private bool Recalc()
{
if (theBaseCurve == null)
{
return(false);
}
Plane pln;
if (theBaseCurve.GetPlanarState() == PlanarState.Planar)
{
pln = theBaseCurve.GetPlane();
}
else
{
pln = base.ActiveDrawingPlane;
}
ICurve2D c2d = theBaseCurve.GetProjectedCurve(pln);
ICurve2D app = c2d.Approximate(false, Frame.GetDoubleSetting("Approximate.Precision", 0.01));
Border bdr = new Border(app);
Border[] res = bdr.GetParallel(theDistance, true, 0.0, theMinAngle);
Block blk = Block.Construct();
for (int i = 0; i < res.Length; ++i)
{
IGeoObject go = res[i].AsPath().MakeGeoObject(pln);
go.CopyAttributes(theBaseCurve as IGeoObject);
(go as IColorDef).ColorDef = (theBaseCurve as IColorDef).ColorDef;
blk.Add(go);
}
base.ActiveObject = blk;
return(true);
}
/// <summary>
/// Calculates the intersection points of the two curves.
/// </summary>
/// <param name="curve1">First curve</param>
/// <param name="curve2">Second curve</param>
/// <param name="par1">Resulting parameters for the first curve</param>
/// <param name="par2">Resulting parameters for the second curve</param>
/// <param name="intersection">Three dimensional intersection points</param>
/// <returns>Number of intersection points</returns>
public static int Intersect(ICurve curve1, ICurve curve2, out double[] par1, out double[] par2, out GeoPoint[] intersection)
{
// wenn es eine gemeinsame Ebene gibt, dann in dieser Ebene schneiden
if (GetCommonPlane(curve1, curve2, out Plane pln))
{
ICurve2D c2d1 = curve1.GetProjectedCurve(pln);
ICurve2D c2d2 = curve2.GetProjectedCurve(pln);
GeoPoint2DWithParameter[] ips = c2d1.Intersect(c2d2);
// geht die Parametrierung der projizierten Kurven analog zu den Originalen?
// da wir ja nur in die Ebene Projizieren, in der sich duie Kurven ohnehin befinden, müsste das stimmen
// das muss aber noch getestet werden
par1 = new double[ips.Length];
par2 = new double[ips.Length];
intersection = new GeoPoint[ips.Length];
for (int i = 0; i < ips.Length; ++i)
{
par1[i] = ips[i].par1;
par2[i] = ips[i].par2;
intersection[i] = pln.ToGlobal(ips[i].p);
}
return(ips.Length);
}
// eine Linie und eine nichtebene Kurve noch gesondert prüfen
if (curve1.GetPlanarState() == PlanarState.Planar)
{
double[] ips = curve2.GetPlaneIntersection(curve1.GetPlane());
List <double> lpar1 = new List <double>();
List <double> lpar2 = new List <double>();
List <GeoPoint> lip = new List <GeoPoint>();
for (int i = 0; i < ips.Length; ++i)
{
GeoPoint p = curve2.PointAt(ips[i]);
double ppar1 = curve1.PositionOf(p);
GeoPoint p1 = curve1.PointAt(ppar1);
if (Precision.IsEqual(p, p1))
{
lpar1.Add(ppar1);
lpar2.Add(ips[i]);
lip.Add(new GeoPoint(p, p1));
}
}
par1 = lpar1.ToArray();
par2 = lpar2.ToArray();
intersection = lip.ToArray();
return(par1.Length);
}
if (curve2.GetPlanarState() == PlanarState.Planar)
{
return(Intersect(curve2, curve1, out par2, out par1, out intersection));
}
// Fehlt noch die Abfrage nach einer Linie, denn die ist ja nicht planar
// allgemeiner Fall: zwei nicht ebene Kurven
TetraederHull th1 = new TetraederHull(curve1);
TetraederHull th2 = new TetraederHull(curve2);
return(th1.Intersect(th2, out par1, out par2, out intersection));
}
public override ISurface GetOffsetSurface(double offset)
{
if (basisCurve.GetPlanarState() != PlanarState.NonPlanar)
