C++ OGRFeature::SetStyleString方法代码示例

//.........这里部分代码省略.........
    oLine.setPoint( 1,
                    dfArrowX2 - dfVec2X*3 - dfVec1X,
                    dfArrowY2 - dfVec2Y*3 - dfVec1Y );
    poMLS->addGeometry( &oLine );

    poFeature->SetGeometryDirectly( poMLS );

    PrepareLineStyle( poFeature );

/* -------------------------------------------------------------------- */
/*      Is the layer disabled/hidden/frozen/off?                        */
/* -------------------------------------------------------------------- */
    CPLString osLayer = poFeature->GetFieldAsString("Layer");

    int bHidden =
        EQUAL(poDS->LookupLayerProperty( osLayer, "Hidden" ), "1");

/* -------------------------------------------------------------------- */
/*      Work out the color for this feature.                            */
/* -------------------------------------------------------------------- */
    int nColor = 256;

    if( oStyleProperties.count("Color") > 0 )
        nColor = atoi(oStyleProperties["Color"]);

    // Use layer color?
    if( nColor < 1 || nColor > 255 )
    {
        const char *pszValue = poDS->LookupLayerProperty( osLayer, "Color" );
        if( pszValue != NULL )
            nColor = atoi(pszValue);
    }

    if( nColor < 1 || nColor > 255 )
        nColor = 8;

/* -------------------------------------------------------------------- */
/*      Prepare a new feature to serve as the dimension text label      */
/*      feature.  We will push it onto the layer as a pending           */
/*      feature for the next feature read.                              */
/* -------------------------------------------------------------------- */

    // a single space suppresses labeling.
    if( osText == " " )
        return poFeature;

    OGRFeature *poLabelFeature = poFeature->Clone();

    poLabelFeature->SetGeometryDirectly( new OGRPoint( oTextPos.x, oTextPos.y ) );

    // Do we need to compute the dimension value?
    if( osText.empty() )
    {
        FormatDimension( osText, POINT_DIST( oArrow1.x, oArrow1.y,
                                             dfArrowX2, dfArrowY2 ) );
    }

    CPLString osStyle;
    char szBuffer[64];
    char* pszComma = NULL;

    osStyle.Printf("LABEL(f:\"Arial\",t:\"%s\",p:5",osText.c_str());

    if( dfAngle != 0.0 )
    {
        CPLsnprintf(szBuffer, sizeof(szBuffer), "%.3g", dfAngle);
        pszComma = strchr(szBuffer, ',');
        if (pszComma)
            *pszComma = '.';
        osStyle += CPLString().Printf(",a:%s", szBuffer);
    }

    if( dfHeight != 0.0 )
    {
        CPLsnprintf(szBuffer, sizeof(szBuffer), "%.3g", dfHeight);
        pszComma = strchr(szBuffer, ',');
        if (pszComma)
            *pszComma = '.';
        osStyle += CPLString().Printf(",s:%sg", szBuffer);
    }

    const unsigned char *pabyDWGColors = ACGetColorTable();

    snprintf( szBuffer, sizeof(szBuffer), ",c:#%02x%02x%02x",
              pabyDWGColors[nColor*3+0],
              pabyDWGColors[nColor*3+1],
              pabyDWGColors[nColor*3+2] );
    osStyle += szBuffer;

    if( bHidden )
        osStyle += "00";

    osStyle += ")";

    poLabelFeature->SetStyleString( osStyle );

    apoPendingFeatures.push( poLabelFeature );

    return poFeature;
}

OGRFeature *OGROpenAirLabelLayer::GetNextRawFeature()
{
    const char* pszLine;
    double dfLat = 0, dfLon = 0;
    int bHasCoord = FALSE;

    while(TRUE)
    {
        pszLine = CPLReadLine2L(fpOpenAir, 1024, NULL);
        if (pszLine == NULL)
            return NULL;

        if (pszLine[0] == '*' || pszLine[0] == '\0')
            continue;

        if (EQUALN(pszLine, "AC ", 3))
        {
            if (osCLASS.size() != 0)
            {
                osNAME = "";
                osCEILING = "";
                osFLOOR = "";
            }
            osCLASS = pszLine + 3;
        }
        else if (EQUALN(pszLine, "AN ", 3))
            osNAME = pszLine + 3;
        else if (EQUALN(pszLine, "AH ", 3))
            osCEILING = pszLine + 3;
        else if (EQUALN(pszLine, "AL ", 3))
            osFLOOR = pszLine + 3;
        else if (EQUALN(pszLine, "AT ", 3))
        {
            bHasCoord = OGROpenAirGetLatLon(pszLine + 3, dfLat, dfLon);
            break;
        }
    }

