PostGIS  2.5.0dev-r@@SVN_REVISION@@

◆ gbox_to_gml2()

static char* gbox_to_gml2 ( const GBOX bbox,
const char *  srs,
int  precision,
const char *  prefix 
)
static

Definition at line 75 of file lwout_gml.c.

References GBOX::flags, FLAGS_GET_Z, LW_TRUE, lwalloc(), pointArray_GMLsize(), pointArray_toGML2(), ptarray_append_point(), ptarray_construct_empty(), ptarray_free(), POINT4D::x, GBOX::xmax, GBOX::xmin, POINT4D::y, GBOX::ymax, GBOX::ymin, POINT4D::z, GBOX::zmax, and GBOX::zmin.

Referenced by lwgeom_extent_to_gml2().

76 {
77  int size;
78  POINT4D pt;
79  POINTARRAY *pa;
80  char *ptr, *output;
81  size_t prefixlen = strlen(prefix);
82 
83  if ( ! bbox )
84  {
85  size = ( sizeof("<Box>/") + (prefixlen*2) ) * 2;
86  if ( srs ) size += strlen(srs) + sizeof(" srsName=..");
87 
88  ptr = output = lwalloc(size);
89 
90  ptr += sprintf(ptr, "<%sBox", prefix);
91 
92  if ( srs ) ptr += sprintf(ptr, " srsName=\"%s\"", srs);
93 
94  ptr += sprintf(ptr, "/>");
95 
96  return output;
97  }
98 
99  pa = ptarray_construct_empty(FLAGS_GET_Z(bbox->flags), 0, 2);
100 
101  pt.x = bbox->xmin;
102  pt.y = bbox->ymin;
103  if (FLAGS_GET_Z(bbox->flags)) pt.z = bbox->zmin;
104  ptarray_append_point(pa, &pt, LW_TRUE);
105 
106  pt.x = bbox->xmax;
107  pt.y = bbox->ymax;
108  if (FLAGS_GET_Z(bbox->flags)) pt.z = bbox->zmax;
109  ptarray_append_point(pa, &pt, LW_TRUE);
110 
111  size = pointArray_GMLsize(pa, precision);
112  size += ( sizeof("<Box><coordinates>/") + (prefixlen*2) ) * 2;
113  if ( srs ) size += strlen(srs) + sizeof(" srsName=..");
114 
115  ptr = output = lwalloc(size);
116 
117  if ( srs ) ptr += sprintf(ptr, "<%sBox srsName=\"%s\">", prefix, srs);
118  else ptr += sprintf(ptr, "<%sBox>", prefix);
119 
120  ptr += sprintf(ptr, "<%scoordinates>", prefix);
121  ptr += pointArray_toGML2(pa, ptr, precision);
122  ptr += sprintf(ptr, "</%scoordinates></%sBox>", prefix, prefix);
123 
124  ptarray_free(pa);
125 
126  return output;
127 }
double x
Definition: liblwgeom.h:354
double xmax
Definition: liblwgeom.h:295
POINTARRAY * ptarray_construct_empty(char hasz, char hasm, uint32_t maxpoints)
Create a new POINTARRAY with no points.
Definition: ptarray.c:70
void ptarray_free(POINTARRAY *pa)
Definition: ptarray.c:328
double zmax
Definition: liblwgeom.h:299
double ymin
Definition: liblwgeom.h:296
double xmin
Definition: liblwgeom.h:294
int ptarray_append_point(POINTARRAY *pa, const POINT4D *pt, int allow_duplicates)
Append a point to the end of an existing POINTARRAY If allow_duplicate is LW_FALSE, then a duplicate point will not be added.
Definition: ptarray.c:156
#define LW_TRUE
Return types for functions with status returns.
Definition: liblwgeom.h:75
uint8_t precision
Definition: cu_in_twkb.c:25
double ymax
Definition: liblwgeom.h:297
#define FLAGS_GET_Z(flags)
Macros for manipulating the &#39;flags&#39; byte.
Definition: liblwgeom.h:139
double z
Definition: liblwgeom.h:354
uint8_t flags
Definition: liblwgeom.h:293
static size_t pointArray_GMLsize(POINTARRAY *pa, int precision)
Definition: lwout_gml.c:1949
double zmin
Definition: liblwgeom.h:298
static size_t pointArray_toGML2(POINTARRAY *pa, char *buf, int precision)
Definition: lwout_gml.c:662
void * lwalloc(size_t size)
Definition: lwutil.c:229
double y
Definition: liblwgeom.h:354
Here is the call graph for this function:
Here is the caller graph for this function: