public static void MoveToAttachment(this Transaction acTrans, Entity acEnt,
Enums.AttachmentPoint attachmentPoint, Point3d initPoint, double xOffset = 0, double yOffset = 0)
{
var ext = acEnt.GeometricExtents;
var extMin = ext.MinPoint;
var extMax = ext.MaxPoint;
var fromPoint = new Point3d();
switch (attachmentPoint)
{
case Enums.AttachmentPoint.TopLeft:
fromPoint = new Point3d(extMin.X - xOffset, extMax.Y + yOffset, 0);
break;
case Enums.AttachmentPoint.TopRight:
fromPoint = new Point3d(extMax.X + xOffset, extMax.Y + yOffset, 0);
break;
case Enums.AttachmentPoint.BottomLeft:
fromPoint = new Point3d(extMin.X - xOffset, extMin.Y - yOffset, 0);
break;
case Enums.AttachmentPoint.BottomRight:
fromPoint = new Point3d(extMax.X + xOffset, extMin.Y - yOffset, 0);
break;
case Enums.AttachmentPoint.TopCenter:
var leftTc = new Point3d(extMin.X, extMax.Y + yOffset, 0);
var rightTc = new Point3d(extMax.X, extMax.Y + yOffset, 0);
fromPoint = leftTc.GetMidPoint(rightTc);
break;
case Enums.AttachmentPoint.BottomCenter:
var leftBc = new Point3d(extMin.X, extMin.Y - yOffset, 0);
var rightBc = new Point3d(extMax.X, extMin.Y - yOffset, 0);
fromPoint = leftBc.GetMidPoint(rightBc);
break;
case Enums.AttachmentPoint.LeftCenter:
var botLc = new Point3d(extMin.X - xOffset, extMin.Y, 0);
var topLc = new Point3d(extMin.X - xOffset, extMax.Y, 0);
fromPoint = botLc.GetMidPoint(topLc);
break;
case Enums.AttachmentPoint.RightCenter:
var botRc = new Point3d(extMax.X - xOffset, extMin.Y, 0);
var topRc = new Point3d(extMax.X - xOffset, extMax.Y, 0);
fromPoint = botRc.GetMidPoint(topRc);
break;
default:
throw new ArgumentOutOfRangeException(nameof(attachmentPoint), attachmentPoint, null);
}
acEnt.Upgrade();
acEnt.TransformBy(Matrix3d.Displacement(fromPoint.GetVectorTo(initPoint)));
}
public static double GetLengthAcross(this Extents3d?extents, Point3d pt1, Point3d pt2)
{
double distanceAcross = 0;
if (extents == null)
{
return(distanceAcross);
}
var minPt = extents.Value.MinPoint;
var maxPt = extents.Value.MaxPoint;
var minX = minPt.X;
var minY = minPt.Y;
var maxX = maxPt.X;
var maxY = maxPt.Y;
var botLeft = new Point2d(minX, minY);
var topLeft = new Point2d(minX, maxY);
var topRight = new Point2d(maxX, maxY);
var botRight = new Point2d(maxX, minY);
var center = minPt.Flatten().GetMidPoint(maxPt.Flatten());
//Create rectangle lines from the extents
var pline = new Polyline();
pline.AddVertexAt(0, botLeft, 0, 0, 0);
pline.AddVertexAt(0, topLeft, 0, 0, 0);
pline.AddVertexAt(0, topRight, 0, 0, 0);
pline.AddVertexAt(0, botRight, 0, 0, 0);
pline.Closed = true;
var lineStart = new Point3d(pt1.X, pt1.Y, 0);
var lineEnd = new Point3d(pt2.X, pt2.Y, 0);
var line = new Line(lineStart, lineEnd);
pline.TransformBy(Matrix3d.Displacement(center.GetVectorTo(Point3d.Origin)));
line.TransformBy(Matrix3d.Displacement(lineStart.GetMidPoint(lineEnd).GetVectorTo(Point3d.Origin)));
var ixPoints = new Point3dCollection();
line.IntersectWith(pline, Intersect.ExtendThis, ixPoints, IntPtr.Zero, IntPtr.Zero);
if (ixPoints.Count == 2)
{
distanceAcross = ixPoints[0].DistanceTo(ixPoints[1]);
}
else
{
distanceAcross = Math.Abs(maxX - minX);
}
pline.Dispose();
line.Dispose();
return(distanceAcross);
}
