private static bool IsCubicChordMonotone(Point[] controlPoints, double squaredTolerance)
{
double num = GeometryHelper.SquaredDistance(controlPoints[0], controlPoints[3]);
if (num <= squaredTolerance)
{
return(false);
}
Vector lhs = controlPoints[3].Subtract(controlPoints[0]);
Vector rhs = controlPoints[1].Subtract(controlPoints[0]);
double num2 = GeometryHelper.Dot(lhs, rhs);
if ((num2 < 0.0) || (num2 > num))
{
return(false);
}
Vector vector3 = controlPoints[2].Subtract(controlPoints[0]);
double num3 = GeometryHelper.Dot(lhs, vector3);
if ((num3 < 0.0) || (num3 > num))
{
return(false);
}
if (num2 > num3)
{
return(false);
}
return(true);
}
internal static void FlattenFigure(PathFigure figure, IList <Point> points, double tolerance,
bool removeRepeat)
{
if (figure == null)
{
throw new ArgumentNullException(nameof(figure));
}
if (points == null)
{
throw new ArgumentNullException(nameof(points));
}
if (tolerance < 0.0)
{
throw new ArgumentOutOfRangeException(nameof(tolerance));
}
var list = removeRepeat ? new List <Point>() : points;
list.Add(figure.StartPoint);
foreach (var data in figure.AllSegments())
{
data.PathSegment.FlattenSegment(list, data.StartPoint, tolerance);
}
if (figure.IsClosed)
{
list.Add(figure.StartPoint);
}
if (removeRepeat && list.Count > 0)
{
points.Add(list[0]);
for (var i = 1; i < list.Count; i++)
{
if (!MathHelper.IsVerySmall(GeometryHelper.SquaredDistance(points.Last(), list[i])))
{
points.Add(list[i]);
}
}
}
}