{
Plane pln = Plane.XYPlane;
if (basisCurve.GetPlanarState() == PlanarState.Planar)
{
pln = basisCurve.GetPlane();
}
else if (basisCurve.GetPlanarState() == PlanarState.UnderDetermined)
{
pln = new Plane(basisCurve.StartPoint, basisCurve.StartDirection, basisCurve.StartDirection ^ direction);
}
ICurve2D c2d = basisCurve.GetProjectedCurve(pln);
ICurve2D c2dp = c2d.Parallel(offset, false, Precision.eps, Math.PI);
if (c2dp != null)
{
return(new SurfaceOfLinearExtrusion(c2dp.MakeGeoObject(pln) as ICurve, direction, curveStartParameter, curveEndParameter));
}
}
return(new OffsetSurface(this, offset));
}
/// <summary>
/// Determines the commomn plane of a point and a curve. Returns the common plane in the
/// parameter and true if there is such a plane. Returns false, if the point lies not
/// in the plane. <seealso cref="Precision"/>
/// </summary>
/// <param name="p">The point</param>
/// <param name="c2">The curve</param>
/// <param name="CommonPlane">The common plane</param>
/// <returns>true, if there is a common plane, else false</returns>
public static bool GetCommonPlane(GeoPoint p, ICurve c2, out Plane CommonPlane)
{ // kommt erstaunlicherweise ohne Zugriff auf die konkreten Kurven aus
PlanarState ps2 = c2.GetPlanarState();
if (ps2 == PlanarState.NonPlanar)
{
CommonPlane = new Plane(Plane.StandardPlane.XYPlane, 0.0); // braucht leider ein Ergebnis
return(false);
}
if (ps2 == PlanarState.Planar)
{
Plane p2 = c2.GetPlane();
if (Precision.IsPointOnPlane(p, p2))
{
CommonPlane = p2;
return(true);
}
}
else
{ // UnderDetermined, also Linie oder so
GeoVector v1 = p - c2.StartPoint;
GeoVector v2 = c2.StartDirection;
if (!Precision.SameDirection(v1, v2, false) && !Precision.IsNullVector(v1))
{
Plane pl = new Plane(p, v1, v2);
if (c2.IsInPlane(pl))
{
CommonPlane = pl;
return(true);
}
}
}
CommonPlane = new Plane(Plane.StandardPlane.XYPlane, 0.0); // braucht leider ein Ergebnis
return(false);
}
private bool SetFacesAndOffset(bool testOnly, object distanceFromHere, object distanceToHere)
{
if (distanceFromHere == null || distanceToHere == null)
{
return(true); // because this means, you can use the object
}
List <Face> fromHere = new List <Face>();
List <Face> toHere = new List <Face>();
Vertex vtx1 = distanceFromHere as Vertex;
Vertex vtx2 = distanceToHere as Vertex;
Edge edg1 = distanceFromHere as Edge;
Edge edg2 = distanceToHere as Edge;
Face fc1 = distanceFromHere as Face;
Face fc2 = distanceToHere as Face;
ICurve crv1 = distanceFromHere as ICurve;
ICurve crv2 = distanceToHere as ICurve;
originalOffset = GeoVector.NullVector;
if (distanceToHere is GeoObject.Point pnt && vtx2 == null)
{
vtx2 = new Vertex(pnt.Location);
}
if (vtx1 != null && vtx2 != null)
{
originalOffset = vtx1.Position - vtx2.Position;
}
else if ((vtx1 != null && edg2 != null) || (vtx2 != null && edg1 != null))
{
Vertex vtx;
Edge edg;
List <Face> lv, le;
if (vtx1 != null)
{
vtx = vtx1; edg = edg2; lv = fromHere; le = toHere;
}
else
{
vtx = vtx2; edg = edg1; lv = toHere; le = fromHere;
}
double cpos = edg.Curve3D.PositionOf(vtx.Position);
originalOffset = vtx.Position - edg.Curve3D.PointAt(cpos);
if (vtx1 == null)
{
originalOffset.Reverse();
}
}
else if ((vtx1 != null && fc2 != null) || (vtx2 != null && fc1 != null))
{
Vertex vtx;
Face fc;
