[postgis-devel] [PostGIS] #1207: Can't compile under Windows mingw since raster commit

[PostGIS]

#1207: Can't compile under Windows mingw since raster commit
----------------------------+-----------------------------------------------
 Reporter:  robe            |       Owner:  pracine      
     Type:  defect          |      Status:  new          
 Priority:  blocker         |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
----------------------------+-----------------------------------------------

Comment(by dustymugs):

 The ST_Intersects function does not use any GDAL functionality.  The
 lwgeom_geos.h is used for testing the convex hulls of the two rasters  for
 intersection and if one raster is completely within the other.

 The relevant bit of code that needs lwgeom_geos.h is on line 8350 and in
 the code block below.

 {{{
         do {
                 int rtn;

                 initGEOS(lwnotice, lwgeom_geos_error);

                 rtn = 1;
                 for (i = 0; i < 2; i++) {
                         hull[i] = rt_raster_get_convex_hull(i < 1 ? rast1
 : rast2);
                         if (NULL == hull[i]) {
                                 for (j = 0; j < i; j++) {
                                         GEOSGeom_destroy(ghull[j]);
                                         lwpoly_free(hull[j]);
                                 }
                                 rtn = 0;
                                 break;
                         }
                         ghull[i] = (GEOSGeometry *) LWGEOM2GEOS((LWGEOM *)
 hull[i]);
                         if (NULL == ghull[i]) {
                                 for (j = 0; j < i; j++) {
                                         GEOSGeom_destroy(ghull[j]);
                                         lwpoly_free(hull[j]);
                                 }
                                 lwpoly_free(hull[i]);
                                 rtn = 0;
                                 break;
                         }
                 }
                 if (!rtn) break;

                 /* test to see if raster within the other */
                 within = 0;
                 if (GEOSWithin(ghull[0], ghull[1]) == 1)
                         within = -1;
                 else if (GEOSWithin(ghull[1], ghull[0]) == 1)
                         within = 1;

                 if (within != 0)
                         rtn = 1;
                 else
                         rtn = GEOSIntersects(ghull[0], ghull[1]);

                 for (i = 0; i < 2; i++) {
                         GEOSGeom_destroy(ghull[i]);
                         lwpoly_free(hull[i]);
                 }

                 if (rtn != 2) {
                         RASTER_DEBUGF(4, "convex hulls of rasters do
 %sintersect", rtn != 1 ? "NOT " : "");
                         if (rtn != 1) {
                                 *intersects = 0;
                                 return 1;
                         }
                         /* band isn't specified */
                         else if (nband1 < 0) {
                                 *intersects = 1;
                                 return 1;
                         }
                 }
         }
         while (0);
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1207#comment:8>
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