    OGRFeature* poFeature = new OGRFeature(poFeatureDefn);
    poFeature->SetField(0, osCLASS.c_str());
    poFeature->SetField(1, osNAME.c_str());
    poFeature->SetField(2, osFLOOR.c_str());
    poFeature->SetField(3, osCEILING.c_str());

    CPLString osStyle;
    osStyle.Printf("LABEL(t:\"%s\")", osNAME.c_str());
    poFeature->SetStyleString(osStyle.c_str());

    if (bHasCoord)
    {
        OGRPoint* poPoint = new OGRPoint(dfLon, dfLat);
        poPoint->assignSpatialReference(poSRS);
        poFeature->SetGeometryDirectly(poPoint);
    }

    poFeature->SetFID(nNextFID++);

    return poFeature;
}

//.........这里部分代码省略.........
                oLR.addPoint(dfSecondLon, dfSecondLat);

                /* dfLastLat = oLR.getY(oLR.getNumPoints() - 1); */
                /* dfLastLon = oLR.getX(oLR.getNumPoints() - 1); */
            }
            CSLDestroy(papszTokens);
        }
        else if ((EQUALN(pszLine, "DC ", 3) || EQUALN(pszLine, "DC=", 3)) &&
                 (bHasCenter || strstr(pszLine, "V X=") != NULL))
        {
            if (!bHasCenter)
            {
                const char* pszVX = strstr(pszLine, "V X=");
                bHasCenter = OGROpenAirGetLatLon(pszVX, dfCenterLat, dfCenterLon);
            }
            if (bHasCenter)
            {
                pszLine += 3;

                double dfRADIUS = CPLAtof(pszLine) * 1852;

                double dfAngle;
                double dfLat, dfLon;
                for(dfAngle = 0; dfAngle < 360; dfAngle += 1)
                {
                    OGRXPlane_ExtendPosition(dfCenterLat, dfCenterLon,
                                             dfRADIUS, dfAngle, &dfLat, &dfLon);
                    oLR.addPoint(dfLon, dfLat);
                }
                OGRXPlane_ExtendPosition(dfCenterLat, dfCenterLon,
                                         dfRADIUS, 0, &dfLat, &dfLon);
                oLR.addPoint(dfLon, dfLat);

                /* dfLastLat = oLR.getY(oLR.getNumPoints() - 1); */
                /* dfLastLon = oLR.getX(oLR.getNumPoints() - 1); */
            }
        }
        else if (EQUALN(pszLine, "V X=", 4))
        {
            bHasCenter =
                    OGROpenAirGetLatLon(pszLine + 4, dfCenterLat, dfCenterLon);
        }
        else if (EQUALN(pszLine, "V D=-", 5))
        {
            bClockWise = FALSE;
        }
        else if (EQUALN(pszLine, "V D=+", 5))
        {
            bClockWise = TRUE;
        }
        else
        {
            //CPLDebug("OpenAir", "Unexpected content : %s", pszLine);
        }
    }

    OGRFeature* poFeature = new OGRFeature(poFeatureDefn);
    poFeature->SetField(0, osCLASS.c_str());
    poFeature->SetField(1, osNAME.c_str());
    poFeature->SetField(2, osFLOOR.c_str());
    poFeature->SetField(3, osCEILING.c_str());

    if (sStyle.penStyle != -1 || sStyle.fillR != -1)
    {
        CPLString osStyle;
        if (sStyle.penStyle != -1)
        {
            osStyle += CPLString().Printf("PEN(c:#%02X%02X%02X,w:%dpt",
                                 sStyle.penR, sStyle.penG, sStyle.penB,
                                 sStyle.penWidth);
            if (sStyle.penStyle == 1)
                osStyle += ",p:\"5px 5px\"";
            osStyle += ")";
        }
        if (sStyle.fillR != -1)
        {
            if (osStyle.size() != 0)
                osStyle += ";";
            osStyle += CPLString().Printf("BRUSH(fc:#%02X%02X%02X)",
                                 sStyle.fillR, sStyle.fillG, sStyle.fillB);
        }
        else
        {
            if (osStyle.size() != 0)
                osStyle += ";";
            osStyle += "BRUSH(fc:#00000000,id:\"ogr-brush-1\")";
        }
        if (osStyle.size() != 0)
            poFeature->SetStyleString(osStyle);
    }

