OGRErr OGRDXFLayer::CollectPolylinePath( OGRGeometryCollection *poGC )
{
int nCode;
char szLineBuf[257];
DXFSmoothPolyline oSmoothPolyline;
double dfBulge = 0.0;
double dfX = 0.0, dfY = 0.0;
int bHaveX = FALSE, bHaveY = FALSE;
int bIsClosed = FALSE;
int nVertexCount = -1;
int bHaveBulges = FALSE;
/* -------------------------------------------------------------------- */
/* Read the boundary path type. */
/* -------------------------------------------------------------------- */
while( (nCode = poDS->ReadValue(szLineBuf,sizeof(szLineBuf))) > 0 )
{
if( nVertexCount > 0 && (int) oSmoothPolyline.size() == nVertexCount )
break;
switch( nCode )
{
case 93:
nVertexCount = atoi(szLineBuf);
break;
case 72:
bHaveBulges = atoi(szLineBuf);
break;
case 73:
bIsClosed = atoi(szLineBuf);
break;
case 10:
if( bHaveX && bHaveY )
{
oSmoothPolyline.AddPoint(dfX, dfY, 0.0, dfBulge);
dfBulge = 0.0;
bHaveY = FALSE;
}
dfX = CPLAtof(szLineBuf);
bHaveX = TRUE;
break;
case 20:
if( bHaveX && bHaveY )
{
oSmoothPolyline.AddPoint( dfX, dfY, 0.0, dfBulge );
dfBulge = 0.0;
bHaveX = bHaveY = FALSE;
}
dfY = CPLAtof(szLineBuf);
bHaveY = TRUE;
if( bHaveX && bHaveY && !bHaveBulges )
{
oSmoothPolyline.AddPoint( dfX, dfY, 0.0, dfBulge );
dfBulge = 0.0;
bHaveX = bHaveY = FALSE;
}
break;
case 42:
dfBulge = CPLAtof(szLineBuf);
if( bHaveX && bHaveY )
{
oSmoothPolyline.AddPoint( dfX, dfY, 0.0, dfBulge );
dfBulge = 0.0;
bHaveX = bHaveY = FALSE;
}
break;
default:
break;
}
}
if( nCode != 10 && nCode != 20 && nCode != 42 && nCode >= 0)
poDS->UnreadValue();
if( bHaveX && bHaveY )
oSmoothPolyline.AddPoint(dfX, dfY, 0.0, dfBulge);
if( bIsClosed )
oSmoothPolyline.Close();
poGC->addGeometryDirectly( oSmoothPolyline.Tesselate() );
/* -------------------------------------------------------------------- */
/* Skip through source boundary objects if present. */
/* -------------------------------------------------------------------- */
nCode = poDS->ReadValue(szLineBuf,sizeof(szLineBuf));
if( nCode != 97 )
{
if (nCode < 0)
return OGRERR_FAILURE;
poDS->UnreadValue();
}
else
{
int iObj, nObjCount = atoi(szLineBuf);
for( iObj = 0; iObj < nObjCount; iObj++ )
{
if (poDS->ReadValue( szLineBuf, sizeof(szLineBuf) ) < 0)
return OGRERR_FAILURE;
}
}
return OGRERR_NONE;
}
OGRErr OGRDXFLayer::CollectPolylinePath( OGRGeometryCollection *poGC,
const double dfElevation )
{
int nCode = 0;
char szLineBuf[257];
DXFSmoothPolyline oSmoothPolyline;
double dfBulge = 0.0;
double dfX = 0.0;
double dfY = 0.0;
bool bHaveX = false;
bool bHaveY = false;
bool bIsClosed = false;
int nVertexCount = -1;
bool bHaveBulges = false;
/* -------------------------------------------------------------------- */
/* Read the boundary path type. */
/* -------------------------------------------------------------------- */
while( (nCode = poDS->ReadValue(szLineBuf,sizeof(szLineBuf))) > 0 )
{
if( nVertexCount > 0 && (int) oSmoothPolyline.size() == nVertexCount )
break;
switch( nCode )
{
case 93:
nVertexCount = atoi(szLineBuf);
break;
case 72:
bHaveBulges = CPL_TO_BOOL(atoi(szLineBuf));
break;
case 73:
bIsClosed = CPL_TO_BOOL(atoi(szLineBuf));
break;
case 10:
if( bHaveX && bHaveY )
{
oSmoothPolyline.AddPoint(dfX, dfY, dfElevation, dfBulge);
dfBulge = 0.0;
bHaveY = false;
}
dfX = CPLAtof(szLineBuf);
bHaveX = true;
break;
case 20:
if( bHaveX && bHaveY )
{
oSmoothPolyline.AddPoint( dfX, dfY, dfElevation, dfBulge );
dfBulge = 0.0;
bHaveX = false;
}
dfY = CPLAtof(szLineBuf);
bHaveY = true;
if( bHaveX && bHaveY && !bHaveBulges )
{
oSmoothPolyline.AddPoint( dfX, dfY, dfElevation, dfBulge );
dfBulge = 0.0;
bHaveX = false;
bHaveY = false;
}
break;
case 42:
dfBulge = CPLAtof(szLineBuf);
if( bHaveX && bHaveY )
{
oSmoothPolyline.AddPoint( dfX, dfY, dfElevation, dfBulge );
dfBulge = 0.0;
bHaveX = false;
bHaveY = false;
}
break;
default:
break;
}
}
if( nCode < 0 )
{
DXF_LAYER_READER_ERROR();
return OGRERR_FAILURE;
}
if( nCode != 10 && nCode != 20 && nCode != 42 )
poDS->UnreadValue();
if( bHaveX && bHaveY )
oSmoothPolyline.AddPoint(dfX, dfY, dfElevation, dfBulge);
if( bIsClosed )
oSmoothPolyline.Close();
if(oSmoothPolyline.IsEmpty())
{
return OGRERR_FAILURE;
}
poGC->addGeometryDirectly( oSmoothPolyline.Tesselate() );
/* -------------------------------------------------------------------- */
/* Skip through source boundary objects if present. */
/* -------------------------------------------------------------------- */
nCode = poDS->ReadValue(szLineBuf,sizeof(szLineBuf));
if( nCode != 97 )
{
if (nCode < 0)
return OGRERR_FAILURE;
poDS->UnreadValue();
}
else
{
int iObj, nObjCount = atoi(szLineBuf);
for( iObj = 0; iObj < nObjCount; iObj++ )
{
if (poDS->ReadValue( szLineBuf, sizeof(szLineBuf) ) < 0)
return OGRERR_FAILURE;
}
}
return OGRERR_NONE;
}