Method processLayer

mapkmlrenderer.cpp:219–279

/ processLayer */ / Set parameters that make sense to a kml output. */ /

/*      Set parameters that make sense to a kml output.                 */
/************************************************************************/
void KmlRenderer::processLayer(layerObj *layer, outputFormatObj *format)
{
    int i;
    const char *asRaster = NULL;
    int nMaxFeatures = -1;
    const char *pszTmp;
    char szTmp[10]; 

    if (!layer)
      return;

    /*turn of labelcache*/
    layer->labelcache = MS_OFF;
    
    /*if there are labels we want the coordinates to 
      be the center of the element.*/
    for(i=0; i<layer->numclasses; i++)
      layer->_class[i]->label.position = MS_XY;
   
    /*we do not want to draw multiple styles.
      the new rendering architecture does not allow
      to know if we are dealing with a multi-style.
      So here we remove all styles beside the first one*/
    
    for(i=0; i<layer->numclasses; i++)
    {
        while (layer->_class[i]->numstyles > 1)
          msDeleteStyle(layer->_class[i], layer->_class[i]->numstyles-1);
    }

    /*if layer has a metadata KML_OUTPUTASRASTER set to true, add a processing directive
      to use an agg driver*/
    asRaster = msLookupHashTable(&layer->metadata, "kml_outputasraster");
    if (!asRaster)
      asRaster = msLookupHashTable(&(layer->map->web.metadata), "kml_outputasraster");
    if (asRaster && (strcasecmp(asRaster, "true") == 0 ||
                     strcasecmp(asRaster, "yes") == 0))
      msLayerAddProcessing(layer, "RENDERER=png24");
      
    
    /*set a maxfeaturestodraw, if not already set*/
    
    pszTmp = msLookupHashTable(&layer->metadata, "maxfeaturestodraw");
    if (pszTmp)
      nMaxFeatures = atoi(pszTmp);
    else
    {
        pszTmp = msLookupHashTable(&layer->map->web.metadata, "maxfeaturestodraw");
        if (pszTmp)
          nMaxFeatures = atoi(pszTmp);
    }
    if (nMaxFeatures < 0 && format)
      nMaxFeatures = atoi(msGetOutputFormatOption( format, "maxfeaturestodraw", "-1"));
    
    if (nMaxFeatures < 0 && format)
    {
        snprintf(szTmp, sizeof(szTmp), "%d", KML_MAXFEATURES_TODRAW);
        msSetOutputFormatOption( format, "maxfeaturestodraw", szTmp);