/// <summary>
/// Overrides <see cref="CADability.GeoObject.ISurfaceImpl.HitTest (BoundingCube, out GeoPoint2D)"/>
/// </summary>
/// <param name="bc"></param>
/// <param name="uv"></param>
/// <returns></returns>
public override bool HitTest(BoundingCube bc, out GeoPoint2D uv)
{
Plane p = new Plane(GeoPoint.Origin, direction);
PlaneSurface ps = new PlaneSurface(p);
ICurve2D c = basisCurve.GetProjectedCurve(p);
GeoPoint[] points = bc.Points;
GeoPoint2D[] points2D = new GeoPoint2D[8];
for (int i = 0; i < 8; ++i)
{
points2D[i] = ps.PositionOf(points[i]);
}
// does c hit the polygon?
int[,] l = bc.LineNumbers;
for (int k = 0; k < 12; ++k)
{
int i = l[k, 0];
int j = l[k, 1];
ICurve2D c2 = new Line2D(points2D[i], points2D[j]);
if (c2.Length > 0)
{
GeoPoint2DWithParameter[] list = c.Intersect(c2);
for (int m = 0; m < list.Length; ++m)
{
GeoPoint2D d0 = list[m].p;
double d1 = (points2D[i] - d0).Length;
double d2 = (points2D[j] - d0).Length;
double d3 = (points2D[i] - points2D[j]).Length;
if (Math.Abs(d1 + d2 - d3) < Precision.eps)
{
if (d3 < Precision.eps)
{
throw new Exception();
}
GeoPoint gp = points[i] + (d1 / d3) * (points[j] - points[i]);
uv = PositionOf(gp);
return(true);
}
}
}
}
// is c in the polygon?
GeoPoint e = ps.PointAt(c.EndPoint);
bool res = (bc.Interferes(e, direction, bc.Size * 1e-8, false));
if (res)
{ // nur berechnen, wenn auch gültig
uv = PositionOf(e);
}
else
{
uv = GeoPoint2D.Origin;
}
return(res);
}
private ICurve[] Intersect(IGeoObject go, PlaneSurface pls)
{
Plane plane = pls.Plane;
if (go is Solid)
{
BoundingCube bc = go.GetBoundingCube();
if (bc.Interferes(plane))
{
return((go as Solid).GetPlaneIntersection(pls));
}
}
if (go is Shell)
{
BoundingCube bc = go.GetBoundingCube();
if (bc.Interferes(plane))
{
return((go as Shell).GetPlaneIntersection(pls));
}
}
if (go is Face)
{
BoundingCube bc = go.GetBoundingCube();
if (bc.Interferes(plane))
{
return((go as Face).GetPlaneIntersection(pls));
}
}
List <ICurve> res = new List <ICurve>();
if (go is Block)
{
for (int i = 0; i < go.NumChildren; i++)
{
res.AddRange(Intersect(go.Child(i), pls));
}
}
return(res.ToArray());
}
/// <summary>
/// Overrides <see cref="CADability.GeoObject.IGeoObjectImpl.HitTest (ref BoundingCube, double)"/>
/// </summary>
/// <param name="cube"></param>
/// <param name="precision"></param>
/// <returns></returns>
public override bool HitTest(ref BoundingCube cube, double precision)
{
return(cube.Interferes(new GeoPoint[] { location, location + directionWidth, location + directionWidth + directionHeight, location + directionHeight }, new int[] { 0, 1, 2, 0, 2, 3 }));
}
/// <summary>
/// Overrides <see cref="CADability.GeoObject.IGeoObjectImpl.HitTest (ref BoundingCube, double)"/>
/// </summary>
/// <param name="cube"></param>
/// <param name="precision"></param>
/// <returns></returns>
public override bool HitTest(ref BoundingCube cube, double precision)
{
return(cube.Interferes(ref startPoint, ref endPoint));
}
bool IOctTreeInsertable.HitTest(ref BoundingCube cube, double precision)
{
return(cube.Interferes(p1, p2, p3, p4));
}
bool IOctTreeInsertable.HitTest(ref BoundingCube cube, double precision)
{
return(cube.Interferes(ref startPoint, ref endPoint));
}
bool IOctTreeInsertable.HitTest(ref BoundingCube cube, double precision)
{
return(cube.Interferes(start, dir, precision, true));
}