105 lines
2.3 KiB
C++
105 lines
2.3 KiB
C++
#include "externals.hh"
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#include "sync.hh"
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const T_SyncVariable T_SyncData::MissingVariable_{ };
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T_SyncData::T_SyncData(
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__rd__ const uint32_t duration ,
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__rd__ const float units ) noexcept
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: duration_( duration ) , units_( units )
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{ }
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T_SyncData::T_VarHelper_::T_VarHelper_(
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__rw__ T_SyncVariable&& v ,
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__rd__ const uint32_t duration ) noexcept
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: variable( std::move( v ) )
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{
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const auto n( variable.size( ) );
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uint32_t s = 0;
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for ( auto i = 0u ; i < n ; i ++ ) {
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auto const& v( variable[ i ] );
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assert( v.nPoints >= 2 );
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assert( v.durations.size( ) == v.nPoints - 1 );
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const auto nd( v.nPoints - 1 );
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for ( auto j = 0u ; j < nd ; j ++ ) {
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segStarts.push_back( s );
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segRefs.push_back( std::make_pair( i , j ) );
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s += v.durations[ j ];
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if ( s > duration ) {
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return;
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}
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}
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}
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}
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void T_SyncData::setSyncVariable(
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__rd__ std::string const& name ,
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__rw__ T_SyncVariable&& variable ) noexcept
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{
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variables_.erase( name );
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if ( !variable.empty( ) ) {
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variables_.emplace( name , T_VarHelper_{ std::move( variable ) , duration_ } );
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}
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}
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T_SyncVariable const& T_SyncData::variable(
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__rd__ std::string const& name ) const noexcept
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{
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auto pos( variables_.find( name ) );
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if ( pos == variables_.end( ) ) {
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return MissingVariable_;
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}
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return pos->second.variable;
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}
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float T_SyncData::valueOf(
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__rd__ std::string const& name ,
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__rd__ const float time ) const noexcept
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{
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assert( time >= 0 );
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auto pos( variables_.find( name ) );
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if ( pos == variables_.end( ) ) {
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return 0;
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}
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// Find segment
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auto const& var( pos->second );
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const uint32_t tu( std::min( duration_ ,
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uint32_t( floor( time / units_ ) ) ) );
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uint32_t s( 0 );
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for ( auto ss : var.segStarts ) {
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if ( ss > tu ) {
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break;
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}
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s ++;
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}
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assert( s > 0 );
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s --;
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const auto sid( var.segRefs[ s ].first );
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auto const& seg( var.variable[ sid ] );
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const auto pid( var.segRefs[ s ].second );
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// Interpolation factor
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const float st( var.segStarts[ s ] * units_ );
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const float et( ( var.segStarts[ s ] + seg.durations[ pid ] ) * units_ );
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const float v0 = ( time - st ) / ( et - st );
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float v = v0;
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if ( seg.type != E_SyncSegment::LINEAR ) {
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v *= v0;
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if ( seg.type == E_SyncSegment::SMOOTH ) {
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v *= 3 - 2 * v0;
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}
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}
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const float sv( seg.values[ pid ] );
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const float ev( seg.values[ pid + 1 ] );
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return v * ( ev - sv ) + sv;
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}
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