OGRGeometry* BuildOgrPolygon(Polygon* poly, OGRCoordinateTransformation* transform)
{
OGRPolygon* result = new OGRPolygon();
list<Point*>* pOuter = poly->outerRing;
list<Point*>::iterator ringIter;
OGRLinearRing* ring = new OGRLinearRing();
for (ringIter = pOuter->begin(); ringIter != pOuter->end(); ringIter++) {
double x = (*ringIter)->X;
double y = (*ringIter)->Y;
if (transform != NULL)
transform->Transform(1, &x, &y);
ring->addPoint(x, y);
}
result->addRingDirectly(ring);
list<list<Point *>*>* innerRings = poly->innerRings;
list<list<Point *>*>::iterator ringsIter;
for (ringsIter = innerRings->begin(); ringsIter != innerRings->end(); ringsIter++) {
ring = new OGRLinearRing();
list<Point*>* currRing = *ringsIter;
for (ringIter = currRing->begin(); ringIter != currRing->end(); ringIter++) {
double x = (*ringIter)->X;
double y = (*ringIter)->Y;
if (transform != NULL)
transform->Transform(1, &x, &y);
ring->addPoint(x, y);
}
result->addRingDirectly(ring);
}
result->closeRings();
return result;
}
OGRFeature *OGRCADLayer::GetFeature( GIntBig nFID )
{
if( poCADLayer.getGeometryCount() <= static_cast<size_t>(nFID)
|| nFID < 0 )
{
return nullptr;
}
OGRFeature *poFeature = nullptr;
CADGeometry *poCADGeometry = poCADLayer.getGeometry( static_cast<size_t>(nFID) );
if( nullptr == poCADGeometry || GetLastErrorCode() != CADErrorCodes::SUCCESS )
{
CPLError( CE_Failure, CPLE_NotSupported,
"Failed to get geometry with ID = " CPL_FRMT_GIB " from layer \"%s\". Libopencad errorcode: %d",
nFID, poCADLayer.getName().c_str(), GetLastErrorCode() );
return nullptr;
}
poFeature = new OGRFeature( poFeatureDefn );
poFeature->SetFID( nFID );
poFeature->SetField( FIELD_NAME_THICKNESS, poCADGeometry->getThickness() );
if( !poCADGeometry->getEED().empty() )
{
std::vector<std::string> asGeometryEED = poCADGeometry->getEED();
std::string sEEDAsOneString = "";
for ( std::vector<std::string>::const_iterator
iter = asGeometryEED.cbegin();
iter != asGeometryEED.cend(); ++iter )
{
sEEDAsOneString += *iter;
sEEDAsOneString += ' ';
}
poFeature->SetField( FIELD_NAME_EXT_DATA, sEEDAsOneString.c_str() );
}
RGBColor stRGB = poCADGeometry->getColor();
CPLString sHexColor;
sHexColor.Printf("#%02X%02X%02X%02X", stRGB.R, stRGB.G, stRGB.B, 255);
poFeature->SetField( FIELD_NAME_COLOR, sHexColor );
CPLString sStyle;
sStyle.Printf("PEN(c:%s,w:5px)", sHexColor.c_str());
poFeature->SetStyleString( sStyle );
std::vector< CADAttrib > oBlockAttrs = poCADGeometry->getBlockAttributes();
for( const CADAttrib& oAttrib : oBlockAttrs )
{
CPLString osTag = oAttrib.getTag();
auto featureAttrIt = asFeaturesAttributes.find( osTag );
if( featureAttrIt != asFeaturesAttributes.end())
{
poFeature->SetField(*featureAttrIt, oAttrib.getTextValue().c_str());
}
}
switch( poCADGeometry->getType() )
{
case CADGeometry::POINT:
{
CADPoint3D * const poCADPoint = ( CADPoint3D* ) poCADGeometry;
CADVector stPositionVector = poCADPoint->getPosition();
poFeature->SetGeometryDirectly( new OGRPoint( stPositionVector.getX(),
stPositionVector.getY(),
