/// <summary>
/// Make a line from start point to end point with the direction and style
/// </summary>
/// <param name="startpt">start point</param>
/// <param name="endpt">end point</param>
/// <param name="direction">the direction which decide the plane</param>
/// <param name="style">line style name</param>
public void MakeLine(Autodesk.Revit.DB.XYZ startpt, Autodesk.Revit.DB.XYZ endpt, Autodesk.Revit.DB.XYZ direction, string style)
{
try
{
m_LineCount = m_LineCount + 1;
Line line = m_app.Application.Create.NewLineBound(startpt, endpt);
// Line must lie in the sketch plane. Use the direction of the line to construct a plane that hosts the target line.
XYZ rotatedDirection = XYZ.BasisX;
// If the direction is not vertical, cross the direction vector with Z to get a vector rotated ninety degrees. That vector,
// plus the original vector, form the axes of the sketch plane.
if (!direction.IsAlmostEqualTo(XYZ.BasisZ) && !direction.IsAlmostEqualTo(-XYZ.BasisZ))
{
rotatedDirection = direction.Normalize().CrossProduct(XYZ.BasisZ);
}
Plane geometryPlane = m_app.Application.Create.NewPlane(direction, rotatedDirection, startpt);
SketchPlane skplane = m_app.ActiveUIDocument.Document.Create.NewSketchPlane(geometryPlane);
ModelCurve mcurve = m_app.ActiveUIDocument.Document.Create.NewModelCurve(line, skplane);
m_app.ActiveUIDocument.Document.Regenerate();
ElementArray lsArr = mcurve.LineStyles;
foreach (Autodesk.Revit.DB.Element e in lsArr)
{
if (e.Name == style)
{
mcurve.LineStyle = e;
break;
}
}
m_app.ActiveUIDocument.Document.Regenerate();
}
catch (System.Exception ex)
{
m_outputInfo.Add("Failed to create lines: " + ex.ToString());
}
}
/// <summary>
/// Get an edge from the form by its endpoints
/// </summary>
/// <param name="form">The form contains the edge</param>
/// <param name="startPoint">Start point of the edge</param>
/// <param name="endPoint">End point of the edge</param>
/// <returns>The edge found</returns>
private Edge GetEdgeByEndPoints(Form form, Autodesk.Revit.DB.XYZ startPoint, Autodesk.Revit.DB.XYZ endPoint)
{
Edge edge = null;
// Get all edges of the form
EdgeArray edges = null;
Options geoOptions = m_revitApp.Create.NewGeometryOptions();
geoOptions.ComputeReferences = true;
Autodesk.Revit.DB.GeometryElement geoElement = form.get_Geometry(geoOptions);
foreach (GeometryObject geoObject in geoElement.Objects)
{
Solid solid = geoObject as Solid;
if (null == solid)
{
continue;
}
edges = solid.Edges;
}
// Traverse the edges and look for the edge with the right endpoints
foreach (Edge ed in edges)
{
Autodesk.Revit.DB.XYZ rpPos1 = ed.Evaluate(0);
Autodesk.Revit.DB.XYZ rpPos2 = ed.Evaluate(1);
if ((startPoint.IsAlmostEqualTo(rpPos1) && endPoint.IsAlmostEqualTo(rpPos2)) ||
(startPoint.IsAlmostEqualTo(rpPos2) && endPoint.IsAlmostEqualTo(rpPos1)))
{
edge = ed;
break;
}
}
return(edge);
}
/// <summary>
/// Create a based-line family instance by face
/// </summary>
/// <param name="startP">the start point</param>
/// <param name="endP">the end point</param>
/// <param name="faceIndex">the index of the selected face</param>
/// <param name="familySymbolIndex">the index of the selected family symbol</param>
/// <returns></returns>
public bool CreateLineFamilyInstance(Autodesk.Revit.DB.XYZ startP, Autodesk.Revit.DB.XYZ endP, int faceIndex
, int familySymbolIndex)
{
Face face = m_faceList[faceIndex];
Autodesk.Revit.DB.XYZ projectedStartP = Project(face.Triangulate().Vertices as List <XYZ>, startP);
Autodesk.Revit.DB.XYZ projectedEndP = Project(face.Triangulate().Vertices as List <XYZ>, endP);
if (projectedStartP.IsAlmostEqualTo(projectedEndP))
{
return(false);
}
Line line = Line.CreateBound(projectedStartP, projectedEndP);
if (!m_familySymbolList[familySymbolIndex].IsActive)
{
m_familySymbolList[familySymbolIndex].Activate();
}
FamilyInstance instance = m_revitDoc.Document.Create.NewFamilyInstance(face, line
, m_familySymbolList[familySymbolIndex]);
List <ElementId> instanceId = new List <ElementId>();
instanceId.Add(instance.Id);
m_revitDoc.Selection.SetElementIds(instanceId);
return(true);
}
/// <summary>
/// Compute the angle between two edges
/// </summary>
/// <param name="edgeA">The 1st edge</param>
/// <param name="edgeB">The 2nd edge</param>
/// <returns>The angle of the 2 edges</returns>
private double AngleBetweenEdges(Edge edgeA, Edge edgeB)
{
Autodesk.Revit.DB.XYZ vectorA = null;
Autodesk.Revit.DB.XYZ vectorB = null;
// find coincident vertices
Autodesk.Revit.DB.XYZ A_0 = edgeA.Evaluate(0);
Autodesk.Revit.DB.XYZ A_1 = edgeA.Evaluate(1);
Autodesk.Revit.DB.XYZ B_0 = edgeB.Evaluate(0);
Autodesk.Revit.DB.XYZ B_1 = edgeB.Evaluate(1);
if (A_0.IsAlmostEqualTo(B_0))
{
vectorA = edgeA.ComputeDerivatives(0).BasisX.Normalize();
vectorB = edgeA.ComputeDerivatives(0).BasisX.Normalize();
