/
mapuvraster.c
1077 lines (912 loc) · 38.6 KB
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mapuvraster.c
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/**********************************************************************
* $Id: mapuv.c 12629 2011-10-06 18:06:34Z aboudreault $
*
* Project: MapServer
* Purpose: UV Layer
* Author: Alan Boudreault (aboudreault@mapgears.com)
*
**********************************************************************
* Copyright (c) 2011, Alan Boudreault, MapGears
*
* 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 of this Software or works derived from this 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.
**********************************************************************/
#include "mapserver.h"
#include <assert.h>
#include <math.h>
#include "mapows.h"
#include "mapresample.h"
#include "mapthread.h"
#define MSUVRASTER_NUMITEMS 6
#define MSUVRASTER_ANGLE "uv_angle"
#define MSUVRASTER_ANGLEINDEX -100
#define MSUVRASTER_MINUS_ANGLE "uv_minus_angle"
#define MSUVRASTER_MINUSANGLEINDEX -101
#define MSUVRASTER_LENGTH "uv_length"
#define MSUVRASTER_LENGTHINDEX -102
#define MSUVRASTER_LENGTH_2 "uv_length_2"
#define MSUVRASTER_LENGTH2INDEX -103
#define MSUVRASTER_U "u"
#define MSUVRASTER_UINDEX -104
#define MSUVRASTER_V "v"
#define MSUVRASTER_VINDEX -105
#define RQM_UNKNOWN 0
#define RQM_ENTRY_PER_PIXEL 1
#define RQM_HIST_ON_CLASS 2
#define RQM_HIST_ON_VALUE 3
typedef struct {
/* query cache results */
int query_results;
/* int query_alloc_max;
int query_request_max;
int query_result_hard_max;
int raster_query_mode; */
int band_count;
int refcount;
/* query bound in force
shapeObj *searchshape;*/
/* Only nearest result to this point.
int range_mode; MS_QUERY_SINGLE, MS_QUERY_MULTIPLE or -1 (skip test)
double range_dist;
pointObj target_point;*/
/* double shape_tolerance; */
float **u; /* u values */
float **v; /* v values */
int width;
int height;
rectObj extent;
int next_shape;
int x, y; /* used internally in msUVRasterLayerNextShape() */
mapObj* mapToUseForWhichShapes; /* set if the map->extent and map->projection are valid in msUVRASTERLayerWhichShapes() */
} uvRasterLayerInfo;
void msUVRASTERLayerUseMapExtentAndProjectionForNextWhichShapes(layerObj* layer,
mapObj* map)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
uvlinfo->mapToUseForWhichShapes = map;
}
static int msUVRASTERLayerInitItemInfo(layerObj *layer)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
int i;
int *itemindexes;
int failed=0;
if (layer->numitems == 0)
return MS_SUCCESS;
if( uvlinfo == NULL ) {
msSetError(MS_MISCERR, "Assertion failed: GDAL layer not opened!!!",
"msUVRASTERLayerInitItemInfo()");
return(MS_FAILURE);
}
if (layer->iteminfo)
free(layer->iteminfo);
if((layer->iteminfo = (int *)malloc(sizeof(int)*layer->numitems))== NULL) {
msSetError(MS_MEMERR, NULL, "msUVRASTERLayerInitItemInfo()");
return(MS_FAILURE);
}
itemindexes = (int*)layer->iteminfo;
for(i=0; i<layer->numitems; i++) {
/* Special case for handling text string and angle coming from */
/* OGR style strings. We use special attribute snames. */
if (EQUAL(layer->items[i], MSUVRASTER_ANGLE))
itemindexes[i] = MSUVRASTER_ANGLEINDEX;
else if (EQUAL(layer->items[i], MSUVRASTER_MINUS_ANGLE))
itemindexes[i] = MSUVRASTER_MINUSANGLEINDEX;
else if (EQUAL(layer->items[i], MSUVRASTER_LENGTH))
itemindexes[i] = MSUVRASTER_LENGTHINDEX;
else if (EQUAL(layer->items[i], MSUVRASTER_LENGTH_2))
itemindexes[i] = MSUVRASTER_LENGTH2INDEX;
else if (EQUAL(layer->items[i], MSUVRASTER_U))
itemindexes[i] = MSUVRASTER_UINDEX;
else if (EQUAL(layer->items[i], MSUVRASTER_V))
