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kicad/3d-viewer/3d_cache/3d_cache.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
*/
#define GLM_FORCE_RADIANS
#include <iostream>
#include <fstream>
#include <string>
#include <utility>
#include <iterator>
#include <cstdio>
#include <wx/filename.h>
#include <wx/utils.h>
#include <wx/stdpaths.h>
#include <boost/uuid/sha1.hpp>
#include <glm/glm.hpp>
#include <glm/gtx/transform.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include "3d_cache.h"
#include "3d_info.h"
#include "sg/scenegraph.h"
#include "3d_filename_resolver.h"
#include "3d_plugin_manager.h"
#include "plugins/3dapi/ifsg_api.h"
#define CACHE_CONFIG_NAME wxT( "cache.cfg" )
static const wxString sha1ToWXString( const unsigned char* aSHA1Sum )
{
unsigned char uc;
unsigned char tmp;
char sha1[41];
int j = 0;
for( int i = 0; i < 20; ++i )
{
uc = aSHA1Sum[i];
tmp = uc / 16;
if( tmp > 9 )
tmp += 87;
else
tmp += 48;
sha1[j++] = tmp;
tmp = uc % 16;
if( tmp > 9 )
tmp += 87;
else
tmp += 48;
sha1[j++] = tmp;
}
sha1[j] = 0;
return wxString::FromUTF8Unchecked( sha1 );
}
static bool sha1Matches( const unsigned char* sha1a, const unsigned char* sha1b )
{
for( int i = 0; i < 20; ++i )
{
if( sha1a[i] != sha1b[i] )
return false;
}
return true;
}
static bool isSHA1null( const unsigned char* aSHA1Sum )
{
if( NULL == aSHA1Sum )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] NULL passed for aSHA1Sum\n";
#endif
return false;
}
for( int i = 0; i < 20; ++i )
{
if( 0 != aSHA1Sum[i] )
return false;
}
return true;
}
class S3D_CACHE_ENTRY
{
private:
// prohibit assignment and default copy constructor
S3D_CACHE_ENTRY( const S3D_CACHE_ENTRY& source );
S3D_CACHE_ENTRY& operator=( const S3D_CACHE_ENTRY& source );
wxString m_CacheBaseName; // base name of cache file (a SHA1 digest)
public:
S3D_CACHE_ENTRY();
~S3D_CACHE_ENTRY();
void SetSHA1( const unsigned char* aSHA1Sum );
const wxString GetCacheBaseName( void );
unsigned char sha1sum[20];
SCENEGRAPH* sceneData;
S3DMODEL* renderData;
};
S3D_CACHE_ENTRY::S3D_CACHE_ENTRY()
{
sceneData = NULL;
renderData = NULL;
memset( sha1sum, 0, 20 );
}
S3D_CACHE_ENTRY::~S3D_CACHE_ENTRY()
{
if( NULL != sceneData )
delete sceneData;
if( NULL != renderData )
S3D::Destroy3DModel( &renderData );
}
void S3D_CACHE_ENTRY::SetSHA1( const unsigned char* aSHA1Sum )
{
if( NULL == aSHA1Sum )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] NULL passed for aSHA1Sum\n";
#endif
return;
}
memcpy( sha1sum, aSHA1Sum, 20 );
return;
}
const wxString S3D_CACHE_ENTRY::GetCacheBaseName( void )
{
if( m_CacheBaseName.empty() )
m_CacheBaseName = sha1ToWXString( sha1sum );
return m_CacheBaseName;
}
S3D_CACHE::S3D_CACHE()
{
m_DirtyCache = false;
m_FNResolver = new S3D_FILENAME_RESOLVER;
m_Plugins = new S3D_PLUGIN_MANAGER;
return;
}
S3D_CACHE::~S3D_CACHE()
{
FlushCache();
if( m_FNResolver )
delete m_FNResolver;
if( m_Plugins )
delete m_Plugins;
return;
}
SCENEGRAPH* S3D_CACHE::load( const wxString& aModelFile, S3D_CACHE_ENTRY** aCachePtr )
{
if( aCachePtr )
*aCachePtr = NULL;
wxString full3Dpath = m_FNResolver->ResolvePath( aModelFile );
if( full3Dpath.empty() )
{
// the model cannot be found; we cannot proceed
std::cout << " * [3D model] could not find model '";
std::cout << aModelFile.ToUTF8() << "'\n";
return NULL;
}
// check cache if file is already loaded
std::map< wxString, S3D_CACHE_ENTRY*, S3D::rsort_wxString >::iterator mi;