stPositionVector.getZ() ) );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADPoint" );
break;
}
case CADGeometry::LINE:
{
CADLine * const poCADLine = ( CADLine* ) poCADGeometry;
OGRLineString *poLS = new OGRLineString();
poLS->addPoint( poCADLine->getStart().getPosition().getX(),
poCADLine->getStart().getPosition().getY(),
poCADLine->getStart().getPosition().getZ() );
poLS->addPoint( poCADLine->getEnd().getPosition().getX(),
poCADLine->getEnd().getPosition().getY(),
poCADLine->getEnd().getPosition().getZ() );
poFeature->SetGeometryDirectly( poLS );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADLine" );
break;
}
case CADGeometry::SOLID:
{
CADSolid * const poCADSolid = ( CADSolid* ) poCADGeometry;
OGRPolygon * poPoly = new OGRPolygon();
OGRLinearRing * poLR = new OGRLinearRing();
std::vector<CADVector> astSolidCorners = poCADSolid->getCorners();
for( size_t i = 0; i < astSolidCorners.size(); ++i )
{
poLR->addPoint( astSolidCorners[i].getX(),
astSolidCorners[i].getY(),
astSolidCorners[i].getZ());
}
poPoly->addRingDirectly( poLR );
poPoly->closeRings();
poFeature->SetGeometryDirectly( poPoly );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADSolid" );
break;
}
case CADGeometry::CIRCLE:
{
CADCircle * poCADCircle = static_cast<CADCircle*>(poCADGeometry);
OGRCircularString * poCircle = new OGRCircularString();
CADVector stCircleCenter = poCADCircle->getPosition();
OGRPoint oCirclePoint1;
oCirclePoint1.setX( stCircleCenter.getX() - poCADCircle->getRadius() );
oCirclePoint1.setY( stCircleCenter.getY() );
oCirclePoint1.setZ( stCircleCenter.getZ() );
poCircle->addPoint( &oCirclePoint1 );
OGRPoint oCirclePoint2;
oCirclePoint2.setX( stCircleCenter.getX() );
oCirclePoint2.setY( stCircleCenter.getY() + poCADCircle->getRadius() );
oCirclePoint2.setZ( stCircleCenter.getZ() );
poCircle->addPoint( &oCirclePoint2 );
OGRPoint oCirclePoint3;
oCirclePoint3.setX( stCircleCenter.getX() + poCADCircle->getRadius() );
oCirclePoint3.setY( stCircleCenter.getY() );
oCirclePoint3.setZ( stCircleCenter.getZ() );
poCircle->addPoint( &oCirclePoint3 );
OGRPoint oCirclePoint4;
oCirclePoint4.setX( stCircleCenter.getX() );
oCirclePoint4.setY( stCircleCenter.getY() - poCADCircle->getRadius() );
oCirclePoint4.setZ( stCircleCenter.getZ() );
poCircle->addPoint( &oCirclePoint4 );
// Close the circle
poCircle->addPoint( &oCirclePoint1 );
/*NOTE: The alternative way:
OGRGeometry *poCircle = OGRGeometryFactory::approximateArcAngles(
poCADCircle->getPosition().getX(),
poCADCircle->getPosition().getY(),
poCADCircle->getPosition().getZ(),
poCADCircle->getRadius(), poCADCircle->getRadius(), 0.0,
0.0, 360.0,
0.0 );
*/
poFeature->SetGeometryDirectly( poCircle );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADCircle" );
break;
}
case CADGeometry::ARC:
{
CADArc * poCADArc = static_cast<CADArc*>(poCADGeometry);
OGRCircularString * poCircle = new OGRCircularString();
// Need at least 3 points in arc
double dfStartAngle = poCADArc->getStartingAngle() * DEG2RAD;
double dfEndAngle = poCADArc->getEndingAngle() * DEG2RAD;