itemindexes[i] = MSUVRASTER_VINDEX;
else {
itemindexes[i] = -1;
msSetError(MS_OGRERR,
"Invalid Field name: %s",
"msUVRASTERLayerInitItemInfo()",
layer->items[i]);
failed=1;
}
}
return failed ? (MS_FAILURE) : (MS_SUCCESS);
}
void msUVRASTERLayerFreeItemInfo(layerObj *layer)
{
if (layer->iteminfo)
free(layer->iteminfo);
layer->iteminfo = NULL;
}
static void msUVRasterLayerInfoInitialize(layerObj *layer)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
if( uvlinfo != NULL )
return;
uvlinfo = (uvRasterLayerInfo *) msSmallCalloc(1,sizeof(uvRasterLayerInfo));
layer->layerinfo = uvlinfo;
uvlinfo->band_count = -1;
/* uvlinfo->raster_query_mode = RQM_ENTRY_PER_PIXEL; */
/* uvlinfo->range_mode = -1; /\* inactive *\/ */
/* uvlinfo->refcount = 0; */
/* uvlinfo->shape_tolerance = 0.0; */
uvlinfo->u = NULL;
uvlinfo->v = NULL;
uvlinfo->width = 0;
uvlinfo->height = 0;
/* Set attribute type to Real, unless the user has explicitly set */
/* something else. */
{
const char* const items[] = {
MSUVRASTER_ANGLE,
MSUVRASTER_MINUS_ANGLE,
MSUVRASTER_LENGTH,
MSUVRASTER_LENGTH_2,
MSUVRASTER_U,
MSUVRASTER_V,
};
size_t i;
for( i = 0; i < sizeof(items)/sizeof(items[0]); ++i ) {
char szTmp[100];
snprintf(szTmp, sizeof(szTmp), "%s_type", items[i]);
if (msOWSLookupMetadata(&(layer->metadata), "OFG", szTmp) == NULL) {
snprintf(szTmp, sizeof(szTmp), "gml_%s_type", items[i]);
msInsertHashTable(&(layer->metadata), szTmp, "Real");
}
}
}
/* uvlinfo->query_result_hard_max = 1000000; */
/* if( CSLFetchNameValue( layer->processing, "RASTER_QUERY_MAX_RESULT" ) */
/* != NULL ) */
/* { */
/* uvlinfo->query_result_hard_max = */
/* atoi(CSLFetchNameValue( layer->processing, "RASTER_QUERY_MAX_RESULT" )); */
/* } */
}
static void msUVRasterLayerInfoFree( layerObj *layer )
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
int i;
if( uvlinfo == NULL )
return;
if (uvlinfo->u) {
for (i=0; i<uvlinfo->width; ++i) {
free(uvlinfo->u[i]);
}
free(uvlinfo->u);
}
if (uvlinfo->v) {
for (i=0; i<uvlinfo->width; ++i) {
free(uvlinfo->v[i]);
}
free(uvlinfo->v);
}
free( uvlinfo );
layer->layerinfo = NULL;
}
int msUVRASTERLayerOpen(layerObj *layer)
{
/* If we don't have info, initialize an empty one now */
if( layer->layerinfo == NULL )
msUVRasterLayerInfoInitialize( layer );
if( layer->layerinfo == NULL )
return MS_FAILURE;
uvRasterLayerInfo* uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
uvlinfo->refcount = uvlinfo->refcount + 1;
return MS_SUCCESS;
}
int msUVRASTERLayerIsOpen(layerObj *layer)
{
if (layer->layerinfo)
return MS_TRUE;
return MS_FALSE;
}
int msUVRASTERLayerClose(layerObj *layer)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
if( uvlinfo != NULL ) {
uvlinfo->refcount--;
if( uvlinfo->refcount < 1 )
msUVRasterLayerInfoFree( layer );
}
return MS_SUCCESS;
}
int msUVRASTERLayerGetItems(layerObj *layer)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
if( uvlinfo == NULL )
return MS_FAILURE;
layer->numitems = 0;
layer->items = (char **) msSmallCalloc(sizeof(char *),10);;
layer->items[layer->numitems++] = msStrdup(MSUVRASTER_ANGLE);
layer->items[layer->numitems++] = msStrdup(MSUVRASTER_MINUS_ANGLE);
layer->items[layer->numitems++] = msStrdup(MSUVRASTER_LENGTH);
layer->items[layer->numitems++] = msStrdup(MSUVRASTER_LENGTH_2);
layer->items[layer->numitems++] = msStrdup(MSUVRASTER_U);
layer->items[layer->numitems++] = msStrdup(MSUVRASTER_V);
layer->items[layer->numitems] = NULL;
return msUVRASTERLayerInitItemInfo(layer);
}
/**********************************************************************
* msUVRASTERGetValues()
*
* Special attribute names are used to return some UV params: uv_angle,
* uv_length, u and v.
