Method calcDistanceRatioForPaths

core/src/core/path_simulator.cpp:539–574

}

void PathSimulator::calcDistanceRatioForPaths(const Vector3f& source,
                                              const ProbeBatch& probes,
                                              int* starts,
                                              int* ends,
                                              int numPaths,
                                              const SoundPath* paths,
                                              const float* weights,
                                              float* avgDistanceRatio)
{
    PROFILE_FUNCTION();

    if (!avgDistanceRatio)
        return;

    float ratio = .0f;
    for (auto i = 0; i < numPaths; ++i)
    {
        if (!paths[i].isValid())
            continue;

        float pathRatio = 1.0;

        if (starts[i] >= 0 && ends[i] >= 0)
        {
            Vector3f virtualSource = paths[i].toVirtualSource(probes, source, ends[i]);
            float pathDistance = (virtualSource - probes[ends[i]].influence.center).length();
            float directDistance = (source - probes[ends[i]].influence.center).length();
            pathRatio = (pathDistance > 1.0f && directDistance > 1.0f) ? directDistance / pathDistance : 1.0f;
        }

        ratio += weights[i] * pathRatio;
    }

    // Returns ratio of 1.0 if no valid path is found. Probably should return a large distance ratio instead.
    *avgDistanceRatio = ratio;
}

}