/// <summary>
/// Gets the point and the line about space direction relationship.
/// </summary>
/// <param name="pt"></param>
/// <param name="line"></param>
/// <returns></returns>
public static GeometryPosition GetSpacePosition(this XYZ pt, Line line)
{
var pt1 = line.GetEndPoint(0);
var pt2 = line.GetEndPoint(1);
// Distance Arithmetic: If a point in a line, it meets sum of the distance from the point to each endpoint equal the line length.
var k = pt1.DistanceTo(pt) + pt2.DistanceTo(pt) - pt2.DistanceTo(pt1);
return(NumberUtil.Compare(k) == -1 ? GeometryPosition.Inner : GeometryPosition.Other);
}
/// <summary>
/// Gets the result of whether the line line1 and the line line2 is plane parallel.
/// </summary>
/// <param name="line1"></param>
/// <param name="line2"></param>
/// <returns></returns>
public static bool IsPlaneParallel(this Line line1, Line line2)
{
var p1 = line1.GetEndPoint(0);
var p2 = line1.GetEndPoint(1);
var p3 = line2.GetEndPoint(0);
var p4 = line2.GetEndPoint(1);
line1 = Line.CreateBound(new XYZ(p1.X, p1.Y, 0), new XYZ(p2.X, p2.Y, 0));
line2 = Line.CreateBound(new XYZ(p3.X, p3.Y, 0), new XYZ(p4.X, p4.Y, 0));
return(NumberUtil.Compare(Math.Sin(line1.Direction.AngleTo(line2.Direction))) == 0);
}
/// <summary>
/// Gets the result of space cross of the box.
/// </summary>
/// <param name="doc"></param>
/// <param name="elm1"></param>
/// <param name="elm2"></param>
/// <returns></returns>
public static bool CrossSpaceBox(this Document doc, Element elm1, Element elm2)
{
var box1 = elm1.GetRoundBox(doc);
var box2 = elm2.GetRoundBox(doc);
var cp1 = (box1.Min - box2.Min).CrossProduct(box2.Max - box2.Min);
var cp2 = (box2.Max - box2.Min).CrossProduct(box1.Max - box2.Min);
var cp3 = (box2.Min - box1.Min).CrossProduct(box1.Max - box1.Min);
var cp4 = (box1.Max - box1.Min).CrossProduct(box2.Max - box1.Min);
var f1 = NumberUtil.Compare(cp1.GetDotProduct(cp2)) == 1;
var f2 = NumberUtil.Compare(cp3.GetDotProduct(cp4)) == 1;
return(f1 && f2);
}
/// <summary>
/// Gets the result of plane cross of the box.
/// </summary>
/// <param name="box1"></param>
/// <param name="box2"></param>
/// <returns></returns>
public static bool CrossPlaneBox(this BoundingBoxXYZ box1, BoundingBoxXYZ box2)
{
box1 = box1.GetRoundBox();
box2 = box2.GetRoundBox();
var cp1 = (box1.Min - box2.Min).ToPlanePoint().CrossProduct((box2.Max - box2.Min).ToPlanePoint());
var cp2 = (box2.Max - box2.Min).ToPlanePoint().CrossProduct((box1.Max - box2.Min).ToPlanePoint());
var cp3 = (box2.Min - box1.Min).ToPlanePoint().CrossProduct((box1.Max - box1.Min).ToPlanePoint());
var cp4 = (box1.Max - box1.Min).ToPlanePoint().CrossProduct((box2.Max - box1.Min).ToPlanePoint());
var f1 = NumberUtil.Compare(cp1.GetDotProduct(cp2)) == 1;
var f2 = NumberUtil.Compare(cp3.GetDotProduct(cp4)) == 1;
return(f1 && f2);
}
/// <summary>
/// Gets the result of whether the line line1 and the line line2 is space parallel.
/// </summary>
/// <param name="line1"></param>
/// <param name="line2"></param>
/// <returns></returns>
public static bool IsSpaceParallel(this Line line1, Line line2)
{
return(NumberUtil.Compare(Math.Sin(line1.Direction.AngleTo(line2.Direction))) == 0);
}