**********************************************************************/
static char **msUVRASTERGetValues(layerObj *layer, float *u, float *v)
{
char **values;
int i = 0;
char tmp[100];
float size_scale;
int *itemindexes = (int*)layer->iteminfo;
if(layer->numitems == 0)
return(NULL);
if(!layer->iteminfo) { /* Should not happen... but just in case! */
if (msUVRASTERLayerInitItemInfo(layer) != MS_SUCCESS)
return NULL;
itemindexes = (int*)layer->iteminfo; /* reassign after malloc */
}
if((values = (char **)malloc(sizeof(char *)*layer->numitems)) == NULL) {
msSetError(MS_MEMERR, NULL, "msUVRASTERGetValues()");
return(NULL);
}
/* -------------------------------------------------------------------- */
/* Determine desired size_scale. Default to 1 if not otherwise set */
/* -------------------------------------------------------------------- */
size_scale = 1;
if( CSLFetchNameValue( layer->processing, "UV_SIZE_SCALE" ) != NULL ) {
size_scale =
atof(CSLFetchNameValue( layer->processing, "UV_SIZE_SCALE" ));
}
for(i=0; i<layer->numitems; i++) {
if (itemindexes[i] == MSUVRASTER_ANGLEINDEX) {
snprintf(tmp, 100, "%f", (atan2((double)*v, (double)*u) * 180 / MS_PI));
values[i] = msStrdup(tmp);
} else if (itemindexes[i] == MSUVRASTER_MINUSANGLEINDEX) {
double minus_angle;
minus_angle = (atan2((double)*v, (double)*u) * 180 / MS_PI)+180;
if (minus_angle >= 360)
minus_angle -= 360;
snprintf(tmp, 100, "%f", minus_angle);
values[i] = msStrdup(tmp);
} else if ( (itemindexes[i] == MSUVRASTER_LENGTHINDEX) ||
(itemindexes[i] == MSUVRASTER_LENGTH2INDEX) ) {
float length = sqrt((*u**u)+(*v**v))*size_scale;
if (itemindexes[i] == MSUVRASTER_LENGTHINDEX)
snprintf(tmp, 100, "%f", length);
else
snprintf(tmp, 100, "%f", length/2);
values[i] = msStrdup(tmp);
} else if (itemindexes[i] == MSUVRASTER_UINDEX) {
snprintf(tmp, 100, "%f",*u);
values[i] = msStrdup(tmp);
} else if (itemindexes[i] == MSUVRASTER_VINDEX) {
snprintf(tmp, 100, "%f",*v);
values[i] = msStrdup(tmp);
} else {
values[i] = NULL;
}
}
return values;
}
rectObj msUVRASTERGetSearchRect( layerObj* layer, mapObj* map )
{
rectObj searchrect = map->extent;
int bDone = MS_FALSE;
/* For UVRaster, it is important that the searchrect is not too large */
/* to avoid insufficient intermediate raster resolution, which could */
/* happen if we use the default code path, given potential reprojection */
/* issues when using a map extent that is not in the validity area of */
/* the layer projection. */
if( !layer->projection.gt.need_geotransform &&
!(msProjIsGeographicCRS(&(map->projection)) &&
msProjIsGeographicCRS(&(layer->projection))) ) {
rectObj layer_ori_extent;
if( msLayerGetExtent(layer, &layer_ori_extent) == MS_SUCCESS ) {
projectionObj map_proj;
double map_extent_minx = map->extent.minx;
double map_extent_miny = map->extent.miny;
double map_extent_maxx = map->extent.maxx;
double map_extent_maxy = map->extent.maxy;
rectObj layer_extent = layer_ori_extent;
/* Create a variant of map->projection without geotransform for */
/* conveniency */
msInitProjection(&map_proj);
msCopyProjection(&map_proj, &map->projection);
map_proj.gt.need_geotransform = MS_FALSE;
if( map->projection.gt.need_geotransform ) {
map_extent_minx = map->projection.gt.geotransform[0]
+ map->projection.gt.geotransform[1] * map->extent.minx
+ map->projection.gt.geotransform[2] * map->extent.miny;
map_extent_miny = map->projection.gt.geotransform[3]
+ map->projection.gt.geotransform[4] * map->extent.minx
+ map->projection.gt.geotransform[5] * map->extent.miny;
map_extent_maxx = map->projection.gt.geotransform[0]
+ map->projection.gt.geotransform[1] * map->extent.maxx
+ map->projection.gt.geotransform[2] * map->extent.maxy;
map_extent_maxy = map->projection.gt.geotransform[3]
+ map->projection.gt.geotransform[4] * map->extent.maxx
