double ratio = 1 - ((bp->last_time + bp->frequency) - now) / bp->frequency;
if (ratio > 1) ratio = 1;
mi->polygon_count += draw_histogram (mi, ratio);
double ratio = 1 - ((bp->last_time + bp->frequency) - now) / bp->frequency;
if (ratio > 1) ratio = 1;
mi->polygon_count += draw_histogram (mi, ratio);