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kicad/3d-viewer/3d_cache/sg/sg_shape.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015 Cirilo Bernardo <cirilo.bernardo@gmail.com>
*
* 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 <fstream>
#include <iostream>
#include <sstream>
#include <wx/log.h>
#include "3d_cache/sg/sg_shape.h"
#include "3d_cache/sg/sg_faceset.h"
#include "3d_cache/sg/sg_appearance.h"
#include "3d_cache/sg/sg_helpers.h"
#include "3d_cache/sg/sg_coordindex.h"
#include "3d_cache/sg/sg_coords.h"
#include "3d_cache/sg/sg_colors.h"
#include "3d_cache/sg/sg_normals.h"
SGSHAPE::SGSHAPE( SGNODE* aParent ) : SGNODE( aParent )
{
m_SGtype = S3D::SGTYPE_SHAPE;
m_Appearance = NULL;
m_RAppearance = NULL;
m_FaceSet = NULL;
m_RFaceSet = NULL;
if( NULL != aParent && S3D::SGTYPE_TRANSFORM != aParent->GetNodeType() )
{
m_Parent = NULL;
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] inappropriate parent to SGSHAPE (type ";
ostr << aParent->GetNodeType() << ")";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
}
else if( NULL != aParent && S3D::SGTYPE_TRANSFORM == aParent->GetNodeType() )
{
m_Parent->AddChildNode( this );
}
return;
}
SGSHAPE::~SGSHAPE()
{
// drop references
if( m_RAppearance )
{
m_RAppearance->delNodeRef( this );
m_RAppearance = NULL;
}
if( m_RFaceSet )
{
m_RFaceSet->delNodeRef( this );
m_RFaceSet = NULL;
}
// delete objects
if( m_Appearance )
{
m_Appearance->SetParent( NULL, false );
delete m_Appearance;
m_Appearance = NULL;
}
if( m_FaceSet )
{
m_FaceSet->SetParent( NULL, false );
delete m_FaceSet;
m_FaceSet = NULL;
}
return;
}
bool SGSHAPE::SetParent( SGNODE* aParent, bool notify )
{
if( NULL != m_Parent )
{
if( aParent == m_Parent )
return true;
// handle the change in parents
if( notify )
m_Parent->unlinkChildNode( this );
m_Parent = NULL;
if( NULL == aParent )
return true;
}
// only a SGTRANSFORM may be parent to a SGSHAPE
if( NULL != aParent && S3D::SGTYPE_TRANSFORM != aParent->GetNodeType() )
return false;
m_Parent = aParent;
if( m_Parent )
m_Parent->AddChildNode( this );
return true;
}
SGNODE* SGSHAPE::FindNode(const char *aNodeName, const SGNODE *aCaller)
{
if( NULL == aNodeName || 0 == aNodeName[0] )
return NULL;
if( !m_Name.compare( aNodeName ) )
return this;
SGNODE* tmp = NULL;
if( NULL != m_Appearance )
{
tmp = m_Appearance->FindNode( aNodeName, this );
if( tmp )
{
return tmp;
}
}
if( NULL != m_FaceSet )
{
tmp = m_FaceSet->FindNode( aNodeName, this );
if( tmp )
{
return tmp;
}
}
// query the parent if appropriate
if( aCaller == m_Parent || NULL == m_Parent )
return NULL;
return m_Parent->FindNode( aNodeName, this );
}
void SGSHAPE::unlinkNode( const SGNODE* aNode, bool isChild )
{
if( NULL == aNode )
return;
if( isChild )
{
if( aNode == m_Appearance )
{
m_Appearance = NULL;
return;
}
if( aNode == m_FaceSet )
{
m_FaceSet = NULL;
return;
}
}
else
{
if( aNode == m_RAppearance )
{
delNodeRef( this );
m_RAppearance = NULL;
return;
}
if( aNode == m_RFaceSet )
{
delNodeRef( this );
m_RFaceSet = NULL;
return;
}
}
#ifdef DEBUG
do {
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] unlinkNode() did not find its target";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
} while( 0 );
#endif
return;
}
void SGSHAPE::unlinkChildNode( const SGNODE* aNode )
{
unlinkNode( aNode, true );
return;
}
void SGSHAPE::unlinkRefNode( const SGNODE* aNode )
{
unlinkNode( aNode, false );
return;
}
bool SGSHAPE::addNode( SGNODE* aNode, bool isChild )
{
if( NULL == aNode )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] NULL pointer passed for aNode";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