+ map->projection.gt.geotransform[5] * map->extent.maxy;
}
/* Reproject layer extent to map projection */
msProjectRect(&layer->projection, &map_proj, &layer_extent);
if( layer_extent.minx <= map_extent_minx &&
layer_extent.miny <= map_extent_miny &&
layer_extent.maxx >= map_extent_maxx &&
layer_extent.maxy >= map_extent_maxy ) {
/* do nothing special if area to map is inside layer extent */
}
else {
if( layer_extent.minx >= map_extent_minx &&
layer_extent.maxx <= map_extent_maxx &&
layer_extent.miny >= map_extent_miny &&
layer_extent.maxy <= map_extent_maxy ) {
/* if the area to map is larger than the layer extent, then */
/* use full layer extent and add some margin to reflect the */
/* proportion of the useful area over the requested bbox */
double extra_x =
(map_extent_maxx - map_extent_minx) /
(layer_extent.maxx - layer_extent.minx) *
(layer_ori_extent.maxx - layer_ori_extent.minx);
double extra_y =
(map_extent_maxy - map_extent_miny) /
(layer_extent.maxy - layer_extent.miny) *
(layer_ori_extent.maxy - layer_ori_extent.miny);
searchrect.minx = layer_ori_extent.minx - extra_x / 2;
searchrect.maxx = layer_ori_extent.maxx + extra_x / 2;
searchrect.miny = layer_ori_extent.miny - extra_y / 2;
searchrect.maxy = layer_ori_extent.maxy + extra_y / 2;
}
else
{
/* otherwise clip the map extent with the reprojected layer */
/* extent */
searchrect.minx = MS_MAX( map_extent_minx, layer_extent.minx );
searchrect.maxx = MS_MIN( map_extent_maxx, layer_extent.maxx );
searchrect.miny = MS_MAX( map_extent_miny, layer_extent.miny );
searchrect.maxy = MS_MIN( map_extent_maxy, layer_extent.maxy );
/* and reproject into the layer projection */
msProjectRect(&map_proj, &layer->projection, &searchrect);
}
bDone = MS_TRUE;
}
msFreeProjection(&map_proj);
}
}
if( !bDone )
msProjectRect(&map->projection, &layer->projection, &searchrect); /* project the searchrect to source coords */
return searchrect;
}
int msUVRASTERLayerWhichShapes(layerObj *layer, rectObj rect, int isQuery)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
imageObj *image_tmp;
outputFormatObj *outputformat = NULL;
mapObj *map_tmp;
double map_cellsize;
unsigned int spacing;
int width, height, u_src_off, v_src_off, i, x, y;
char **alteredProcessing = NULL, *saved_layer_mask;
char **savedProcessing = NULL;
int bHasLonWrap = MS_FALSE;
double dfLonWrap = 0.0;
rectObj oldLayerExtent = {0};
char* oldLayerData = NULL;
projectionObj oldLayerProjection={0};
int ret;
if (layer->debug)
msDebug("Entering msUVRASTERLayerWhichShapes().\n");
if( uvlinfo == NULL )
return MS_FAILURE;
if( CSLFetchNameValue( layer->processing, "BANDS" ) == NULL ) {
msSetError( MS_MISCERR, "BANDS processing option is required for UV layer. You have to specified 2 bands.",
"msUVRASTERLayerWhichShapes()" );
return MS_FAILURE;
}
/*
** Allocate mapObj structure
*/
map_tmp = (mapObj *)msSmallCalloc(sizeof(mapObj),1);
if(initMap(map_tmp) == -1) { /* initialize this map */
msFree(map_tmp);
return(MS_FAILURE);
}
/* -------------------------------------------------------------------- */
/* Determine desired spacing. Default to 32 if not otherwise set */
/* -------------------------------------------------------------------- */
spacing = 32;
if( CSLFetchNameValue( layer->processing, "UV_SPACING" ) != NULL ) {
spacing =
atoi(CSLFetchNameValue( layer->processing, "UV_SPACING" ));
if( spacing == 0 )
spacing = 32;
}
width = (int)(layer->map->width/spacing);
height = (int)(layer->map->height/spacing);
/* Initialize our dummy map */
MS_INIT_COLOR(map_tmp->imagecolor, 255,255,255,255);
map_tmp->resolution = layer->map->resolution;
map_tmp->defresolution = layer->map->defresolution;
outputformat = (outputFormatObj *) msSmallCalloc(1,sizeof(outputFormatObj));
outputformat->bands = uvlinfo->band_count = 2;
