vrml2_material.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_material.h"
#include "plugins/3dapi/ifsg_all.h"


WRL2MATERIAL::WRL2MATERIAL() : WRL2NODE()
{
 setDefaults();
 m_Type = WRL2NODES::WRL2_MATERIAL;
}


WRL2MATERIAL::WRL2MATERIAL( WRL2NODE* aParent ) : WRL2NODE()
{
 setDefaults();
 m_Type = WRL2NODES::WRL2_MATERIAL;
 m_Parent = aParent;

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


WRL2MATERIAL::~WRL2MATERIAL()
{
 wxLogTrace( traceVrmlPlugin, wxT( " * [INFO] Destroying Material node." ) );
}


void WRL2MATERIAL::setDefaults( void )
{
 // default material values as per VRML2 spec
 diffuseColor.x = 0.8f;
 diffuseColor.y = 0.8f;
 diffuseColor.z = 0.8f;

 emissiveColor.x = 0.0f;
 emissiveColor.y = 0.0f;
 emissiveColor.z = 0.0f;

 specularColor = emissiveColor;

 ambientIntensity = 0.2f;
 shininess = 0.2f;
 transparency = 0.0f;
}


bool WRL2MATERIAL::isDangling( void )
{
 // this node is dangling unless it has a parent of type WRL2NODES::WRL2_APPEARANCE

 if( nullptr == m_Parent || m_Parent->GetNodeType() != WRL2NODES::WRL2_APPEARANCE )
 return true;

 return false;
}


bool WRL2MATERIAL::AddRefNode( WRL2NODE* aNode )
{
 // this node may not own or reference any other node
 wxCHECK_MSG( false, false, wxT( "AddRefNode is not applicable." ) );
}


bool WRL2MATERIAL::AddChildNode( WRL2NODE* aNode )
{
 // this node may not own or reference any other node
 wxCHECK_MSG( false, false, wxT( "AddChildNode is not applicable." ) );
}


bool WRL2MATERIAL::Read( WRLPROC& proc, WRL2BASE* aTopNode )
{
 wxCHECK_MSG( aTopNode, false, wxT( "Invalid top node." ) );

 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;

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

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

 return false;
 }

 // expecting one of:
 // ambientIntensity
 // diffuseColor
 // emissiveColor
 // shininess
 // specularColor
 // transparency

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

 return false;
 }
 }
 else if( !glob.compare( "diffuseColor" ) )
 {
 if( !proc.ReadSFVec3f( diffuseColor ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [INFO] invalid diffuseColor set %s\n"
 " * [INFO] file: '%s'\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName(), proc.GetError() );

 return false;
 }
 }
 else if( !glob.compare( "emissiveColor" ) )
 {
 if( !proc.ReadSFVec3f( emissiveColor ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [INFO] invalid emissiveColor set %s\n"
 " * [INFO] file: '%s'\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName(), proc.GetError() );

 return false;
 }
 }
 else if( !glob.compare( "shininess" ) )
 {
 if( !proc.ReadSFFloat( shininess ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [INFO] invalid shininess set %s\n"
 " * [INFO] file: '%s'\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName(), proc.GetError() );

 return false;
 }
 }
 else if( !glob.compare( "transparency" ) )
 {
 if( !proc.ReadSFFloat( transparency ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [INFO] invalid transparency set %s\n"
 " * [INFO] file: '%s'\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName(), proc.GetError() );

 return false;
 }
 }
 else if( !glob.compare( "ambientIntensity" ) )
 {
 if( !proc.ReadSFFloat( ambientIntensity ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [INFO] invalid ambientIntensity set %s\n"
 " * [INFO] file: '%s'\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName(), proc.GetError() );

 return false;
 }
 }
 else
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [INFO] invalid Material %s.\n"
 " * [INFO] file: '%s'\n" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName() );

 return false;
 }
 } // while( true ) -- reading contents of Material{}

 return true;
}


SGNODE* WRL2MATERIAL::TranslateToSG( SGNODE* aParent )
{
 S3D::SGTYPES ptype = S3D::GetSGNodeType( aParent );

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

 wxLogTrace( traceVrmlPlugin,
 wxT( " * [INFO] Translating IndexedFaceSet with %zu children, %zu references, and"
 "%zu back pointers." ),
 m_Children.size(), m_Refs.size(), m_BackPointers.size() );

 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;
 }

 IFSG_APPEARANCE matNode( aParent );
 matNode.SetEmissive( emissiveColor.x, emissiveColor.y, emissiveColor.z );
 matNode.SetSpecular( specularColor.x, specularColor.y, specularColor.z );
 matNode.SetDiffuse( diffuseColor.x, diffuseColor.y, diffuseColor.z );
 float ambr = ambientIntensity * diffuseColor.x;
 float ambg = ambientIntensity * diffuseColor.y;
 float ambb = ambientIntensity * diffuseColor.z;
 matNode.SetAmbient( ambr, ambg, ambb );
 matNode.SetShininess( shininess );
 matNode.SetTransparency( transparency );
 m_sgNode = matNode.GetRawPtr();

 return m_sgNode;
}