}
else if (A_0.IsAlmostEqualTo(B_1))
{
vectorA = edgeA.ComputeDerivatives(0).BasisX.Normalize();
vectorB = edgeB.ComputeDerivatives(1).BasisX.Normalize();
}
else if (A_1.IsAlmostEqualTo(B_0))
{
vectorA = edgeA.ComputeDerivatives(1).BasisX.Normalize();
vectorB = edgeB.ComputeDerivatives(0).BasisX.Normalize();
}
else if (A_1.IsAlmostEqualTo(B_1))
{
vectorA = edgeA.ComputeDerivatives(1).BasisX.Normalize();
vectorB = edgeB.ComputeDerivatives(1).BasisX.Normalize();
}
if (A_1.IsAlmostEqualTo(B_0) || A_0.IsAlmostEqualTo(B_1))
{
vectorA = vectorA.Negate();
}
if (null == vectorA || null == vectorB)
{
return(0d);
}
double angle = Math.Acos(vectorA.DotProduct(vectorB));
return(angle);
}
/// <summary>
/// Create a based-line family instance by face
/// </summary>
/// <param name="startP">the start point</param>
/// <param name="endP">the end point</param>
/// <param name="faceIndex">the index of the selected face</param>
/// <param name="familySymbolIndex">the index of the selected family symbol</param>
/// <returns></returns>
public bool CreateLineFamilyInstance(Autodesk.Revit.DB.XYZ startP, Autodesk.Revit.DB.XYZ endP, int faceIndex
, int familySymbolIndex)
{
Face face = m_faceList[faceIndex];
Autodesk.Revit.DB.XYZ projectedStartP = Project(face.Triangulate().Vertices as List <XYZ>, startP);
Autodesk.Revit.DB.XYZ projectedEndP = Project(face.Triangulate().Vertices as List <XYZ>, endP);
if (projectedStartP.IsAlmostEqualTo(projectedEndP))
{
return(false);
}
Line line = m_appCreator.NewLine(projectedStartP, projectedEndP, true);
FamilyInstance instance = m_revitDoc.Document.Create.NewFamilyInstance(face, line
, m_familySymbolList[familySymbolIndex]);
m_revitDoc.Selection.Elements.Clear();
m_revitDoc.Selection.Elements.Add(instance);
return(true);
}
/// <summary>
/// OK button click event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonOK_Click(object sender, EventArgs e)
{
DeleteLines();
if (!UpdateData(false))
{
return;
}
m_outputInfo.Clear();
m_stopWatch.Start();
Transaction transaction = new Transaction(m_doc, "RayTraceBounce");
transaction.Start();
m_LineCount = 0;
m_RayCount = 0;
// Start Find References By Direction
Autodesk.Revit.DB.XYZ startpt = m_origin;
m_outputInfo.Add("Start Find References By Direction: ");
for (int ctr = 1; ctr <= rayLimit; ctr++)
{
ReferenceIntersector referenceIntersector = new ReferenceIntersector(m_view);
IList <ReferenceWithContext> references = referenceIntersector.Find(startpt, m_direction);
m_rClosest = null;
FindClosestReference(references);
if (m_rClosest == null)
{
string info = "Ray " + ctr + " aborted. No closest face reference found. ";
m_outputInfo.Add(info);
if (ctr == 1)
{
TaskDialog.Show("Revit", info);
}
break;
}
else
{
Reference reference = m_rClosest.GetReference();
Element referenceElement = m_doc.GetElement(reference);
GeometryObject referenceObject = referenceElement.GetGeometryObjectFromReference(reference);
Autodesk.Revit.DB.XYZ endpt = reference.GlobalPoint;
if (startpt.IsAlmostEqualTo(endpt))
{
m_outputInfo.Add("Start and end points are equal. Ray " + ctr + " aborted\n" + startpt.X + ", " + startpt.Y + ", " + startpt.Z);
break;
}
else
{
MakeLine(startpt, endpt, m_direction, "bounce");
m_RayCount = m_RayCount + 1;
string info = "Intersected Element Type: [" + referenceElement.GetType().ToString() + "] ElementId: [" + referenceElement.Id.IntegerValue.ToString();
m_face = referenceObject as Face;
if (m_face.MaterialElementId != ElementId.InvalidElementId)
{
Material materialElement = m_doc.GetElement(m_face.MaterialElementId) as Material;
info += "] Face MaterialElement Name: [" + materialElement.Name + "] Shininess: [" + materialElement.Shininess;
}
else
{
info += "] Face.MaterialElement is null [" + referenceElement.Category.Name;
}
info += "]";
m_outputInfo.Add(info);
Autodesk.Revit.DB.UV endptUV = reference.UVPoint;
Autodesk.Revit.DB.XYZ FaceNormal = m_face.ComputeDerivatives(endptUV).BasisZ; // face normal where ray hits
FaceNormal = m_rClosest.GetInstanceTransform().OfVector(FaceNormal); // transformation to get it in terms of document coordinates instead of the parent symbol
Autodesk.Revit.DB.XYZ directionMirrored = m_direction - 2 * m_direction.DotProduct(FaceNormal) * FaceNormal; //http://www.fvastro.org/presentations/ray_tracing.htm
m_direction = directionMirrored; // get ready to shoot the next ray
startpt = endpt;
}
}
}
transaction.Commit();
m_stopWatch.Stop();
TimeSpan ts = m_stopWatch.Elapsed;
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10);
m_outputInfo.Add(elapsedTime + "\n" + "Lines = " + m_LineCount + "\n" + "Rays = " + m_RayCount);
m_stopWatch.Reset();
OutputInformation();
}
/// <summary>
/// This method will find out a route to avoid the obstruction.
