vrml2_box.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2016 Cirilo Bernardo <[email protected]>
 * Copyright (C) 2021 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 "vrml2_base.h"
#include "vrml2_box.h"
#include "plugins/3dapi/ifsg_all.h"


WRL2BOX::WRL2BOX() : WRL2NODE()
{
 m_Type = WRL2NODES::WRL2_BOX;
 size.x = 2.0;
 size.y = 2.0;
 size.z = 2.0;
}


WRL2BOX::WRL2BOX( WRL2NODE* aParent ) : WRL2NODE()
{
 m_Type = WRL2NODES::WRL2_BOX;
 m_Parent = aParent;
 size.x = 2.0;
 size.y = 2.0;
 size.z = 2.0;

 if( nullptr != m_Parent )
 m_Parent->AddChildNode( this );
}


WRL2BOX::~WRL2BOX()
{
 wxLogTrace( traceVrmlPlugin, wxT( " * [INFO] Destroying Box node." ) );
}


bool WRL2BOX::isDangling( void )
{
 // this node is dangling unless it has a parent of type WRL2_SHAPE

 if( nullptr == m_Parent || m_Parent->GetNodeType() != WRL2NODES::WRL2_SHAPE )
 return true;

 return false;
}


bool WRL2BOX::Read( WRLPROC& proc, WRL2BASE* aTopNode )
{
 char tok = proc.Peek();

 if( proc.eof() )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; unexpected eof %s." ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition() );

 return false;
 }

 if( '{' != tok )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; expecting '{' but got '%s' %s." ),
 __FILE__, __FUNCTION__, __LINE__, tok, proc.GetFilePosition() );

 return false;
 }

 proc.Pop();
 std::string glob;

 if( proc.Peek() == '}' )
 {
 proc.Pop();
 return true;
 }

 if( !proc.ReadName( glob ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__ , proc.GetError() );

 return false;
 }

 // expecting 'size'
 if( !glob.compare( "size" ) )
 {
 if( !proc.ReadSFVec3f( size ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d"
 " * [INFO] invalid size %s\n"
 " * [INFO] file: '%s'\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName(), proc.GetError() );

  return false;
 }

 // for legacy KiCad support we interpret units as 0.1 inch
 size *= 2.54;
 }
 else
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d"
 " * [INFO] invalid Box %s\n"
 " * [INFO] file: '%s'\n" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName() );

 return false;
 }

 if( size.x < 1e-6 || size.y < 1e-6 || size.z < 1e-6 )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d"
 " * [INFO] invalid Box size %s\n"
 " * [INFO] file: '%s'\n" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName() );

 }

 if( proc.Peek() == '}' )
 {
 proc.Pop();
 return true;
 }

 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d"
 " * [INFO] invalid size %s (no closing brace).\n"
 " * [INFO] file: '%s'\n" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(), proc.GetFileName() );

 return false;
}


bool WRL2BOX::AddRefNode( WRL2NODE* aNode )
{
 // this node may not own or reference any other node
 wxCHECK_MSG( false, false, wxT( "AddRefNode is not applicable." ) );
}


bool WRL2BOX::AddChildNode( WRL2NODE* aNode )
{
 // this node may not own or reference any other node
 wxCHECK_MSG( false, false, wxT( "AddChildNode is not applicable." ) );
}


SGNODE* WRL2BOX::TranslateToSG( SGNODE* aParent )
{
 S3D::SGTYPES ptype = S3D::GetSGNodeType( aParent );

 wxCHECK_MSG( aParent && ( ptype == S3D::SGTYPE_SHAPE ), nullptr,
 wxString::Format( wxT( "Box does not have a Shape parent (parent ID: %s)" ),
 ptype ) );

 // do not render a bad box
 if( size.x < 1e-6 || size.y < 1e-6 || size.z < 1e-6 )
 return nullptr;

 if( m_sgNode )
 {
 if( nullptr != aParent )
 {
 if( nullptr == S3D::GetSGNodeParent( m_sgNode )
 && !S3D::AddSGNodeChild( aParent, m_sgNode ) )
 {
 return nullptr;
 }
 else if( aParent != S3D::GetSGNodeParent( m_sgNode )
 && !S3D::AddSGNodeRef( aParent, m_sgNode ) )
 {
 return nullptr;
 }
 }

 return m_sgNode;
 }

 // create the vertices, triangle indices, and normals
 float x = size.x / 2.0;
 float y = size.y / 2.0;
 float z = size.z / 2.0;
 std::vector< SGPOINT > vertices;
 std::vector< SGVECTOR > norms;
 std::vector< int > idx;
 int base = 0;

