/// <summary>
/// Vykreslí přímou linku nebo S křivku { Prev.End to Next.Begin }
/// </summary>
/// <param name="e">Data pro kreslení</param>
/// <param name="mode">Důvody zobrazení</param>
/// <param name="ratio">Poměr průhlednosti: hodnota v rozsahu 0.0 (neviditelná) - 1.0 (plná barva)</param>
protected void DrawPrevNext(GInteractiveDrawArgs e, TimeGraphLinkMode mode, float ratio)
{
TimeGraph graph = (this.ItemNext != null ? this.ItemNext.Graph : (this.ItemPrev != null ? this.ItemPrev.Graph : null));
RelationState relationState = GetRelationState(this.ItemPrev, this.ItemNext);
Color color1 = this.GetColorForState(relationState, graph);
Point?prevPoint = GetPoint(this.ItemPrev, RectangleSide.MiddleRight, true, true);
Point?nextPoint = GetPoint(this.ItemNext, RectangleSide.MiddleLeft, true, true);
LinkLineType lineType = this.CurrentLineShape;
float? treshold = 4f * (float)(this.LinkWidth.HasValue ? this.LinkWidth.Value : 3);
using (System.Drawing.Drawing2D.GraphicsPath graphicsPath = Painter.CreatePathLink(lineType, prevPoint, nextPoint, treshold))
{
bool useRoundAnchor = (lineType == LinkLineType.ZigZagHorizontal || lineType == LinkLineType.ZigZagVertical || lineType == LinkLineType.ZigZagOptimal);
System.Drawing.Drawing2D.LineCap startCap = (useRoundAnchor ? System.Drawing.Drawing2D.LineCap.RoundAnchor : System.Drawing.Drawing2D.LineCap.Round);
System.Drawing.Drawing2D.LineCap endCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
Painter.DrawLinkPath(e.Graphics, graphicsPath, color1, null, this.LinkWidth, startCap, endCap, ratio);
}
}
/// <summary>
/// Určí aktuálně platný tvar čáry <see cref="CurrentLineShape"/> podle hodnoty v datech <see cref="LineShape"/>, a pokud není zadáno pak vezme defaultní (parametr).
/// </summary>
/// <param name="defaultLineType">Výchozí tvar křivky dle konfigurace</param>
internal void PrepareCurrentLine(LinkLineType defaultLineType)
{
this.CurrentLineShape = this.LineShape ?? defaultLineType;
}