outputformat->name = NULL;
outputformat->driver = NULL;
outputformat->refcount = 0;
outputformat->vtable = NULL;
outputformat->device = NULL;
outputformat->renderer = MS_RENDER_WITH_RAWDATA;
outputformat->imagemode = MS_IMAGEMODE_FLOAT32;
msAppendOutputFormat(map_tmp, outputformat);
msCopyHashTable(&map_tmp->configoptions, &layer->map->configoptions);
map_tmp->mappath = msStrdup(layer->map->mappath);
map_tmp->shapepath = msStrdup(layer->map->shapepath);
map_tmp->gt.rotation_angle = 0.0;
/* Custom msCopyProjection() that removes lon_wrap parameter */
{
int i;
map_tmp->projection.numargs = 0;
map_tmp->projection.gt = layer->projection.gt;
map_tmp->projection.automatic = layer->projection.automatic;
for (i = 0; i < layer->projection.numargs; i++) {
if( strncmp(layer->projection.args[i], "lon_wrap=",
strlen("lon_wrap=")) == 0 ) {
bHasLonWrap = MS_TRUE;
dfLonWrap = atof( layer->projection.args[i] + strlen("lon_wrap=") );
}
else {
map_tmp->projection.args[map_tmp->projection.numargs ++] =
msStrdup(layer->projection.args[i]);
}
}
if (map_tmp->projection.numargs != 0) {
msProcessProjection(&(map_tmp->projection));
}
map_tmp->projection.wellknownprojection = layer->projection.wellknownprojection;
}
/* Very special case to improve quality for rasters referenced from lon=0 to 360 */
/* We create a temporary VRT that swiches the 2 hemispheres, and then we */
/* modify the georeferncing to be in the more standard [-180, 180] range */
/* and we adjust the layer->data, extent and projection accordingly */
if( layer->tileindex == NULL &&
uvlinfo->mapToUseForWhichShapes && bHasLonWrap && dfLonWrap == 180.0 )
{
rectObj layerExtent;
msLayerGetExtent(layer, &layerExtent);
if( layerExtent.minx == 0 && layerExtent.maxx == 360 )
{
GDALDatasetH hDS = NULL;
char* decrypted_path;
if( strncmp(layer->data, "<VRTDataset", strlen("<VRTDataset")) == 0 )
{
decrypted_path = msStrdup(layer->data);
}
else
{
char szPath[MS_MAXPATHLEN];
msTryBuildPath3(szPath, layer->map->mappath,
layer->map->shapepath, layer->data);
decrypted_path = msDecryptStringTokens( layer->map, szPath );
}
if( decrypted_path )
{
char** connectionoptions;
GDALAllRegister();
connectionoptions = msGetStringListFromHashTable(&(layer->connectionoptions));
hDS = GDALOpenEx(decrypted_path,
GDAL_OF_RASTER,
NULL,
(const char* const*)connectionoptions,
NULL);
CSLDestroy(connectionoptions);
}
if( hDS != NULL )
{
int iBand;
int nXSize = GDALGetRasterXSize( hDS );
int nYSize = GDALGetRasterYSize( hDS );
int nBands = GDALGetRasterCount( hDS );
int nMaxLen = 100 + nBands * (800 + 2 * strlen(decrypted_path));
int nOffset = 0;
char* pszInlineVRT = msSmallMalloc( nMaxLen );
snprintf(pszInlineVRT, nMaxLen,
"<VRTDataset rasterXSize=\"%d\" rasterYSize=\"%d\">",
nXSize, nYSize);
nOffset = strlen(pszInlineVRT);
for( iBand = 1; iBand <= nBands; iBand++ )
{
const char* pszDataType = "Byte";
switch( GDALGetRasterDataType(GDALGetRasterBand(hDS, iBand)) )
{
case GDT_Byte: pszDataType = "Byte"; break;
case GDT_Int16: pszDataType = "Int16"; break;
case GDT_UInt16: pszDataType = "UInt16"; break;
case GDT_Int32: pszDataType = "Int32"; break;
case GDT_UInt32: pszDataType = "UInt32"; break;
case GDT_Float32: pszDataType = "Float32"; break;
case GDT_Float64: pszDataType = "Float64"; break;
default: break;
}
snprintf( pszInlineVRT + nOffset, nMaxLen - nOffset,
" <VRTRasterBand dataType=\"%s\" band=\"%d\">"
" <SimpleSource>"
" <SourceFilename relativeToVrt=\"1\"><![CDATA[%s]]></SourceFilename>"
" <SourceBand>%d</SourceBand>"
" <SrcRect xOff=\"%d\" yOff=\"%d\" xSize=\"%d\" ySize=\"%d\"/>"
" <DstRect xOff=\"%d\" yOff=\"%d\" xSize=\"%d\" ySize=\"%d\"/>"
" </SimpleSource>"
" <SimpleSource>"
" <SourceFilename relativeToVrt=\"1\"><![CDATA[%s]]></SourceFilename>"
" <SourceBand>%d</SourceBand>"
