/// <summary>
/// Create a column.
/// </summary>
/// <param name="curve">The curve which defines the center line of the column.</param>
/// <param name="level">The level with which you'd like the column to be associated.</param>
/// <param name="structuralColumnType">The structural column type representing the column.</param>
/// <returns></returns>
public static StructuralFraming ColumnByCurve(
Autodesk.DesignScript.Geometry.Curve curve, Revit.Elements.Level level, Revit.Elements.FamilySymbol structuralColumnType)
{
if (curve == null)
{
throw new System.ArgumentNullException("curve");
}
if (level == null)
{
throw new System.ArgumentNullException("level");
}
if (structuralColumnType == null)
{
throw new System.ArgumentNullException("structuralColumnType");
}
var start = curve.PointAtParameter(0);
var end = curve.PointAtParameter(1);
// Revit will throw an exception if you attempt to create a column whose
// base is above its top.
if (end.Z <= start.Z)
{
throw new Exception("The end of the curve for creating a column should be above the start of the curve.");
}
return new StructuralFraming(curve.ToRevitType(), level.InternalLevel, Autodesk.Revit.DB.Structure.StructuralType.Column, structuralColumnType.InternalFamilySymbol);
}
/// <summary>
/// Convert a generic Circle to a Revit Curve
/// </summary>
/// <param name="crvCurve"></param>
/// <returns></returns>
private static Autodesk.Revit.DB.Curve Convert(Autodesk.DesignScript.Geometry.Curve crvCurve)
{
Autodesk.DesignScript.Geometry.Curve[] curves = crvCurve.ApproximateWithArcAndLineSegments();
if (curves.Length == 1)
{
//line or arc?
var point0 = crvCurve.PointAtParameter(0.0);
var point1 = crvCurve.PointAtParameter(1.0);
var pointMid = crvCurve.PointAtParameter(0.5);
if (point0.DistanceTo(point1) > 1e-7)
{
var line = Autodesk.DesignScript.Geometry.Line.ByStartPointEndPoint(point0, point1);
if (pointMid.DistanceTo(line) < 1e-7)
return Convert(line);
}
//then arc
if (point0.DistanceTo(point1) < 1e-7)
point1 = crvCurve.PointAtParameter(0.9);
var arc = Autodesk.DesignScript.Geometry.Arc.ByThreePoints(point0, pointMid, point1);
return Convert(arc);
}
return Convert(crvCurve.ToNurbsCurve());
}
/// <summary>
/// Convert a DS Arc to a Revit arc
/// </summary>
/// <param name="arc"></param>
/// <returns></returns>
private static Autodesk.Revit.DB.Arc Convert(Autodesk.DesignScript.Geometry.Arc arc)
{
// convert
var center = arc.CenterPoint.ToXyz();
var sp = arc.StartPoint.ToXyz();
// get the xaxis of the arc base plane
var x = (sp - center).Normalize();
// get a second vector in the plane
var vecY = (arc.PointAtParameter(0.1).ToXyz() - center);
// get the normal to the plane
var n2 = x.CrossProduct(vecY).Normalize();
// obtain the y axis in the plane - perp to x and z
var y = n2.CrossProduct(x);
var plane = new Autodesk.Revit.DB.Plane(x, y, center);
return Autodesk.Revit.DB.Arc.Create(plane, arc.Radius, 0, arc.SweepAngle.ToRadians());
}
private static Autodesk.Revit.DB.Arc Convert(Autodesk.DesignScript.Geometry.Circle circ)
{
// convert
var center = circ.CenterPoint.ToXyz(false);
var sp = circ.StartPoint.ToXyz(false);
// get the xaxis of the arc base plane normalized
var x = (sp - center).Normalize();
// get a second vector in the plane
var vecY = (circ.PointAtParameter(0.1).ToXyz(false) - center);
// get the normal to the plane
var n2 = x.CrossProduct(vecY).Normalize();
// obtain the y axis in the plane - perp to x and z
var y = n2.CrossProduct(x);
var plane = new Autodesk.Revit.DB.Plane(x, y, center);
return Autodesk.Revit.DB.Arc.Create(plane, circ.Radius, 0, 2 * System.Math.PI);
}
