public void DrawGirder()
{
var doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
var db = doc.Database;
var ed = doc.Editor;
Matrix3d ucs2wcs = AcadGraphics.UcsToWcs;
Matrix3d wcs2ucs = AcadGraphics.WcsToUcs;
PromptEntityOptions centerlineOpts = new PromptEntityOptions("\nEksen: ");
centerlineOpts.SetRejectMessage("\nSelect a curve.");
centerlineOpts.AddAllowedClass(typeof(Curve), false);
PromptEntityResult centerlineRes = ed.GetEntity(centerlineOpts);
if (centerlineRes.Status != PromptStatus.OK)
{
return;
}
ObjectId centerlineId = centerlineRes.ObjectId;
PromptEntityOptions blockOpts = new PromptEntityOptions("\nBlok: ");
blockOpts.SetRejectMessage("\nSelect a block reference.");
blockOpts.AddAllowedClass(typeof(BlockReference), false);
PromptEntityResult blockRes = ed.GetEntity(blockOpts);
if (blockRes.Status != PromptStatus.OK)
{
return;
}
ObjectId blockReferenceId = blockRes.ObjectId;
var resp1 = ed.GetPoint("\nBlok üzerinde hizalanacak ilk nokta: ");
if (resp1.Status != PromptStatus.OK)
{
return;
}
Point3d alignmentPoint1 = resp1.Value.TransformBy(ucs2wcs);
var resp2 = ed.GetPoint("\nBlok üzerinde hizalanacak ikinci nokta: ");
if (resp2.Status != PromptStatus.OK)
{
return;
}
Point3d alignmentPoint2 = resp2.Value.TransformBy(ucs2wcs);
GirderAlignment alignment = GirderAlignment.TopSurface;
PromptKeywordOptions kopts = new PromptKeywordOptions("\nHizalama yöntemi [üst Yüzey/Alt yüzey]: ", "Top Bottom");
kopts.AllowNone = true;
kopts.Keywords.Default = "Top";
var resk = ed.GetKeywords(kopts);
if (resk.Status == PromptStatus.OK && resk.StringResult == "Bottom")
{
alignment = GirderAlignment.BottomSurface;
}
else if (resk.Status == PromptStatus.OK && resk.StringResult == "Top")
{
alignment = GirderAlignment.TopSurface;
}
else if (resk.Status == PromptStatus.None)
{
alignment = GirderAlignment.TopSurface;
}
else
{
return;
}
using (Transaction tr = db.TransactionManager.StartTransaction())
using (BlockTableRecord btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite))
{
try
{
Curve centerline = tr.GetObject(centerlineId, OpenMode.ForRead) as Curve;
BlockReference blockRef = tr.GetObject(blockReferenceId, OpenMode.ForRead) as BlockReference;
ObjectId blockDefinitionId = AcadEntity.GetBlockDefinitionFromReference(db, blockReferenceId);
Point3d blockInsertionPoint = blockRef.Position;
Scale3d blockScale = blockRef.ScaleFactors;
blockInsertionPoint = blockInsertionPoint.TransformBy(blockRef.BlockTransform.Inverse());
alignmentPoint1 = alignmentPoint1.TransformBy(blockRef.BlockTransform.Inverse());
alignmentPoint2 = alignmentPoint2.TransformBy(blockRef.BlockTransform.Inverse());
Vector3d dist1 = alignmentPoint1 - blockInsertionPoint;
Vector3d dist2 = alignmentPoint2 - blockInsertionPoint;
while (true)
{
var opts = new PromptPointOptions("\nInsertion point: ");
opts.AllowNone = true;
var res = ed.GetPoint(opts);
if (res.Status != PromptStatus.OK)
{
break;
}
Point3d insertionPoint = res.Value.TransformBy(ucs2wcs);
// 10 iterations to approximate rotation
Point3d centerlinePoint1 = Point3d.Origin;
Point3d centerlinePoint2 = Point3d.Origin;
double rotation = 0;
double ucsRotation = 0;
for (int i = 0; i < 10; i++)
{
centerlinePoint1 = centerline.GetClosestPointTo((insertionPoint.TransformBy(wcs2ucs) + dist1.RotateBy(ucsRotation, Vector3d.ZAxis)).TransformBy(ucs2wcs), true);
centerlinePoint2 = centerline.GetClosestPointTo((insertionPoint.TransformBy(wcs2ucs) + dist2.RotateBy(ucsRotation, Vector3d.ZAxis)).TransformBy(ucs2wcs), true);
ucsRotation = Vector3d.XAxis.GetAngleTo(centerlinePoint2.TransformBy(wcs2ucs) - centerlinePoint1.TransformBy(wcs2ucs), Vector3d.ZAxis);
rotation = Vector3d.XAxis.GetAngleTo(centerlinePoint2 - centerlinePoint1, Vector3d.ZAxis);
}
if (alignment == GirderAlignment.TopSurface)
{
insertionPoint = (centerlinePoint1.TransformBy(wcs2ucs) - dist1.RotateBy(ucsRotation, Vector3d.ZAxis)).TransformBy(ucs2wcs);
}
BlockReference newBlock = AcadEntity.CreateBlockReference(db, blockDefinitionId, insertionPoint, blockScale, rotation);
btr.AppendEntity(newBlock);
tr.AddNewlyCreatedDBObject(newBlock, true);
tr.TransactionManager.QueueForGraphicsFlush();
}
}
catch (System.Exception e)
{
MessageBox.Show(e.ToString(), "XCOM", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
tr.Commit();
}
}