List <Face> lv, le;
if (vtx1 != null)
{
vtx = vtx1; fc = fc2; lv = fromHere; le = toHere;
}
else
{
vtx = vtx2; fc = fc1; lv = toHere; le = fromHere;
}
GeoPoint2D[] pfs = fc.Surface.PerpendicularFoot(vtx.Position);
for (int i = 0; i < pfs.Length; i++)
{
if (fc.Contains(ref pfs[i], true))
{
originalOffset = vtx.Position - fc.Surface.PointAt(pfs[i]);
if (vtx1 == null)
{
originalOffset.Reverse();
}
break;
}
}
}
else if ((edg1 != null || crv1 != null) && (edg2 != null || crv2 != null))
{
double pos1 = 0.5, pos2 = 0.5;
if (crv1 == null)
{
crv1 = edg1.Curve3D;
}
if (crv2 == null)
{
crv2 = edg2.Curve3D;
}
if (crv1 is Line l1 && crv2 is Line l2)
{
if (Precision.SameDirection(l1.StartDirection, l2.StartDirection, false))
{
double u = crv1.PositionOf(crv2.StartPoint);
originalOffset = crv2.StartPoint - crv1.PointAt(u);
offsetStartPoint = crv1.PointAt(u);
}
else
{
Geometry.DistLL(l1.StartPoint, l1.StartDirection, l2.StartPoint, l2.StartDirection, out double par1, out double par2);
originalOffset = l2.PointAt(par2) - l1.PointAt(par1);
offsetStartPoint = l1.PointAt(par1);
}
}
else if (crv1.GetPlanarState() == PlanarState.Planar && crv2.GetPlanarState() == PlanarState.Planar)
{ // probably parallel planes, so newton could find anything
GeoPoint foot = crv1.GetPlane().ToLocal(crv2.StartPoint);
originalOffset = crv2.StartPoint - foot;
offsetStartPoint = foot;
}
else if (Curves.NewtonMinDist(crv1, ref pos1, crv2, ref pos2))
{
originalOffset = crv2.PointAt(pos2) - crv1.PointAt(pos1);
offsetStartPoint = crv1.PointAt(pos1);
}
// else no distance between two curves, maybe check some more cases, which make a usable offset
}
private bool showRoundPathTestIntersection(ICurve iCurveTest)
{ // jetzt getestet, ob der Pfad sich selbst überschneidet:
// owner = (iCurveTest as IGeoObject).Owner; // owner merken für löschen und Einfügen
if (iCurveTest.GetPlanarState() == PlanarState.Planar) // also in einer Ebene
{
Plane pl = iCurveTest.GetPlane();
ICurve2D curve_2D = iCurveTest.GetProjectedCurve(pl); // die 2D-Kurve
if (curve_2D is Path2D)
{
(curve_2D as Path2D).Flatten();
}
ICurve2D curveTemp;
if (iCurveTest is Polyline)
{ // GetSelfIntersections geht nur mit Pfaden!
Path p = Path.Construct();
p.Set(new ICurve[] { iCurveTest.Clone() });
p.Flatten();
curveTemp = p.GetProjectedCurve(pl);
}
else
{
curveTemp = curve_2D;
}
double[] pathIntersectionPoints = curveTemp.GetSelfIntersections(); // die Schnittpunkte mit sich selbst
if (pathIntersectionPoints.Length > 0)
{
double distS = double.MaxValue; // Entfernung des Pickpunkts zu den Schnittpunkten
GeoPoint2D objectPoint2D = new GeoPoint2D(0.0, 0.0);
int interSectIndex = 0;
for (int i = 0; i < pathIntersectionPoints.Length; i += 2) // immer paarweise, jeweils am Anfang und Ende
{ // den nächsten Schnittpunkt bestimmen, einer pro Paar reicht dazu
GeoPoint2D ps = curveTemp.PointAt(pathIntersectionPoints[i]);
double distLoc = Geometry.Dist(ps, pl.Project(objectPoint));
if (distLoc < distS)
{
distS = distLoc;
objectPoint2D = ps; // Pickpunkt merken
interSectIndex = i;
}
}
// jetzt hat er den nächsten Kreuzungspunkt bestimmt. Nun nachschauen, ob die Mouseposition evtl. noch näher an einem gewöhnlichen Pfadpunkt steht! Wenn ja: nichts machen, der Resr erfolgt dann weiter unten in showRound!
