getTempoSection

Tracktion Engine
1

There’s something in Tracktion that gives me the corresponding tempo section that match a specific time or a specific beat? something like “getTempoSection( double atBeat)” “getTempoSection(double atTime)”?

I wrote this but I think it could be write better from Tracktion programmers and it should be a great idea to add something like these funcs in framework:

TempoSequence::SectionDetails getMatchingTempoSection(int const beat) const 
    {
        auto sections = edit.tempoSequence.getTempoSections();
        TempoSequence::SectionDetails section;
        for (int i = 0; i < sections.size(); ++i)
        {
            if (sections.getReference(i).startBeatInEdit > beat) { break; }
            section = sections.getReference(i);
        }
        return section;
    }
2

What info do you actually need? Usually you’d use TempoSequence::getTempoAtBeat and then use the TempoSetting for the relevant info.

Or you’d use a TempoSequencePosition, set it to the appropriate time and use getCurrentTempo on it to get the section details.

1 Like
3

I’m trying to get corresponding absolutepixel in a timeline from a certain time (but in my case I need to take care about various tempos in tempo sequence because playhead has not constant velocity as for example in cubase timeline)

4

That must mean you have constant beats then?

So if you know the beat at the left of the screen, and the beat at the right, you can use a beat within them to find the pixel?