QVector< QVector3D > Terrain::smoothedPositions( const QVector< QVector3D > & in, const QSize & size )
{
QVector< QVector3D > out( in.size() );
#define inPosition(x,y) (in[(x)+(y)*size.width()])
#define outPosition(x,y) (out[(x)+(y)*size.width()])
for( int w=0; w<mMapSize.width(); w++ )
outPosition( w, 0 ) = inPosition( w, 0 );
for( int h=1; h<mMapSize.height()-1; h++ )
{
outPosition( 0, h ) = inPosition( 0, h );
for( int w=1; w<mMapSize.width()-1; w++ )
{
QVector3D smoothed = QVector3D(0,0,0);
smoothed += inPosition( w-1, h-1 );
smoothed += inPosition( w , h-1 );
smoothed += inPosition( w+1, h-1 );
smoothed += inPosition( w-1, h );
smoothed += inPosition( w , h )*4.0;
smoothed += inPosition( w+1, h );
smoothed += inPosition( w-1, h+1 );
smoothed += inPosition( w , h+1 );
smoothed += inPosition( w+1, h+1 );
smoothed /= 12.0f;
outPosition( w, h ) = smoothed;
}
outPosition( mMapSize.width()-1, h ) = inPosition( mMapSize.width()-1, h );
}
for( int w=0; w<mMapSize.width(); w++ )
outPosition( w, mMapSize.height()-1 ) = inPosition( w, mMapSize.height()-1 );
#undef inPosition
#undef outPosition
return out;
}
nv_math::vec4f Node::worldPosition(){
nv_math::vec4f outPosition(0.0, 0.0, 0.0, 1.0);
return m_transform(outPosition);
}