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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /kpovmodeler/pmplanenormalcontrolpoint.cpp
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kpovmodeler/pmplanenormalcontrolpoint.cpp')
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diff --git a/kpovmodeler/pmplanenormalcontrolpoint.cpp b/kpovmodeler/pmplanenormalcontrolpoint.cpp
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+/*
+**************************************************************************
+ description
+ --------------------
+ copyright : (C) 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 "pmplanenormalcontrolpoint.h"
+#include "pmdistancecontrolpoint.h"
+#include "pmmath.h"
+#include <math.h>
+
+PMPlaneNormalControlPoint::PMPlaneNormalControlPoint( PMDistanceControlPoint* d,
+ const PMVector& normal, int id,
+ const QString& description )
+ : PMControlPoint( id, description )
+{
+ m_normal = normal;
+ m_pDistancePoint = d;
+}
+
+PMVector PMPlaneNormalControlPoint::position( ) const
+{
+ return m_normal * ( m_pDistancePoint->distance( ) + 1.0 );
+}
+
+PMVector PMPlaneNormalControlPoint::extraLineStart( ) const
+{
+ return m_normal * m_pDistancePoint->distance( );
+}
+
+PMVector PMPlaneNormalControlPoint::extraLineEnd( ) const
+{
+ return position( );
+}
+
+void PMPlaneNormalControlPoint::graphicalChangeStarted( )
+{
+ m_originalNormal = m_normal;
+ m_originalDistance = m_pDistancePoint->distance( );
+}
+
+void PMPlaneNormalControlPoint::graphicalChange( const PMVector& startPoint,
+ const PMVector& /*viewNormal*/,
+ const PMVector& endPoint )
+{
+ PMVector p = m_originalNormal * ( m_originalDistance + 1 )
+ + endPoint - startPoint;
+ double pabs = p.abs( );
+
+ if( !approxZero( pabs ) )
+ {
+ PMVector np = p / pabs;
+ double nd = m_originalNormal.abs( ) * m_originalDistance;
+ PMVector normal = p - np * fabs( nd );
+ double nl = normal.abs( );
+
+ if( !approxZero( nl ) )
+ {
+ if( ( m_originalDistance * ( pabs - fabs( nd ) ) ) < 0 )
+ nd = -nd;
+ nd /= nl;
+ m_pDistancePoint->setDistance( nd );
+ m_pDistancePoint->setDirection( normal );
+ m_normal = normal;
+ }
+ }
+}
+
+double PMPlaneNormalControlPoint::distance( ) const
+{
+ return m_pDistancePoint->distance( );
+}
+
+void PMPlaneNormalControlPoint::snapToGrid( )
+{
+ int i;
+ double d = moveGrid( );
+ if( !approxZero( d ) )
+ for( i = 0; i < 3; i++ )
+ m_normal[i] = rint( m_normal[i] / d ) * d;
+ setChanged( );
+}