I want to place some elements on a wall one after the other.
I am placing a few elements on a wall in my model. I was able to place the first element but have no clue how to place the 2nd and consecutive ones. I have uploaded the source code and image of what I have achieved and what I want to do next. The family is not the hosted one.
public static FamilyInstance PlaceFamily (Wall wall, Family family, Document document)
{
FamilySymbol symbol = null ;
foreach (ElementId s in family.GetFamilySymbolIds())
{
symbol = document.GetElement(s) as FamilySymbol;
break;
}
LocationCurve locationCurve= wall.Location as LocationCurve;
XYZ point= locationCurve.Curve.GetEndPoint(0);
Transaction transaction2 = new Transaction(document, "place Instance");
transaction2.Start();
if (!symbol.IsActive)
symbol.Activate();
FamilyInstance instance = document.Create.NewFamilyInstance(point, symbol, StructuralType.NonStructural);
transaction2.Commit();
return instance;
}
I found my solution. I just needed to find the next location point. Here is how I did it.
XYZ p0 = locationCurveOfWall.Curve.GetEndPoint(0);
XYZ p1 = locationCurveOfWall.Curve.GetEndPoint(1);
XYZ vectorAlongTheWall = new XYZ(p1.X - p0.X, p1.Y - p0.Y, p1.Z - p0.Z);
XYZ normalizeVectorAlongTheWall = vectorAlongTheWall.Normalize();
XYZ oldStartPoint = p0;
int n2 = (int)Math.Round(wallLength / 4); // 4 is the width of the element
Transaction transaction2 = new Transaction(document, "place Instance");
transaction2.Start();
FamilyInstance instance2 = document.Create.NewFamilyInstance(oldStartPoint, symbol, wall, StructuralType.NonStructural);
for (int j = 1; j < n2 - 1; j++)
{
XYZ newStartPoint = new XYZ(oldStartPoint.X + 4 * normalizeVectorAlongTheWall.X, oldStartPoint.Y + 4 * normalizeVectorAlongTheWall.Y, oldStartPoint.Z + 4 * normalizeVectorAlongTheWall.Z);
instance2 = document.Create.NewFamilyInstance(newStartPoint, symbol, wall, StructuralType.NonStructural);
oldStartPoint = newStartPoint;
}
transaction2.Commit();
Please suggest a better way.