private static Plane GetPlaneFromCurve(Curve c, bool planarOnly)
{
//cases to handle
//straight line - normal will be inconclusive
//find the plane of the curve and generate a sketch plane
double period = c.IsBound ? 0.0 : (c.IsCyclic ? c.Period : 1.0);
var p0 = c.IsBound ? c.Evaluate(0.0, true) : c.Evaluate(0.0, false);
var p1 = c.IsBound ? c.Evaluate(0.5, true) : c.Evaluate(0.25 * period, false);
var p2 = c.IsBound ? c.Evaluate(1.0, true) : c.Evaluate(0.5 * period, false);
if (c is Line)
{
var v1 = p1 - p0;
var v2 = p2 - p0;
XYZ norm = null;
//keep old plane computations
if (System.Math.Abs(p0.Z - p2.Z) < 0.0001)
{
norm = XYZ.BasisZ;
}
else
{
var p3 = new XYZ(p2.X, p2.Y, p0.Z);
var v3 = p3 - p0;
norm = v1.CrossProduct(v3);
if (norm.IsZeroLength())
{
norm = v2.CrossProduct(XYZ.BasisY);
}
norm = norm.Normalize();
}
return(new Plane(norm, p0));
}
Autodesk.Revit.DB.CurveLoop cLoop = new Autodesk.Revit.DB.CurveLoop();
cLoop.Append(c.Clone());
if (cLoop.HasPlane())
{
return(cLoop.GetPlane());
}
if (planarOnly)
{
return(null);
}
IList <XYZ> points = c.Tessellate();
List <XYZ> xyzs = new List <XYZ>();
for (int iPoint = 0; iPoint < points.Count; iPoint++)
{
xyzs.Add(points[iPoint]);
}
XYZ meanPt;
List <XYZ> orderedEigenvectors;
PrincipalComponentsAnalysis(xyzs, out meanPt, out orderedEigenvectors);
var normal = orderedEigenvectors[0].CrossProduct(orderedEigenvectors[1]);
var plane = Document.Application.Create.NewPlane(normal, meanPt);
return(plane);
}
private static Plane GetPlaneFromCurve(Curve c, bool planarOnly)
{
//cases to handle
//straight line - normal will be inconclusive
//find the plane of the curve and generate a sketch plane
double period = c.IsBound ? 0.0 : (c.IsCyclic ? c.Period : 1.0);
var p0 = c.IsBound ? c.Evaluate(0.0, true) : c.Evaluate(0.0, false);
var p1 = c.IsBound ? c.Evaluate(0.5, true) : c.Evaluate(0.25 * period, false);
var p2 = c.IsBound ? c.Evaluate(1.0, true) : c.Evaluate(0.5 * period, false);
if (c is Line)
{
var v1 = p1 - p0;
var v2 = p2 - p0;
XYZ norm = null;
//keep old plane computations
if (System.Math.Abs(p0.Z - p2.Z) < 0.0001)
{
norm = XYZ.BasisZ;
}
else
{
var p3 = new XYZ(p2.X, p2.Y, p0.Z);
var v3 = p3 - p0;
norm = v1.CrossProduct(v3);
if (norm.IsZeroLength())
{
norm = v2.CrossProduct(XYZ.BasisY);
}
norm = norm.Normalize();
}
return new Plane(norm, p0);
}
Autodesk.Revit.DB.CurveLoop cLoop = new Autodesk.Revit.DB.CurveLoop();
cLoop.Append(c.Clone());
if (cLoop.HasPlane())
{
return cLoop.GetPlane();
}
if (planarOnly)
return null;
IList<XYZ> points = c.Tessellate();
List<XYZ> xyzs = new List<XYZ>();
for (int iPoint = 0; iPoint < points.Count; iPoint++)
xyzs.Add(points[iPoint]);
XYZ meanPt;
List<XYZ> orderedEigenvectors;
PrincipalComponentsAnalysis(xyzs, out meanPt, out orderedEigenvectors);
var normal = orderedEigenvectors[0].CrossProduct(orderedEigenvectors[1]);
var plane = Document.Application.Create.NewPlane(normal, meanPt);
return plane;
}
private static Plane GetPlaneFromCurve(Curve c, bool planarOnly)
{
//cases to handle
//straight line - normal will be inconclusive
//find the plane of the curve and generate a sketch plane
double period = c.IsBound ? 0.0 : (c.IsCyclic ? c.Period : 1.0);
var p0 = c.IsBound ? c.Evaluate(0.0, true) : c.Evaluate(0.0, false);
var p1 = c.IsBound ? c.Evaluate(0.5, true) : c.Evaluate(0.25 * period, false);
var p2 = c.IsBound ? c.Evaluate(1.0, true) : c.Evaluate(0.5 * period, false);
if (c is Line)
{
var v1 = p1 - p0;
var v2 = p2 - p0;
XYZ norm = null;
//keep old plane computations
if (System.Math.Abs(p0.Z - p2.Z) < 0.0001)
{
norm = XYZ.BasisZ;
}
else
{
var p3 = new XYZ(p2.X, p2.Y, p0.Z);
var v3 = p3 - p0;
norm = v1.CrossProduct(v3);
if (norm.IsZeroLength())
{
norm = v2.CrossProduct(XYZ.BasisY);
}
norm = norm.Normalize();
}
return new Plane(norm, p0);
}
Autodesk.Revit.DB.CurveLoop cLoop = new Autodesk.Revit.DB.CurveLoop();
cLoop.Append(c.Clone());
if (cLoop.HasPlane())
{
return cLoop.GetPlane();
}
if (planarOnly)
return null;
IList<XYZ> points = c.Tessellate();
List<XYZ> xyzs = new List<XYZ>();
for (int iPoint = 0; iPoint < points.Count; iPoint++)
xyzs.Add(points[iPoint]);
var bestFitPlane =
Autodesk.DesignScript.Geometry.Plane.ByBestFitThroughPoints(xyzs.ToPoints(false));
return bestFitPlane.ToPlane(false);
}