/// <summary>
/// Get the swept profile(face) of the host object(family instance)
/// </summary>
/// <param name="solid">the solid reference</param>
/// <returns>the swept profile</returns>
private Face GetSweptProfileFace(Solid solid)
{
// Get a point on the swept profile from all points in solid
Autodesk.Revit.DB.XYZ refPoint = new Autodesk.Revit.DB.XYZ(); // the point on swept profile
foreach (Edge edge in solid.Edges)
{
List <XYZ> points = edge.Tessellate() as List <XYZ>; //get end points of the edge
if (2 != points.Count) // make sure all edges are lines
{
throw new Exception("All edge should be line.");
}
// get two points of the edge. All points in solid should be transform first
Autodesk.Revit.DB.XYZ first = Transform(points[0]); // start point of edge
Autodesk.Revit.DB.XYZ second = Transform(points[1]); // end point of edge
// some edges should be parallelled with the driving line,
// and the start point of that edge should be the wanted point
Autodesk.Revit.DB.XYZ edgeVector = GeomUtil.SubXYZ(second, first);
if (GeomUtil.IsSameDirection(edgeVector, m_drivingVector))
{
refPoint = first;
break;
}
if (GeomUtil.IsOppositeDirection(edgeVector, m_drivingVector))
{
refPoint = second;
break;
}
}
// Find swept profile(face)
Face sweptFace = null; // define the swept face
foreach (Face face in solid.Faces)
{
if (null != sweptFace)
{
break;
}
// the swept face should be perpendicular with the driving line
if (!GeomUtil.IsVertical(face, m_drivingLine, m_transform, null))
{
continue;
}
// use the gotted point to get the swept face
foreach (Autodesk.Revit.DB.XYZ point in face.Triangulate().Vertices)
{
Autodesk.Revit.DB.XYZ pnt = Transform(point); // all points in solid should be transform
if (GeomUtil.IsEqual(refPoint, pnt))
{
sweptFace = face;
break;
}
}
}
return(sweptFace);
}
/// <summary>
/// get the orient of hook accroding to curve direction, rebar normal and hook direction
/// </summary>
/// <param name="curveVec">the curve direction</param>
/// <param name="normal">rebar normal direction</param>
/// <param name="hookVec">the hook direction</param>
/// <returns>the orient of the hook</returns>
public static RebarHookOrientation GetHookOrient(Autodesk.Revit.DB.XYZ curveVec, Autodesk.Revit.DB.XYZ normal, Autodesk.Revit.DB.XYZ hookVec)
{
Autodesk.Revit.DB.XYZ tempVec = normal;
for (int i = 0; i < 4; i++)
{
tempVec = GeomUtil.CrossMatrix(tempVec, curveVec);
if (GeomUtil.IsSameDirection(tempVec, hookVec))
{
if (i == 0)
{
return(RebarHookOrientation.Right);
}
else if (i == 2)
{
return(RebarHookOrientation.Left);
}
}
}
throw new Exception("Can't find the hook orient according to hook direction.");
}