" <SrcRect xOff=\"%d\" yOff=\"%d\" xSize=\"%d\" ySize=\"%d\"/>"
" <DstRect xOff=\"%d\" yOff=\"%d\" xSize=\"%d\" ySize=\"%d\"/>"
" </SimpleSource>"
" </VRTRasterBand>",
pszDataType, iBand,
decrypted_path, iBand,
nXSize / 2, 0, nXSize - nXSize / 2, nYSize,
0, 0, nXSize - nXSize / 2, nYSize,
decrypted_path, iBand,
0, 0, nXSize / 2, nYSize,
nXSize - nXSize / 2, 0, nXSize / 2, nYSize );
nOffset += strlen(pszInlineVRT + nOffset);
}
snprintf(pszInlineVRT + nOffset, nMaxLen - nOffset,
"</VRTDataset>");
oldLayerExtent = layer->extent;
oldLayerData = layer->data;
oldLayerProjection = layer->projection;
layer->extent.minx = -180;
layer->extent.maxx = 180;
layer->data = pszInlineVRT;
layer->projection = map_tmp->projection;
/* map_tmp->projection is actually layer->projection without lon_wrap */
rect = uvlinfo->mapToUseForWhichShapes->extent;
msProjectRect(&uvlinfo->mapToUseForWhichShapes->projection,
&map_tmp->projection, &rect);
bHasLonWrap = MS_FALSE;
GDALClose(hDS);
}
msFree( decrypted_path );
}
}
if( isQuery )
{
/* For query mode, use layer->map->extent reprojected rather than */
/* the provided rect. Generic query code will filter returned features. */
rect = msUVRASTERGetSearchRect(layer, layer->map);
}
map_cellsize = MS_MAX(MS_CELLSIZE(rect.minx, rect.maxx,layer->map->width),
MS_CELLSIZE(rect.miny,rect.maxy,layer->map->height));
map_tmp->cellsize = map_cellsize*spacing;
map_tmp->extent.minx = rect.minx-(0.5*map_cellsize)+(0.5*map_tmp->cellsize);
map_tmp->extent.miny = rect.miny-(0.5*map_cellsize)+(0.5*map_tmp->cellsize);
map_tmp->extent.maxx = map_tmp->extent.minx+((width-1)*map_tmp->cellsize);
map_tmp->extent.maxy = map_tmp->extent.miny+((height-1)*map_tmp->cellsize);
if( bHasLonWrap && dfLonWrap == 180.0) {
if( map_tmp->extent.minx >= 180 ) {
/* Request on the right half of the shifted raster (= western hemisphere) */
map_tmp->extent.minx -= 360;
map_tmp->extent.maxx -= 360;
}
else if( map_tmp->extent.maxx >= 180.0 ) {
/* Request spanning on the 2 hemispheres => drawing whole planet */
/* Take only into account vertical resolution, as horizontal one */
/* will be unreliable (assuming square pixels...) */
map_cellsize = MS_CELLSIZE(rect.miny,rect.maxy,layer->map->height);
map_tmp->cellsize = map_cellsize*spacing;
width = 360.0 / map_tmp->cellsize;
map_tmp->extent.minx = -180.0+(0.5*map_tmp->cellsize);
map_tmp->extent.maxx = 180.0-(0.5*map_tmp->cellsize);
}
}
if (layer->debug)
msDebug("msUVRASTERLayerWhichShapes(): width: %d, height: %d, cellsize: %g\n",
width, height, map_tmp->cellsize);
if (layer->debug == 5)
msDebug("msUVRASTERLayerWhichShapes(): extent: %g %g %g %g\n",
map_tmp->extent.minx, map_tmp->extent.miny,
map_tmp->extent.maxx, map_tmp->extent.maxy);
/* important to use that function, to compute map
geotransform, used by the resampling*/
msMapSetSize(map_tmp, width, height);
if (layer->debug == 5)
msDebug("msUVRASTERLayerWhichShapes(): geotransform: %g %g %g %g %g %g\n",
map_tmp->gt.geotransform[0], map_tmp->gt.geotransform[1],
map_tmp->gt.geotransform[2], map_tmp->gt.geotransform[3],
map_tmp->gt.geotransform[4], map_tmp->gt.geotransform[5]);
uvlinfo->extent = map_tmp->extent;
image_tmp = msImageCreate(width, height, map_tmp->outputformatlist[0],
NULL, NULL, map_tmp->resolution, map_tmp->defresolution,
&(map_tmp->imagecolor));
/* Default set to AVERAGE resampling */
if( CSLFetchNameValue( layer->processing, "RESAMPLE" ) == NULL ) {
alteredProcessing = CSLDuplicate( layer->processing );
alteredProcessing =
CSLSetNameValue( alteredProcessing, "RESAMPLE",
"AVERAGE");
savedProcessing = layer->processing;
layer->processing = alteredProcessing;
}
/* disable masking at this level: we don't want to apply the mask at the raster level,
* it will be applied with the correct cellsize and image size in the vector rendering
* phase.