for (int i = 0; i < (curveTemp as Path2D).SubCurvesCount; i++)
{
double distLoc = Geometry.Dist((curveTemp as Path2D).SubCurves[i].StartPoint, pl.Project(objectPoint));
if (distLoc < distS)
{ // ein Pfadpunkt liegt näher: das reicht! Raus hier!
return(false);
}
}
// Jetzt: die Kreuzungspunkte (einer von vorne, einer von hinten) in die Testkurve einfuegen!
if (iCurveTest is Path)
{
(iCurveTest as Path).InsertPoint(pathIntersectionPoints[interSectIndex]);
(iCurveTest as Path).InsertPoint(pathIntersectionPoints[interSectIndex + 1]);
}
if (iCurveTest is Polyline)
{
(iCurveTest as Polyline).InsertPoint(pathIntersectionPoints[interSectIndex]);
(iCurveTest as Polyline).InsertPoint(pathIntersectionPoints[interSectIndex + 1]);
}
return(true);
}
}
return(false);
}
/// <summary>
/// Overrides <see cref="CADability.GeoObject.ISurfaceImpl.Intersect (ICurve, BoundingRect, out GeoPoint[], out GeoPoint2D[], out double[])"/>
/// </summary>
/// <param name="curve"></param>
/// <param name="uvExtent"></param>
/// <param name="ips"></param>
/// <param name="uvOnFaces"></param>
/// <param name="uOnCurve3Ds"></param>
public override void Intersect(ICurve curve, BoundingRect uvExtent, out GeoPoint[] ips, out GeoPoint2D[] uvOnFaces, out double[] uOnCurve3Ds)
{
if (curve is Line)
{
GeoPoint ip;
if (Plane.Intersect(curve.StartPoint, curve.StartDirection, out ip))
{
ips = new GeoPoint[] { ip };
uvOnFaces = new GeoPoint2D[] { PositionOf(ip) };
uOnCurve3Ds = new double[] { curve.PositionOf(ip) };
}
else
{
ips = new GeoPoint[0];
uvOnFaces = new GeoPoint2D[0];
uOnCurve3Ds = new double[0];
}
#if DEBUG
//GeoPoint[] ipsdbg;
//GeoPoint2D[] uvOnFacesdbg;
//double[] uOnCurve3Dsdbg;
//base.Intersect(curve, out ipsdbg, out uvOnFacesdbg, out uOnCurve3Dsdbg);
#endif
return;
}
//else if (curve is IExplicitPCurve3D)
//{
// ExplicitPCurve3D epc3d = (curve as IExplicitPCurve3D).GetExplicitPCurve3D();
// double [] res = epc3d.GetPlaneIntersection(Location, DirectionX, DirectionY);
// for (int i = 0; i < res.Length; i++)
// {
// double d = Plane.Distance(epc3d.PointAt(res[i]));
// if (i>0) d = Plane.Distance(epc3d.PointAt((res[i]+res[i-1])/2.0));
// }
// double dd = Plane.Distance(epc3d.PointAt(epc3d.knots[epc3d.knots.Length - 1]));
// for (int i = 0; i < res.Length; i++)
// {
// res[i] = (res[i] - epc3d.knots[0]) / (epc3d.knots[epc3d.knots.Length - 1] - epc3d.knots[0]);
// }
//}
else
{
if (curve.GetPlanarState() == PlanarState.Planar)
{
GeoPoint loc;
GeoVector dir;
Plane pln = curve.GetPlane();
if (Plane.Intersect(curve.GetPlane(), out loc, out dir))
{
ICurve2D c2d = curve.GetProjectedCurve(pln);
BoundingRect ext = c2d.GetExtent();
ext.Inflate(ext.Height + ext.Width); // sonst entstehen null-Linien
