/// <summary>
/// Overrides <see cref="CADability.Curve2D.GeneralCurve2D.MinDistance (ICurve2D)"/>
/// </summary>
/// <param name="Other"></param>
/// <returns></returns>
public override double MinDistance(ICurve2D Other)
{
if (Other is Line2D)
{
return(Other.MinDistance(this)); // bei der Linie ist es definiert
}
else if (Other is Circle2D)
{
double minDist = Curves2D.SimpleMinimumDistance(this, Other); // dort werden die Schnitt- Start- Endpunkte miteinander verrechnet
// jetzt nur noch gucken, ob sich die beiden Kreise oder Bögen annähern
Circle2D c = Other as Circle2D;
double cdist = Geometry.Dist(c.center, center);
if (cdist < Precision.eps)
{
return(minDist); // mit gleichen Mittelpunkten funktioniert
}
// das folgende nicht, aber der Abstand ist schon von SimpleMinimumDistance bestimmt
// da dort auch die Fußpunkte verwendung finden
if (cdist > c.radius + radius)
{ // Annäherung zweier nicht schneidenden Kreise
GeoVector2D dir = c.center - center; // von hier zum anderen
dir.Norm();
GeoPoint2D p1 = center + radius * dir;
GeoPoint2D p2 = c.center + c.radius * dir.Opposite();
double pos1 = this.PositionOf(p1);
double pos2 = c.PositionOf(p2);
if (pos1 >= 0.0 && pos1 <= 1.0 && pos2 >= 0.0 && pos2 <= 1.0)
{
minDist = Math.Min(minDist, cdist - c.radius - radius);
}
}
else if (radius - c.radius > cdist)
{ // Kreis c liegt innerhalb von diesem Kreis
GeoVector2D dir = c.center - center; // von hier zum anderen
dir.Norm();
GeoPoint2D p1 = center + radius * dir;
GeoPoint2D p2 = c.center + c.radius * dir;
double pos1 = this.PositionOf(p1);
double pos2 = c.PositionOf(p2);
if (pos1 >= 0.0 && pos1 <= 1.0 && pos2 >= 0.0 && pos2 <= 1.0)
{
minDist = Math.Min(minDist, Geometry.Dist(p1, p2));
}
}
else if (c.radius - radius > cdist)
{ // dieser Kreis liegt innerhalb von c
GeoVector2D dir = center - c.center;
dir.Norm();
GeoPoint2D p1 = c.center + c.radius * dir;
GeoPoint2D p2 = center + radius * dir;
double pos1 = c.PositionOf(p1);
double pos2 = PositionOf(p2);
if (pos1 >= 0.0 && pos1 <= 1.0 && pos2 >= 0.0 && pos2 <= 1.0)
{
minDist = Math.Min(minDist, Geometry.Dist(p1, p2));
}
}
return(minDist);
}
else
{
return(base.MinDistance(Other));
}
}
private void AdjustPeriodic(Face face2, ICurve2D curveOnFace2, GeoPoint leaveFace1)
{
if (!face2.Surface.IsUPeriodic && !face2.Surface.IsVPeriodic)
{
return;
}
double uperiod = 0.0, vperiod = 0.0;
if (face2.Surface.IsUPeriodic)
{
uperiod = face2.Surface.UPeriod;
}
if (face2.Surface.IsVPeriodic)
{
vperiod = face2.Surface.VPeriod;
}
GeoPoint2D pos = face2.Surface.PositionOf(leaveFace1);
if (!face2.area.Contains(pos, true))
{ // dieser Punkt muss eigentlich in Area anthalten sein, er kann höchstens um die Periode verschoben sein
bool found = false;
CompoundShape tst = face2.area.Expand((uperiod + vperiod) / 100);
if (tst.Contains(pos, true))
{
found = true;
}
if (!found && uperiod > 0.0)
{
if (tst.Contains(pos + uperiod * GeoVector2D.XAxis, true))
{
pos = pos + uperiod * GeoVector2D.XAxis;
found = true;
}
if (!found && tst.Contains(pos - uperiod * GeoVector2D.XAxis, true))
{
pos = pos - uperiod * GeoVector2D.XAxis;
found = true;
}
}
if (!found && vperiod > 0.0)
{
if (tst.Contains(pos + vperiod * GeoVector2D.YAxis, true))
{
pos = pos + vperiod * GeoVector2D.YAxis;
found = true;
}
if (!found && tst.Contains(pos - vperiod * GeoVector2D.YAxis, true))
{
pos = pos - vperiod * GeoVector2D.YAxis;
found = true;
}
}
}
// jetzt die Kurve so verschieben, dass der Punkt draufliegt
double du = 0.0, dv = 0.0;
double dist = curveOnFace2.MinDistance(pos);
if (uperiod > 0.0)
{
double d = curveOnFace2.MinDistance(pos + uperiod * GeoVector2D.XAxis);
if (d < dist)
{
du = -uperiod;
dist = d;
}
d = curveOnFace2.MinDistance(pos - uperiod * GeoVector2D.XAxis);
if (d < dist)
{
du = uperiod;
dist = d;
}
}
if (vperiod > 0.0)
{
double d = curveOnFace2.Distance(pos + vperiod * GeoVector2D.YAxis);
if (d < dist)
{
dv = -vperiod;
dist = d;
}
d = curveOnFace2.Distance(pos - vperiod * GeoVector2D.YAxis);
if (d < dist)
{
dv = vperiod;
dist = d;
}
}
if (du != 0.0 || dv != 0.0)
{
curveOnFace2.Move(du, dv);
}
}