Dario Sassi
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
//----------------------------------------------------------------------------
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// EgalTech 2020-2020
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//----------------------------------------------------------------------------
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// File : IntersLineBox.cpp Data : 07.05.20 Versione : 2.2e1
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// Contenuto : Implementazione della intersezione linea/box.
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//
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//
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//
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// Modifiche : 07.05.20 DS Creazione modulo.
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//
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//
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//----------------------------------------------------------------------------
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//--------------------------- Include ----------------------------------------
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#include "stdafx.h"
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#include "SurfTriMesh.h"
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#include "/EgtDev/Include/EGkIntersPlaneBox.h"
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#include "/EgtDev/Include/EGkIntersPlaneSurfTm.h"
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using namespace std ;
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//----------------------------------------------------------------------------
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bool
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IntersPlaneBox( const Point3d& ptOn, const Vector3d& vtN, const BBox3d& b3Box,
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PNTVECTOR& vPnt, BIPNTVECTOR& vBpt, TRIA3DVECTOR& vTria)
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{
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// Creo il piano
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Plane3d plPlane ;
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if ( ! plPlane.Set( ptOn, vtN))
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return false ;
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// Recupero i dati del Box
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Point3d ptMin ;
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double dDimX, dDimY, dDimZ ;
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if ( ! b3Box.GetMinDim( ptMin, dDimX, dDimY, dDimZ))
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return false ;
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// Contorno di base
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PolyLine PL ;
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PL.AddUPoint( 0, ptMin) ;
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PL.AddUPoint( 1, ptMin + Vector3d( dDimX, 0, 0)) ;
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PL.AddUPoint( 2, ptMin + Vector3d( dDimX, dDimY, 0)) ;
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PL.AddUPoint( 3, ptMin + Vector3d( 0, dDimY, 0)) ;
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PL.Close() ;
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// Vettore altezza
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Vector3d vtExtr( 0, 0, dDimZ) ;
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// Creo la superficie trimesh equivalente
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SurfTriMesh Stm ;
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if ( ! Stm.CreateByExtrusion( PL, vtExtr))
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return false ;
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SurfTriMesh StmBot ;
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if ( ! StmBot.CreateByFlatContour( PL))
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return false ;
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StmBot.Invert() ;
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SurfTriMesh StmTop ;
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if ( ! StmTop.CreateByFlatContour( PL))
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return false ;
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StmTop.Translate( vtExtr) ;
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if ( ! Stm.DoSewing( StmBot) || ! Stm.DoSewing( StmTop))
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return false ;
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// Calcolo l'intersezione
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return IntersPlaneSurfTm( plPlane, Stm, vPnt, vBpt, vTria) ;
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}
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