Method tri2

src/extended/PolyBLEPNode.cpp:106–134

    }

    double tri2() const
    {
        double pulseWidth = std::fmax(0.0001, std::fmin(0.9999, this->pulseWidth));

        double t1 = t + 0.5 * pulseWidth;
        t1 -= bitwise_or_zero(t1);

        double t2 = t + 1 - 0.5 * pulseWidth;
        t2 -= bitwise_or_zero(t2);

        double y = t * 2;

        if (y >= 2 - pulseWidth)
        {
            y = (y - 2) / pulseWidth;
        }
        else if (y >= pulseWidth)
        {
            y = 1 - (y - pulseWidth) / (1 - pulseWidth);
        }
        else
        {
            y /= pulseWidth;
        }

        y += freqInSecondsPerSample / (pulseWidth - pulseWidth * pulseWidth) * (blamp(t1, freqInSecondsPerSample) - blamp(t2, freqInSecondsPerSample));

        return amplitude * y;
    }

    double trip() const
    {