public static Point GetPoint(PathFigure pathFigure, int index, bool correspondingPoint)
{
if (index == 0)
{
return(pathFigure.StartPoint);
}
PathSegmentCollection segments = pathFigure.Segments;
int segmentIndex;
int segmentPointIndex;
PathFigureUtilities.GetSegmentFromPointIndex(pathFigure, index, out segmentIndex, out segmentPointIndex);
PathSegment segment = segments[segmentIndex];
if (correspondingPoint && segment is BezierSegment)
{
if (segmentPointIndex == 1)
{
segmentPointIndex = 2;
}
else if (segmentPointIndex == 0)
{
if (segmentIndex == 0)
{
return(pathFigure.StartPoint);
}
if (index > 0)
{
PathFigureUtilities.GetSegmentFromPointIndex(pathFigure, index - 1, out segmentIndex, out segmentPointIndex);
segment = segments[segmentIndex];
}
}
}
return(PathSegmentUtilities.GetPoint(segment, segmentPointIndex));
}
public static void SetPoint(PathFigure pathFigure, int pointIndex, Point point)
{
if (pointIndex == 0 || pointIndex == PathFigureUtilities.PointCount(pathFigure) && PathFigureUtilities.IsClosed(pathFigure) && !PathFigureUtilities.IsCloseSegmentDegenerate(pathFigure))
{
pathFigure.StartPoint = point;
}
else
{
PathSegmentCollection segments = pathFigure.Segments;
int segmentIndex;
int segmentPointIndex;
PathFigureUtilities.GetSegmentFromPointIndex(pathFigure, pointIndex, out segmentIndex, out segmentPointIndex);
PathSegmentUtilities.SetPoint(segments[segmentIndex], segmentPointIndex, point);
}
}