mitab_feature.cpp

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/**********************************************************************
 * $Id: mitab_feature.cpp,v 1.54 2004/12/01 18:25:03 dmorissette Exp $
 *
 * Name:     mitab_feature.cpp
 * Project:  MapInfo TAB Read/Write library
 * Language: C++
 * Purpose:  Implementation of the feature classes specific to MapInfo files.
 * Author:   Daniel Morissette, [e-mail]
 *
 **********************************************************************
 * Copyright (c) 1999-2002, Daniel Morissette
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 **********************************************************************
 *
 * $Log: mitab_feature.cpp,v $
 * Revision 1.54  2004/12/01 18:25:03  dmorissette
 * Fixed potential memory leaks in error conditions (bug 881)
 *
 * Revision 1.53  2004/10/19 14:21:11  jlacroix
 * Support pen width bigger than 7 with GetStyleString. (Bug 683)
 *
 * Revision 1.52  2004/10/11 20:18:27  dmorissette
 * Do not output a BG color in style string for transparent brushes (bug 693)
 *
 * Revision 1.51  2004/06/30 20:29:03  dmorissette
 * Fixed refs to old address [e-mail]
 *
 * Revision 1.50  2003/12/19 08:30:10  fwarmerdam
 * write 3d geometries to tab in 2D
 *
 * Revision 1.49  2003/03/28 14:01:14  warmerda
 * use TRUE/FALSE in place of true/false
 *
 * Revision 1.48  2002/08/27 17:17:33  warmerda
 * handle errors better, auto-add FID column if there aren't any columns
 *
 * Revision 1.47  2002/06/17 15:00:30  julien
 * Add IsInteriorRing() function in TABRegion to validate if a ring is internal
 *
 * Revision 1.46  2002/03/26 03:17:13  daniel
 * Added Get/SetCenter() to MultiPoint
 *
 * Revision 1.45  2002/03/26 01:48:40  daniel
 * Added Multipoint object type (V650)
 *
 * Revision 1.44  2002/01/23 20:29:56  daniel
 * Fixed warning produced by CPLAssert() in non-DEBUG mode.
 *
 * Revision 1.43  2001/12/05 22:38:59  daniel
 * Fixed problems writing TAB_GEOM_LINE (bug 610, 633).
 *
 * Revision 1.42  2001/11/23 22:50:17  daniel
 * Fixed geometry type assertion in TABPolyline::WriteGeomToMAPFile (bug605)
 *
 * Revision 1.41  2001/11/17 21:54:06  daniel
 * Made several changes in order to support writing objects in 16 bits 
 * coordinate format.  New TABMAPObjHdr-derived classes are used to hold 
 * object info in mem until block is full.
 *
 * Revision 1.40  2001/09/17 21:33:44  daniel
 * TABText: do not produce an error when reading 0-length text strings.
 *
 * Revision 1.39  2001/09/05 13:33:33  daniel
 * TABPolyline::ValidateMapInfoType(): return TAB_GEOM_NONE if numpoints < 2
 *
 * Revision 1.38  2001/07/03 03:14:52  daniel
 * GetLabelStyleString(): take line spacing and num. of lines into account
 * when calculating text height.
 *
 * Revision 1.37  2001/06/25 01:04:21  daniel
 * StyleString fixes: include font name in text style string, and placed
 * brush before pen in region style strings.
 *
 * Revision 1.36  2001/05/01 18:34:12  daniel
 * TABRegion: use outside/inside ring relationship to build geometry if
 * the information is available in the source file.
 *
 * Revision 1.35  2001/02/28 07:15:08  daniel
 * Added support for text label line end point
 *
 * Revision 1.34  2001/01/22 16:03:58  warmerda
 * expanded tabs
 *
 * Revision 1.33  2000/11/23 21:11:07  daniel
 * OOpps... VC++ didn't like the way TABPenDef, etc. were initialized
 *
 * Revision 1.32  2000/11/23 20:47:45  daniel
 * Use MI defaults for Pen, Brush, Font, Symbol instead of all zeros
 *
 * Revision 1.31  2000/10/18 03:23:37  warmerda
 * ensure TABText::m_dWidth is initialized in constructor
 *
 * Revision 1.30  2000/10/03 19:29:51  daniel
 * Include OGR StyleString stuff (implemented by Stephane)
 *
 * Revision 1.29  2000/09/19 17:23:52  daniel
 * Maintain and/or compute valid region and polyline center/label point
 *
 * Revision 1.28  2000/09/07 23:32:13  daniel
 * Added RecordDeletedFlag to TABFeature with get/set methods
 *
 * Revision 1.27  2000/07/10 14:56:25  daniel
 * Handle m_nOriginQuadrant==0 as quadrant 3 (reverse x and y axis)
 *
 * Revision 1.26  2000/04/21 12:39:05  daniel
 * Added TABPolyline::GetNumParts()/GetPartRef()
 *
 * Revision 1.25  2000/02/28 16:44:10  daniel
 * Added support for indexed, unique, and for new V450 object types
 *
 * ...
 *
 * Revision 1.1  1999/07/12 04:18:24  daniel
 * Initial checkin
 *
 **********************************************************************/

