yang686526

polygonwithholesout

polygonwithholesout
is it necessary to override odgigeometrysimplifier:olygonwithholesout(..)?
if i just override polygonout(...) truetype letters with holes (e.g. e, a, o, b) are not rendered.
how can i force dd to split polygons with holes into 2 or more polygons without holes and to call only polygonout?

klaus
# 11th february 2004, 02:07 am

softdev join date: oct 2002
location: russian federation, spb
posts: 332
hi,
surely, it must not be, but seems it is... we'll fixed it.
now you should to override it and call odgigeometrysimplifier::triangulateshel() passing polygonwithholesout's params in there then you'll get a set of triangles via odgigeometrysimplifier::enumtriangles interface.

dmitry a. novikov
# 11th february 2004, 04:48 am

registered user join date: sep 2003
posts: 12

hi!
how can i convert the polygonwithholes params (oduint32 ncontours, oduint32 *pcounts) into triangulateshell params
(odint32 facelistsize, const odint32* pfacelist).
if i just cast pcounts to (odint32*) triangulateshell crashes.

klaus
# 11th february 2004, 05:46 am

softdev join date: oct 2002
location: russian federation, spb
posts: 332
hi,
i've just implemented odgigeometrysimplifier:olygonwithholesout(), so it will be available in nearest maintainence release:
code:
void odgigeometrysimplifier:olygonwithholesout(oduint32 npoints, const odgepoint3d* ppoints, oduint32 ncontours, oduint32 *pcounts)
{
class _enumtriangles : public enumtriangles
{
void operator = (const _enumtriangles& ) {}
odgigeometrysimplifier& m_target;
const odgepoint3d* m_ppoints;
odgepoint3d m_ptriangle[3];
public:
_enumtriangles(odgigeometrysimplifier& target, const odgepoint3d* ppoints)
: m_target(target)
, m_ppoints(ppoints)
{ }
void triangle( oduint32 , const odint32* ptrianglevertices, const odint32* )
{
m_ptriangle[0] = m_ppoints[*ptrianglevertices++];
m_ptriangle[1] = m_ppoints[*ptrianglevertices++];
m_ptriangle[2] = m_ppoints[*ptrianglevertices++];
m_target.polygonout(3, m_ptriangle, 0);
}
};
odint32array facelist(npoints + ncontours);
int nfacebase = 0;
facelist.push_back( *pcounts );
oduint32 j;
for ( j = 0; j < *pcounts; ++j )
facelist.push_back( j );
nfacebase = j;
for ( oduint32 i = 1; i < ncontours; ++i )
{
++pcounts;
facelist.push_back( -int(*pcounts) ); // hole
for ( j = 0; j < *pcounts; ++j )
facelist.push_back( nfacebase + j );
}
_enumtriangles enumtriangles(*this, ppoints);
triangulateshell(&enumtriangles, npoints, ppoints, facelist.size(), facelist.getptr() );
}

dmitry a. novikov
# 11th february 2004, 08:09 am

registered user join date: sep 2003
posts: 12

hi!
i think there is a problem if there are more than one hole in a polygon. e.g. the letter 'b' and '8' are rendered with only one hole. there is no "top"-hole.
i have one other problem with a dwg-file, which causes triangulateshell to runs into an endless loop.
should i send you this 1.4mb dwg-file?

klaus
# 11th february 2004, 08:25 am

softdev join date: oct 2002
location: russian federation, spb
posts: 332
thanks for the info.
the problem with endless loop triangulateshell() has been already fixed. fix will be available in nearest maintainence release.

dmitry a. novikov
# 13th february 2004, 04:39 am

softdev join date: oct 2002
location: russian federation, spb
posts: 332
hi,
the bug was in odgigeometrysimplifier:olygonwithholesout(). the next code must work fine:
code:
void odgigeometrysimplifier:olygonwithholesout(oduint32 npoints, const odgepoint3d* ppoints, oduint32 ncontours, oduint32 *pcounts)
{
class _enumtriangles : public enumtriangles
{
void operator = (const _enumtriangles& ) {}
odgigeometrysimplifier& m_target;
const odgepoint3d* m_ppoints;
odgepoint3d m_ptriangle[3];
public:
_enumtriangles(odgigeometrysimplifier& target, const odgepoint3d* ppoints)
: m_target(target)
, m_ppoints(ppoints)
{ }
void triangle( oduint32 , const odint32* ptrianglevertices, const odint32* )
{
m_ptriangle[0] = m_ppoints[*ptrianglevertices++];
m_ptriangle[1] = m_ppoints[*ptrianglevertices++];
m_ptriangle[2] = m_ppoints[*ptrianglevertices++];
m_target.polygonout(3, m_ptriangle, 0);
}
};
odint32array facelist(npoints + ncontours);
facelist.push_back( *pcounts );
oduint32 ind = 0, i, j;
for ( i = 0; i < *pcounts; ++i )
facelist.push_back( ind++ );
for ( j = 1; j < ncontours; ++j )
{
++pcounts;
facelist.push_back( -int(*pcounts) ); // hole
for ( i = 0; i < *pcounts; ++i )
facelist.push_back( ind++ );
}
_enumtriangles enumtriangles(*this, ppoints);
triangulateshell(&enumtriangles, npoints, ppoints, facelist.size(), facelist.getptr() );
}