mi = m_CacheMap.find( full3Dpath );
if( mi != m_CacheMap.end() )
{
if( NULL != aCachePtr )
*aCachePtr = mi->second;
return mi->second->sceneData;
}
// a cache item does not exist; search the Filename->Cachename map
return checkCache( full3Dpath, aCachePtr );
}
SCENEGRAPH* S3D_CACHE::Load( const wxString& aModelFile )
{
return load( aModelFile );
}
SCENEGRAPH* S3D_CACHE::checkCache( const wxString& aFileName, S3D_CACHE_ENTRY** aCachePtr )
{
if( aCachePtr )
*aCachePtr = NULL;
unsigned char sha1sum[20];
if( !getSHA1( aFileName, sha1sum ) || m_CacheDir.empty() )
{
// just in case we can't get an hash digest (for example, on access issues)
// or we do not have a configured cache file directory, we create an
// entry to prevent further attempts at loading the file
S3D_CACHE_ENTRY* ep = new S3D_CACHE_ENTRY;
m_CacheList.push_back( ep );
if( m_CacheMap.insert( std::pair< wxString, S3D_CACHE_ENTRY* >
( aFileName, ep ) ).second == false )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] duplicate entry in map file; key = ";
std::cerr << aFileName.ToUTF8() << "\n";
#endif
m_CacheList.pop_back();
delete ep;
}
else
{
if( aCachePtr )
*aCachePtr = ep;
}
return NULL;
}
S3D_CACHE_ENTRY* ep = new S3D_CACHE_ENTRY;
m_CacheList.push_back( ep );
if( m_CacheMap.insert( std::pair< wxString, S3D_CACHE_ENTRY* >
( aFileName, ep ) ).second == false )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] duplicate entry in map file; key = ";
std::cerr << aFileName.ToUTF8() << "\n";
#endif
m_CacheList.pop_back();
delete ep;
return NULL;
}
if( aCachePtr )
*aCachePtr = ep;
ep->SetSHA1( sha1sum );
wxString bname = ep->GetCacheBaseName();
wxString cachename = m_CacheDir + bname + wxT( ".3dc" );
if( wxFileName::FileExists( cachename ) && loadCacheData( ep ) )
return ep->sceneData;
ep->sceneData = m_Plugins->Load3DModel( aFileName );
if( NULL != ep->sceneData )
saveCacheData( ep );
return ep->sceneData;
}
bool S3D_CACHE::getSHA1( const wxString& aFileName, unsigned char* aSHA1Sum )
{
if( aFileName.empty() )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] empty filename\n";
#endif
return false;
}
if( NULL == aSHA1Sum )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] NULL pointer passed for aMD5Sum\n";
#endif
return false;
}
FILE* fp = fopen( aFileName.ToUTF8(), "rb" );
boost::uuids::detail::sha1 dblock;
unsigned char block[4096];
size_t bsize = 0;
while( ( bsize = fread( &block, 1, 4096, fp ) ) > 0 )
dblock.process_bytes( block, bsize );
fclose( fp );
unsigned int digest[5];
dblock.get_digest( digest );
// ensure MSB order
for( int i = 0; i < 5; ++i )
{
int idx = i << 2;
unsigned int tmp = digest[i];
aSHA1Sum[idx+3] = tmp & 0xff;
tmp >>= 8;
aSHA1Sum[idx+2] = tmp & 0xff;
tmp >>= 8;
aSHA1Sum[idx+1] = tmp & 0xff;
tmp >>= 8;
aSHA1Sum[idx] = tmp & 0xff;
}
return true;
}
bool S3D_CACHE::loadCacheData( S3D_CACHE_ENTRY* aCacheItem )
{
wxString bname = aCacheItem->GetCacheBaseName();
if( bname.empty() )
{
#ifdef DEBUG
std::cerr << " * [3D model] cannot load cached model; no md5 hash available\n";
#endif
return false;
}
if( m_CacheDir.empty() )
{
wxString errmsg = _( "cannot load cached model; config directory unknown" );
std::cerr << " * [3D model] " << errmsg.ToUTF8() << "\n";
return false;
}
wxString fname = m_CacheDir + bname + wxT( ".3dc" );
if( !wxFileName::FileExists( fname ) )
{