#include "mitab.h"
#include "mitab_utils.h"
#include "mitab_geometry.h"

/*=====================================================================
 *                      class TABFeature
 *====================================================================*/


/**********************************************************************
 *                   TABFeature::TABFeature()
 *
 * Constructor.
 **********************************************************************/
TABFeature::TABFeature(OGRFeatureDefn *poDefnIn):
               OGRFeature(poDefnIn)
{
    m_nMapInfoType = TAB_GEOM_NONE;
    m_bDeletedFlag = FALSE;

    SetMBR(0.0, 0.0, 0.0, 0.0);
}

/**********************************************************************
 *                   TABFeature::~TABFeature()
 *
 * Destructor.
 **********************************************************************/
TABFeature::~TABFeature()
{
}


/**********************************************************************
 *                     TABFeature::CopyTABFeatureBase()
 *
 * Used by CloneTABFeature() to copy the basic (fields, geometry, etc.)
 * TABFeature members.
 *
 * The newly created feature is owned by the caller, and will have it's own
 * reference to the OGRFeatureDefn.
 *
 * It is possible to create the clone with a different OGRFeatureDefn,
 * in this case, the fields won't be copied of course.
 *
 **********************************************************************/
void TABFeature::CopyTABFeatureBase(TABFeature *poDestFeature)
{
    /*-----------------------------------------------------------------
     * Copy fields only if OGRFeatureDefn is the same
     *----------------------------------------------------------------*/
    OGRFeatureDefn *poThisDefnRef = GetDefnRef();

    if (poThisDefnRef == poDestFeature->GetDefnRef())
    {
        for( int i = 0; i < poThisDefnRef->GetFieldCount(); i++ )
        {
            poDestFeature->SetField( i, GetRawFieldRef( i ) );
        }
    }

    /*-----------------------------------------------------------------
     * Copy the geometry
     *----------------------------------------------------------------*/
    poDestFeature->SetGeometry( GetGeometryRef() );

    double dXMin, dYMin, dXMax, dYMax;
    GetMBR(dXMin, dYMin, dXMax, dYMax);
    poDestFeature->SetMBR(dXMin, dYMin, dXMax, dYMax);

    // m_nMapInfoType is not carried but it is not required anyways.
    // it will default to TAB_GEOM_NONE
}


/**********************************************************************
 *                     TABFeature::CloneTABFeature()
 *
 * Duplicate feature, including stuff specific to each TABFeature type.
 *
 * The newly created feature is owned by the caller, and will have it's own
 * reference to the OGRFeatureDefn.
 *
 * It is possible to create the clone with a different OGRFeatureDefn,
 * in this case, the fields won't be copied of course.
 *
 * This method calls the generic TABFeature::CopyTABFeatureBase() and 
 * then copies any members specific to its own type.
 **********************************************************************/
TABFeature *TABFeature::CloneTABFeature(OGRFeatureDefn *poNewDefn/*=NULL*/)
{
    /*-----------------------------------------------------------------
     * Alloc new feature and copy the base stuff
     *----------------------------------------------------------------*/
    TABFeature *poNew = new TABFeature(poNewDefn ? poNewDefn : GetDefnRef());

