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0027884: Modeling Algorithms - Possible improvement for 2d classifier

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Added the implementation of bndbox<->line and bndbox<->segment intersections for 2D to Bnd_Box2d
Added the speedup for 2d classification to BRepClass_Intersector.cxx
Added the test for our improvement
This commit is contained in:
abulyche
2021-07-14 23:40:32 +03:00
committed by bugmaster
parent fceeb82917
commit 715fcb5a92
14 changed files with 513 additions and 101 deletions
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75
src/Bnd/Bnd_Box2d.cxx
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@@ -18,7 +18,6 @@
#include <Bnd_Box2d.hxx>
#include <gp.hxx>
#include <gp_Dir2d.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Trsf2d.hxx>
#include <Standard_ConstructionError.hxx>
#include <Standard_Stream.hxx>
@@ -251,6 +250,80 @@ Standard_Boolean Bnd_Box2d::IsOut (const gp_Pnt2d& P) const
}
}
//=======================================================================
//function : IsOut
//purpose :
//=======================================================================
Standard_Boolean Bnd_Box2d::IsOut(const gp_Lin2d& theL) const
{
if (IsWhole())
{
return Standard_False;
}
if (IsVoid())
{
return Standard_True;
}
Standard_Real aXMin, aXMax, aYMin, aYMax;
Get(aXMin, aYMin, aXMax, aYMax);
gp_XY aCenter((aXMin + aXMax) / 2, (aYMin + aYMax) / 2);
gp_XY aHeigh(Abs(aXMax - aCenter.X()), Abs(aYMax - aCenter.Y()));
const Standard_Real aProd[3] = {
theL.Direction().XY() ^ (aCenter - theL.Location().XY()),
theL.Direction().X() * aHeigh.Y(),
theL.Direction().Y() * aHeigh.X()
};
Standard_Boolean aStatus = (Abs(aProd[0]) > (Abs(aProd[1]) + Abs(aProd[2])));
return aStatus;
}
//=======================================================================
//function : IsOut
//purpose :
//=======================================================================
Standard_Boolean Bnd_Box2d::IsOut(const gp_Pnt2d& theP0, const gp_Pnt2d& theP1) const
{
if (IsWhole())
{
return Standard_False;
}
if (IsVoid())
{
return Standard_True;
}
Standard_Boolean aStatus = Standard_True;
Standard_Real aLocXMin, aLocXMax, aLocYMin, aLocYMax;
Get(aLocXMin, aLocYMin, aLocXMax, aLocYMax);
//// Intersect the line containing the segment.
const gp_XY aSegDelta(theP1.XY() - theP0.XY());
gp_XY aCenter((aLocXMin + aLocXMax) / 2, (aLocYMin + aLocYMax) / 2);
gp_XY aHeigh(Abs(aLocXMax - aCenter.X()), Abs(aLocYMax - aCenter.Y()));
const Standard_Real aProd[3] = {
aSegDelta ^ (aCenter - theP0.XY()),
aSegDelta.X() * aHeigh.Y(),
aSegDelta.Y() * aHeigh.X()
};
if((Abs(aProd[0]) <= (Abs(aProd[1]) + Abs(aProd[2]))))
{
// Intersection with line detected; check the segment as bounding box
const gp_XY aHSeg(0.5 * aSegDelta.X(), 0.5 * aSegDelta.Y());
const gp_XY aHSegAbs(Abs(aHSeg.X()), Abs(aHSeg.Y()));
aStatus = ((Abs((theP0.XY() + aHSeg - aCenter).X()) >
(aHeigh + aHSegAbs).X()) || (Abs((theP0.XY() + aHSeg - aCenter).Y()) >
(aHeigh + aHSegAbs).Y()));
}
return aStatus;
}
//=======================================================================
//function : IsOut
//purpose :