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0029311: Implementation of the Oriented Bounding Boxes (OBB) functionality
1. The class Bnd_OBB has been created to describe the Oriented Bounding Box. 2. Several key methods have been implemented: Bnd_OBB::IsOut(...), Bnd_OBB::Add(...) and Bnd_OBB::Enlarge(...). 3. Interface of Bnd_Box class has changed. New methods have been created. See Bnd_Box.hxx for detailed information. 4. BRepBndLib and Draw_Box classes have been amended in order to provide correct work with Bnd_OBB class. 5. Interface of "bounding" DRAW-command has been changed. Please see help for detailed information. 6. New DRAW-command "isbbinterf" has been created. Please see help for detailed information. 7. "boundingstr" and "optbounding" DRAW-commands have been eliminated because their function can be made by "bounding" DRAW-command (e.g. see tests/bugs/vis/buc60857 or samples/tcl/snowflake.tcl test cases). 8. Documentation has been updated.
This commit is contained in:
nbv
bugmaster
@@ -24,116 +24,111 @@
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IMPLEMENT_STANDARD_RTTIEXT(Draw_Box,Draw_Drawable3D)
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//=======================================================================
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//function : Draw_Box
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//function : Constructor
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//purpose :
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//=======================================================================
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Draw_Box::Draw_Box(const gp_Pnt& p1, const gp_Pnt& p2, const Draw_Color& col) :
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myFirst(p1), myLast(p2),myColor(col)
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Draw_Box::Draw_Box(const Bnd_OBB& theOBB,
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const Draw_Color& theColor) :myOBB(theOBB), myColor(theColor)
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{
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Standard_Real t;
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if (myLast.X() < myFirst.X()) {
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t = myFirst.X();
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myFirst.SetX(myLast.X());
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myLast.SetX(t);
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}
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if (myLast.Y() < myFirst.Y()) {
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t = myFirst.Y();
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myFirst.SetY(myLast.Y());
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myLast.SetY(t);
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}
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if (myLast.Z() < myFirst.Z()) {
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t = myFirst.Z();
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myFirst.SetZ(myLast.Z());
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myLast.SetZ(t);
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}
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}
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//=======================================================================
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//function : ToWCS
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//purpose :
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//=======================================================================
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void Draw_Box::ToWCS(const Standard_Real theX,
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const Standard_Real theY,
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const Standard_Real theZ,
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gp_Pnt& theP) const
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{
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const gp_XYZ & aC = myOBB.Center();
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const gp_XYZ aXDir = myOBB.XDirection(),
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aYDir = myOBB.YDirection(),
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aZDir = myOBB.ZDirection();
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theP.SetXYZ(aC + theX*aXDir + theY*aYDir + theZ*aZDir);
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}
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//=======================================================================
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//function : MoveX
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//purpose :
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//=======================================================================
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void Draw_Box::MoveX(const Standard_Real theShift, gp_Pnt& thePt) const
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{
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const gp_XYZ aXDir = myOBB.XDirection();
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thePt.SetXYZ(thePt.XYZ() + theShift*aXDir);
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}
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//=======================================================================
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//function : MoveY
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//purpose :
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//=======================================================================
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void Draw_Box::MoveY(const Standard_Real theShift, gp_Pnt& thePt) const
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{
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const gp_XYZ aYDir = myOBB.YDirection();
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thePt.SetXYZ(thePt.XYZ() + theShift*aYDir);
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}
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//=======================================================================
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//function : MoveZ
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//purpose :
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//=======================================================================
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void Draw_Box::MoveZ(const Standard_Real theShift, gp_Pnt& thePt) const
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{
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const gp_XYZ aZDir = myOBB.ZDirection();
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thePt.SetXYZ(thePt.XYZ() + theShift*aZDir);
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}
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//=======================================================================
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//function : DrawOn
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//purpose :
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//=======================================================================
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void Draw_Box::DrawOn(Draw_Display& dis) const
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void Draw_Box::DrawOn(Draw_Display& theDIS) const
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{
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dis.SetColor(myColor);
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gp_Pnt P = myFirst;
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if(myOBB.IsVoid())
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{
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return;
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}
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dis.MoveTo(P);
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P.SetX(myLast.X());
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dis.DrawTo(P);
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P.SetY(myLast.Y());
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dis.DrawTo(P);
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P.SetZ(myLast.Z());
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dis.DrawTo(P);
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P.SetX(myFirst.X());
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dis.DrawTo(P);
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P.SetY(myFirst.Y());
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dis.DrawTo(P);
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P.SetZ(myFirst.Z());
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dis.DrawTo(P);
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P.SetX(myLast.X());
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dis.MoveTo(P);
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P.SetZ(myLast.Z());
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dis.DrawTo(P);
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P.SetX(myFirst.X());
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dis.DrawTo(P);
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theDIS.SetColor(myColor);
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P.SetX(myLast.X());
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dis.MoveTo(P);
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P.SetY(myLast.Y());
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dis.DrawTo(P);
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const Standard_Real aHx = myOBB.XHSize(),
