EgtGeomKernel 1.4l2 : Aggiunte ApproxWithLines su Curve Semplici.

2013-12-21 16:18:29 +00:00
parent 6287c113b4
commit 30f8c71894
21 changed files with 548 additions and 105 deletions
@@ -0,0 +1,136 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2013-2013
+//----------------------------------------------------------------------------
+// File : DistPointLine.cpp       Data : 17.12.13          Versione : 1.4l1
+// Contenuto : Implementazione dell'oggetto distanza punto da linea/segmento.
+//
+// !!! ToDo : Gestire i sistemi di riferimento.
+//
+// Modifiche : 17.12.13 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+//--------------------------- Include ----------------------------------------
+#include "stdafx.h"
+#include "\EgtDev\Include\EGkDistPointLine.h"
+
+
+//----------------------------------------------------------------------------
+DistPointLine::DistPointLine( void)
+{
+   m_dLen = 0 ;
+   m_bIsSegment = false ;
+   m_dSqDist = - 1 ;
+   m_dDist = - 1 ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointLine::Set( const Point3d& ptP, const Point3d& ptIni, const Point3d& ptFin, bool bIsSegment)
+{
+   m_ptP = ptP ;
+   m_ptIni = ptIni ;
+   m_dLen = Dist( ptIni, ptFin) ;
+   if ( m_dLen > EPS_SMALL)
+      m_vtDir = ( ptFin - ptIni) / m_dLen ;
+   else
+      m_vtDir.Set( 0, 0, 0) ;
+   m_bIsSegment = bIsSegment ;
+   m_dSqDist = - 1 ;
+   m_dDist = - 1 ;
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointLine::SetPoint( const Point3d& ptP)
+{
+   m_ptP = ptP ;
+   m_dSqDist = - 1 ;
+   m_dDist = - 1 ;
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointLine::SetLine( const Point3d& ptIni, const Point3d& ptFin, bool bIsSegment)
+{
+   m_ptIni = ptIni ;
+   m_dLen = Dist( ptIni, ptFin) ;
+   if ( m_dLen > EPS_SMALL)
+      m_vtDir = ( ptFin - ptIni) / m_dLen ;
+   else
+      m_vtDir.Set( 0, 0, 0) ;
+   m_bIsSegment = bIsSegment ;
+   m_dSqDist = - 1 ;
+   m_dDist = - 1 ;
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointLine::Calculate( void)
+{
+  // se la linea è un punto
+   if ( m_dLen < EPS_SMALL)
+      m_ptMinDist = m_ptIni ;
+
+  // se la linea è illimitata
+   else if ( ! m_bIsSegment)
+      m_ptMinDist = m_ptIni + m_vtDir * ( m_vtDir * ( m_ptP - m_ptIni)) ;
+
+  // altrimenti la linea è un segmento
+   else {
+      double dProiez = m_vtDir * ( m_ptP - m_ptIni) ;
+      if ( dProiez <= 0)
+         m_ptMinDist = m_ptIni ;
+      else if ( dProiez >= m_dLen)
+         m_ptMinDist = m_ptIni + m_vtDir * m_dLen ;
+      else
+         m_ptMinDist = m_ptIni + m_vtDir * dProiez ;
+   }
+
+  // calcolo il quadrato della distanza
+   m_dSqDist = SqDist( m_ptP, m_ptMinDist) ;
+
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+double
+DistPointLine::GetSqDist( void)
+{
+  // se necessario, faccio eseguire i conti
+   if ( m_dSqDist < 0)
+      Calculate() ;
+
+   return m_dSqDist ;
+}
+
+//----------------------------------------------------------------------------
+double
+DistPointLine::GetDist( void)
+{
+  // se necessario, faccio eseguire i conti
+   if ( m_dSqDist < 0)
+      Calculate() ;
+   if ( m_dDist < 0)
+      m_dDist = sqrt( m_dSqDist) ;
+
+   return m_dDist ;
+}
+
+//----------------------------------------------------------------------------
+const Point3d&
+DistPointLine::GetPointMinDist( void)
+{
+  // se necessario, faccio eseguire i conti
+   if ( m_dSqDist < 0)
+      Calculate() ;
+
+   return m_ptMinDist ;
+}