*/
saved_layer_mask = layer->mask;
layer->mask = NULL;
ret = msDrawRasterLayerLow(map_tmp, layer, image_tmp, NULL );
/* restore layer attributes if we went through the above on-the-fly VRT */
if( oldLayerData )
{
msFree(layer->data);
layer->data = oldLayerData;
layer->extent = oldLayerExtent;
layer->projection = oldLayerProjection;
}
/* restore layer mask */
layer->mask = saved_layer_mask;
/* restore the saved processing */
if (alteredProcessing != NULL) {
layer->processing = savedProcessing;
CSLDestroy(alteredProcessing);
}
if( ret == MS_FAILURE) {
msSetError(MS_MISCERR, "Unable to draw raster data.", "msUVRASTERLayerWhichShapes()");
msFreeMap(map_tmp);
msFreeImage(image_tmp);
return MS_FAILURE;
}
/* free old query arrays */
if (uvlinfo->u) {
for (i=0; i<uvlinfo->width; ++i) {
free(uvlinfo->u[i]);
}
free(uvlinfo->u);
}
if (uvlinfo->v) {
for (i=0; i<uvlinfo->width; ++i) {
free(uvlinfo->v[i]);
}
free(uvlinfo->v);
}
/* Update our uv layer structure */
uvlinfo->width = width;
uvlinfo->height = height;
uvlinfo->query_results = width*height;
uvlinfo->u = (float **)msSmallMalloc(sizeof(float *)*width);
uvlinfo->v = (float **)msSmallMalloc(sizeof(float *)*width);
for (x = 0; x < width; ++x) {
uvlinfo->u[x] = (float *)msSmallMalloc(height * sizeof(float));
uvlinfo->v[x] = (float *)msSmallMalloc(height * sizeof(float));
for (y = 0; y < height; ++y) {
u_src_off = v_src_off = x + y * width;
v_src_off += width*height;
uvlinfo->u[x][y] = image_tmp->img.raw_float[u_src_off];
uvlinfo->v[x][y] = image_tmp->img.raw_float[v_src_off];
/* null vector? update the number of results */
if (uvlinfo->u[x][y] == 0 && uvlinfo->v[x][y] == 0)
--uvlinfo->query_results;
}
}
msFreeImage(image_tmp); /* we do not need the imageObj anymore */
msFreeMap(map_tmp);
uvlinfo->next_shape = 0;
return MS_SUCCESS;
}
int msUVRASTERLayerGetShape(layerObj *layer, shapeObj *shape, resultObj *record)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
lineObj line ;
pointObj point;
int i, j, k, x=0, y=0;
long shapeindex = record->shapeindex;
msFreeShape(shape);
shape->type = MS_SHAPE_NULL;
if( shapeindex < 0 || shapeindex >= uvlinfo->query_results ) {
msSetError(MS_MISCERR,
"Out of range shape index requested. Requested %ld\n"
"but only %d shapes available.",
"msUVRASTERLayerGetShape()",
shapeindex, uvlinfo->query_results );
return MS_FAILURE;
}
/* loop to the next non null vector */
k = 0;
for (i=0, x=-1; i<uvlinfo->width && k<=shapeindex; ++i, ++x) {
for (j=0, y=-1; j<uvlinfo->height && k<=shapeindex; ++j, ++k, ++y) {
if (uvlinfo->u[i][j] == 0 && uvlinfo->v[i][j] == 0)
--k;
}
}
point.x = Pix2Georef(x, 0, uvlinfo->width-1,
uvlinfo->extent.minx, uvlinfo->extent.maxx, MS_FALSE);
point.y = Pix2Georef(y, 0, uvlinfo->height-1,
uvlinfo->extent.miny, uvlinfo->extent.maxy, MS_TRUE);
if (layer->debug == 5)
msDebug("msUVRASTERLayerWhichShapes(): shapeindex: %ld, x: %g, y: %g\n",
shapeindex, point.x, point.y);
point.m = 0.0;
shape->type = MS_SHAPE_POINT;
line.numpoints = 1;
line.point = &point;
msAddLine( shape, &line );
msComputeBounds( shape );
shape->numvalues = layer->numitems;
shape->values = msUVRASTERGetValues(layer, &uvlinfo->u[x][y], &uvlinfo->v[x][y]);
shape->index = shapeindex;
shape->resultindex = shapeindex;
return MS_SUCCESS;
}
int msUVRASTERLayerNextShape(layerObj *layer, shapeObj *shape)
{
