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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/pmpoint.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/pmpoint.cpp')
-rw-r--r--kpovmodeler/pmpoint.cpp98
1 files changed, 98 insertions, 0 deletions
diff --git a/kpovmodeler/pmpoint.cpp b/kpovmodeler/pmpoint.cpp
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+++ b/kpovmodeler/pmpoint.cpp
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+/*
+**************************************************************************
+ 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 "pmpoint.h"
+#include "pmvector.h"
+#include "pmmatrix.h"
+#include "pmmath.h"
+
+
+PMPoint::PMPoint( )
+{
+ m_coord[0] = 0;
+ m_coord[1] = 0;
+ m_coord[2] = 0;
+}
+
+PMPoint::PMPoint( GLdouble x, GLdouble y, GLdouble z )
+{
+ m_coord[0] = x;
+ m_coord[1] = y;
+ m_coord[2] = z;
+}
+
+PMPoint::PMPoint( const PMVector& v )
+{
+ if( v.size( ) == 3 )
+ {
+ m_coord[0] = v[0];
+ m_coord[1] = v[1];
+ m_coord[2] = v[2];
+ }
+ else
+ {
+ m_coord[0] = 0;
+ m_coord[1] = 0;
+ m_coord[2] = 0;
+ }
+}
+
+PMPoint::PMPoint( const PMPoint& p )
+{
+ m_coord[0] = p.m_coord[0];
+ m_coord[1] = p.m_coord[1];
+ m_coord[2] = p.m_coord[2];
+}
+
+PMPoint& PMPoint::operator= ( const PMPoint& p )
+{
+ m_coord[0] = p.m_coord[0];
+ m_coord[1] = p.m_coord[1];
+ m_coord[2] = p.m_coord[2];
+
+ return *this;
+}
+
+void PMPoint::transform( const PMMatrix& m )
+{
+ (*this) = m * (*this);
+}
+
+PMPoint operator* ( const PMMatrix& m, const PMPoint& p )
+{
+ PMPoint result;
+ int c, i;
+ // for homogenous coordinates
+ double u;
+
+ for( c = 0; c < 3; c++ )
+ {
+ result.m_coord[c] = 0.0;
+ for( i = 0; i < 4; i++ )
+ result.m_coord[c] += m[i][c] * ( i<3 ? p[i] : 1.0 );
+ }
+
+ u = 0.0;
+ for( i = 0; i < 4; i++ )
+ u += m[i][3] * ( i<3 ? p[i] : 1.0 );
+ if( !approxZero( u ) )
+ for( i = 0; i < 3; i++ )
+ result.m_coord[i] /= u;
+
+ return result;
+}