if( S3D::SGTYPE_APPEARANCE == aNode->GetNodeType() )
{
if( m_Appearance || m_RAppearance )
{
if( aNode != m_Appearance && aNode != m_RAppearance )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] assigning multiple Appearance nodes";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
return true;
}
if( isChild )
{
m_Appearance = (SGAPPEARANCE*)aNode;
m_Appearance->SetParent( this );
}
else
{
m_RAppearance = (SGAPPEARANCE*)aNode;
m_RAppearance->addNodeRef( this );
}
return true;
}
if( S3D::SGTYPE_FACESET == aNode->GetNodeType() )
{
if( m_FaceSet || m_RFaceSet )
{
if( aNode != m_FaceSet && aNode != m_RFaceSet )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] assigning multiple FaceSet nodes";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
return true;
}
if( isChild )
{
m_FaceSet = (SGFACESET*)aNode;
m_FaceSet->SetParent( this );
}
else
{
m_RFaceSet = (SGFACESET*)aNode;
m_RFaceSet->addNodeRef( this );
}
return true;
}
#ifdef DEBUG
do {
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] object '" << aNode->GetName();
ostr << "' is not a valid type for this object (" << aNode->GetNodeType() << ")";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
} while( 0 );
#endif
return false;
}
bool SGSHAPE::AddRefNode( SGNODE* aNode )
{
return addNode( aNode, false );
}
bool SGSHAPE::AddChildNode( SGNODE* aNode )
{
return addNode( aNode, true );
}
void SGSHAPE::ReNameNodes( void )
{
m_written = false;
// rename this node
m_Name.clear();
GetName();
// rename Appearance
if( m_Appearance )
m_Appearance->ReNameNodes();
// rename FaceSet
if( m_FaceSet )
m_FaceSet->ReNameNodes();
return;
}
bool SGSHAPE::WriteVRML( std::ofstream& aFile, bool aReuseFlag )
{
if( !m_Appearance && !m_RAppearance
&& !m_FaceSet && !m_RFaceSet )
{
return false;
}
if( aReuseFlag )
{
if( !m_written )
{
aFile << "DEF " << GetName() << " Shape {\n";
m_written = true;
}
else
{
aFile << " USE " << GetName() << "\n";
return true;
}
}
else
{
aFile << " Shape {\n";
}
if( m_Appearance )
m_Appearance->WriteVRML( aFile, aReuseFlag );
if( m_RAppearance )
m_RAppearance->WriteVRML( aFile, aReuseFlag );
if( m_FaceSet )
m_FaceSet->WriteVRML( aFile, aReuseFlag );
if( m_RFaceSet )
m_RFaceSet->WriteVRML( aFile, aReuseFlag );
aFile << "}\n";
return true;
}
bool SGSHAPE::WriteCache( std::ofstream& aFile, SGNODE* parentNode )
{
if( NULL == parentNode )
{
if( NULL == m_Parent )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] corrupt data; m_aParent is NULL";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
SGNODE* np = m_Parent;
while( NULL != np->GetParent() )
np = np->GetParent();
if( np->WriteCache( aFile, NULL ) )
{
m_written = true;
return true;
}
return false;
}
if( parentNode != m_Parent )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] corrupt data; parentNode != m_aParent";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
if( !aFile.good() )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] bad stream";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
// check if any references are unwritten and swap parents if so
if( NULL != m_RAppearance && !m_RAppearance->isWritten() )
m_RAppearance->SwapParent(this);
if( NULL != m_RFaceSet && !m_RFaceSet->isWritten() )
m_RFaceSet->SwapParent( this );
aFile << "[" << GetName() << "]";
#define NITEMS 4
bool items[NITEMS];
int i;
for( i = 0; i < NITEMS; ++i )
items[i] = 0;
i = 0;
if( NULL != m_Appearance )
items[i] = true;
++i;
if( NULL != m_RAppearance )
items[i] = true;
++i;
if( NULL != m_FaceSet )
items[i] = true;
++i;
if( NULL != m_RFaceSet )
items[i] = true;
for( int i = 0; i < NITEMS; ++i )
aFile.write( (char*)&items[i], sizeof(bool) );
