/// <summary>
/// The method is used to create alignment between two faces
/// </summary>
/// <param name="view">the view</param>
/// <param name="face1">face1</param>
/// <param name="face2">face2</param>
public void AddAlignment(View view, Face face1, Face face2)
{
PlanarFace pFace1 = null;
PlanarFace pFace2 = null;
if (face1 is PlanarFace)
{
pFace1 = face1 as PlanarFace;
}
if (face2 is PlanarFace)
{
pFace2 = face2 as PlanarFace;
}
if (pFace1 != null && pFace2 != null)
{
SubTransaction subTransaction = new SubTransaction(m_document);
subTransaction.Start();
m_familyCreator.NewAlignment(view, pFace1.Reference, pFace2.Reference);
subTransaction.Commit();
}
}
/// <summary>
/// Example demonstrating truss creation in the Autodesk Revit API. This example constructs
/// a "mono" truss aligned with the reference planes in the (already loaded) truss family
/// document.
/// </summary>
private void MakeNewTruss()
{
// Constants for arranging the angular truss members
double webAngle = 35.0;
double webAngleRadians = (180 - webAngle) * Math.PI / 180.0;
Autodesk.Revit.DB.XYZ angleDirection = new Autodesk.Revit.DB.XYZ(Math.Cos(webAngleRadians), Math.Sin(webAngleRadians), 0);
// Look up the reference planes and view in which to sketch
ReferencePlane top = null, bottom = null, left = null, right = null, center = null;
View level1 = null;
List <Autodesk.Revit.DB.Element> elements = new List <Autodesk.Revit.DB.Element>();
ElementClassFilter refPlaneFilter = new ElementClassFilter(typeof(ReferencePlane));
ElementClassFilter viewFilter = new ElementClassFilter(typeof(View));
LogicalOrFilter filter = new LogicalOrFilter(refPlaneFilter, viewFilter);
FilteredElementCollector collector = new FilteredElementCollector(m_document);
elements.AddRange(collector.WherePasses(filter).ToElements());
foreach (Element e in elements)
{
// skip view templates because they're invisible invalid for truss creation
View view = e as View;
if (null != view && view.IsTemplate)
{
continue;
}
//
switch (e.Name)
{
case "Top": top = e as ReferencePlane; break;
case "Bottom": bottom = e as ReferencePlane; break;
case "Right": right = e as ReferencePlane; break;
case "Left": left = e as ReferencePlane; break;
case "Center": center = e as ReferencePlane; break;
case "Level 1": level1 = e as View; break;
}
}
if (top == null || bottom == null || left == null ||
right == null || center == null || level1 == null)
{
throw new InvalidOperationException("Could not find prerequisite named reference plane or named view.");
}
SketchPlane sPlane = level1.SketchPlane;
// Extract the geometry of each reference plane
Line bottomLine = GetReferencePlaneLine(bottom);
Line leftLine = GetReferencePlaneLine(left);
Line rightLine = GetReferencePlaneLine(right);
Line topLine = GetReferencePlaneLine(top);
Line centerLine = GetReferencePlaneLine(center);
// Create bottom chord along "bottom" from "left" to "right"
Autodesk.Revit.DB.XYZ bottomLeft = GetIntersection(bottomLine, leftLine);
Autodesk.Revit.DB.XYZ bottomRight = GetIntersection(bottomLine, rightLine);
ModelCurve bottomChord = MakeTrussCurve(bottomLeft, bottomRight, sPlane, TrussCurveType.BottomChord);
if (null != bottomChord)
{
// Add the alignment constraint to the bottom chord.
Curve geometryCurve = bottomChord.GeometryCurve;
// Lock the bottom chord to bottom reference plan
m_familyCreator.NewAlignment(level1, bottom.GetReference(), geometryCurve.Reference);
}
// Create web connecting top and bottom chords on the right side
Autodesk.Revit.DB.XYZ topRight = GetIntersection(topLine, rightLine);
ModelCurve rightWeb = MakeTrussCurve(bottomRight, topRight, sPlane, TrussCurveType.Web);
if (null != rightWeb)
{
// Add the alignment constraint to the right web chord.
Curve geometryCurve = rightWeb.GeometryCurve;
// Lock the right web chord to right reference plan
m_familyCreator.NewAlignment(level1, right.GetReference(), geometryCurve.Reference);
}
// Create top chord diagonally from bottom-left to top-right
ModelCurve topChord = MakeTrussCurve(bottomLeft, topRight, sPlane, TrussCurveType.TopChord);
if (null != topChord)
{
// Add the alignment constraint to the top chord.
Curve geometryCurve = topChord.GeometryCurve;
// Lock the start point of top chord to the Intersection of left and bottom reference plan
m_familyCreator.NewAlignment(level1, geometryCurve.GetEndPointReference(0), left.GetReference());
m_familyCreator.NewAlignment(level1, geometryCurve.GetEndPointReference(0), bottom.GetReference());
// Lock the end point of top chord to the Intersection of right and top reference plan
m_familyCreator.NewAlignment(level1, geometryCurve.GetEndPointReference(1), top.GetReference());
m_familyCreator.NewAlignment(level1, geometryCurve.GetEndPointReference(1), right.GetReference());
}
// Create angled web from midpoint to the narrow end of the truss
Autodesk.Revit.DB.XYZ bottomMidPoint = GetIntersection(bottomLine, centerLine);
Line webDirection = Line.CreateUnbound(bottomMidPoint, angleDirection);
Autodesk.Revit.DB.XYZ endOfWeb = GetIntersection(topChord.GeometryCurve as Line, webDirection);
ModelCurve angledWeb = MakeTrussCurve(bottomMidPoint, endOfWeb, sPlane, TrussCurveType.Web);
// Add a dimension to force the angle to be stable even when truss length and height are modified
Arc dimensionArc = Arc.Create(
bottomMidPoint, angledWeb.GeometryCurve.Length / 2, webAngleRadians, Math.PI, Autodesk.Revit.DB.XYZ.BasisX, Autodesk.Revit.DB.XYZ.BasisY);
Dimension createdDim = m_familyCreator.NewAngularDimension(
level1, dimensionArc, angledWeb.GeometryCurve.Reference, bottomChord.GeometryCurve.Reference);
if (null != createdDim)
{
createdDim.IsLocked = true;
}
// Create angled web from corner to top of truss
Autodesk.Revit.DB.XYZ bottomRight2 = GetIntersection(bottomLine, rightLine);
webDirection = Line.CreateUnbound(bottomRight2, angleDirection);
endOfWeb = GetIntersection(topChord.GeometryCurve as Line, webDirection);
ModelCurve angledWeb2 = MakeTrussCurve(bottomRight, endOfWeb, sPlane, TrussCurveType.Web);
// Add a dimension to force the angle to be stable even when truss length and height are modified
dimensionArc = Arc.Create(
bottomRight, angledWeb2.GeometryCurve.Length / 2, webAngleRadians, Math.PI, Autodesk.Revit.DB.XYZ.BasisX, Autodesk.Revit.DB.XYZ.BasisY);
createdDim = m_familyCreator.NewAngularDimension(
level1, dimensionArc, angledWeb2.GeometryCurve.Reference, bottomChord.GeometryCurve.Reference);
if (null != createdDim)
{
createdDim.IsLocked = true;
}
//Connect bottom midpoint to end of the angled web
ModelCurve braceWeb = MakeTrussCurve(bottomMidPoint, endOfWeb, sPlane, TrussCurveType.Web);
}