/// <summary>
/// Builds an ellipse from 3 points in space
/// </summary>
private static TopoDSWire BuildEllipse(Point3D center, Point3D secondPoint, Point3D thirdPoint)
{
double minorRadius;
double majorRadius;
bool reversed;
gpDir dirX = null;
gpDir dirY = null;
if (secondPoint.GpPnt.Distance(thirdPoint.GpPnt) < Precision.Confusion)
{
return(null);
}
if (!TreeUtils.ComputeEllipseRadiuses(center, secondPoint, thirdPoint,
out minorRadius, out majorRadius, out reversed,
ref dirX, ref dirY))
{
return(null);
}
// Build a plane from the 3 points
var plane = GeomUtils.BuildPlane(center, secondPoint, thirdPoint);
var ax1 = plane.Axis;
var ax2 = new gpAx2();
ax2.Axis = (ax1);
ax2.Location = (center.GpPnt);
// If major and minor radius are reversed also their directions arereversed
if (!reversed)
{
ax2.XDirection = (dirX);
ax2.YDirection = (dirY);
}
else
{
ax2.XDirection = (dirY);
ax2.YDirection = (dirX);
}
var ellipse = new GeomEllipse(ax2, majorRadius, minorRadius);
var edge = new BRepBuilderAPIMakeEdge(ellipse).Edge;
var wire = new BRepBuilderAPIMakeWire(edge).Wire;
return(wire);
}
public static ComplexGeometry ExecuteStages(Point centerLocation)
{
var finalGeometry = new List <Geometry>();
var pointsList = GeomPoint.CreatePoints();
finalGeometry.Add(pointsList);
var linesList = GeomLine.CreateLines(pointsList);
finalGeometry.Add(linesList);
var ellipse = GeomEllipse.CreateEllipse(linesList);
finalGeometry.Add(ellipse);
var circle = GeomCircle.CreateCircle(ellipse);
finalGeometry.Add(circle);
var boundingBox = GeomBoundingBox.CreateBoundingBox(ellipse);
finalGeometry.Add(boundingBox);
return(finalGeometry);
}