ICurve2D ll = new Line2D(pln.Project(loc), pln.Project(dir), ext);
#if DEBUG
DebuggerContainer dc = new DebuggerContainer();
dc.Add(c2d);
dc.Add(ll);
#endif
GeoPoint2DWithParameter[] gpp = ll.Intersect(c2d);
ips = new GeoPoint[gpp.Length];
uvOnFaces = new GeoPoint2D[gpp.Length];
uOnCurve3Ds = new double[gpp.Length];
for (int i = 0; i < gpp.Length; ++i)
{
ips[i] = pln.ToGlobal(gpp[i].p);
uvOnFaces[i] = PositionOf(ips[i]);
uOnCurve3Ds[i] = curve.PositionOf(ips[i]);
}
}
else
{
ips = new GeoPoint[0];
uvOnFaces = new GeoPoint2D[0];
uOnCurve3Ds = new double[0];
}
#if DEBUG
//GeoPoint[] ipsdbg;
//GeoPoint2D[] uvOnFacesdbg;
//double[] uOnCurve3Dsdbg;
//base.Intersect(curve, out ipsdbg, out uvOnFacesdbg, out uOnCurve3Dsdbg);
#endif
return;
}
}
TetraederHull th = new TetraederHull(curve);
// alle Kurven müssten eine gemeinsame basis habe, auf die man sich hier beziehen kann
// damit die TetraederHull nicht mehrfach berechnet werden muss
th.PlaneIntersection(this, out ips, out uvOnFaces, out uOnCurve3Ds);
// base.Intersect(curve, out ips, out uvOnFaces, out uOnCurve3Ds);
}
public HelicalSurface(ICurve basisCurve, GeoPoint axisLocation, GeoVector axisDirection, double pitch, double curveStartParameter, double curveEndParameter, GeoPoint?axisRefPoint = null) : base()
{
this.curveEndParameter = curveEndParameter;
this.curveStartParameter = curveStartParameter;
this.pitch = pitch;
// curveStartParameter und curveEndParameter haben folgenden Sinn:
// der Aufrufer werwartet ein bestimmtes u/v System.
// in u ist es die Kreisbewegung, in v ist es die Kurve (andersrum als bei SurfaceOfLinearExtrusion)
// curveStartParameter und curveEndParameter definieren die Lage von v, die Lage von u ist durch die Ebene
// bestimmt
// finden der Hauptebene, in der alles stattfindet. Die ist gegeben durch die Achse und die Kurve
Plane pln;
if (axisRefPoint.HasValue)
{
GeoPoint cnt = Geometry.DropPL(axisRefPoint.Value, axisLocation, axisDirection);
pln = new Plane(axisLocation, axisRefPoint.Value - cnt, axisDirection);
}
else
{
double ds = Geometry.DistPL(basisCurve.StartPoint, axisLocation, axisDirection);
double de = Geometry.DistPL(basisCurve.EndPoint, axisLocation, axisDirection);
if (ds > de && ds > Precision.eps)
{
GeoPoint cnt = Geometry.DropPL(basisCurve.StartPoint, axisLocation, axisDirection);
pln = new Plane(axisLocation, basisCurve.StartPoint - cnt, axisDirection);
}
else if (de >= ds && de > Precision.eps)
{
GeoPoint cnt = Geometry.DropPL(basisCurve.EndPoint, axisLocation, axisDirection);
pln = new Plane(axisLocation, basisCurve.EndPoint - cnt, axisDirection);
}
else if (basisCurve.GetPlanarState() == PlanarState.Planar)
{
Plane ppln = basisCurve.GetPlane();
GeoVector dirx = ppln.Normal ^ axisDirection; // richtig rum?
