void UpdateController(double dt)
{
double dzFactor = Math.Pow(1.02, Math.Min(dt, 1.0));
if (m_near)
{
m_target.distance = m_target.distance / (dzFactor * m_zoomSpeed);
}
else if (m_far)
{
m_target.distance = m_target.distance * dzFactor * m_zoomSpeed;
}
TerrainView.Position p = new TerrainView.Position();
GetPosition(p);
SetPosition(m_target);
if (m_forward)
{
double speed = Math.Max(m_view.GetHeight(), 1.0);
m_view.MoveForward(speed * dt * m_moveSpeed);
}
else if (m_backward)
{
double speed = Math.Max(m_view.GetHeight(), 1.0);
m_view.MoveForward(-speed * dt * m_moveSpeed);
}
if (m_left)
{
m_view.Turn(dt * m_turnSpeed);
}
else if (m_right)
{
m_view.Turn(-dt * m_turnSpeed);
}
GetPosition(m_target);
if (m_smooth)
{
double lerp = 1.0 - Math.Exp(-dt * 2.301e-3);
double x0 = 0.0;
double y0 = 0.0;
m_view.InterpolatePos(p.x0, p.y0, m_target.x0, m_target.y0, lerp, ref x0, ref y0);
p.x0 = x0;
p.y0 = y0;
p.theta = Mix2(p.theta, m_target.theta, lerp);
p.phi = Mix2(p.phi, m_target.phi, lerp);
p.distance = Mix2(p.distance, m_target.distance, lerp);
SetPosition(p);
}
else
{
SetPosition(m_target);
}
}