    OGRPolygon* poPoly = new OGRPolygon();
    oLR.closeRings();
    poPoly->addRing(&oLR);
    poPoly->assignSpatialReference(poSRS);
    poFeature->SetGeometryDirectly(poPoly);
    poFeature->SetFID(nNextFID++);

    return poFeature;
}

OGRFeature *OGRDWGLayer::TranslateHATCH( OdDbEntityPtr poEntity )

{
    OGRFeature *poFeature = new OGRFeature( poFeatureDefn );
    OdDbHatchPtr poHatch = OdDbHatch::cast( poEntity );
    OGRGeometryCollection oGC;

    TranslateGenericProperties( poFeature, poEntity );

    poFeature->SetField( "Text", 
                         (const char *) poHatch->patternName() );

/* -------------------------------------------------------------------- */
/*      Collect the loops.                                              */
/* -------------------------------------------------------------------- */
    for( int i = 0; i < poHatch->numLoops(); i++ )
    {
        DWGCollectBoundaryLoop( poHatch, i, &oGC );
    }

/* -------------------------------------------------------------------- */
/*      Try to turn the set of lines into something useful.             */
/* -------------------------------------------------------------------- */
    OGRErr eErr;

    OGRGeometryH hFinalGeom = 
        OGRBuildPolygonFromEdges( (OGRGeometryH) &oGC,
                                  TRUE, TRUE, 0.0000001, &eErr );

    poFeature->SetGeometryDirectly( (OGRGeometry *) hFinalGeom );

/* -------------------------------------------------------------------- */
/*      Work out the color for this feature.  For now we just assume    */
/*      solid fill.  We cannot trivially translate the various sorts    */
/*      of hatching.                                                    */
/* -------------------------------------------------------------------- */
    CPLString osLayer = poFeature->GetFieldAsString("Layer");

    int nColor = 256;

    if( oStyleProperties.count("Color") > 0 )
        nColor = atoi(oStyleProperties["Color"]);

    // Use layer color? 
    if( nColor < 1 || nColor > 255 )
    {
        const char *pszValue = poDS->LookupLayerProperty( osLayer, "Color" );
        if( pszValue != NULL )
            nColor = atoi(pszValue);
    }
        
/* -------------------------------------------------------------------- */
/*      Setup the style string.                                         */
/* -------------------------------------------------------------------- */
    if( nColor >= 1 && nColor <= 255 )
    {
        CPLString osStyle;
        const unsigned char *pabyDWGColors = ACGetColorTable();
        
        osStyle.Printf( "BRUSH(fc:#%02x%02x%02x)",
                        pabyDWGColors[nColor*3+0],
                        pabyDWGColors[nColor*3+1],
                        pabyDWGColors[nColor*3+2] );
        
        poFeature->SetStyleString( osStyle );
    }

    return poFeature;
}

OGRFeature *OGRDXFLayer::TranslateHATCH()

{
    char szLineBuf[257];
    int nCode;
    OGRFeature *poFeature = new OGRFeature( poFeatureDefn );

    CPLString osHatchPattern;
    int nFillFlag = 0;
    OGRGeometryCollection oGC;

    while( (nCode = poDS->ReadValue(szLineBuf,sizeof(szLineBuf))) > 0 )
    {
        switch( nCode )
        {
          case 70:
            nFillFlag = atoi(szLineBuf);
            break;

          case 2:
            osHatchPattern = szLineBuf;
            poFeature->SetField( "Text", osHatchPattern.c_str() );
            break;

          case 91:
          {
              int nBoundaryPathCount = atoi(szLineBuf);
              int iBoundary;

              for( iBoundary = 0; iBoundary < nBoundaryPathCount; iBoundary++ )
              {
                  if (CollectBoundaryPath( &oGC ) != OGRERR_NONE)
                      break;
              }
          }
          break;

          default:
            TranslateGenericProperty( poFeature, nCode, szLineBuf );
            break;
        }
    }

    if( nCode == 0 )
        poDS->UnreadValue();

