yang686526

how to validate oddbrasterimage scale
how to validate oddbrasterimage scale
hi, all
to create oddbrasterimage, i tried these code.
oddbobjectid createraster( oddbdatabaseptr pdatabase, const char* rastername, const char* imagedefname, const odgepoint3d& point, double width, double height, double wsize, double hsize )
{
oddbblocktableptr ptable = pdatabase->getblocktableid().openobject();
oddbblocktablerecordptr precord = ptable->getat( "*model_space" ).openobject( oddb::kforwrite );
oddbdictionaryptr pimagedict;
oddbobjectid imagedictid = oddbrasterimagedef::imagedictionary( pdatabase );
if ( !imagedictid.isnull() )
pimagedict = imagedictid.safeopenobject( oddb::kforwrite );
if ( !pimagedict.get() )
pimagedict = oddbrasterimagedef::createimagedictionary( pdatabase ).safeopenobject( oddb::kforwrite );
oddbrasterimagedefptr pimagedef = oddbrasterimagedef::createobject();
oddbobjectid imagedefid = pimagedict->setat( imagedefname, pimagedef );
pimagedef->setsourcefilename( rastername );
pimagedef->setimage( odgirasterimagedesc::createobject( width, height ) );
pimagedef->load();
oddbrasterimageptr pimage = oddbrasterimage::createobject();
precord->appendoddbentity( pimage );
pimage->setdatabasedefaults( pdatabase );
pimage->setimagedefid( imagedefid );
pimage->setorientation( point, odgevector3d( wsize, 0, 0 ), odgevector3d( 0, hsize, 0 ) );
pimage->setdisplayopt( oddbrasterimage::kshow, true );
pimage->setdisplayopt( oddbrasterimage::kshowunaligned, true );
pimage->setbrightness( oduint8( 50 ) );
pimage->setcontrast( oduint8( 50 ) );
odgepoint2darray pts;
pts.push_back( odgepoint2d( 0, 0 ) );
pts.push_back( odgepoint2d( width, height ) );
pimage->setclipboundary( pts );
oddbrastervariablesptr prvars = oddbrastervariables: penrastervariables( pdatabase, oddb::kforwrite );
prvars->setuserscale( odgirasterimage::kmillimeter );
prvars->setimageframe( oddbrastervariables::kimageframeabove );
prvars->setimagequality( oddbrastervariables::kimagequalityhigh );
return pimage->objectid();
}
the problem is, until the database is saved to a dwg file, the image is displayed with non-scaled size.
after i save it, the image is displayed with scaled size.
i want the database keep unsaved until the user want it to.
should i call some other functions before display the oddbrasterimage to make the scale valid?
thank you for your help.
junichi yoshimoto

the problem is caused by bugs in dd 1.07. they are fixed already. before next release (a week or so) i suggest you a hack to bypass the bug.
the key moment of it is calling pimage()->imagesize() after imagedef is loaded. it will update image size cached in image entity. this also happens during saving to dwg or dxf.
see also other comments in code below:
oddbobjectid createraster( oddbdatabaseptr pdatabase, const char* rastername,
const char* imagedefname,
const odgepoint3d& point,
// it would be better to use image size in pixels
// from real raster file double width, double height,
double wsize, double hsize )
{
//oddbblocktableptr ptable = pdatabase->getblocktableid().openobject();
//oddbblocktablerecordptr precord = ptable->getat( "*model_space" ).openobject( oddb::kforwrite );
oddbblocktablerecordptr precord = pdatabase->getmodelspaceid().openobject( oddb::kforwrite );
oddbdictionaryptr pimagedict;
oddbobjectid imagedictid = oddbrasterimagedef::imagedictionary( pdatabase );
if ( !imagedictid.isnull() )
pimagedict = imagedictid.safeopenobject( oddb::kforwrite );
if ( !pimagedict.get() )
pimagedict = oddbrasterimagedef::createimagedictionary( pdatabase ).safeopenobject( oddb::kforwrite );
oddbrasterimagedefptr pimagedef = oddbrasterimagedef::createobject();
oddbobjectid imagedefid = pimagedict->setat( imagedefname, pimagedef );
pimagedef->setsourcefilename( rastername );
// next line is senseless
//pimagedef->setimage( odgirasterimagedesc::createobject(width, height ) );
pimagedef->load();
oddbrasterimageptr pimage = oddbrasterimage::createobject();
precord->appendoddbentity( pimage );
pimage->setdatabasedefaults( pdatabase );
pimage->setimagedefid( imagedefid );
pimage->setorientation( point, odgevector3d( wsize, 0, 0 ), odgevector3d( 0, hsize, 0 ) );
pimage->setdisplayopt( oddbrasterimage::kshow, true );
pimage->setdisplayopt( oddbrasterimage::kshowunaligned, true );
pimage->setbrightness( oduint8( 50 ) );
pimage->setcontrast( oduint8( 50 ) );
// setting clip boundary to whole image is not necessary in future releases
// but it is required to avoid 1.07 bug
odgepoint2darray pts;
pts.push_back( odgepoint2d::korigin );
pts.push_back( odgepoint2d(odgepoint2d::korigin + pimage->imagesize()));
pimage->setclipboundary( pts );
// raster variable exist as a single instance per database -
// no need in setting them creating each image
//oddbrastervariablesptr prvars = oddbrastervariables: penrastervariables( pdatabase, oddb::kforwrite );
//prvars->setuserscale( odgirasterimage::kmillimeter );
//prvars->setimageframe( oddbrastervariables::kimageframeabove );
//prvars->setimagequality( oddbrastervariables::kimagequalityhigh );
return pimage->objectid();
}
sergey slezkin

thank you, slezkin.
my problem is solved by the hack, and your comments are very suggestive.
junichi yoshimoto