wxString errmsg = _( "cannot open file" );
std::cerr << " * [3D model] " << errmsg.ToUTF8() << " '";
std::cerr << fname.ToUTF8() << "'\n";
return false;
}
if( NULL != aCacheItem->sceneData )
S3D::DestroyNode( (SGNODE*) aCacheItem->sceneData );
aCacheItem->sceneData = (SCENEGRAPH*)S3D::ReadCache( fname );
if( NULL == aCacheItem->sceneData )
return false;
return true;
}
bool S3D_CACHE::saveCacheData( S3D_CACHE_ENTRY* aCacheItem )
{
if( NULL == aCacheItem )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * NULL passed for aCacheItem\n";
#endif
return false;
}
if( NULL == aCacheItem->sceneData )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * aCacheItem has no valid scene data\n";
#endif
return false;
}
wxString bname = aCacheItem->GetCacheBaseName();
if( bname.empty() )
{
#ifdef DEBUG
std::cerr << " * [3D model] cannot load cached model; no hash available\n";
#endif
return false;
}
if( m_CacheDir.empty() )
{
wxString errmsg = _( "cannot load cached model; config directory unknown" );
std::cerr << " * [3D model] " << errmsg.ToUTF8() << "\n";
return false;
}
wxString fname = m_CacheDir + bname + wxT( ".3dc" );
if( wxFileName::Exists( fname ) )
{
// determine if the file is a regular file
struct stat info;
if( stat( fname.ToUTF8(), &info ) )
return false;
if( !S_ISREG( info.st_mode ) )
{
wxString errmsg = _( "path exists but is not a regular file" );
std::cerr << " * [3D model] " << errmsg.ToUTF8() << " '";
std::cerr << fname.ToUTF8() << "'\n";
return false;
}
}
return S3D::WriteCache( fname, true, (SGNODE*)aCacheItem->sceneData );
}
bool S3D_CACHE::Set3DConfigDir( const wxString& aConfigDir )
{
if( !m_ConfigDir.empty() )
return false;
wxFileName cfgdir( aConfigDir, wxT( "" ) );
cfgdir.Normalize();
if( !cfgdir.DirExists() )
{
cfgdir.Mkdir( wxS_DIR_DEFAULT, wxPATH_MKDIR_FULL );
if( !cfgdir.DirExists() )
{
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
wxString errmsg = _( "failed to create 3D configuration directory" );
std::cerr << " * " << errmsg.ToUTF8() << "\n";
errmsg = _( "config directory" );
std::cerr << " * " << errmsg.ToUTF8() << " '";
std::cerr << cfgdir.GetPath().ToUTF8() << "'\n";
return false;
}
}
m_ConfigDir = cfgdir.GetPath();
// inform the file resolver of the config directory
if( !m_FNResolver->Set3DConfigDir( m_ConfigDir ) )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * could not set 3D Config Directory on filename resolver\n";
std::cerr << " * config directory: '" << m_ConfigDir.ToUTF8() << "'\n";
#endif
}
cfgdir.AppendDir( wxT( "cache" ) );
if( !cfgdir.DirExists() )
{
cfgdir.Mkdir( wxS_DIR_DEFAULT, wxPATH_MKDIR_FULL );
if( !cfgdir.DirExists() )
{
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
wxString errmsg = _( "failed to create 3D cache directory" );
std::cerr << " * " << errmsg.ToUTF8() << "\n";
errmsg = _( "cache directory" );
std::cerr << " * " << errmsg.ToUTF8() << " '";
std::cerr << cfgdir.GetPath().ToUTF8() << "'\n";
return false;
}
}
m_CacheDir = cfgdir.GetPathWithSep();
return true;
}
wxString S3D_CACHE::Get3DConfigDir( bool createDefault )
{
if( !m_ConfigDir.empty() || !createDefault )
return m_ConfigDir;
// note: duplicated from common/common.cpp GetKicadConfigPath() to avoid
// code coupling; ideally the instantiating code should call
// Set3DConfigDir() to set the directory rather than relying on this
// directory remaining the same in future KiCad releases.
