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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Bnd_Sphere.hxx>
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Bnd_Sphere::Bnd_Sphere()
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: myCenter (0., 0., 0.),
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myRadius (0.),
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myIsValid (Standard_False),
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myU (0),
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myV (0)
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{}
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Bnd_Sphere::Bnd_Sphere( const gp_XYZ& theCenter, const Standard_Real theRadius,
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const Standard_Integer theU, const Standard_Integer theV )
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: myCenter (theCenter),
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myRadius (theRadius),
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myIsValid (Standard_False),
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myU (theU),
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myV (theV)
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{}
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void Bnd_Sphere::SquareDistances( const gp_XYZ& theXYZ,
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Standard_Real& theMin, Standard_Real& theMax ) const
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{
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theMax = ( theXYZ - myCenter ).SquareModulus();
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theMin = ( theMax - myRadius <0 ? 0.0 : theMax - myRadius * myRadius );
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theMax += myRadius * myRadius;
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}
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void Bnd_Sphere::Distances( const gp_XYZ& theXYZ,
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Standard_Real& theMin, Standard_Real& theMax ) const
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{
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theMax = ( theXYZ - myCenter ).Modulus();
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theMin = ( theMax - myRadius <0 ? 0.0 : theMax - myRadius );
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theMax += myRadius;
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}
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Standard_Boolean Bnd_Sphere::Project(const gp_XYZ& theNode, gp_XYZ& theProjNode, Standard_Real& theDist, Standard_Boolean& theInside) const
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{
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theProjNode = myCenter;
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theDist = ( theNode - theProjNode ).Modulus();
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theInside = Standard_True;
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return Standard_True;
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}
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Standard_Real Bnd_Sphere::Distance(const gp_XYZ& theNode) const
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{
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return ( theNode - myCenter ).Modulus();
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}
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Standard_Real Bnd_Sphere::SquareDistance(const gp_XYZ& theNode) const
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{
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return ( theNode - myCenter ).SquareModulus();
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}
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void Bnd_Sphere::Add( const Bnd_Sphere& theOther)
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{
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if ( myRadius < 0.0 )
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{
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// not initialised yet
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*this = theOther;
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return;
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}
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const Standard_Real aDist = (myCenter - theOther.myCenter).Modulus();
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if ( myRadius + aDist <= theOther.myRadius )
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{
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// the other sphere is larger and encloses this
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*this = theOther;
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return;
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}
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if ( theOther.myRadius + aDist <= myRadius )
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return; // this sphere encloses other
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// expansion
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const Standard_Real dfR = ( aDist + myRadius + theOther.myRadius ) * 0.5;
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const Standard_Real aParamOnDiam = ( dfR - myRadius ) / aDist;
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myCenter = myCenter * ( 1.0 - aParamOnDiam ) + theOther.myCenter * aParamOnDiam;
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myRadius = dfR;
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myIsValid = Standard_False;
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}
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Standard_Boolean Bnd_Sphere::IsOut( const Bnd_Sphere& theOther ) const
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{
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return (myCenter - theOther.myCenter).SquareModulus() > (myRadius + theOther.myRadius) * (myRadius + theOther.myRadius);
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}
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Standard_Boolean Bnd_Sphere::IsOut( const gp_XYZ& theXYZ,
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Standard_Real& theMaxDist) const
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{
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Standard_Real aCurMinDist, aCurMaxDist;
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Distances( theXYZ, aCurMinDist, aCurMaxDist );
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if ( aCurMinDist > theMaxDist )
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return Standard_True;
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if( myIsValid && aCurMaxDist < theMaxDist )
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theMaxDist = aCurMaxDist;
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return Standard_False;
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}
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Standard_Real Bnd_Sphere::SquareExtent() const
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{
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return 4 * myRadius * myRadius;
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}
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