double dfMidAngle = (dfEndAngle + dfStartAngle) / 2;
CADVector stCircleCenter = poCADArc->getPosition();
OGRPoint oCirclePoint;
oCirclePoint.setX( stCircleCenter.getX() + poCADArc->getRadius() *
cos( dfStartAngle ) );
oCirclePoint.setY( stCircleCenter.getY() + poCADArc->getRadius() *
sin( dfStartAngle ) );
oCirclePoint.setZ( stCircleCenter.getZ() );
poCircle->addPoint( &oCirclePoint );
oCirclePoint.setX( stCircleCenter.getX() + poCADArc->getRadius() *
cos( dfMidAngle ) );
oCirclePoint.setY( stCircleCenter.getY() + poCADArc->getRadius() *
sin( dfMidAngle ) );
oCirclePoint.setZ( stCircleCenter.getZ() );
poCircle->addPoint( &oCirclePoint );
oCirclePoint.setX( stCircleCenter.getX() + poCADArc->getRadius() *
cos( dfEndAngle ) );
oCirclePoint.setY( stCircleCenter.getY() + poCADArc->getRadius() *
sin( dfEndAngle ) );
oCirclePoint.setZ( stCircleCenter.getZ() );
poCircle->addPoint( &oCirclePoint );
/*NOTE: alternative way:
OGRGeometry * poArc = OGRGeometryFactory::approximateArcAngles(
poCADArc->getPosition().getX(),
poCADArc->getPosition().getY(),
poCADArc->getPosition().getZ(),
poCADArc->getRadius(), poCADArc->getRadius(), 0.0,
dfStartAngle,
dfStartAngle > dfEndAngle ?
( dfEndAngle + 360.0f ) :
dfEndAngle,
0.0 );
*/
poFeature->SetGeometryDirectly( poCircle );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADArc" );
break;
}
case CADGeometry::FACE3D:
{
CADFace3D * const poCADFace = ( CADFace3D* ) poCADGeometry;
OGRPolygon * poPoly = new OGRPolygon();
OGRLinearRing * poLR = new OGRLinearRing();
for ( size_t i = 0; i < 3; ++i )
{
poLR->addPoint(
poCADFace->getCorner( i ).getX(),
poCADFace->getCorner( i ).getY(),
poCADFace->getCorner( i ).getZ()
);
}
if ( !(poCADFace->getCorner( 2 ) == poCADFace->getCorner( 3 )) )
{
poLR->addPoint(
poCADFace->getCorner( 3 ).getX(),
poCADFace->getCorner( 3 ).getY(),
poCADFace->getCorner( 3 ).getZ()
);
}
poPoly->addRingDirectly( poLR );
poPoly->closeRings();
poFeature->SetGeometryDirectly( poPoly );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADFace3D" );
break;
}
case CADGeometry::LWPOLYLINE:
{
CADLWPolyline * const poCADLWPolyline = ( CADLWPolyline* ) poCADGeometry;
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADLWPolyline" );
/*
* Excessive check, like in DXF driver.
* I tried to make a single-point polyline, but couldn't make it.
* Probably this check should be removed.
*/
if( poCADLWPolyline->getVertexCount() == 1 )
{
poFeature->SetGeometryDirectly(
new OGRPoint( poCADLWPolyline->getVertex(0).getX(),
poCADLWPolyline->getVertex(0).getY(),
poCADLWPolyline->getVertex(0).getZ() )
);
break;
}
/*
* If polyline has no arcs, handle it in easy way.
*/
OGRLineString * poLS = new OGRLineString();
if( poCADLWPolyline->getBulges().empty() )
{
for( size_t i = 0; i < poCADLWPolyline->getVertexCount(); ++i )
{
CADVector stVertex = poCADLWPolyline->getVertex( i );
poLS->addPoint( stVertex.getX(),
stVertex.getY(),
stVertex.getZ()
);
}
poFeature->SetGeometryDirectly( poLS );
break;
}
/*
* Last case - if polyline has mixed arcs and lines.