pln = new Plane(axisLocation, dirx, axisDirection);
}
else
{ // es könnte sein, dass die ganze Fläche singulär ist
// dann kann man nichts machen, sollte aber nicht vorkommen
throw new SurfaceOfRevolutionException("Surface is invalid");
}
}
// pln hat jetzt den Ursprung bei axisLocation, die y-Achse ist axisDirection und die x-Achse durch die
// die Orientierung scheint mir noch fraglich, wierum wird gedreht, wierum läuft u
// Kurve gegeben
basisCurve2D = basisCurve.GetProjectedCurve(pln);
// ACHTUNG "Parameterproblem": durch die Projektion der Kurve verschiebt sich bei Kreisen der Parameterraum
// da 2D Kreise bzw. Bögen keine Achse haben und sich immer auf die X-Achse beziehen
if (basisCurve2D is Arc2D)
{
curveParameterOffset = (basisCurve2D as Arc2D).StartParameter - this.curveStartParameter;
}
else if (basisCurve2D is BSpline2D)
{ // beim BSpline fängt der Parameter im 3D bei knots[0] an, welches gleich this.curveStartParameter ist
// curveParameterOffset = this.curveStartParameter;
// wenn man einen geschlossenen Spline um eine Achse rotieren lässt
// dann entsteht mit obiger Zeile ein Problem, mit dieser jedoch nicht:
curveParameterOffset = (basisCurve2D as BSpline2D).Knots[0];
}
else
{
curveParameterOffset = 0.0;
}
toSurface = ModOp.Fit(new GeoPoint[] { GeoPoint.Origin, GeoPoint.Origin + GeoVector.XAxis, GeoPoint.Origin + GeoVector.YAxis },
new GeoPoint[] { axisLocation, axisLocation + pln.DirectionX, axisLocation + pln.DirectionY }, false);
fromSurface = toSurface.GetInverse();
}
/// <summary>
/// Determines the common plane of the two curves. If there is a common plane,
/// the Parameter CommonPlane gets the result ant the function returns true. Otherwise
/// the function returns false.
/// </summary>
/// <param name="c1">first curve</param>
/// <param name="c2">second curve</param>
/// <param name="CommonPlane">the resulting common plane</param>
/// <returns></returns>
public static bool GetCommonPlane(ICurve c1, ICurve c2, out Plane CommonPlane)
{ // kommt erstaunlicherweise ohne Zugriff auf die konkreten Kurven aus
PlanarState ps1 = c1.GetPlanarState();
PlanarState ps2 = c2.GetPlanarState();
if (ps1 == PlanarState.NonPlanar || ps2 == PlanarState.NonPlanar)
{
CommonPlane = new Plane(Plane.StandardPlane.XYPlane, 0.0); // braucht leider ein Ergebnis
return(false);
}
if (ps1 == PlanarState.Planar)
{
if (ps2 == PlanarState.Planar)
{
Plane p1 = c1.GetPlane();
Plane p2 = c2.GetPlane();
if (Precision.IsEqual(p1, p2))
{
CommonPlane = p1;
return(true);
}
}
else
{ // ps2 ist UnderDetermined, also einen Punkt mit p1 testen
Plane p1 = c1.GetPlane();
if (c2.IsInPlane(p1))
{
CommonPlane = p1;
return(true);
}
}
}
else
{ // ps1 ist UnderDetermined
if (ps2 == PlanarState.Planar)
{
Plane p2 = c2.GetPlane();
if (c1.IsInPlane(p2))
{
CommonPlane = p2;
return(true);
}
}
else
{
// ps1 und ps2 UnderDetermined. Das können nur zwei Linien sein (oder
// polylines mit einem Segment oder ähnliches)