/* -------------------------------------------------------------------- */
/*      Try to turn the set of lines into something useful.             */
/* -------------------------------------------------------------------- */
    OGRErr eErr;

    OGRGeometry* poFinalGeom = (OGRGeometry *)
        OGRBuildPolygonFromEdges( (OGRGeometryH) &oGC,
                                  TRUE, TRUE, 0.0000001, &eErr );
    if( eErr != OGRERR_NONE )
    {
        delete poFinalGeom;
        OGRMultiLineString* poMLS = new OGRMultiLineString();
        for(int i=0;i<oGC.getNumGeometries();i++)
            poMLS->addGeometry(oGC.getGeometryRef(i));
        poFinalGeom = poMLS;
    }

    ApplyOCSTransformer( poFinalGeom );
    poFeature->SetGeometryDirectly( poFinalGeom );

/* -------------------------------------------------------------------- */
/*      Work out the color for this feature.  For now we just assume    */
/*      solid fill.  We cannot trivially translate the various sorts    */
/*      of hatching.                                                    */
/* -------------------------------------------------------------------- */
    CPLString osLayer = poFeature->GetFieldAsString("Layer");

    int nColor = 256;

    if( oStyleProperties.count("Color") > 0 )
        nColor = atoi(oStyleProperties["Color"]);

    // Use layer color? 
    if( nColor < 1 || nColor > 255 )
    {
        const char *pszValue = poDS->LookupLayerProperty( osLayer, "Color" );
        if( pszValue != NULL )
            nColor = atoi(pszValue);
    }
        
/* -------------------------------------------------------------------- */
/*      Setup the style string.                                         */
/* -------------------------------------------------------------------- */
    if( nColor >= 1 && nColor <= 255 )
    {
        CPLString osStyle;
        const unsigned char *pabyDXFColors = ACGetColorTable();
        
        osStyle.Printf( "BRUSH(fc:#%02x%02x%02x)",
                        pabyDXFColors[nColor*3+0],
                        pabyDXFColors[nColor*3+1],
                        pabyDXFColors[nColor*3+2] );
        
        poFeature->SetStyleString( osStyle );
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                                  psEMP->vertices[i].z );
            }

            poPolygon->addRingDirectly( poLine );

            poFeature->SetGeometryDirectly( poPolygon );

            ConsiderBrush( psElement, szPen, poFeature );
        }
        else if( psElement->type == DGNT_CURVE )
        {
            DGNElemMultiPoint *psEMP = (DGNElemMultiPoint *) psElement;
            OGRLineString       *poLine = new OGRLineString();
            DGNPoint            *pasPoints;
            int                 nPoints;

            nPoints = 5 * psEMP->num_vertices;
            pasPoints = (DGNPoint *) CPLMalloc(sizeof(DGNPoint) * nPoints);
            
            DGNStrokeCurve( hDGN, psEMP, nPoints, pasPoints );

            poLine->setNumPoints( nPoints );
            for( int i = 0; i < nPoints; i++ )
            {
                poLine->setPoint( i, 
                                  pasPoints[i].x,
                                  pasPoints[i].y,
                                  pasPoints[i].z );
            }

            poFeature->SetGeometryDirectly( poLine );
            CPLFree( pasPoints );

            poFeature->SetStyleString( szPen );
        }
        else
        {
            OGRLineString       *poLine = new OGRLineString();
            DGNElemMultiPoint *psEMP = (DGNElemMultiPoint *) psElement;
            
            if( psEMP->num_vertices > 0 )
            {
                poLine->setNumPoints( psEMP->num_vertices );
                for( int i = 0; i < psEMP->num_vertices; i++ )
                {
                    poLine->setPoint( i, 
                                      psEMP->vertices[i].x,
                                      psEMP->vertices[i].y,
                                      psEMP->vertices[i].z );
                }
                
                poFeature->SetGeometryDirectly( poLine );
            }

            poFeature->SetStyleString( szPen );
        }
        break;

      case DGNST_ARC:
      {
          OGRLineString *poLine = new OGRLineString();
          DGNElemArc    *psArc = (DGNElemArc *) psElement;
          DGNPoint      asPoints[90];
          int           nPoints;

          nPoints = (int) (MAX(1,ABS(psArc->sweepang) / 5) + 1);

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());
//.........这里部分代码省略.........