*/
bool bLineStringStarted = false;
std::vector< double > adfBulges = poCADLWPolyline->getBulges();
const size_t nCount = std::min(adfBulges.size(), poCADLWPolyline->getVertexCount());
for( size_t iCurrentVertex = 0; iCurrentVertex + 1 < nCount; iCurrentVertex++ )
{
CADVector stCurrentVertex = poCADLWPolyline->getVertex( iCurrentVertex );
CADVector stNextVertex = poCADLWPolyline->getVertex( iCurrentVertex + 1 );
double dfLength = sqrt( pow( stNextVertex.getX() - stCurrentVertex.getX(), 2 )
+ pow( stNextVertex.getY() - stCurrentVertex.getY(), 2 ) );
/*
* Handling straight polyline segment.
*/
if( ( dfLength == 0 ) || ( adfBulges[iCurrentVertex] == 0 ) )
{
if( !bLineStringStarted )
{
poLS->addPoint( stCurrentVertex.getX(),
stCurrentVertex.getY(),
stCurrentVertex.getZ()
);
bLineStringStarted = true;
}
poLS->addPoint( stNextVertex.getX(),
stNextVertex.getY(),
stNextVertex.getZ()
);
}
else
{
double dfSegmentBulge = adfBulges[iCurrentVertex];
double dfH = ( dfSegmentBulge * dfLength ) / 2;
if( dfH == 0.0 )
dfH = 1.0; // just to avoid a division by zero
double dfRadius = ( dfH / 2 ) + ( dfLength * dfLength / ( 8 * dfH ) );
double dfOgrArcRotation = 0, dfOgrArcRadius = fabs( dfRadius );
/*
* Set arc's direction and keep bulge positive.
*/
bool bClockwise = ( dfSegmentBulge < 0 );
if( bClockwise )
dfSegmentBulge *= -1;
/*
* Get arc's center point.
*/
double dfSaggita = fabs( dfSegmentBulge * ( dfLength / 2.0 ) );
double dfApo = bClockwise ? -( dfOgrArcRadius - dfSaggita ) :
-( dfSaggita - dfOgrArcRadius );
CADVector stVertex;
stVertex.setX( stCurrentVertex.getX() - stNextVertex.getX() );
stVertex.setY( stCurrentVertex.getY() - stNextVertex.getY() );
stVertex.setZ( stCurrentVertex.getZ() );
CADVector stMidPoint;
stMidPoint.setX( stNextVertex.getX() + 0.5 * stVertex.getX() );
stMidPoint.setY( stNextVertex.getY() + 0.5 * stVertex.getY() );
stMidPoint.setZ( stVertex.getZ() );
CADVector stPperp;
stPperp.setX( stVertex.getY() );
stPperp.setY( -stVertex.getX() );
double dfStPperpLength = sqrt( stPperp.getX() * stPperp.getX() +
stPperp.getY() * stPperp.getY() );
// TODO: Check that length isnot 0
stPperp.setX( stPperp.getX() / dfStPperpLength );
stPperp.setY( stPperp.getY() / dfStPperpLength );
CADVector stOgrArcCenter;
stOgrArcCenter.setX( stMidPoint.getX() + ( stPperp.getX() * dfApo ) );
stOgrArcCenter.setY( stMidPoint.getY() + ( stPperp.getY() * dfApo ) );
/*
* Get the line's general vertical direction ( -1 = down, +1 = up ).
*/
double dfLineDir = stNextVertex.getY() >
stCurrentVertex.getY() ? 1.0f : -1.0f;
/*
* Get arc's starting angle.
