() / (double) mMusic->getPlayLength();
// animate camera
mCamera.setDistanceTime(time);
mCamera.update(elapsed);
// adjust content based on camera distance
float distance = mCamera.getCamera().getEyePoint().length();
mBackground.setCameraDistance( distance );
mLabels.setCameraDistance( distance );
mConstellations.setCameraDistance( distance );
mConstellationLabels.setCameraDistance( distance );
mUserInterface.setCameraDistance( distance );
//
if(mSoundEngine) {
// send camera position to sound engine (for 3D sounds)
Vec3f pos = mCamera.getPosition();
mSoundEngine->setListenerPosition(
vec3df(pos.x, pos.y, pos.z),
vec3df(-pos.x, -pos.y, -pos.z),
vec3df(0,0,0),
vec3df(0,1,0) );
// if music has finished, play next track
if( mPlayMusic && mMusic && mMusic->isFinished() ) {
playMusic( getNextFile(mMusicPath) );
}
}
}
void StarsApp::keyDown( KeyEvent event )
{
#ifdef WIN32
// allows the use of the media buttons on your Windows keyboard to control the music
switch( event.getNativeKeyCode() )
{
case VK_MEDIA_NEXT_TRACK:
// play next music file
playMusic( getNextFile(mMusicPath) );
return;
case VK_MEDIA_PREV_TRACK:
// play next music file
playMusic( getPrevFile(mMusicPath) );
return;
case VK_MEDIA_STOP:
stopMusic();
return;
case VK_MEDIA_PLAY_PAUSE:
if( mSoundEngine && mMusic ) {
if( mMusic->isFinished() )
playMusic( mMusicPath );
else
mMusic->setIsPaused( !mMusic->getIsPaused() );
}
return;
}
#endif
switch( event.getCode() )
{
case KeyEvent::KEY_f:
// toggle full screen
setFullScreen( !isFullScreen() );
if( !isFullScreen() )
forceShowCursor();
break;
case KeyEvent::KEY_v:
gl::enableVerticalSync( !gl::isVerticalSyncEnabled() );
break;
case KeyEvent::KEY_ESCAPE:
// quit the application
quit();
break;
case KeyEvent::KEY_SPACE:
// enable animation
mCamera.setup();
break;
case KeyEvent::KEY_g:
// toggle grid
mIsGridVisible = !mIsGridVisible;
break;
case KeyEvent::KEY_l:
// toggle labels
mIsLabelsVisible = !mIsLabelsVisible;
break;
case KeyEvent::KEY_c:
// toggle constellations
mIsConstellationsVisible = !mIsConstellationsVisible;
break;
case KeyEvent::KEY_a:
// toggle cursor arrow
if(mIsCursorVisible)
forceHideCursor();
else
forceShowCursor();
break;
case KeyEvent::KEY_s:
// toggle stereoscopic view
mIsStereoscopic = !mIsStereoscopic;
mIsCylindrical = false;
mStars.setAspectRatio( mIsStereoscopic ? 0.5f : 1.0f );
break;
case KeyEvent::KEY_d:
// cylindrical panorama
mIsCylindrical = !mIsCylindrical;
mIsStereoscopic = false;
// adjust line width
mGrid.setLineWidth( mIsCylindrical ? 3.0f : 1.5f );
mConstellations.setLineWidth( mIsCylindrical ? 2.0f : 1.0f );
break;
case KeyEvent::KEY_RETURN:
createShader();
break;
case KeyEvent::KEY_PLUS:
case KeyEvent::KEY_EQUALS:
case KeyEvent::KEY_KP_PLUS:
mCamera.setFov( mCamera.getFov() + 0.1 );
break;
case KeyEvent::KEY_MINUS:
case KeyEvent::KEY_UNDERSCORE:
case KeyEvent::KEY_KP_MINUS:
mCamera.setFov( mCamera.getFov() - 0.1 );
break;
}
}
void StarsApp::setup()
{
// create the spherical grid mesh
mGrid.setup();
// load the star database and create the VBO mesh
if( fs::exists( getAssetPath("") / "stars.cdb" ) )
mStars.read( loadFile( getAssetPath("") / "stars.cdb" ) );
if( fs::exists( getAssetPath("") / "labels.cdb" ) )
mLabels.read( loadFile( getAssetPath("") / "labels.cdb" ) );
if( fs::exists( getAssetPath("") / "constellations.cdb" ) )
mConstellations.read( loadFile( getAssetPath("") / "constellations.cdb" ) );
if( fs::exists( getAssetPath("") / "constellationlabels.cdb" ) )
