sg_normals.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2017 Cirilo Bernardo <[email protected]>
 * Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <iostream>
#include <sstream>
#include <wx/log.h>
 
#include "3d_cache/sg/sg_normals.h"
#include "3d_cache/sg/sg_helpers.h"
 
 
SGNORMALS::SGNORMALS( SGNODE* aParent ) : SGNODE( aParent )
{
 m_SGtype = S3D::SGTYPE_NORMALS;
 
 if( nullptr != aParent && S3D::SGTYPE_FACESET != aParent->GetNodeType() )
 {
 m_Parent = nullptr;
 
 wxLogTrace( MASK_3D_SG, wxT( "%s:%s:%d * [BUG] inappropriate parent to SGNORMALS "
 "(type %d)" ),
 __FILE__, __FUNCTION__, __LINE__,
 aParent->GetNodeType() );
 }
 else if( nullptr != aParent && S3D::SGTYPE_FACESET == aParent->GetNodeType() )
 {
 m_Parent->AddChildNode( this );
 }
}
 
 
SGNORMALS::~SGNORMALS()
{
 norms.clear();
}
 
 
bool SGNORMALS::SetParent( SGNODE* aParent, bool notify )
{
 if( nullptr != m_Parent )
 {
 if( aParent == m_Parent )
 return true;
 
 // handle the change in parents
 if( notify )
 m_Parent->unlinkChildNode( this );
 
 m_Parent = nullptr;
 
 if( nullptr == aParent )
 return true;
 }
 
 // only a SGFACESET may be parent to a SGNORMALS
 if( nullptr != aParent && S3D::SGTYPE_FACESET != aParent->GetNodeType() )
 return false;
 
 m_Parent = aParent;
 
 if( m_Parent )
 m_Parent->AddChildNode( this );
 
 return true;
}
 
 
SGNODE* SGNORMALS::FindNode( const char* aNodeName, const SGNODE* aCaller ) noexcept
{
 if( nullptr == aNodeName || 0 == aNodeName[0] )
 return nullptr;
 
 if( !m_Name.compare( aNodeName ) )
 return this;
 
 return nullptr;
}
 
 
void SGNORMALS::unlinkChildNode( const SGNODE* aCaller ) noexcept
{
 wxCHECK( false, /* void */ );
}
 
 
void SGNORMALS::unlinkRefNode( const SGNODE* aCaller ) noexcept
{
 wxCHECK( false, /* void */ );
}
 
 
bool SGNORMALS::AddRefNode( SGNODE* aNode ) noexcept
{
 wxCHECK( false, false );
 
 return false;
}
 
 
bool SGNORMALS::AddChildNode( SGNODE* aNode ) noexcept
{
 wxCHECK( false, false );
 
 return false;
}
 
 
bool SGNORMALS::GetNormalList( size_t& aListSize, SGVECTOR*& aNormalList )
{
 if( norms.empty() )
 {
 aListSize = 0;
 aNormalList = nullptr;
 return false;
 }
 
 aListSize = norms.size();
 aNormalList = &norms[0];
 return true;
}
 
 
void SGNORMALS::SetNormalList( size_t aListSize, const SGVECTOR* aNormalList )
{
 norms.clear();
 
 if( 0 == aListSize || nullptr == aNormalList )
 return;
 
 for( int i = 0; i < (int)aListSize; ++i )
 norms.push_back( aNormalList[i] );
}
 
 
void SGNORMALS::AddNormal( double aXValue, double aYValue, double aZValue )
{
 norms.emplace_back( aXValue, aYValue, aZValue );
}
 
 
void SGNORMALS::AddNormal( const SGVECTOR& aNormal )
{
 norms.push_back( aNormal );
}
 
 
void SGNORMALS::ReNameNodes( void )
{
 m_written = false;
 
 // rename this node
 m_Name.clear();
 GetName();
}
 
 
bool SGNORMALS::WriteVRML( std::ostream& aFile, bool aReuseFlag )
{
 if( norms.empty() )
 return false;
 
 if( aReuseFlag )
 {
 if( !m_written )
 {
 aFile << " normal DEF " << GetName() << " Normal { vector [\n ";
 m_written = true;
 }
 else
 {
 aFile << " normal USE " << GetName() << "\n";
 return true;
 }
 }
 else
 {
 aFile << " normal Normal { vector [\n ";
 }
 
 std::string tmp;
 size_t n = norms.size();
 bool nline = false;
 
 for( size_t i = 0; i < n; )
 {
 S3D::FormatVector( tmp, norms[i] );
 aFile << tmp ;
 ++i;
 
 if( i < n )
 {
 aFile << ",";
 
 if( nline )
 {
 aFile << "\n ";
 nline = false;
 }
 else
 {
 nline = true;
 }
 
 }
 }
 
 aFile << "] }\n";
 
 return true;
}
 
 
bool SGNORMALS::WriteCache( std::ostream& aFile, SGNODE* parentNode )
{
 if( nullptr == parentNode )
 {
 wxCHECK( m_Parent, false );
 
 SGNODE* np = m_Parent;
 
 while( nullptr != np->GetParent() )
 np = np->GetParent();
 
 if( np->WriteCache( aFile, nullptr ) )
 {
 m_written = true;
 return true;
 }
 
 return false;
 }
 
 wxCHECK( parentNode == m_Parent, false );
 
 if( !aFile.good() )
 {
 wxLogTrace( MASK_3D_SG, wxT( "%s:%s:%d * [INFO] bad stream" ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 
 aFile << "[" << GetName() << "]";
 size_t npts = norms.size();
 aFile.write( (char*)&npts, sizeof(size_t) );
 
 for( size_t i = 0; i < npts; ++i )
 S3D::WriteVector( aFile, norms[i] );
 
 if( aFile.fail() )
 return false;
 
 m_written = true;
 return true;
}
 
 
bool SGNORMALS::ReadCache( std::istream& aFile, SGNODE* parentNode )
{
 wxCHECK( norms.empty(), false );
 
 size_t npts;
 aFile.read( (char*) &npts, sizeof( size_t ) );
 SGVECTOR tmp;
 
 if( aFile.fail() )
 return false;
 
 for( size_t i = 0; i < npts; ++i )
 {
 if( !S3D::ReadVector( aFile, tmp ) || aFile.fail() )
 return false;
 
 norms.push_back( tmp );
 }
 
 return true;
}