/// <summary>
/// Gets the rectangle, with the first segment being the right segment of the base, and going into counter
/// clockwise direction.
/// </summary>
/// <returns>The list of segments.</returns>
private List <LineSegment> GetRectangle()
{
var coordSys = DataFetcher.GetSectionAlignedCoordsys(this.Component);
var height = DataFetcher.GetBaseHeight(this.Component);
var width = DataFetcher.GetBaseWidth(this.Component);
var radius = DataFetcher.GetRadius(this.Component);
var length = DataFetcher.GetSectionLength(this.Component);
var geometry = new TransitionSectionGeometry(height, width, length, radius, coordSys.Origin, coordSys.AxisX.Cross(coordSys.AxisY));
return(geometry.RectangularSection.OfType <LineSegment>().ToList());
}
/// <summary>
/// Gets the arc representing the circle at the top of the section.
/// </summary>
/// <returns>The arc.</returns>
private Arc GetCircle()
{
var coordSys = DataFetcher.GetSectionAlignedCoordsys(this.Component);
double sectionLength = DataFetcher.GetSectionLength(this.Component);
var normal = coordSys.AxisX.Cross(coordSys.AxisY).GetNormal();
var centerPoint = coordSys.Origin + sectionLength * normal;
double radius = DataFetcher.GetRadius(this.Component);
return(new Arc(centerPoint, coordSys.AxisX, coordSys.AxisY, radius, 2 * Math.PI));
}
/// <summary>
/// Called when any segment has ended a drag.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="eventArgs">Event args.</param>
private void OnDragEnded(object sender, DragEventArgs eventArgs)
{
var centroid = DataFetcher.GetSectionAlignedCoordsys(this.Component).Origin;
var height = 2.0 * Distance.PointToLine(centroid, new Line(this.topHeightHandle.Line));
var width = 2.0 * Distance.PointToLine(centroid, new Line(this.rightWidthHandle.Line));
this.Component.SetAttribute(TransitionSectionPluginPropertyNames.RectangleWidth, width);
this.Component.SetAttribute(TransitionSectionPluginPropertyNames.RectangleHeight, height);
this.Component.Modify();
new Model().CommitChanges();
}
/// <summary>
/// Called when a height segment is being dragged.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="eventArgs">The event args.</param>
private void OnHeightDragOngoing(object sender, DragEventArgs eventArgs)
{
if (!(sender is LineHandle lineHandle))
{
return;
}
var segment = lineHandle.Line;
var centroid = DataFetcher.GetSectionAlignedCoordsys(this.Component).Origin;
var halfHeight = Distance.PointToLine(centroid, new Line(segment));
this.topHeightHandle.Line = PlaceAtDistanceFromPoint(this.topHeightHandle.Line, centroid, halfHeight);
this.bottomHeightHandle.Line = PlaceAtDistanceFromPoint(this.bottomHeightHandle.Line, centroid, halfHeight);
this.Graphics.Clear();
this.DrawRectangle(DataFetcher.GetBaseWidth(this.Component), 2.0 * halfHeight);
}
/// <summary>
/// Draws the preview of the base of the transition section.
/// </summary>
/// <param name="width">Width of the base.</param>
/// <param name="height">Height of the base.</param>
private void DrawRectangle(double width, double height)
{
var coordSys = DataFetcher.GetSectionAlignedCoordsys(this.Component);
var radius = DataFetcher.GetRadius(this.Component);
var length = DataFetcher.GetSectionLength(this.Component);
var geometry = new TransitionSectionGeometry(height, width, length, radius, coordSys.Origin, coordSys.AxisX.Cross(coordSys.AxisY));
var rectangle = geometry.RectangularSection;
foreach (var curve in rectangle)
{
if (curve is LineSegment segment)
{
this.Graphics.DrawLine(segment.StartPoint, segment.EndPoint);
}
else if (curve is Arc arc)
{
this.Graphics.DrawArc(arc);
}
}
}