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aHy = myOBB.YHSize(),
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aHz = myOBB.ZHSize();
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gp_Pnt aP;
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ToWCS(-aHx, -aHy, -aHz, aP);
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theDIS.MoveTo(aP);
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for(Standard_Integer i = 0; i<2; i++)
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{
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MoveX(2.0*aHx, aP);
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theDIS.DrawTo(aP);
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MoveY(2.0*aHy, aP);
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theDIS.DrawTo(aP);
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MoveX(-2.0*aHx, aP);
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theDIS.DrawTo(aP);
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MoveY(-2.0*aHy, aP);
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theDIS.DrawTo(aP);
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ToWCS(-aHx, -aHy, aHz, aP);
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theDIS.MoveTo(aP);
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}
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P.SetX(myFirst.X());
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dis.MoveTo(P);
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P.SetZ(myFirst.Z());
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dis.DrawTo(P);
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P.SetY(myFirst.Y());
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dis.DrawTo(P);
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P.SetY(myLast.Y());
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dis.MoveTo(P);
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P.SetX(myLast.X());
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dis.DrawTo(P);
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}
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//=======================================================================
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//function : First
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//purpose :
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//=======================================================================
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const gp_Pnt& Draw_Box::First() const
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{
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return myFirst;
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}
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//=======================================================================
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//function : First
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//purpose :
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//=======================================================================
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void Draw_Box::First(const gp_Pnt& P)
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{
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myFirst = P;
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}
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//=======================================================================
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//function : Last
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//purpose :
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//=======================================================================
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const gp_Pnt& Draw_Box::Last() const
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{
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return myLast;
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}
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//=======================================================================
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//function : Last
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//purpose :
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//=======================================================================
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void Draw_Box::Last(const gp_Pnt& P)
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{
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myLast = P;
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for(Standard_Integer i = 0; i < 4; i++)
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{
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switch(i)
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{
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case 0: ToWCS(-aHx, -aHy, -aHz, aP); break;
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case 1: ToWCS(aHx, -aHy, -aHz, aP); break;
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case 2: ToWCS(aHx, aHy, -aHz, aP); break;
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case 3: ToWCS(-aHx, aHy, -aHz, aP); break;
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default: break;
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}
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theDIS.MoveTo(aP);
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MoveZ(2.0*aHz, aP);
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theDIS.DrawTo(aP);
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}
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}
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@@ -20,10 +20,9 @@
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <gp_Pnt.hxx>
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#include <Bnd_OBB.hxx>
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#include <Draw_Color.hxx>
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#include <Draw_Drawable3D.hxx>
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class gp_Pnt;
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class Draw_Color;
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class Draw_Display;
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@@ -34,46 +33,41 @@ DEFINE_STANDARD_HANDLE(Draw_Box, Draw_Drawable3D)
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//! a 3d box
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class Draw_Box : public Draw_Drawable3D
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{
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public:
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//! Constructor
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Standard_EXPORT Draw_Box(const Bnd_OBB& theOBB,
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const Draw_Color& theColor);
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//! Draws myOBB
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Standard_EXPORT void DrawOn (Draw_Display& theDis) const Standard_OVERRIDE;
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Standard_EXPORT Draw_Box(const gp_Pnt& p1, const gp_Pnt& p2, const Draw_Color& col);
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Standard_EXPORT void DrawOn (Draw_Display& dis) const Standard_OVERRIDE;
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Standard_EXPORT const gp_Pnt& First() const;
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Standard_EXPORT void First (const gp_Pnt& P);
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Standard_EXPORT const gp_Pnt& Last() const;
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Standard_EXPORT void Last (const gp_Pnt& P);
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DEFINE_STANDARD_RTTIEXT(Draw_Box,Draw_Drawable3D)
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protected:
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//! Converts the point (theX, theY, theZ) in local coordinate system to WCS.
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void ToWCS(const Standard_Real theX,
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const Standard_Real theY,
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const Standard_Real theZ,
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gp_Pnt& theP) const;
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//! Moves the point thePt along X-direction of myOBB on the distance theShift.
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void MoveX(const Standard_Real theShift, gp_Pnt& thePt) const;
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//! Moves the point thePt along Y-direction of myOBB on the distance theShift.
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void MoveY(const Standard_Real theShift, gp_Pnt& thePt) const;
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//! Moves the point thePt along Z-direction of myOBB on the distance theShift.
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void MoveZ(const Standard_Real theShift, gp_Pnt& thePt) const;
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private:
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//! Oriented bounding box
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Bnd_OBB myOBB;
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gp_Pnt myFirst;
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gp_Pnt myLast;
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//! Color value
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Draw_Color myColor;
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};
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#endif // _Draw_Box_HeaderFile
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