public void GenegateUnigineSpline()
{
Document adoc = Application.DocumentManager.MdiActiveDocument;
if (adoc == null)
{
return;
}
Database db = adoc.Database;
Editor ed = adoc.Editor;
try
{
//выбрать 3d полилинию
PromptEntityOptions peo1 = new PromptEntityOptions("\nВыберите 3D полилинию");
peo1.SetRejectMessage("\nМожно выбрать только 3D полилинию");
peo1.AddAllowedClass(typeof(Polyline3d), true);
PromptEntityResult per1 = ed.GetEntity(peo1);
if (per1.Status != PromptStatus.OK)
{
return;
}
//создание данных для сериализации
UnigineSpline unigineSpline = new UnigineSpline();
Point3d center = Point3d.Origin;
using (Transaction tr = db.TransactionManager.StartTransaction())
{
Polyline3d poly = tr.GetObject(per1.ObjectId, OpenMode.ForRead) as Polyline3d;
if (poly == null)
{
return;
}
ObjectId[] verts = poly.Cast <ObjectId>().ToArray();
List <Point3d> pts = new List <Point3d>(verts.Length);
for (int i = 0; i < verts.Length; i++)
{
PolylineVertex3d vt = tr.GetObject(verts[i], OpenMode.ForRead) as PolylineVertex3d;
Point3d point3d = vt.Position;
pts.Add(point3d);
}
//найти среднюю точку
foreach (Point3d pt in pts)
{
center = center.Add(new Vector3d(pt.X, pt.Y, pt.Z));
}
center = center.DivideBy(pts.Count);
for (int i = 0; i < pts.Count; i++)
{
pts[i] = pts[i].Subtract(new Vector3d(center.X, center.Y, center.Z));
}
List <Vector3d> tangents = new List <Vector3d>(verts.Length);
tangents.Add((pts[1] - pts[0]).GetNormal());
for (int i = 1; i < verts.Length - 1; i++)
{
Vector3d tangent = ((pts[i + 1] - pts[i]).GetNormal()
+ (pts[i] - pts[i - 1]).GetNormal()).GetNormal();
tangents.Add(tangent);
}
tangents.Add((pts[verts.Length - 1] - pts[verts.Length - 2]).GetNormal());
for (int i = 0; i < verts.Length; i++)
{
unigineSpline.points.Add(new double[] { pts[i].X, pts[i].Y, pts[i].Z });
if (i > 0)
{
//тангенсы должны быть по модулю примерно 1/4 от расстояния между точками
double mult = (pts[i] - pts[i - 1]).Length / 4;
Vector3d tan0 = tangents[i - 1] * mult;
Vector3d tan1 = -tangents[i] * mult;
//сегмент
UnigineSegment segment = new UnigineSegment()
{
start_index = i - 1,
start_tangent = new double[] { tan0.X, tan0.Y, tan0.Z },
start_up = new double[] { 0, 0, 1 },
end_index = i,
end_tangent = new double[] { tan1.X, tan1.Y, tan1.Z },
end_up = new double[] { 0, 0, 1 },
};
unigineSpline.segments.Add(segment);
}
}
if (poly.Closed || pts[0].IsEqualTo(pts[verts.Length - 1]))
{
UnigineSegment lastSeg = unigineSpline.segments.Last();
UnigineSegment firstSeg = unigineSpline.segments.First();
if (pts[0].IsEqualTo(pts[verts.Length - 1]))
{
//замыкающий сегмент привязывается к стартовой точке
lastSeg.end_index = 0;
//тангенсы в стартовой точке
Vector3d tan = ((pts[1] - pts[0]).GetNormal()
+ (pts[verts.Length - 1] - pts[verts.Length - 2]).GetNormal()).GetNormal();
Vector3d tanLast = -tan * (pts[lastSeg.end_index] - pts[lastSeg.start_index]).Length / 4;
lastSeg.end_tangent = new double[] { tanLast.X, tanLast.Y, tanLast.Z };
Vector3d tanFirst = tan * (pts[firstSeg.end_index] - pts[firstSeg.start_index]).Length / 4;
firstSeg.start_tangent = new double[] { tanFirst.X, tanFirst.Y, tanFirst.Z };
}
else
{
//тангенсы в стартовой и последней точке
Point3d lastPt = pts[verts.Length - 1];
Point3d firstPt = pts[0];
Vector3d tanStart = ((pts[1] - firstPt).GetNormal()
+ (firstPt - lastPt).GetNormal()).GetNormal();
Vector3d tanEnd = ((firstPt - lastPt).GetNormal()
+ (lastPt - pts[verts.Length - 2]).GetNormal()).GetNormal();
Vector3d tanLast = -tanEnd * (pts[lastSeg.end_index] - pts[lastSeg.start_index]).Length / 4;
lastSeg.end_tangent = new double[] { tanLast.X, tanLast.Y, tanLast.Z };
Vector3d tanFirst = tanStart * (pts[firstSeg.end_index] - pts[firstSeg.start_index]).Length / 4;
firstSeg.start_tangent = new double[] { tanFirst.X, tanFirst.Y, tanFirst.Z };
//замыкающий сегмент
double mult = (firstPt - lastPt).Length / 4;
Vector3d tan0 = tanEnd * mult;
Vector3d tan1 = -tanStart * mult;
UnigineSegment segment = new UnigineSegment()
{
start_index = verts.Length - 1,
start_tangent = new double[] { tan0.X, tan0.Y, tan0.Z },
start_up = new double[] { 0, 0, 1 },
end_index = 0,
end_tangent = new double[] { tan1.X, tan1.Y, tan1.Z },
end_up = new double[] { 0, 0, 1 },
};
unigineSpline.segments.Add(segment);
}
}
tr.Commit();
}
//сериализация
//TODO: Сделать выбор папки
if (unigineSpline.segments.Count > 0)
{
string fileName = Common.Utils.GetNonExistentFileName(Path.GetDirectoryName(adoc.Name),
center.ToString().Replace(',', '_').Substring(1, center.ToString().Length - 2), "spl");
using (StreamWriter file = System.IO.File.CreateText(fileName))
{
JsonSerializer serializer = new JsonSerializer();
serializer.Serialize(file, unigineSpline);
}
}
}
catch (System.Exception ex)
{
CommonException(ex, "Ошибка при создании сплайна для UNIGINE");
}
}