GeoVector v1 = c1.StartDirection;
GeoVector v2 = c2.StartDirection;
if (Precision.SameDirection(v1, v2, false))
{ // d.h. parallel
GeoVector v3 = c2.StartPoint - c1.StartPoint;
if (!Precision.SameDirection(v1, v3, false))
{
try
{
CommonPlane = new Plane(c1.StartPoint, v1, v3);
return(true);
}
catch (PlaneException)
{
CommonPlane = new Plane(Plane.StandardPlane.XYPlane, 0.0); // braucht leider ein Ergebnis
return(false);
}
} // else: colinear, geht also nicht
}
else
{
try
{
Plane p = new Plane(c1.StartPoint, v1, v2);
if (c2.IsInPlane(p))
{
CommonPlane = p;
return(true);
}
GeoPoint[] pnts = new GeoPoint[4];
pnts[0] = c1.StartPoint;
pnts[1] = c1.EndPoint;
pnts[2] = c2.StartPoint;
pnts[3] = c2.EndPoint;
p = Plane.FromPoints(pnts, out double maxDist, out bool isLinear);
if (maxDist < Precision.eps)
{
CommonPlane = p;
return(true);
}
}
catch (PlaneException)
{
CommonPlane = new Plane(Plane.StandardPlane.XYPlane, 0.0); // braucht leider ein Ergebnis
return(false);
}
}
}
}
CommonPlane = new Plane(Plane.StandardPlane.XYPlane, 0.0); // braucht leider ein Ergebnis
return(false);
}
private void selectDir()
{
GeoVector dirCurveMod = new GeoVector(0.0, 1.0, 1.0);
switch (dirPointSelect)
{ // Startpunkt|Automatik|Endpunkt|Mittelpunkt|freier Punkt
default:
dirCurveMod = dirCurve.StartDirection;
break;
case 0: // Startpunkt
dirCurveMod = dirCurve.StartDirection;
break;
case 1: // Automatik
if (dirCurve.PositionOf(objectPoint) > 0.66)
{
dirCurveMod = dirCurve.EndDirection;
}
else
if (dirCurve.PositionOf(objectPoint) > 0.33)
{
dirCurveMod = dirCurve.DirectionAt(0.5);
}
else
{
dirCurveMod = dirCurve.StartDirection;
}
break;
case 2: // Endpunkt
dirCurveMod = dirCurve.EndDirection;
break;
case 3: // Mittelpunkt
dirCurveMod = dirCurve.DirectionAt(0.5);
break;
case 4: // freier Punkt
dirCurveMod = dirCurve.DirectionAt(dirCurve.PositionOf(objectPoint));
break;
}
Plane pl;
if (dirCurve.GetPlanarState() == PlanarState.Planar)
{
pl = dirCurve.GetPlane();
}
else
{
pl = base.ActiveDrawingPlane;
}
for (int i = 0; i < (dirOffsetSelect); ++i)
{
dirCurveMod = dirCurveMod ^ pl.Normal;
}
using (Frame.Project.Undo.ContextFrame(this))
{
if (vectorProperty != null)
{
vectorProperty.SetGeoVector(dirCurveMod);
}
}
actualVector = dirCurveMod;
}
/// <summary>
/// Overrides <see cref="CADability.GeoObject.ISurfaceImpl.GetPlaneIntersection (PlaneSurface, double, double, double, double, double)"/>
/// </summary>
/// <param name="pl"></param>
/// <param name="umin"></param>
/// <param name="umax"></param>
/// <param name="vmin"></param>
/// <param name="vmax"></param>
/// <param name="precision"></param>
/// <returns></returns>
public override IDualSurfaceCurve[] GetPlaneIntersection(PlaneSurface pl, double umin, double umax, double vmin, double vmax, double precision)
{
if (firstCurve is Line && secondCurve is Line)
{
if (Precision.IsPerpendicular(firstCurve.StartDirection, pl.Normal, false) &&
Precision.IsPerpendicular(secondCurve.StartDirection, pl.Normal, false))