wxFileName cfgpath;
// From the wxWidgets wxStandardPaths::GetUserConfigDir() help:
// Unix: ~ (the home directory)
// Windows: "C:\Documents and Settings\username\Application Data"
// Mac: ~/Library/Preferences
cfgpath.AssignDir( wxStandardPaths::Get().GetUserConfigDir() );
#if !defined( __WINDOWS__ ) && !defined( __WXMAC__ )
wxString envstr;
if( !wxGetEnv( wxT( "XDG_CONFIG_HOME" ), &envstr ) || envstr.IsEmpty() )
{
// XDG_CONFIG_HOME is not set, so use the fallback
cfgpath.AppendDir( wxT( ".config" ) );
}
else
{
// Override the assignment above with XDG_CONFIG_HOME
cfgpath.AssignDir( envstr );
}
#endif
cfgpath.AppendDir( wxT( "kicad" ) );
cfgpath.AppendDir( wxT( "3d" ) );
if( !cfgpath.DirExists() )
{
cfgpath.Mkdir( wxS_DIR_DEFAULT, wxPATH_MKDIR_FULL );
}
if( !cfgpath.DirExists() )
{
wxString errmsg = _( "failed to create 3D configuration directory" );
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * " << errmsg.ToUTF8() << "\n";
return wxT( "" );
}
if( Set3DConfigDir( cfgpath.GetPath() ) )
return m_ConfigDir;
return wxEmptyString;
}
bool S3D_CACHE::SetProjectDir( const wxString& aProjDir )
{
bool hasChanged = false;
if( m_FNResolver->SetProjectDir( aProjDir, &hasChanged ) && hasChanged )
{
m_CacheMap.clear();
std::list< S3D_CACHE_ENTRY* >::iterator sL = m_CacheList.begin();
std::list< S3D_CACHE_ENTRY* >::iterator eL = m_CacheList.end();
while( sL != eL )
{
delete *sL;
++sL;
}
m_CacheList.clear();
return true;
}
return false;
}
wxString S3D_CACHE::GetProjectDir( void )
{
return m_FNResolver->GetProjectDir();
}
S3D_FILENAME_RESOLVER* S3D_CACHE::GetResolver( void )
{
return m_FNResolver;
}
std::list< wxString > const* S3D_CACHE::GetFileFilters( void ) const
{
return m_Plugins->GetFileFilters();
}
void S3D_CACHE::FlushCache( void )
{
std::list< S3D_CACHE_ENTRY* >::iterator sCL = m_CacheList.begin();
std::list< S3D_CACHE_ENTRY* >::iterator eCL = m_CacheList.end();
while( sCL != eCL )
{
delete *sCL;
++sCL;
}
m_CacheList.clear();
ClosePlugins();
return;
}
void S3D_CACHE::ClosePlugins( void )
{
if( NULL != m_Plugins )
m_Plugins->ClosePlugins();
return;
}
S3DMODEL* S3D_CACHE::GetModel( const wxString& aModelFileName )
{
S3D_CACHE_ENTRY* cp = NULL;
SCENEGRAPH* sp = load( aModelFileName, &cp );
if( !sp )
return NULL;
if( !cp )
{
#ifdef DEBUG
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] model loaded with no associated S3D_CACHE_ENTRY\n";
#endif
return NULL;
}
if( cp->renderData )
return cp->renderData;
S3DMODEL* mp = S3D::GetModel( sp );
cp->renderData = mp;
return mp;
}
wxString S3D_CACHE::GetModelHash( const wxString& aModelFileName )
{
wxString full3Dpath = m_FNResolver->ResolvePath( aModelFileName );
if( full3Dpath.empty() || !wxFileName::FileExists( full3Dpath ) )
return wxEmptyString;
// check cache if file is already loaded
std::map< wxString, S3D_CACHE_ENTRY*, S3D::rsort_wxString >::iterator mi;
mi = m_CacheMap.find( full3Dpath );
if( mi != m_CacheMap.end() )
return mi->second->GetCacheBaseName();
// a cache item does not exist; search the Filename->Cachename map
S3D_CACHE_ENTRY* cp = NULL;
checkCache( full3Dpath, &cp );
if( NULL != cp )
return cp->GetCacheBaseName();
return wxEmptyString;
}
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