public void EllipseArc_Basic()
{
var o = Point.ByCoordinates(1, 2, 3);
var n = Vector.ByCoordinates(2, 3, 4, true);
var pl = Autodesk.DesignScript.Geometry.Plane.ByOriginNormal(o, n);
var ellipseArc = EllipseArc.ByPlaneRadiiStartAngleSweepAngle(pl, 10, 5, 45, 90);
var revitCurve = ellipseArc.ToRevitType(false);
Assert.NotNull(revitCurve);
Assert.IsAssignableFrom <Autodesk.Revit.DB.Ellipse>(revitCurve);
var revitEllipse = (Autodesk.Revit.DB.Ellipse)revitCurve;
revitEllipse.GetEndParameter(0).ToDegrees().ShouldBeApproximately(ellipseArc.StartAngle);
revitEllipse.GetEndParameter(1).ToDegrees().ShouldBeApproximately(ellipseArc.StartAngle + ellipseArc.SweepAngle);
revitEllipse.GetEndPoint(0).ShouldBeApproximately(ellipseArc.StartPoint);
revitEllipse.GetEndPoint(1).ShouldBeApproximately(ellipseArc.EndPoint);
revitEllipse.Length.ShouldBeApproximately(ellipseArc.Length);
// ClosestPointTo fails in ProtoGeometry
var tessPts = revitEllipse.Tessellate().Select(x => x.ToPoint(false));
//assert the tesselation is very close to original curve
foreach (var pt in tessPts)
{
var closestPt = ellipseArc.ClosestPointTo(pt);
Assert.Less(closestPt.DistanceTo(pt), 1e-6);
}
}
private static Autodesk.DesignScript.Geometry.Curve Convert(Autodesk.Revit.DB.Ellipse crv)
{
var isFullEllipse = !crv.IsBound ||
Math.Abs(Math.Abs(crv.GetEndParameter(1) - crv.GetEndParameter(0)) - 2 * Math.PI) < 1e-6;
if (isFullEllipse)
{
return
(Autodesk.DesignScript.Geometry.Ellipse.ByOriginVectors(
crv.Center.ToPoint(false),
(crv.XDirection * crv.RadiusX).ToVector(false),
(crv.YDirection * crv.RadiusY).ToVector(false)));
}
// We need to define the major and minor axis as the curve
// will be trimmed starting from the major axis (not the xaxis)
var major = Math.Max(crv.RadiusX, crv.RadiusY);
var minor = Math.Min(crv.RadiusX, crv.RadiusY);
Vector majorAxis;
Vector minorAxis;
double startParam;
var span = Math.Abs(crv.GetEndParameter(0) - crv.GetEndParameter(1)).ToDegrees();
if (crv.RadiusX > crv.RadiusY)
{
majorAxis = crv.XDirection.ToVector();
minorAxis = crv.YDirection.ToVector();
startParam = crv.GetEndParameter(0).ToDegrees();
}
else
{
majorAxis = crv.YDirection.ToVector().Reverse();
minorAxis = crv.XDirection.ToVector();
startParam = crv.GetEndParameter(0).ToDegrees() + 90;
}
using (var pl = Plane.ByOriginXAxisYAxis(crv.Center.ToPoint(false), majorAxis, minorAxis))
{
return(EllipseArc.ByPlaneRadiiStartAngleSweepAngle(pl, major, minor, startParam, span));
}
}
private static Autodesk.DesignScript.Geometry.Curve Convert(Autodesk.Revit.DB.Ellipse crv)
{
var isComplete = !crv.IsBound ||
Math.Abs(Math.Abs(crv.GetEndParameter(1) - crv.GetEndParameter(0)) - 2 * Math.PI) < 1e-6;
if (!isComplete)
{
var pl = Plane.ByOriginXAxisYAxis(crv.Center.ToPoint(),
crv.XDirection.ToVector(), crv.YDirection.ToVector());
var s = crv.GetEndParameter(0).ToDegrees();
var e = crv.GetEndParameter(1).ToDegrees();
return(EllipseArc.ByPlaneRadiiStartAngleSweepAngle(pl, crv.RadiusX, crv.RadiusY, s, e - s));
}
return(Autodesk.DesignScript.Geometry.Ellipse.ByOriginVectors(crv.Center.ToPoint(),
(crv.XDirection * crv.RadiusX).ToVector(), (crv.YDirection * crv.RadiusY).ToVector()));
}