    CopyTABFeatureBase(poNew);

    /*-----------------------------------------------------------------
     * And members specific to this class
     *----------------------------------------------------------------*/
    // Nothing to do for this class

    return poNew;
}

/**********************************************************************
 *                   TABFeature::SetMBR()
 *
 * Set the values for the MBR corners for this feature.
 **********************************************************************/
void TABFeature::SetMBR(double dXMin, double dYMin, 
                        double dXMax, double dYMax)
{
    m_dXMin = MIN(dXMin, dXMax);
    m_dYMin = MIN(dYMin, dYMax);
    m_dXMax = MAX(dXMin, dXMax);
    m_dYMax = MAX(dYMin, dYMax);
}

/**********************************************************************
 *                   TABFeature::GetMBR()
 *
 * Return the values for the MBR corners for this feature.
 **********************************************************************/
void TABFeature::GetMBR(double &dXMin, double &dYMin, 
                        double &dXMax, double &dYMax)
{
    dXMin = m_dXMin;
    dYMin = m_dYMin;
    dXMax = m_dXMax;
    dYMax = m_dYMax;
}

/**********************************************************************
 *                   TABFeature::ReadRecordFromDATFile()
 *
 * Fill the fields part of the feature from the contents of the 
 * table record pointed to by poDATFile.
 *
 * It is assumed that poDATFile currently points to the beginning of
 * the table record and that this feature's OGRFeatureDefn has been 
 * properly initialized for this table.
 **********************************************************************/
int TABFeature::ReadRecordFromDATFile(TABDATFile *poDATFile)
{
    int         iField, numFields, nValue;
    double      dValue;
    const char *pszValue;

    CPLAssert(poDATFile);

    numFields = poDATFile->GetNumFields();

    for(iField=0; iField<numFields; iField++)
    {
        switch(poDATFile->GetFieldType(iField))
        {
          case TABFChar:
            pszValue = poDATFile->ReadCharField(poDATFile->
                                                GetFieldWidth(iField));
            SetField(iField, pszValue);
            break;
          case TABFDecimal:
            dValue = poDATFile->ReadDecimalField(poDATFile->
                                                 GetFieldWidth(iField));
            SetField(iField, dValue);
            break;
          case TABFInteger:
            nValue = poDATFile->ReadIntegerField(poDATFile->
                                                 GetFieldWidth(iField));
            SetField(iField, nValue);
            break;
          case TABFSmallInt:
            nValue = poDATFile->ReadSmallIntField(poDATFile->
                                                 GetFieldWidth(iField));
            SetField(iField, nValue);
            break;
          case TABFFloat:
            dValue = poDATFile->ReadFloatField(poDATFile->
                                                 GetFieldWidth(iField));
            SetField(iField, dValue);
            break;
          case TABFLogical:
            pszValue = poDATFile->ReadLogicalField(poDATFile->
                                                 GetFieldWidth(iField));
            SetField(iField, pszValue);
            break;
          case TABFDate:
            pszValue = poDATFile->ReadDateField(poDATFile->
                                                 GetFieldWidth(iField));
            SetField(iField, pszValue);
            break;
          default:
            // Other type???  Impossible!
            CPLError(CE_Failure, CPLE_AssertionFailed,
                     "Unsupported field type!");
        }

    }

    return 0;
}

/**********************************************************************
 *                   TABFeature::WriteRecordToDATFile()
 *
 * Write the attribute part of the feature to the .DAT file.
 *
 * It is assumed that poDATFile currently points to the beginning of
 * the table record and that this feature's OGRFeatureDefn has been 
 * properly initialized for this table.
 *
 * Returns 0 on success, -1 on error.
 **********************************************************************/
int TABFeature::WriteRecordToDATFile(TABDATFile *poDATFile,
                                     TABINDFile *poINDFile, int *panIndexNo)
{
    int         iField, numFields, nStatus=0;