private void SetAxis(Line2D axis, Vector2D startPoint, Vector2D endPoint)
{
axis.StartPoint = startPoint;
axis.EndPoint = endPoint;
axis.RenderLayer = renderLayer;
axis.Clip(clippingBounds);
}
private void AddPointToEnd(Vector2D point)
{
points.Add(point);
if (points.Count <= 1)
return;
var line = new Line2D(ToQuadratic(points[points.Count - 2], viewport, drawArea),
ToQuadratic(point, viewport, drawArea), Color);
line.Clip(clippingBounds);
lines.Add(line);
}
private void InsertPointAt(Vector2D point, int index)
{
if (index > 0)
MoveLineEndpoint(point, index);
var line = new Line2D(ToQuadratic(point, viewport, drawArea),
ToQuadratic(points[index], viewport, drawArea), Color);
line.Clip(clippingBounds);
lines.Insert(index, line);
points.Insert(index, point);
}