mConstellationLabels.read( loadFile( getAssetPath("") / "constellationlabels.cdb" ) );
// create user interface
mUserInterface.setup();
// initialize background image
mBackground.setup();
// initialize camera
mCamera.setup();
CameraPersp cam( mCamera.getCamera() );
cam.setNearClip( 0.01f );
cam.setFarClip( 5000.0f );
//
mIsGridVisible = true;
mIsLabelsVisible = true;
mIsConstellationsVisible = true;
mIsStereoscopic = false;
mIsCylindrical = false;
// create stars
mStars.setup();
mStars.setAspectRatio( mIsStereoscopic ? 0.5f : 1.0f );
// create labels
mLabels.setup();
mConstellationLabels.setup();
//
mMusicExtensions.push_back( ".flac" );
mMusicExtensions.push_back( ".ogg" );
mMusicExtensions.push_back( ".wav" );
mMusicExtensions.push_back( ".mp3" );
mPlayMusic = true;
// initialize the IrrKlang Sound Engine in a very safe way
mSoundEngine = shared_ptr<ISoundEngine>( createIrrKlangDevice(), std::mem_fun(&ISoundEngine::drop) );
if(mSoundEngine) {
// play 3D Sun rumble
mSound = createSound( getAssetPath("") / "sound/low_rumble_loop.mp3" );
if(mSound) {
mSound->setIsLooped(true);
mSound->setMinDistance(2.5f);
mSound->setMaxDistance(12.5f);
mSound->setIsPaused(false);
}
// play background music (the first .mp3 file found in ./assets/music)
fs::path path = getFirstFile( getAssetPath("") / "music" );
playMusic(path);
}
//
createShader();
//
mTimer.start();
#if (defined WIN32 && defined NDEBUG)
forceHideCursor();
#else
forceShowCursor();
#endif
mTime = getElapsedSeconds();
}
void StarsApp::draw()
{
float w = 0.5f * getWindowWidth();
float h = 1.0f * getWindowHeight();
gl::clear( Color::black() );
if(mIsStereoscopic) {
glPushAttrib( GL_VIEWPORT_BIT );
// render left eye
gl::setViewport( Area(0, 0, w, h) );
mCamera.enableStereoLeft();
gl::pushMatrices();
gl::setMatrices( mCamera.getCamera() );
{
// draw background
mBackground.draw();
// draw grid
if(mIsGridVisible)
mGrid.draw();
// draw stars
mStars.draw();
// draw constellations
if(mIsConstellationsVisible) {
mConstellations.draw();
mConstellationLabels.draw();
}
// draw labels
if(mIsLabelsVisible)
mLabels.draw();
}
gl::popMatrices();
// draw user interface
mUserInterface.draw();
// render right eye
gl::setViewport( Area(w, 0, w * 2.0f, h) );
mCamera.enableStereoRight();
gl::pushMatrices();
gl::setMatrices( mCamera.getCamera() );
{
// draw background
mBackground.draw();
// draw grid
if(mIsGridVisible)
mGrid.draw();
// draw stars
mStars.draw();
// draw constellations
if(mIsConstellationsVisible) {
mConstellations.draw();
mConstellationLabels.draw();
}
// draw labels
if(mIsLabelsVisible)
mLabels.draw();
}
gl::popMatrices();
// draw user interface
mUserInterface.draw();
glPopAttrib();
}
else {
mCamera.disableStereo();
gl::pushMatrices();
gl::setMatrices( mCamera.getCamera() );
{
// draw background
mBackground.draw();
// draw grid
if(mIsGridVisible)
mGrid.draw();
// draw stars
mStars.draw();
// draw constellations
if(mIsConstellationsVisible) {
mConstellations.draw();
mConstellationLabels.draw();
}
// draw labels
if(mIsLabelsVisible)
mLabels.draw();
}
gl::popMatrices();
// draw user interface
mUserInterface.draw();
}
// fade in at start of application
gl::enableAlphaBlending();
double t = math<double>::clamp( mTimer.getSeconds() / 3.0, 0.0, 1.0 );
float a = ci::lerp<float>(1.0f, 0.0f, (float) t);
if( a > 0.0f ) {
gl::color( ColorA(0,0,0,a) );
gl::drawSolidRect( getWindowBounds() );
}
gl::disableAlphaBlending();
}
