1 files changed, 92 insertions, 0 deletions
diff --git a/kpovmodeler/pmdistancecontrolpoint.cpp b/kpovmodeler/pmdistancecontrolpoint.cpp
new file mode 100644
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+++ b/kpovmodeler/pmdistancecontrolpoint.cpp
@@ -0,0 +1,92 @@
+/*
+**************************************************************************
+                                 description
+                             --------------------
+    copyright            : (C) 2000-2001 by Andreas Zehender
+    email                : zehender@kde.org
+**************************************************************************
+
+**************************************************************************
+*                                                                        *
+*  This program is free software; you can redistribute it and/or modify  *
+*  it under the terms of the GNU General Public License as published by  *
+*  the Free Software Foundation; either version 2 of the License, or     *
+*  (at your option) any later version.                                   *
+*                                                                        *
+**************************************************************************/
+
+#include "pmdistancecontrolpoint.h"
+#include "pmmath.h"
+#include "pmdebug.h"
+#include <math.h>
+
+
+PMDistanceControlPoint::PMDistanceControlPoint( PMControlPoint* base,
+                          const PMVector& direction, double distance,
+                          int id, const QString& description,
+                          bool showExtraLine )
+      : PMControlPoint( id, description )
+{
+   m_distance = distance;
+   m_pBasePoint = base;
+   m_direction = direction;
+   m_directionLength = direction.abs( );
+   m_extraLine = showExtraLine;
+}
+
+PMDistanceControlPoint::PMDistanceControlPoint( const PMVector& base,
+                          const PMVector& direction, double distance,
+                          int id, const QString& description,
+                          bool showExtraLine )
+      : PMControlPoint( id, description )
+{
+   m_distance = distance;
+   m_constBasePoint = base;
+   m_pBasePoint = 0;
+   m_direction = direction;
+   m_directionLength = direction.abs( );
+   m_extraLine = showExtraLine;
+}
+
+PMVector PMDistanceControlPoint::position( ) const
+{
+   if( m_pBasePoint )
+      return m_pBasePoint->position( ) + m_direction * m_distance;
+   return m_constBasePoint + m_direction * m_distance;
+}
+
+PMVector PMDistanceControlPoint::basePoint( ) const
+{
+   if( m_pBasePoint )
+      return m_pBasePoint->position( );
+   return m_constBasePoint;
+}
+
+void PMDistanceControlPoint::setDirection( const PMVector& direction )
+{
+   m_direction = direction;
+   m_directionLength = direction.abs( );
+}
+
+void PMDistanceControlPoint::graphicalChangeStarted( )
+{
+   m_originalDistance = m_distance;
+}
+
+void PMDistanceControlPoint::graphicalChange( const PMVector& startPoint,
+                                        const PMVector& /*viewNormal*/,
+                                        const PMVector& endPoint )
+{
+   if( !approxZero( m_directionLength ) )
+      m_distance = m_originalDistance +
+                   PMVector::dot( endPoint - startPoint, m_direction )
+                   / ( m_directionLength * m_directionLength );
+}
+
+void PMDistanceControlPoint::snapToGrid( )
+{
+   double d = moveGrid( );
+   if( !approxZero( d ) )
+      m_distance = rint( m_distance / d ) * d;
+   setChanged( );
+}