private void timer1_Tick(object sender, System.EventArgs e)
{
par_anim += par_anim_step;
if (par_anim > par_anim_max)
{
par_anim = par_anim_max;
par_anim_step = -par_anim_step;
}
else if (par_anim < par_anim_min)
{
par_anim = par_anim_min;
par_anim_step = -par_anim_step;
}
if (f_anim != null)
{
double xd = 0, yd = 0;
int x = 0, y = 0;
if (f_anim is YFunction)
{
YFunction yf = (YFunction)f_anim;
xd = par_anim;
yd = yf.GetY(xd);
statusBar1.Text = string.Format(" x={0:g4}", xd);
}
else if (f_anim is ParametricFunction)
{
ParametricFunction pf = (ParametricFunction)f_anim;
xd = pf.GetX(par_anim);
yd = pf.GetY(par_anim);
statusBar1.Text = string.Format(" t={0:g4}", par_anim);
}
Axis xa = c1Chart1.ChartArea.AxisX;
Axis ya = c1Chart1.ChartArea.AxisY;
if (xd >= xa.Min && xd <= xa.Max && yd >= ya.Min && yd <= ya.Max &&
c1Chart1.ChartGroups[0].DataCoordToCoord(xd, yd, ref x, ref y))
{
RedrawChart();
curPosition.X = x; curPosition.Y = y;
RedrawChart();
}
else
{
RedrawChart();
curPosition = Point.Empty;
}
}
}