if( items[0] )
m_Appearance->WriteCache( aFile, this );
if( items[1] )
aFile << "[" << m_RAppearance->GetName() << "]";
if( items[2] )
m_FaceSet->WriteCache( aFile, this );
if( items[3] )
aFile << "[" << m_RFaceSet->GetName() << "]";
if( aFile.fail() )
return false;
m_written = true;
return true;
}
bool SGSHAPE::ReadCache( std::ifstream& aFile, SGNODE* parentNode )
{
if( m_Appearance || m_RAppearance || m_FaceSet || m_RFaceSet )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [BUG] non-empty node";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
#define NITEMS 4
bool items[NITEMS];
for( int i = 0; i < NITEMS; ++i )
aFile.read( (char*)&items[i], sizeof(bool) );
if( ( items[0] && items[1] ) || ( items[2] && items[3] ) )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data; multiple item definitions at position ";
ostr << aFile.tellg();
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
std::string name;
if( items[0] )
{
if( S3D::SGTYPE_APPEARANCE != S3D::ReadTag( aFile, name ) )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data; bad child apperance tag at position ";
ostr << aFile.tellg();
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
m_Appearance = new SGAPPEARANCE( this );
m_Appearance->SetName( name.c_str() );
if( !m_Appearance->ReadCache( aFile, this ) )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data while reading appearance '";
ostr << name << "'";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
}
if( items[1] )
{
if( S3D::SGTYPE_APPEARANCE != S3D::ReadTag( aFile, name ) )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data; bad ref appearance tag at position ";
ostr << aFile.tellg();
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
SGNODE* np = FindNode( name.c_str(), this );
if( !np )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data: cannot find ref appearance '";
ostr << name << "'";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
if( S3D::SGTYPE_APPEARANCE != np->GetNodeType() )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data: type is not SGAPPEARANCE '";
ostr << name << "'";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
m_RAppearance = (SGAPPEARANCE*)np;
m_RAppearance->addNodeRef( this );
}
if( items[2] )
{
if( S3D::SGTYPE_FACESET != S3D::ReadTag( aFile, name ) )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data; bad child face set tag at position ";
ostr << aFile.tellg();
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
m_FaceSet = new SGFACESET( this );
m_FaceSet->SetName( name.c_str() );
if( !m_FaceSet->ReadCache( aFile, this ) )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data while reading face set '";
ostr << name << "'";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
}
if( items[3] )
{
if( S3D::SGTYPE_FACESET != S3D::ReadTag( aFile, name ) )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data; bad ref face set tag at position ";
ostr << aFile.tellg();
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
SGNODE* np = FindNode( name.c_str(), this );
if( !np )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data: cannot find ref face set '";
ostr << name << "'";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
if( S3D::SGTYPE_FACESET != np->GetNodeType() )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] corrupt data: type is not SGFACESET '";
ostr << name << "'";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return false;
}
m_RFaceSet = (SGFACESET*)np;
m_RFaceSet->addNodeRef( this );
}
if( aFile.fail() )
return false;
return true;
}
bool SGSHAPE::Prepare( const glm::dmat4* aTransform,
S3D::MATLIST& materials, std::vector< SMESH >& meshes )