/// </summary>
/// <param name="pipe">Pipe to resolve</param>
/// <param name="section">Pipe's one obstruction</param>
/// <returns>A route which can avoid the obstruction</returns>
private Line FindRoute(Pipe pipe, Section section)
{
// Perpendicular direction minimal length.
double minLength = pipe.Diameter * 2;
// Parallel direction jump step.
double jumpStep = pipe.Diameter;
// Calculate the directions in which to find the solution.
List <Autodesk.Revit.DB.XYZ> dirs = new List <Autodesk.Revit.DB.XYZ>();
Autodesk.Revit.DB.XYZ crossDir = null;
foreach (ReferenceWithContext gref in section.Refs)
{
Element elem = m_rvtDoc.GetElement(gref.GetReference());
Line locationLine = (elem.Location as LocationCurve).Curve as Line;
Autodesk.Revit.DB.XYZ refDir = locationLine.GetEndPoint(1) - locationLine.GetEndPoint(0);
refDir = refDir.Normalize();
if (refDir.IsAlmostEqualTo(section.PipeCenterLineDirection) || refDir.IsAlmostEqualTo(-section.PipeCenterLineDirection))
{
continue;
}
crossDir = refDir.CrossProduct(section.PipeCenterLineDirection);
dirs.Add(crossDir.Normalize());
break;
}
// When all the obstruction are parallel with the centerline of the pipe,
// We can't calculate the direction from the vector.Cross method.
if (dirs.Count == 0)
{
// Calculate perpendicular directions with dir in four directions.
List <Autodesk.Revit.DB.XYZ> perDirs = PerpendicularDirs(section.PipeCenterLineDirection, 4);
dirs.Add(perDirs[0]);
dirs.Add(perDirs[1]);
}
Line foundLine = null;
while (null == foundLine)
{
// Extend the section interval by jumpStep.
section.Inflate(0, jumpStep);
section.Inflate(1, jumpStep);
// Find solution in the given directions.
for (int i = 0; null == foundLine && i < dirs.Count; i++)
{
// Calculate the intersections.
List <ReferenceWithContext> obs1 = m_detector.Obstructions(section.Start, dirs[i]);
List <ReferenceWithContext> obs2 = m_detector.Obstructions(section.End, dirs[i]);
// Filter out the intersection result.
Filter(pipe, obs1);
Filter(pipe, obs2);
// Find out the minimal intersections in two opposite direction.
ReferenceWithContext[] mins1 = GetClosestSectionsToOrigin(obs1);
ReferenceWithContext[] mins2 = GetClosestSectionsToOrigin(obs2);
// Find solution in the given direction and its opposite direction.
for (int j = 0; null == foundLine && j < 2; j++)
{
if (mins1[j] != null && Math.Abs(mins1[j].Proximity) < minLength ||
mins2[j] != null && Math.Abs(mins2[j].Proximity) < minLength)
{
continue;
}
// Calculate the maximal height that the parallel line can be reached.
double maxHight = 1000 * pipe.Diameter;
if (mins1[j] != null && mins2[j] != null)
{
maxHight = Math.Min(Math.Abs(mins1[j].Proximity), Math.Abs(mins2[j].Proximity));
}
else if (mins1[j] != null)
{
maxHight = Math.Abs(mins1[j].Proximity);
}
else if (mins2[j] != null)
{
maxHight = Math.Abs(mins2[j].Proximity);
}
Autodesk.Revit.DB.XYZ dir = (j == 1) ? dirs[i] : -dirs[i];
// Calculate the parallel line which can avoid obstructions.
foundLine = FindParallelLine(pipe, section, dir, maxHight);
}
}
}
return(foundLine);
}
