C++ (Cpp) gbox_to_string示例

示例#1

文件： geography_gist.c 项目： swapna123/Hyderabad-Homes

/* Convert a double-based GBOX into a float-based GIDX,
   ensuring the float box is larger than the double box */
static int gidx_from_gbox_p(GBOX box, GIDX *a)
{
	int ndims;

	ndims = (FLAGS_GET_GEODETIC(box.flags) ? 3 : FLAGS_NDIMS(box.flags));
	SET_VARSIZE(a, VARHDRSZ + ndims * 2 * sizeof(float));

	GIDX_SET_MIN(a,0,nextDown_f(box.xmin));
	GIDX_SET_MAX(a,0,nextUp_f(box.xmax));
	GIDX_SET_MIN(a,1,nextDown_f(box.ymin));
	GIDX_SET_MAX(a,1,nextUp_f(box.ymax));

	/* Geodetic indexes are always 3d, geocentric x/y/z */
	if ( FLAGS_GET_GEODETIC(box.flags) )
	{
		GIDX_SET_MIN(a,2,nextDown_f(box.zmin));
		GIDX_SET_MAX(a,2,nextUp_f(box.zmax));
	}
	else
	{
		/* Cartesian with Z implies Z is third dimension */
		if ( FLAGS_GET_Z(box.flags) )
		{
			GIDX_SET_MIN(a,2,nextDown_f(box.zmin));
			GIDX_SET_MAX(a,2,nextUp_f(box.zmax));
			if ( FLAGS_GET_M(box.flags) )
			{
				GIDX_SET_MIN(a,3,nextDown_f(box.mmin));
				GIDX_SET_MAX(a,3,nextUp_f(box.mmax));
			}
		}
		/* Unless there's no Z, in which case M is third dimension */
		else if ( FLAGS_GET_M(box.flags) )
		{
			GIDX_SET_MIN(a,2,nextDown_f(box.mmin));
			GIDX_SET_MAX(a,2,nextUp_f(box.mmax));
		}
	}

	POSTGIS_DEBUGF(5, "converted %s to %s", gbox_to_string(&box), gidx_to_string(a));

	return G_SUCCESS;
}

示例#2

文件： gserialized_gist.c 项目： NianYue/pipelinedb

/* Convert a double-based GBOX into a float-based GIDX,
   ensuring the float box is larger than the double box */
static int gidx_from_gbox_p(GBOX box, GIDX *a)
{
	int ndims;

	ndims = FLAGS_NDIMS_GIDX(box.flags);
	SET_VARSIZE(a, VARHDRSZ + ndims * 2 * sizeof(float));

	GIDX_SET_MIN(a,0,next_float_down(box.xmin));
	GIDX_SET_MAX(a,0,next_float_up(box.xmax));
	GIDX_SET_MIN(a,1,next_float_down(box.ymin));
	GIDX_SET_MAX(a,1,next_float_up(box.ymax));

	/* Geodetic indexes are always 3d, geocentric x/y/z */
	if ( FLAGS_GET_GEODETIC(box.flags) )
	{
		GIDX_SET_MIN(a,2,next_float_down(box.zmin));
		GIDX_SET_MAX(a,2,next_float_up(box.zmax));
	}
	else
	{
		/* Cartesian with Z implies Z is third dimension */
		if ( FLAGS_GET_Z(box.flags) )
		{
			GIDX_SET_MIN(a,2,next_float_down(box.zmin));
			GIDX_SET_MAX(a,2,next_float_up(box.zmax));
		}
		/* M is always fourth dimension, we pad if needed */
		if ( FLAGS_GET_M(box.flags) )
		{
			if ( ! FLAGS_GET_Z(box.flags) )
			{
				GIDX_SET_MIN(a,2,-1*FLT_MAX);
				GIDX_SET_MAX(a,2,FLT_MAX);
			}
			GIDX_SET_MIN(a,3,next_float_down(box.mmin));
			GIDX_SET_MAX(a,3,next_float_up(box.mmax));
		}
	}

	POSTGIS_DEBUGF(5, "converted %s to %s", gbox_to_string(&box), gidx_to_string(a));

	return LW_SUCCESS;
}