{
SMESH m;
S3D::INIT_SMESH( m );
SGAPPEARANCE* pa = m_Appearance;
SGFACESET* pf = m_FaceSet;
if( NULL == pa )
pa = m_RAppearance;
if( NULL == pf )
pf = m_RFaceSet;
// no face sets = nothing to render, which is valid though pointless
if( NULL == pf )
return true;
if( !pf->validate() )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] bad model; inconsistent data";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return true;
}
if( NULL == pa )
{
m.m_MaterialIdx = 0;
}
else
{
int idx;
if( !S3D::GetMatIndex( materials, pa, idx ) )
{
m.m_MaterialIdx = 0;
}
else
{
m.m_MaterialIdx = idx;
}
}
SGCOLORS* pc = pf->m_Colors;
SGCOORDS* pv = pf->m_Coords;
SGCOORDINDEX* vidx = pf->m_CoordIndices;
SGNORMALS* pn = pf->m_Normals;
if( NULL == pc )
pc = pf->m_RColors;
if( NULL == pv )
pv = pf->m_RCoords;
if( NULL == pn )
pn = pf->m_RNormals;
// set the vertex points and indices
size_t nCoords = 0;
SGPOINT* pCoords = NULL;
pv->GetCoordsList( nCoords, pCoords );
size_t nColors = 0;
SGCOLOR* pColors = NULL;
if( pc )
{
// check the vertex colors
pc->GetColorList( nColors, pColors );
if( nColors < nCoords )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] bad model; not enough colors per vertex (";
ostr << nColors << " vs " << nCoords << ")";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return true;
}
}
// set the vertex indices
size_t nvidx = 0;
int* lv = NULL;
vidx->GetIndices( nvidx, lv );
// note: reduce the vertex set to include only the referenced vertices
std::vector< int > vertices; // store the list of temp vertex indices
std::map< int, unsigned int > indexmap; // map temp vertex to true vertex
std::map< int, unsigned int >::iterator mit;
for( unsigned int i = 0; i < nvidx; ++i )
{
mit = indexmap.find( lv[i] );
if( mit == indexmap.end() )
{
indexmap.insert( std::pair< int, unsigned int >( lv[i], vertices.size() ) );
vertices.push_back( lv[i] );
}
}
if( vertices.size() < 3 )
{
#ifdef DEBUG
std::ostringstream ostr;
ostr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
ostr << " * [INFO] bad model; not enough vertices";
wxLogTrace( MASK_3D_SG, "%s\n", ostr.str().c_str() );
#endif
return true;
}
// construct the final vertex/color list
SFVEC3F* lColors = NULL;
SFVEC3F* lCoords = new SFVEC3F[ vertices.size() ];
int ti;
if( pc )
{
lColors = new SFVEC3F[vertices.size()];
m.m_Color = lColors;
}
if( pc )
{
for( size_t i = 0; i < vertices.size(); ++i )
{
ti = vertices[i];
glm::dvec4 pt( pCoords[ti].x, pCoords[ti].y, pCoords[ti].z, 1.0 );
pt = (*aTransform) * pt;
pColors[ti].GetColor( lColors[i].x, lColors[i].y, lColors[i].z );
lCoords[i] = SFVEC3F( pt.x, pt.y, pt.z );
}
}
else
{
for( size_t i = 0; i < vertices.size(); ++i )
{
ti = vertices[i];
glm::dvec4 pt( pCoords[ti].x, pCoords[ti].y, pCoords[ti].z, 1.0 );
pt = (*aTransform) * pt;
lCoords[i] = SFVEC3F( pt.x, pt.y, pt.z );
}
}
m.m_VertexSize = (unsigned int) vertices.size();
m.m_Positions = lCoords;
unsigned int* lvidx = new unsigned int[ nvidx ];
for( unsigned int i = 0; i < nvidx; ++i )
{
mit = indexmap.find( lv[i] );
lvidx[i] = mit->second;
}
m.m_FaceIdxSize = (unsigned int )nvidx;
m.m_FaceIdx = lvidx;
// set the per-vertex normals
size_t nNorms = 0;
SGVECTOR* pNorms = NULL;
double x, y, z;
pn->GetNormalList( nNorms, pNorms );
SFVEC3F* lNorms = new SFVEC3F[ vertices.size() ];
for( size_t i = 0; i < vertices.size(); ++i )
{
ti = vertices[i];
pNorms[ti].GetVector( x, y, z );
glm::dvec4 pt( x, y, z, 0.0 );
pt = (*aTransform) * pt;
lNorms[i] = SFVEC3F( pt.x, pt.y, pt.z );
}
m.m_Normals = lNorms;
meshes.push_back( m );
return true;
}
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