int msContourLayerClose(layerObj *layer)
{
contourLayerInfo *clinfo = (contourLayerInfo *) layer->layerinfo;
if (layer->debug)
msDebug("Entering msContourLayerClose().\n");
if (clinfo) {
if (clinfo->hOGRDS)
msConnPoolRelease(&clinfo->ogrLayer, clinfo->hOGRDS);
msLayerClose(&clinfo->ogrLayer);
if (clinfo->hDS) {
GDALClose(clinfo->hDS);
clinfo->hDS = NULL;
free(clinfo->buffer);
}
if (clinfo->hOrigDS) {
GDALClose(clinfo->hOrigDS);
clinfo->hOrigDS = NULL;
}
msContourLayerInfoFree(layer);
}
return MS_SUCCESS;
}
int msContourLayerWhichShapes(layerObj *layer, rectObj rect, int isQuery)
{
rectObj newRect;
contourLayerInfo *clinfo = (contourLayerInfo *) layer->layerinfo;
if (layer->debug)
msDebug("Entering msContourLayerWhichShapes().\n");
if (clinfo == NULL) {
msSetError(MS_MISCERR, "Assertion failed: Contour layer not opened!!!",
"msContourLayerWhichShapes()");
return MS_FAILURE;
}
newRect = rect;
#ifdef USE_PROJ
/* if necessary, project the searchrect to source coords */
if (msProjectionsDiffer( &(layer->map->projection), &(layer->projection))) {
if (msProjectRect(&layer->projection, &layer->map->projection, &newRect)
!= MS_SUCCESS ) {
msDebug("msContourLayerWhichShapes(%s): unable to reproject map request rectangle into layer projection, canceling.\n", layer->name);
return MS_FAILURE;
}
}
#endif
/* regenerate the raster io */
msConnPoolRelease(&clinfo->ogrLayer, clinfo->hOGRDS);
msLayerClose(&clinfo->ogrLayer);
/* Open the raster source */
if (msContourLayerReadRaster(layer, newRect) != MS_SUCCESS)
return MS_FAILURE;
/* Generate Contour Dataset */
if (msContourLayerGenerateContour(layer) != MS_SUCCESS)
return MS_FAILURE;
GDALClose(clinfo->hDS);
clinfo->hDS = NULL;
free(clinfo->buffer);
/* Open our virtual ogr layer */
if (msLayerOpen(&clinfo->ogrLayer) != MS_SUCCESS)
return MS_FAILURE;
clinfo->ogrLayer.numitems = layer->numitems;
clinfo->ogrLayer.items = CSLDuplicate(layer->items);
return msLayerWhichShapes(&clinfo->ogrLayer, rect, isQuery);
}
void layerObj_close(layerObj *self) {
msLayerClose(self);
}
/**
* Generic function to render chart layers.
*/
int msDrawChartLayer(mapObj *map, layerObj *layer, imageObj *image)
{
rectObj searchrect;
const char *chartTypeProcessingKey=msLayerGetProcessingKey( layer,"CHART_TYPE" );
int chartType=MS_CHART_TYPE_PIE;
int status = MS_FAILURE;
if (image && map && layer)
{
if( !(MS_RENDERER_PLUGIN(image->format) )) {
msSetError(MS_MISCERR, "chart drawing currently only supports GD and AGG renderers", "msDrawChartLayer()");
return MS_FAILURE;
}
if( layer->numclasses < 2 ) {
msSetError(MS_MISCERR,"chart drawing requires at least 2 classes in layer", "msDrawChartLayer()");
return MS_FAILURE;
}
if(chartTypeProcessingKey!=NULL) {
if( strcasecmp(chartTypeProcessingKey,"PIE") == 0 ) {
chartType=MS_CHART_TYPE_PIE;
}
else if( strcasecmp(chartTypeProcessingKey,"BAR") == 0 ) {
chartType=MS_CHART_TYPE_BAR;
}
else if( strcasecmp(chartTypeProcessingKey,"VBAR") == 0 ) {
chartType=MS_CHART_TYPE_VBAR;
}
else {
msSetError(MS_MISCERR,"unknown chart type for processing key \"CHART_TYPE\", must be one of \"PIE\" or \"BAR\"", "msDrawChartLayer()");
return MS_FAILURE;
}
}
if(chartType == MS_CHART_TYPE_PIE) {
pieLayerProcessDynamicDiameter(layer);
}
/* open this layer */
status = msLayerOpen(layer);
if(status != MS_SUCCESS) return MS_FAILURE;
status = msLayerWhichItems(layer, MS_FALSE, NULL);
if(status != MS_SUCCESS) {
msLayerClose(layer);
return MS_FAILURE;
}
/* identify target shapes */
if(layer->transform == MS_TRUE)
searchrect = map->extent;
else {
searchrect.minx = searchrect.miny = 0;
searchrect.maxx = map->width-1;
searchrect.maxy = map->height-1;
}
#ifdef USE_PROJ
if((map->projection.numargs > 0) && (layer->projection.numargs > 0))
msProjectRect(&map->projection, &layer->projection, &searchrect); /* project the searchrect to source coords */
#endif
status = msLayerWhichShapes(layer, searchrect, MS_FALSE);
if(status == MS_DONE) { /* no overlap */
msLayerClose(layer);
return MS_SUCCESS;
} else if(status != MS_SUCCESS) {
msLayerClose(layer);
return MS_FAILURE;
}
switch(chartType) {
case MS_CHART_TYPE_PIE:
status = msDrawPieChartLayer(map, layer, image);
break;
case MS_CHART_TYPE_BAR:
status = msDrawBarChartLayer(map, layer, image);
break;
case MS_CHART_TYPE_VBAR:
status = msDrawVBarChartLayer(map, layer, image);
break;
default:
return MS_FAILURE;/*shouldn't be here anyways*/
}
msLayerClose(layer);
}
return status;
}