uvRasterLayerInfo *uvlinfo = (uvRasterLayerInfo *) layer->layerinfo;
if( uvlinfo->next_shape < 0
|| uvlinfo->next_shape >= uvlinfo->query_results ) {
msFreeShape(shape);
shape->type = MS_SHAPE_NULL;
return MS_DONE;
} else {
resultObj record;
record.shapeindex = uvlinfo->next_shape++;
record.tileindex = 0;
record.classindex = record.resultindex = -1;
return msUVRASTERLayerGetShape( layer, shape, &record);
}
}
/************************************************************************/
/* msUVRASTERLayerGetExtent() */
/* Simple copy of the maprasterquery.c file. might change in the future */
/************************************************************************/
int msUVRASTERLayerGetExtent(layerObj *layer, rectObj *extent)
{
char szPath[MS_MAXPATHLEN];
mapObj *map = layer->map;
shapefileObj *tileshpfile;
if( (!layer->data || strlen(layer->data) == 0)
&& layer->tileindex == NULL) {
/* should we be issuing a specific error about not supporting
extents for tileindexed raster layers? */
return MS_FAILURE;
}
if( map == NULL )
return MS_FAILURE;
/* If the layer use a tileindex, return the extent of the tileindex shapefile/referenced layer */
if (layer->tileindex) {
const int tilelayerindex = msGetLayerIndex(map, layer->tileindex);
if(tilelayerindex != -1) /* does the tileindex reference another layer */
return msLayerGetExtent(GET_LAYER(map, tilelayerindex), extent);
else {
tileshpfile = (shapefileObj *) malloc(sizeof(shapefileObj));
MS_CHECK_ALLOC(tileshpfile, sizeof(shapefileObj), MS_FAILURE);
if(msShapefileOpen(tileshpfile, "rb", msBuildPath3(szPath, map->mappath, map->shapepath, layer->tileindex), MS_TRUE) == -1)
if(msShapefileOpen(tileshpfile, "rb", msBuildPath(szPath, map->mappath, layer->tileindex), MS_TRUE) == -1)
return MS_FAILURE;
*extent = tileshpfile->bounds;
msShapefileClose(tileshpfile);
free(tileshpfile);
return MS_SUCCESS;
}
}
msTryBuildPath3(szPath, map->mappath, map->shapepath, layer->data);
char* decrypted_path = msDecryptStringTokens( map, szPath );
if( !decrypted_path )
return MS_FAILURE;
GDALAllRegister();
char** connectionoptions = msGetStringListFromHashTable(&(layer->connectionoptions));
GDALDatasetH hDS = GDALOpenEx(decrypted_path,
GDAL_OF_RASTER,
NULL,
(const char* const*)connectionoptions,
NULL);
CSLDestroy(connectionoptions);
msFree( decrypted_path );
if( hDS == NULL ) {
return MS_FAILURE;
}
const int nXSize = GDALGetRasterXSize( hDS );
const int nYSize = GDALGetRasterYSize( hDS );
double adfGeoTransform[6] = {0};
const CPLErr eErr = GDALGetGeoTransform( hDS, adfGeoTransform );
if( eErr != CE_None ) {
GDALClose( hDS );
return MS_FAILURE;
}
/* If this appears to be an ungeoreferenced raster than flip it for
mapservers purposes. */
if( adfGeoTransform[5] == 1.0 && adfGeoTransform[3] == 0.0 ) {
adfGeoTransform[5] = -1.0;
adfGeoTransform[3] = nYSize;
}
extent->minx = adfGeoTransform[0];
extent->maxy = adfGeoTransform[3];
extent->maxx = adfGeoTransform[0] + nXSize * adfGeoTransform[1];
extent->miny = adfGeoTransform[3] + nYSize * adfGeoTransform[5];
return MS_SUCCESS;
}
/************************************************************************/
/* msUVRASTERLayerSetTimeFilter() */
/* */
/* This function is actually just used in the context of */
/* setting a filter on the tileindex for time based queries. */
/* For instance via WMS requests. So it isn't really related */