public spline_ctrl_impl(T x1, T y1, T x2, T y2,
uint num_pnt)
: base(x1, y1, x2, y2)
{
m_curve_pnt = new PathStorage <T>();
m_curve_poly = new ConvStroke <T>(m_curve_pnt);
m_ellipse = new Ellipse <T>();
m_num_pnt = (num_pnt);
m_border_width = M.One <T>();
m_border_extra = M.Zero <T>();
m_curve_width = M.One <T>();
m_point_size = M.New <T>(3.0);
m_curve_poly = new ConvStroke <T>(m_curve_pnt);
m_idx = (0);
m_vertex = (0);
m_active_pnt = (-1);
m_move_pnt = (-1);
m_pdx = M.Zero <T>();
m_pdy = M.Zero <T>();
if (m_num_pnt < 4)
{
m_num_pnt = 4;
}
if (m_num_pnt > 32)
{
m_num_pnt = 32;
}
for (int i = 0; i < m_num_pnt; i++)
{
m_xp[i] = M.New <T>(i).Divide(m_num_pnt - 1);
m_yp[i] = M.New <T>(0.5);
}
calc_spline_box();
update_spline();
{
m_spline.Init((int)m_num_pnt, m_xp, m_yp);
for (int i = 0; i < 256; i++)
{
m_spline_values[i] = m_spline.Get(M.New <T>(i).Divide(255.0));
if (m_spline_values[i].LessThan(0.0))
{
m_spline_values[i] = M.Zero <T>();
}
if (m_spline_values[i].GreaterThan(1.0))
{
m_spline_values[i] = M.One <T>();
}
m_spline_values8[i] = (byte)(m_spline_values[i].ToDouble() * 255.0);
}
}
}
public T y(T x)
{
if (x.LessThan(0.0))
{
x = M.Zero <T>();
}
if (x.GreaterThan(1.0))
{
x = M.One <T>();
}
T val = m_spline.Get(x);
if (val.LessThan(0.0))
{
val = M.Zero <T>();
}
if (val.GreaterThan(1.0))
{
val = M.One <T>();
}
return(val);
}