public Scene()
{
DataPoints = new List<PointD>();
TargetBezier = new Bezier();
CurrentBezier = new Bezier();
MinDeviation = double.MaxValue;
}
public static double CalcDeviation(List<PointD> data, Bezier b)
{
double sum = 0.0;
foreach (var p in data)
{
double min_distance = double.MaxValue;
for (double t = 0; t < 1.0; t += sample_interval)
{
double bx = Bezier(b.Point1.X, b.Point2.X, b.Point3.X, b.Point4.X, t), by = Bezier(b.Point1.Y, b.Point2.Y, b.Point3.Y, b.Point4.Y, t), dx = bx - p.X, dy = by - p.Y;
double v = dx * dx + dy * dy;
if (v < min_distance)
{
min_distance = v;
}
}
sum += min_distance;
}
return sum / data.Count;
}
private void DrawBezier(Graphics graphics, Bezier bezier, Pen pen, Brush brush, bool control)
{
graphics.DrawBezier(pen, bezier.Point1.ToPointF(), bezier.Point2.ToPointF(), bezier.Point3.ToPointF(), bezier.Point4.ToPointF());
if (control)
{
graphics.DrawLine(pen, bezier.Point1.ToPointF(), bezier.Point2.ToPointF());
graphics.DrawLine(pen, bezier.Point4.ToPointF(), bezier.Point3.ToPointF());
DrawPoint(graphics, bezier.Point1.X, bezier.Point1.Y, brush);
DrawPoint(graphics, bezier.Point2.X, bezier.Point2.Y, brush);
DrawPoint(graphics, bezier.Point3.X, bezier.Point3.Y, brush);
DrawPoint(graphics, bezier.Point4.X, bezier.Point4.Y, brush);
}
}