 // top
  vertices.emplace_back( -x, -y, z );
 vertices.emplace_back( x, -y, z );
 vertices.emplace_back( x, y, z );
 vertices.emplace_back( -x, y, z );
 norms.emplace_back( 0.0, 0.0, 1.0 );
 norms.emplace_back( 0.0, 0.0, 1.0 );
 norms.emplace_back( 0.0, 0.0, 1.0 );
 norms.emplace_back( 0.0, 0.0, 1.0 );
 idx.push_back( base );
 idx.push_back( base + 1 );
 idx.push_back( base + 2 );
 idx.push_back( base );
 idx.push_back( base + 2 );
 idx.push_back( base + 3 );
 base += 4;

 // bottom
 vertices.emplace_back( -x, -y, -z );
 vertices.emplace_back( x, -y, -z );
 vertices.emplace_back( x, y, -z );
 vertices.emplace_back( -x, y, -z );
 norms.emplace_back( 0.0, 0.0, -1.0 );
 norms.emplace_back( 0.0, 0.0, -1.0 );
 norms.emplace_back( 0.0, 0.0, -1.0 );
 norms.emplace_back( 0.0, 0.0, -1.0 );
 idx.push_back( base );
 idx.push_back( base + 2 );
 idx.push_back( base + 1 );
 idx.push_back( base );
 idx.push_back( base + 3 );
 idx.push_back( base + 2 );
 base += 4;

 // front
 vertices.emplace_back( -x, -y, z );
 vertices.emplace_back( -x, -y, -z );
 vertices.emplace_back( x, -y, -z );
 vertices.emplace_back( x, -y, z );
 norms.emplace_back( 0.0, -1.0, 0.0 );
 norms.emplace_back( 0.0, -1.0, 0.0 );
 norms.emplace_back( 0.0, -1.0, 0.0 );
 norms.emplace_back( 0.0, -1.0, 0.0 );
 idx.push_back( base );
 idx.push_back( base + 1 );
 idx.push_back( base + 2 );
 idx.push_back( base );
 idx.push_back( base + 2 );
 idx.push_back( base + 3 );
 base += 4;

 // back
 vertices.emplace_back( -x, y, z );
 vertices.emplace_back( -x, y, -z );
 vertices.emplace_back( x, y, -z );
 vertices.emplace_back( x, y, z );
 norms.emplace_back( 0.0, 1.0, 0.0 );
 norms.emplace_back( 0.0, 1.0, 0.0 );
 norms.emplace_back( 0.0, 1.0, 0.0 );
 norms.emplace_back( 0.0, 1.0, 0.0 );
 idx.push_back( base );
 idx.push_back( base + 2 );
 idx.push_back( base + 1 );
 idx.push_back( base );
 idx.push_back( base + 3 );
 idx.push_back( base + 2 );
 base += 4;

 // left
 vertices.emplace_back( -x, -y, -z );
 vertices.emplace_back( -x, -y, z );
 vertices.emplace_back( -x, y, z );
 vertices.emplace_back( -x, y, -z );
 norms.emplace_back( -1.0, 0.0, 0.0 );
 norms.emplace_back( -1.0, 0.0, 0.0 );
 norms.emplace_back( -1.0, 0.0, 0.0 );
 norms.emplace_back( -1.0, 0.0, 0.0 );
 idx.push_back( base );
 idx.push_back( base + 1 );
 idx.push_back( base + 2 );
 idx.push_back( base );
 idx.push_back( base + 2 );
 idx.push_back( base + 3 );
 base += 4;

 // right
 vertices.emplace_back( x, -y, -z );
 vertices.emplace_back( x, -y, z );
 vertices.emplace_back( x, y, z );
 vertices.emplace_back( x, y, -z );
 norms.emplace_back( 1.0, 0.0, 0.0 );
 norms.emplace_back( 1.0, 0.0, 0.0 );
 norms.emplace_back( 1.0, 0.0, 0.0 );
 norms.emplace_back( 1.0, 0.0, 0.0 );
 idx.push_back( base );
 idx.push_back( base + 2 );
 idx.push_back( base + 1 );
 idx.push_back( base );
 idx.push_back( base + 3 );
 idx.push_back( base + 2 );

 IFSG_FACESET fsNode( aParent );
 IFSG_COORDS cpNode( fsNode );
 cpNode.SetCoordsList( vertices.size(), &vertices[0] );
 IFSG_COORDINDEX ciNode( fsNode );
 ciNode.SetIndices( idx.size(), &idx[0] );
 IFSG_NORMALS nmNode( fsNode );
 nmNode.SetNormalList( norms.size(), &norms[0] );

 m_sgNode = fsNode.GetRawPtr();

 return m_sgNode;
}