dmitry a. novikov

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hi,
surely, it must not be, but seems it is... we'll fixed it.
now you should to override it and call odgigeometrysimplifier::triangulateshel() passing polygonwithholesout's params in there then you'll get a set of triangles via odgigeometrysimplifier::enumtriangles interface.

hi!
how can i convert the polygonwithholes params (oduint32 ncontours, oduint32 *pcounts) into triangulateshell params
(odint32 facelistsize, const odint32* pfacelist).
if i just cast pcounts to (odint32*) triangulateshell crashes.
hi,
i've just implemented odgigeometrysimplifier:olygonwithholesout(), so it will be available in nearest maintainence release:
code:
void odgigeometrysimplifier:olygonwithholesout(oduint32 npoints, const odgepoint3d* ppoints, oduint32 ncontours, oduint32 *pcounts)
{
class _enumtriangles : public enumtriangles
{
void operator = (const _enumtriangles& ) {}
odgigeometrysimplifier& m_target;
const odgepoint3d* m_ppoints;
odgepoint3d m_ptriangle[3];
public:
_enumtriangles(odgigeometrysimplifier& target, const odgepoint3d* ppoints)
: m_target(target)
, m_ppoints(ppoints)
{ }
void triangle( oduint32 , const odint32* ptrianglevertices, const odint32* )
{
m_ptriangle[0] = m_ppoints[*ptrianglevertices++];
m_ptriangle[1] = m_ppoints[*ptrianglevertices++];
m_ptriangle[2] = m_ppoints[*ptrianglevertices++];
m_target.polygonout(3, m_ptriangle, 0);
}
};
odint32array facelist(npoints + ncontours);
int nfacebase = 0;
facelist.push_back( *pcounts );
oduint32 j;
for ( j = 0; j < *pcounts; ++j )
facelist.push_back( j );
nfacebase = j;
for ( oduint32 i = 1; i < ncontours; ++i )
{
++pcounts;
facelist.push_back( -int(*pcounts) ); // hole
for ( j = 0; j < *pcounts; ++j )
facelist.push_back( nfacebase + j );
}
_enumtriangles enumtriangles(*this, ppoints);
triangulateshell(&enumtriangles, npoints, ppoints, facelist.size(), facelist.getptr() );
}

hi!
i think there is a problem if there are more than one hole in a polygon. e.g. the letter 'b' and '8' are rendered with only one hole. there is no "top"-hole.
i have one other problem with a dwg-file, which causes triangulateshell to runs into an endless loop.
should i send you this 1.4mb dwg-file?
thanks for the info.
the problem with endless loop triangulateshell() has been already fixed. fix will be available in nearest maintainence release.
hi,
the bug was in odgigeometrysimplifier:olygonwithholesout(). the next code must work fine:
code:
void odgigeometrysimplifier:olygonwithholesout(oduint32 npoints, const odgepoint3d* ppoints, oduint32 ncontours, oduint32 *pcounts)
{
class _enumtriangles : public enumtriangles
{
void operator = (const _enumtriangles& ) {}
odgigeometrysimplifier& m_target;
const odgepoint3d* m_ppoints;
odgepoint3d m_ptriangle[3];
public:
_enumtriangles(odgigeometrysimplifier& target, const odgepoint3d* ppoints)
: m_target(target)
, m_ppoints(ppoints)
{ }
void triangle( oduint32 , const odint32* ptrianglevertices, const odint32* )
{
m_ptriangle[0] = m_ppoints[*ptrianglevertices++];
m_ptriangle[1] = m_ppoints[*ptrianglevertices++];
m_ptriangle[2] = m_ppoints[*ptrianglevertices++];
m_target.polygonout(3, m_ptriangle, 0);
}
};
odint32array facelist(npoints + ncontours);
facelist.push_back( *pcounts );
oduint32 ind = 0, i, j;
for ( i = 0; i < *pcounts; ++i )
facelist.push_back( ind++ );
for ( j = 1; j < ncontours; ++j )
{
++pcounts;
facelist.push_back( -int(*pcounts) ); // hole
for ( i = 0; i < *pcounts; ++i )
facelist.push_back( ind++ );
}
_enumtriangles enumtriangles(*this, ppoints);
triangulateshell(&enumtriangles, npoints, ppoints, facelist.size(), facelist.getptr() );
}