public static MText GetMText(Polyline pol, Point3d p1, bool t)
{
Vector3d ang = pol.GetFirstDerivative(pol.GetParameterAtPoint(p1));
//scale the vector by 1.5
ang = ang.GetNormal() * 1.5;
//rotate the vector
ang = ang.TransformBy(Matrix3d.Rotation(Math.PI / 2, pol.Normal, Point3d.Origin));
// create a line by substracting and adding the vector to the point (displacing the point
MText dBText = new MText();
dBText.BackgroundFill = true;
dBText.BackgroundScaleFactor = 1.25;
if (t)
{
if (ang.AngleOnPlane(pol.GetPlane()) > Math.PI)
{
dBText.Attachment = AttachmentPoint.BottomCenter;
}
else
{
dBText.Attachment = AttachmentPoint.TopCenter;
}
dBText.Location = p1 - (ang.GetNormal() * 2);
}
else
{
if (ang.AngleOnPlane(pol.GetPlane()) > Math.PI)
{
dBText.Attachment = AttachmentPoint.TopCenter;
}
else
{
dBText.Attachment = AttachmentPoint.BottomCenter;
}
dBText.Location = p1 + (ang.GetNormal() * 2);
}
if (ang.AngleOnPlane(pol.GetPlane()) > (Math.PI / 2) && (ang.AngleOnPlane(pol.GetPlane()) <= Math.PI))
{
dBText.Rotation = ang.AngleOnPlane(pol.GetPlane()) - (Math.PI / 2);
}
else if (ang.AngleOnPlane(pol.GetPlane()) > Math.PI)
{
dBText.Rotation = ang.AngleOnPlane(pol.GetPlane()) + (Math.PI / 2);
}
else
{
dBText.Rotation = (2 * Math.PI) - Math.Abs(ang.AngleOnPlane(pol.GetPlane()) - (Math.PI / 2));
}
return(dBText);
}
/// <summary>Создание дуг</summary>
private void CreateArcs(XElement root, Transaction tr, BlockTableRecord btr)
{
foreach (XElement curveXelement in root.Elements("Arc"))
{
XElement startPointXElement = curveXelement.Element("StartPoint");
Point3d startPoint = startPointXElement.GetAsPoint();
XElement endPointXElement = curveXelement.Element("EndPoint");
Point3d endPoint = endPointXElement.GetAsPoint();
XElement pointOnArcXElement = curveXelement.Element("PointOnArc");
Point3d pointOnArc = pointOnArcXElement.GetAsPoint();
// create a CircularArc3d
CircularArc3d carc = new CircularArc3d(startPoint, pointOnArc, endPoint);
// now convert the CircularArc3d to an Arc
Point3d cpt = carc.Center;
Vector3d normal = carc.Normal;
Vector3d refVec = carc.ReferenceVector;
Plane plan = new Plane(cpt, normal);
double ang = refVec.AngleOnPlane(plan);
using (Arc arc = new Arc(cpt, normal, carc.Radius, carc.StartAngle + ang, carc.EndAngle + ang))
{
btr.AppendEntity(arc);
tr.AddNewlyCreatedDBObject(arc, true);
}
// dispose CircularArc3d
carc.Dispose();
}
}
private static Arc CreateFromCircularArc(CircularArc3d circArc)
{
Point3d center = circArc.Center;
Vector3d normal = circArc.Normal;
Vector3d referenceVector = circArc.ReferenceVector;
Plane plane = new Plane(center, normal);
double num = referenceVector.AngleOnPlane(plane);
return(new Arc(center, normal, circArc.Radius, circArc.StartAngle + num, circArc.EndAngle + num));
}
Matrix3d BendMatrix(Point3d origin, Point3d fromp, Point3d to)
{
Vector3d oldx = fromp.GetAsVector().Subtract(origin.GetAsVector());
Vector3d newx = to.GetAsVector().Subtract(origin.GetAsVector());
Plane xoy = new Plane(Point3d.Origin, Vector3d.XAxis, Vector3d.YAxis);
double angle = newx.AngleOnPlane(xoy) - oldx.AngleOnPlane(xoy);
return(Matrix3d.Rotation(angle, Vector3d.ZAxis, origin));
}
private Arc AlignmentArcToSpeckle(CivilDB.AlignmentSubEntityArc arc)
{
// calculate midpoint of chord as between start and end point
Point2d chordMid = new Point2d((arc.StartPoint.X + arc.EndPoint.X) / 2, (arc.StartPoint.Y + arc.EndPoint.Y) / 2);
// calculate sagitta as radius minus distance between arc center and chord midpoint
var sagitta = arc.Radius - arc.CenterPoint.GetDistanceTo(chordMid);
// get unit vector from arc center to chord mid
var midVector = arc.CenterPoint.GetVectorTo(chordMid);
var unitMidVector = midVector.DivideBy(midVector.Length);
// get midpoint of arc by moving chord mid point the length of the sagitta along mid vector
var midPoint = chordMid.Add(unitMidVector.MultiplyBy(sagitta));
// find arc plane (normal is in clockwise dir)
var center3 = new Point3d(arc.CenterPoint.X, arc.CenterPoint.Y, 0);
Acad.Plane plane = (arc.Clockwise) ? new Acad.Plane(center3, Vector3d.ZAxis.MultiplyBy(-1)) : new Acad.Plane(center3, Vector3d.ZAxis);
// calculate start and end angles
var startVector = new Vector3d(arc.StartPoint.X - center3.X, arc.StartPoint.Y - center3.Y, 0);
var endVector = new Vector3d(arc.EndPoint.X - center3.X, arc.EndPoint.Y - center3.Y, 0);
var startAngle = startVector.AngleOnPlane(plane);
var endAngle = endVector.AngleOnPlane(plane);
// calculate total angle.
// TODO: This needs to be improved with more research into autocad .AngleOnPlane() return values (negative angles, etc).
var totalAngle = (arc.Clockwise) ? System.Math.Abs(endAngle - startAngle) : System.Math.Abs(endAngle - startAngle);
// create arc
var _arc = new Arc(PlaneToSpeckle(plane), arc.Radius, startAngle, endAngle, totalAngle, ModelUnits);
_arc.startPoint = PointToSpeckle(arc.StartPoint);
_arc.endPoint = PointToSpeckle(arc.EndPoint);
_arc.midPoint = PointToSpeckle(midPoint);
_arc.domain = IntervalToSpeckle(new Acad.Interval(0, 1, tolerance));
_arc.length = arc.Length;
return(_arc);
}