*/
double dfA = atan2( ( stOgrArcCenter.getY() - stCurrentVertex.getY() ),
( stOgrArcCenter.getX() - stCurrentVertex.getX() ) ) * DEG2RAD;
if( bClockwise && ( dfLineDir == 1.0 ) )
dfA += ( dfLineDir * 180.0 );
double dfOgrArcStartAngle = dfA > 0.0 ? -( dfA - 180.0 ) :
-( dfA + 180.0 );
/*
* Get arc's ending angle.
*/
dfA = atan2( ( stOgrArcCenter.getY() - stNextVertex.getY() ),
( stOgrArcCenter.getX() - stNextVertex.getX() ) ) * DEG2RAD;
if( bClockwise && ( dfLineDir == 1.0 ) )
dfA += ( dfLineDir * 180.0 );
double dfOgrArcEndAngle = dfA > 0.0 ? -( dfA - 180.0 ) :
-( dfA + 180.0 );
if( !bClockwise && ( dfOgrArcStartAngle < dfOgrArcEndAngle) )
dfOgrArcEndAngle = -180.0 + ( dfLineDir * dfA );
if( bClockwise && ( dfOgrArcStartAngle > dfOgrArcEndAngle ) )
dfOgrArcEndAngle += 360.0;
/*
* Flip arc's rotation if necessary.
*/
if( bClockwise && ( dfLineDir == 1.0 ) )
dfOgrArcRotation = dfLineDir * 180.0;
/*
* Tessellate the arc segment and append to the linestring.
*/
OGRLineString * poArcpoLS =
( OGRLineString * ) OGRGeometryFactory::approximateArcAngles(
stOgrArcCenter.getX(), stOgrArcCenter.getY(), stOgrArcCenter.getZ(),
dfOgrArcRadius, dfOgrArcRadius, dfOgrArcRotation,
dfOgrArcStartAngle,dfOgrArcEndAngle,
0.0 );
poLS->addSubLineString( poArcpoLS );
delete( poArcpoLS );
}
}
if( poCADLWPolyline->isClosed() )
{
poLS->addPoint( poCADLWPolyline->getVertex(0).getX(),
poCADLWPolyline->getVertex(0).getY(),
poCADLWPolyline->getVertex(0).getZ()
);
}
poFeature->SetGeometryDirectly( poLS );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADLWPolyline" );
break;
}
// TODO: Unsupported smooth lines
case CADGeometry::POLYLINE3D:
{
CADPolyline3D * const poCADPolyline3D = ( CADPolyline3D* ) poCADGeometry;
OGRLineString * poLS = new OGRLineString();
for( size_t i = 0; i < poCADPolyline3D->getVertexCount(); ++i )
{
CADVector stVertex = poCADPolyline3D->getVertex( i );
poLS->addPoint( stVertex.getX(),
stVertex.getY(),
stVertex.getZ() );
}
poFeature->SetGeometryDirectly( poLS );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADPolyline3D" );
break;
}
case CADGeometry::TEXT:
{
CADText * const poCADText = ( CADText * ) poCADGeometry;
OGRPoint * poPoint = new OGRPoint( poCADText->getPosition().getX(),
poCADText->getPosition().getY(),
poCADText->getPosition().getZ() );
CPLString sTextValue = CADRecode( poCADText->getTextValue(), nDWGEncoding );
poFeature->SetField( FIELD_NAME_TEXT, sTextValue );
poFeature->SetGeometryDirectly( poPoint );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADText" );
sStyle.Printf("LABEL(f:\"Arial\",t:\"%s\",c:%s)", sTextValue.c_str(),
sHexColor.c_str());
poFeature->SetStyleString( sStyle );
break;
}
case CADGeometry::MTEXT:
{
CADMText * const poCADMText = ( CADMText * ) poCADGeometry;
OGRPoint * poPoint = new OGRPoint( poCADMText->getPosition().getX(),
poCADMText->getPosition().getY(),
poCADMText->getPosition().getZ() );
CPLString sTextValue = CADRecode( poCADMText->getTextValue(), nDWGEncoding );
