oid Javelin::getParticle(int index, int ticks, float & x, float & y)
{
    float dx = vec_dxnorm;
    float dy = vec_dynorm;
    int rad = index % radii;
    int dist = index / radii;

    rad -= radii/2;

    float crossx = -dy;
    float crossy = dx;

    float adx = (float)rad * angle;
    float ady = (float)rad *crossy*sin(ticks/1000.0f);
    adx += dx;
    //ady += dy;


    float cosa = cosf( (float)rad * 3.1415f * 2.0f / radii - sin(ticks/1000.0f));
    float sina = sinf( (float)rad * 3.1415f * 2.0f / radii + sin(ticks/1000.0f));

    float speed = (((float)dist / (float)traces) + 1)/(traces);
    float location = (float)ticks * 100 / 2500;
    //std::cout << "index = " << index << std::endl;
    if (index % 2 == 0)
    {
        x = startx + location * speed *vec_dxnorm*rad;
        y = starty + location * speed *vec_dynorm*rad;
    }
    else
    {
        x = startx + location * speed *vec_dxnorm*rad *sina;
        y = starty + location * speed *vec_dynorm *crossy;
    }

}