beam.cpp

#include "beam.h"

void beam_simulate(Beam* beam, BeamData* beam_data, SoundGenerator ps, double frame_sec)
{
    beam_data->dt = frame_sec / beam->num_edges;
    // @note: we actually report one less point, but we use the fact that the last
    // point is repeated into the next batch so that we can more easily do the
    // lerp in the audio thread.
    beam_data->num_points = beam->num_edges;
    beam_data->points = new double[2 * (beam->num_edges + 1)];

    double time = beam->sim_time;
    for(size_t n = 0; n < beam->num_edges; ++n)
    {

        beam_data->points[2 * n + 0] = beam->x;
        beam_data->points[2 * n + 1] = beam->y;

        time += beam_data->dt;
        ps(time, &beam->x, &beam->y);
    }

    beam_data->points[2 * beam->num_edges + 0] = beam->x;
    beam_data->points[2 * beam->num_edges + 1] = beam->y;
    beam->sim_time = time;
}