/// <summary>
/// Gets direction of the line segment (Normalized)
/// </summary>
/// <param name="src">Line segment</param>
/// <returns>Direction</returns>
public static WM.Vector3D GetDirection(this ILineSegment3D src)
{
var temp = new WM.Vector3D(src.EndPoint.X - src.StartPoint.X,
src.EndPoint.Y - src.StartPoint.Y,
src.EndPoint.Z - src.StartPoint.Z);
temp.Normalize();
return(temp);
}
/// <summary>
/// Convert the points of segment based on baseGeometry
/// </summary>
/// <param name="matrix">LCS matrix of baseGeometry</param>
/// <param name="baseGeometry">Based on this region, the given segment is modifed</param>
/// <param name="segment">Input segment object</param>
/// <param name="isIndependent">Segment is independent</param>
/// <param name="modifyInput">If true, given segment object is modified. Otherwise prepare new segment object</param>
/// <returns>Segment object which is based on baseGeometry</returns>
public static ISegment3D GetSegmentOnRegion(IMatrix44 matrix, IRegion3D baseGeometry, ISegment3D segment, bool isIndependent = true, bool modifyInput = true)
{
if (baseGeometry == null || segment == null)
{
return(null);
}
if (matrix == null)
{
matrix = GetMatrixPlane(baseGeometry);
}
if (!modifyInput)
{
segment = segment.CloneSegment();
}
ILineSegment3D line = segment as ILineSegment3D;
if (line != null)
{
if (isIndependent)
{
line.StartPoint = GetPointOnRegion(matrix, baseGeometry, line.StartPoint);
}
line.EndPoint = GetPointOnRegion(matrix, baseGeometry, line.EndPoint);
return(line);
}
IArcSegment3D arc = segment as IArcSegment3D;
if (arc != null)
{
if (isIndependent)
{
arc.StartPoint = GetPointOnRegion(matrix, baseGeometry, arc.StartPoint);
}
arc.IntermedPoint = GetPointOnRegion(matrix, baseGeometry, arc.IntermedPoint);
arc.EndPoint = GetPointOnRegion(matrix, baseGeometry, arc.EndPoint);
return(arc);
}
throw new NotSupportedException();
}
/// <summary>
/// Calculates intersection of the plane and line <paramref name="lineSeg"/>
/// </summary>
/// <param name="src">Plane</param>
/// <param name="lineSeg">Line segment</param>
/// <returns></returns>
public static WM.Point3D GetIntersection(this Plane3D src, ILineSegment3D lineSeg)
{
var l = new WM.Vector3D(lineSeg.EndPoint.X - lineSeg.StartPoint.X,
lineSeg.EndPoint.Y - lineSeg.StartPoint.Y,
lineSeg.EndPoint.Z - lineSeg.StartPoint.Z);
l.Normalize();
double d = WM.Vector3D.DotProduct(src.NormalVector, l);
if (d.IsZero())
{
return(new WM.Point3D(double.NaN, double.NaN, double.NaN));
}
WM.Point3D l0 = lineSeg.StartPoint.ToMediaPoint();
double dd = WM.Vector3D.DotProduct((src.PointOnPlane - l0), src.NormalVector) / d;
return(l0 + dd * l);
}
/// <summary>
/// Create a Line segment from another line segment
/// </summary>
/// <param name="source">Source line segment</param>
public LineSegment3D(ILineSegment3D source) :
base(source)
{
Name = (source as ElementBase).Name;
}
public static void Move(ILineSegment3D segment, WM.Vector3D displacement)
{
segment.StartPoint.Add(ref displacement);
segment.EndPoint.Add(ref displacement);
}
