template<class W> void
Analyzer::Base<W>::drawFrame()
{
EngineBase *engine = EngineController::engine();
switch( engine->state() )
{
case Engine::Playing:
{
const Engine::Scope &thescope = engine->scope();
static Analyzer::Scope scope( 512 );
for( uint x = 0; (int)x < m_fht->size(); ++x ) scope[x] = double(thescope[x]) / (1<<15);
transform( scope );
analyze( scope );
scope.resize( m_fht->size() );
break;
}
case Engine::Paused:
paused();
break;
default:
demo();
}
}
void
BlockAnalyzer::transform( Analyzer::Scope &s ) //pure virtual
{
for( uint x = 0; x < s.size(); ++x )
s[x] *= 2;
float *front = static_cast<float*>( &s.front() );
m_fht->spectrum( front );
m_fht->scale( front, 1.0 / 20 );
//the second half is pretty dull, so only show it if the user has a large analyzer
//by setting to m_scope.size() if large we prevent interpolation of large analyzers, this is good!
s.resize( m_scope.size() <= MAX_COLUMNS/2 ? MAX_COLUMNS/2 : m_scope.size() );
}