void SixAxisNavigationToolFactory::Configuration::load(const Misc::ConfigurationFileSection& cfs)
{
/* Get parameters: */
translateFactor=cfs.retrieveValue<Scalar>("./translateFactor",translateFactor);
translations=cfs.retrieveValue<Misc::FixedArray<Vector,3> >("./translationVectors",translations);
rotateFactor=cfs.retrieveValue<Scalar>("./rotateFactor",rotateFactor);
rotations=cfs.retrieveValue<Misc::FixedArray<Vector,3> >("./scaledRotationAxes",rotations);
zoomFactor=cfs.retrieveValue<Scalar>("./zoomFactor",zoomFactor);
if(cfs.hasTag("./navigationCenter"))
navigationCenter=cfs.retrieveValue<Point>("./navigationCenter",navigationCenter);
else
followDisplayCenter=true;
invertNavigation=cfs.retrieveValue<bool>("./invertNavigation",invertNavigation);
showNavigationCenter=cfs.retrieveValue<bool>("./showNavigationCenter",showNavigationCenter);
}
void SixAxisTransformToolFactory::Configuration::load(const Misc::ConfigurationFileSection& cfs)
{
/* Get parameters: */
translateFactor=cfs.retrieveValue<Scalar>("./translateFactor",translateFactor);
translations=cfs.retrieveValue<Misc::FixedArray<Vector,3> >("./translationVectors",translations);
rotateFactor=cfs.retrieveValue<Scalar>("./rotateFactor",rotateFactor);
rotations=cfs.retrieveValue<Misc::FixedArray<Vector,3> >("./scaledRotationAxes",rotations);
if(cfs.hasTag("./homePosition"))
{
followDisplayCenter=false;
homePosition=cfs.retrieveValue<Point>("./homePosition",homePosition);
}
deviceGlyphType=cfs.retrieveValue<std::string>("./deviceGlyphType",deviceGlyphType);
deviceGlyphMaterial=cfs.retrieveValue<GLMaterial>("./deviceGlyphMaterial",deviceGlyphMaterial);
}
SoundContext::SoundContext(const Misc::ConfigurationFileSection& configFileSection,VruiState* sVruiState)
:vruiState(sVruiState),
#if ALSUPPORT_CONFIG_HAVE_OPENAL
alDevice(0),alContext(0),
#endif
contextData(0),
listener(findListener(configFileSection.retrieveString("./listenerName").c_str())),
speedOfSound(float(getMeterFactor())*343.0f),
dopplerFactor(1.0f),
distanceAttenuationModel(CONSTANT)
{
/* Set sound context parameters from configuration file: */
speedOfSound=configFileSection.retrieveValue<float>("./speedOfSound",speedOfSound);
dopplerFactor=configFileSection.retrieveValue<float>("./dopplerFactor",dopplerFactor);
distanceAttenuationModel=configFileSection.retrieveValue<DistanceAttenuationModel>("./distanceAttenuationModel",distanceAttenuationModel);
#if ALSUPPORT_CONFIG_HAVE_OPENAL
/* Open the OpenAL device: */
std::string alDeviceName=configFileSection.retrieveValue<std::string>("./deviceName","Default");
alDevice=alcOpenDevice(alDeviceName!="Default"?alDeviceName.c_str():0);
if(alDevice==0)
Misc::throwStdErr("SoundContext::SoundContext: Could not open OpenAL sound device \"%s\"",alDeviceName.c_str());
/* Create a list of context attributes: */
ALCint alContextAttributes[9];
ALCint* attPtr=alContextAttributes;
if(configFileSection.hasTag("./mixerFrequency"))
{
*(attPtr++)=ALC_FREQUENCY;
*(attPtr++)=configFileSection.retrieveValue<ALCint>("./mixerFrequency");
}
if(configFileSection.hasTag("./refreshFrequency"))
{
*(attPtr++)=ALC_REFRESH;
*(attPtr++)=configFileSection.retrieveValue<ALCint>("./refreshFrequency");
}
if(configFileSection.hasTag("./numMonoSources"))
{
*(attPtr++)=ALC_MONO_SOURCES;
*(attPtr++)=configFileSection.retrieveValue<ALCint>("./numMonoSources");
}
if(configFileSection.hasTag("./numStereoSources"))
{
*(attPtr++)=ALC_STEREO_SOURCES;
*(attPtr++)=configFileSection.retrieveValue<ALCint>("./numStereoSources");
}
*(attPtr++)=ALC_INVALID;
/* Create an OpenAL context: */
alContext=alcCreateContext(alDevice,alContextAttributes);
if(alContext==0)
{
alcCloseDevice(alDevice);
Misc::throwStdErr("SoundContext::SoundContext: Could not create OpenAL context for sound device %s",alDeviceName.c_str());
}
#endif
/* Create an AL context data object: */
contextData=new ALContextData(101);
