/// <summary>
/// Internal constructor accessed by static methods.
/// </summary>
public PointLoad(Geometry.FdPoint3d point, Geometry.FdVector3d force, LoadCase loadCase, string comment, ForceLoadType type)
{
this.EntityCreated();
this.LoadCase = loadCase.Guid;
this.Comment = comment;
this.LoadType = type;
this.Direction = force.Normalize();
this.Load = new LoadLocationValue(point, force.Length());
}
internal void SetStartAndEndForces(Geometry.FdVector3d startForce, Geometry.FdVector3d endForce)
{
if (startForce.IsZero() && !endForce.IsZero())
{
this.Direction = endForce.Normalize();
this.StartLoad = 0;
this.EndLoad = endForce.Length();
}
else if (!startForce.IsZero() && endForce.IsZero())
{
this.Direction = startForce.Normalize();
this.StartLoad = startForce.Length();
this.EndLoad = 0;
}
else if (startForce.IsZero() && endForce.IsZero())
{
throw new System.ArgumentException($"Both StartForce and EndForce are zero vectors. Can't set direction of LineLoad.");
}
// if no zero vectors - check if vectors are parallel
else
{
Geometry.FdVector3d v0 = startForce.Normalize();
Geometry.FdVector3d v1 = endForce.Normalize();
double q0 = startForce.Length();
double q1 = endForce.Length();
int par = v0.Parallel(v1);
if (par != 0)
{
this.Direction = v0;
this.StartLoad = q0;
this.EndLoad = par * q1;
}
else
{
throw new System.ArgumentException($"StartForce and EndForce must be parallel or antiparallel.");
}
}
}
/// <summary>
/// Uniform surface load
/// </summary>
/// <param name="region"></param>
/// <param name="load"></param>
/// <param name="loadCase"></param>
/// <param name="loadProjection">False: Intensity meant along action line (eg. dead load). True: Intensity meant perpendicular to direction of load (eg. snow load).</param>
/// <param name="comment"></param>
public SurfaceLoad(Geometry.Region region, Geometry.FdVector3d load, LoadCase loadCase, bool loadProjection = false, string comment = "") : this(region, new List <LoadLocationValue> {
new LoadLocationValue(region.Contours[0].Edges[0].Points[0], load.Length())
}, load.Normalize(), loadCase, loadProjection, comment)
{
}