{ // eine Ebene, die zu beiden Linien parallel ist
GeoPoint sp1, ep1, sp2, ep2;
sp1 = firstCurve.PointAt(umin);
ep1 = secondCurve.PointAt(umin);
sp2 = firstCurve.PointAt(umax);
ep2 = secondCurve.PointAt(umax);
GeoPoint2D[] ip1 = pl.GetLineIntersection(sp1, ep1 - sp1);
GeoPoint2D[] ip2 = pl.GetLineIntersection(sp2, ep2 - sp2);
if (ip1.Length == 1 && ip2.Length == 1)
{
GeoPoint sp = pl.PointAt(ip1[0]);
GeoPoint ep = pl.PointAt(ip2[0]);
double v = Geometry.LinePar(sp1, ep1, sp);
Line line = Line.Construct();
line.SetTwoPoints(sp, ep);
DualSurfaceCurve dsc = new DualSurfaceCurve(line, this, new Line2D(new GeoPoint2D(umin, v), new GeoPoint2D(umax, v)),
pl, new Line2D(ip1[0], ip2[0]));
return(new IDualSurfaceCurve[] { dsc });
}
}
}
if (firstCurve is Ellipse && secondCurve is Ellipse)
{
Ellipse e1 = firstCurve as Ellipse;
Ellipse e2 = secondCurve as Ellipse;
if (Precision.SameDirection(pl.Normal, e1.Plane.Normal, false) && Precision.SameDirection(pl.Normal, e2.Plane.Normal, false))
{
if (e1.IsCircle && e2.IsCircle)
{
GeoPoint sp1, ep1, sp2, ep2, spm, epm;
sp1 = firstCurve.PointAt(umin);
ep1 = secondCurve.PointAt(umin);
sp2 = firstCurve.PointAt(umax);
ep2 = secondCurve.PointAt(umax);
spm = firstCurve.PointAt((umin + umax) / 2.0);
epm = secondCurve.PointAt((umin + umax) / 2.0);
GeoPoint2D[] ip1 = pl.GetLineIntersection(sp1, ep1 - sp1);
GeoPoint2D[] ip2 = pl.GetLineIntersection(sp2, ep2 - sp2);
GeoPoint2D[] ipm = pl.GetLineIntersection(spm, epm - spm);
if (ip1.Length == 1 && ip2.Length == 1 && ipm.Length == 1)
{
Ellipse e3 = Ellipse.Construct();
e3.SetArc3Points(pl.PointAt(ip1[0]), pl.PointAt(ipm[0]), pl.PointAt(ip2[0]), pl.Plane);
double v = Geometry.LinePar(sp1, ep1, pl.PointAt(ip1[0]));
DualSurfaceCurve dsc = new DualSurfaceCurve(e3, this, new Line2D(new GeoPoint2D(umin, v), new GeoPoint2D(umax, v)),
pl, e3.GetProjectedCurve(pl.Plane));
return(new IDualSurfaceCurve[] { dsc });
}
}
}
}
PlanarState ps1 = firstCurve.GetPlanarState();
PlanarState ps2 = secondCurve.GetPlanarState();
if ((ps1 == PlanarState.UnderDetermined || ps1 == PlanarState.Planar) && (ps2 == PlanarState.UnderDetermined || ps2 == PlanarState.Planar))
{
if (Precision.IsPerpendicular(firstCurve.StartDirection, pl.Normal, false) && Precision.IsPerpendicular(secondCurve.StartDirection, pl.Normal, false))
{ // beide Kurven sind eben und parallel zur Schnittebene, wir haben also ein festes v und somit eine Zwischenkurve
GeoPoint ip = pl.Plane.Intersect(firstCurve.StartPoint, secondCurve.StartPoint - firstCurve.StartPoint);
double v = Geometry.LinePar(firstCurve.StartPoint, secondCurve.StartPoint, ip);
ICurve cv = FixedV(v, umin, umax);
DualSurfaceCurve dsc = new DualSurfaceCurve(cv, this, new Line2D(new GeoPoint2D(umin, v), new GeoPoint2D(umax, v)),
pl, cv.GetProjectedCurve(pl.Plane));
return(new IDualSurfaceCurve[] { dsc });
}
}
return(base.GetPlaneIntersection(pl, umin, umax, vmin, vmax, precision));
}