/* Initialize the sound context's OpenAL context: */
makeCurrent();
#if ALSUPPORT_CONFIG_HAVE_OPENAL
/* Set global OpenAL parameters: */
alSpeedOfSound(speedOfSound);
alDopplerFactor(dopplerFactor);
switch(distanceAttenuationModel)
{
case CONSTANT:
alDistanceModel(AL_NONE);
break;
case INVERSE:
alDistanceModel(AL_INVERSE_DISTANCE);
break;
case INVERSE_CLAMPED:
alDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
break;
case LINEAR:
alDistanceModel(AL_LINEAR_DISTANCE);
break;
case LINEAR_CLAMPED:
alDistanceModel(AL_LINEAR_DISTANCE_CLAMPED);
break;
case EXPONENTIAL:
alDistanceModel(AL_EXPONENT_DISTANCE);
break;
case EXPONENTIAL_CLAMPED:
alDistanceModel(AL_EXPONENT_DISTANCE_CLAMPED);
break;
}
#endif
}
void VideoDevice::configure(const Misc::ConfigurationFileSection& cfg)
{
/* Check which components of the video format are stored in the configuration file section: */
unsigned int frameSize[2]={0,0};
bool haveFrameSize=false;
if(cfg.hasTag("./width")&&cfg.hasTag("./height"))
{
/* Read the requested frame size as width and height: */
frameSize[0]=cfg.retrieveValue<unsigned int>("./width");
frameSize[1]=cfg.retrieveValue<unsigned int>("./height");
haveFrameSize=true;
}
if(cfg.hasTag("./frameSize"))
{
/* Read the requested frame size as a two-element array: */
Misc::CFixedArrayValueCoder<unsigned int,2> valueCoder(frameSize);
cfg.retrieveValueWC<unsigned int*>("./frameSize",valueCoder);
haveFrameSize=true;
}
double frameRate=0.0;
bool haveFrameRate=false;
if(cfg.hasTag("./frameRate"))
{
/* Read the requested frame rate as a double: */
frameRate=cfg.retrieveValue<double>("./frameRate");
haveFrameRate=true;
}
unsigned int pixelFormat=0;
bool havePixelFormat=false;
if(cfg.hasTag("./pixelFormat"))
{
/* Read a pixel format as a FourCC code: */
std::string fourCC=cfg.retrieveValue<std::string>("./pixelFormat");
if(fourCC.size()!=4)
Misc::throwStdErr("Video::VideoDevice::configure: Invalid pixel format code \"%s\"",fourCC.c_str());
/* Convert the FourCC code to a pixel format: */
VideoDataFormat temp;
temp.setPixelFormat(fourCC.c_str());
pixelFormat=temp.pixelFormat;
havePixelFormat=true;
}
if(cfg.hasTag("./pixelFormatHex"))
{
/* Read a pixel format as a hexadecimal number: */
std::string hex=cfg.retrieveString("./pixelFormatHex");
if(hex.size()!=8)
Misc::throwStdErr("Video::VideoDevice::configure: Invalid hexadecimal pixel format code \"%s\"",hex.c_str());
for(int i=0;i<8;++i)
{
if(hex[i]>='0'&&hex[i]<='9')
pixelFormat=(pixelFormat<<4)|(hex[i]-'0');
else if(hex[i]>='A'&&hex[i]<='F')
pixelFormat=(pixelFormat<<4)|(hex[i]-'A'+10);
else if(hex[i]>='a'&&hex[i]<='f')
pixelFormat=(pixelFormat<<4)|(hex[i]-'a'+10);
else
Misc::throwStdErr("Video::VideoDevice::configure: Invalid hexadecimal pixel format code \"%s\"",hex.c_str());
}
havePixelFormat=true;
}
/* Get the list of the device's supported video formats: */
std::vector<VideoDataFormat> deviceFormats=getVideoFormatList();
/* Find the best-matching video format among the device's advertised formats: */
std::vector<VideoDataFormat>::iterator bestFormat=deviceFormats.end();
double bestMatch=0.0;
for(std::vector<VideoDataFormat>::iterator dfIt=deviceFormats.begin();dfIt!=deviceFormats.end();++dfIt)
{
double match=1.0;
if(haveFrameSize)
for(int i=0;i<2;++i)
match*=dfIt->size[i]>=frameSize[i]?double(frameSize[i])/double(dfIt->size[i]):double(dfIt->size[i])/double(frameSize[i]);
if(haveFrameRate)
{
double dfRate=double(dfIt->frameIntervalDenominator)/double(dfIt->frameIntervalCounter);
match*=dfRate>=frameRate?frameRate/dfRate:dfRate/frameRate;
}
if(havePixelFormat&&dfIt->pixelFormat!=pixelFormat)
match*=0.75;
if(bestMatch<match)
{
bestFormat=dfIt;
bestMatch=match;
}
}
if(bestFormat==deviceFormats.end()) // Can only happen if there are no device formats
throw std::runtime_error("Video::VideoDevice::configure: No matching video formats found");
/* Set the selected video format: */
setVideoFormat(*bestFormat);
}