poFeature->SetField( FIELD_NAME_TEXT, sTextValue );
poFeature->SetGeometryDirectly( poPoint );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADMText" );
sStyle.Printf("LABEL(f:\"Arial\",t:\"%s\",c:%s)", sTextValue.c_str(),
sHexColor.c_str());
poFeature->SetStyleString( sStyle );
break;
}
case CADGeometry::SPLINE:
{
CADSpline * const poCADSpline = ( CADSpline * ) poCADGeometry;
OGRLineString * poLS = new OGRLineString();
// TODO: Interpolate spline as points or curves
for( size_t i = 0; i < poCADSpline->getControlPoints().size(); ++i )
{
poLS->addPoint( poCADSpline->getControlPoints()[i].getX(),
poCADSpline->getControlPoints()[i].getY(),
poCADSpline->getControlPoints()[i].getZ() );
}
poFeature->SetGeometryDirectly( poLS );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADSpline" );
break;
}
case CADGeometry::ELLIPSE:
{
CADEllipse * poCADEllipse = static_cast<CADEllipse*>(poCADGeometry);
// FIXME: Start/end angles should be swapped to work exactly as DXF driver.
// is it correct?
double dfStartAngle = -1 * poCADEllipse->getEndingAngle() * DEG2RAD;
double dfEndAngle = -1 * poCADEllipse->getStartingAngle() * DEG2RAD;
double dfAxisRatio = poCADEllipse->getAxisRatio();
dfStartAngle = fmod(dfStartAngle, 360.0);
dfEndAngle = fmod(dfEndAngle, 360.0);
if( dfStartAngle > dfEndAngle )
dfEndAngle += 360.0;
CADVector vectPosition = poCADEllipse->getPosition();
CADVector vectSMAxis = poCADEllipse->getSMAxis();
double dfPrimaryRadius, dfSecondaryRadius;
double dfRotation;
dfPrimaryRadius = sqrt( vectSMAxis.getX() * vectSMAxis.getX()
+ vectSMAxis.getY() * vectSMAxis.getY()
+ vectSMAxis.getZ() * vectSMAxis.getZ() );
dfSecondaryRadius = dfAxisRatio * dfPrimaryRadius;
dfRotation = -1 * atan2( vectSMAxis.getY(), vectSMAxis.getX() ) * DEG2RAD;
OGRGeometry *poEllipse =
OGRGeometryFactory::approximateArcAngles(
vectPosition.getX(), vectPosition.getY(), vectPosition.getZ(),
dfPrimaryRadius, dfSecondaryRadius, dfRotation,
dfStartAngle, dfEndAngle, 0.0 );
poFeature->SetGeometryDirectly( poEllipse );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADEllipse" );
break;
}
case CADGeometry::ATTDEF:
{
CADAttdef * const poCADAttdef = ( CADAttdef* ) poCADGeometry;
OGRPoint * poPoint = new OGRPoint( poCADAttdef->getPosition().getX(),
poCADAttdef->getPosition().getY(),
poCADAttdef->getPosition().getZ() );
CPLString sTextValue = CADRecode( poCADAttdef->getTag(), nDWGEncoding );
poFeature->SetField( FIELD_NAME_TEXT, sTextValue );
poFeature->SetGeometryDirectly( poPoint );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADAttdef" );
sStyle.Printf("LABEL(f:\"Arial\",t:\"%s\",c:%s)", sTextValue.c_str(),
sHexColor.c_str());
poFeature->SetStyleString( sStyle );
break;
}
default:
{
CPLError( CE_Warning, CPLE_NotSupported,
"Unhandled feature. Skipping it." );
poFeature->SetField( FIELD_NAME_GEOMTYPE, "CADUnknown" );
delete poCADGeometry;
return poFeature;
}
}
delete poCADGeometry;
poFeature->GetGeometryRef()->assignSpatialReference( poSpatialRef );
return poFeature;
}