29.15 SDO_PC_PKG.SDO_PC_NN_FOR_EACH
Format
SDO_PC_PKG.SDO_PC_NN_FOR_EACH( blocks IN SIMPLE_BLK_REF, pc IN SDO_PC, n IN NUMBER, max_dist IN NUMBER, qry_min_res IN NUMBER, qry_max_res IN NUMBER ) RETURN POINT_NEIGHBOR_PAIR_TAB;
Description
Returns the nearest n points, for each point within a query range.
Parameters
- blocks
-
A table of PC blocks, individual query windows, and non-spatial query constraints.
- pc
-
Point cloud object of type SDO_PC.
- n
-
Number of nearest points to find for each point in the query range.
- max_dist
-
Maximum distance to check for neighbors.
- qry_min_res
-
Minimum pyramid level for point clouds with pyramids. (As shown in the Example, different query windows (closer to or farther from the beholder) can be used for different pyramid levels.
- qry_max_res
-
Maximum pyramid level for point clouds with pyramids. (As shown in the Example, different query windows (closer to or farther from the beholder) can be used for different pyramid levels.
Usage Notes
The types related to this function are defined as follows.
TYPE SIMPLE_BLK_REF is RECORD ( blk_id number, ind_dim_qry MDSYS.sdo_geometry, other_dim_qry MDSYS.sdo_mbr); TYPE POINT_NEIGHBOR_PAIR_ROW is RECORD ( obj_id number, blk_id number, pt_id number, pt_x number, pt_y number, pt_z number, neighbor_rank number, neighbor_dist number, neighbor_blk_id number, neighbor_pt_id number, neighbor_x number, neighbor_y number, neighbor_z number); TYPE POINT_NEIGHBOR_PAIR_TAB is TABLE of POINT_NEIGHBOR_PAIR_ROW;
Modeling Solids describes how to use point clouds to model solids.
Examples
The following example returns the nearest 10 points, for each point within the specified query range.
define query_window = SDO_GEOMETRY(2003,NULL,NULL,SDO_ELEM_INFO_ARRAY(1,1003,3),SDO_ORDINATE_ARRAY(100,100,102,102));
with
candidates AS (
select
blocks.blk_id,
SDO_GEOM.SDO_INTERSECTION(subqueries.ind_dim_qry, blocks.blk_extent, 0.05),
subqueries.other_dim_qry
from
blocks blocks,
(
select 1 min_res, 1 max_res, &query_window ind_dim_qry, cast(null as sdo_mbr) other_dim_qry from dual union all
select 2 min_res, 5 max_res, &query_window ind_dim_qry, cast(null as sdo_mbr) other_dim_qry from dual
) subqueries
where
blocks.obj_id = 1 and
blocks.pcblk_min_res <= max_res and
blocks.pcblk_max_res >= min_res and
SDO_ANYINTERACT(blocks.blk_extent, subqueries.ind_dim_qry) = 'TRUE')
select /*+ parallel (2) */
*
from
table(
sdo_pc_pkg.sdo_pc_nn_for_each(
blocks => cursor(select * from candidates),
pc => (select pc from pcs where id = 1),
n => 10,
max_dist => 10,
qry_min_res => 1,
qry_max_res => 1))
order by
obj_id,
blk_id,
pt_id,
neighbor_rank;
old 10: select 1 min_res, 1 max_res, &query_window ind_dim_qry, cast(null as sdo_mbr) other_dim_qry from dual union all
new 10: select 1 min_res, 1 max_res, SDO_GEOMETRY(2003,NULL,NULL,SDO_ELEM_INFO_ARRAY(1,1003,3),SDO_ORDINATE_ARRAY(100,100,102,102)) ind_dim_qry, cast(null as sdo_mbr) other_dim_qry from dual union all
old 11: select 2 min_res, 5 max_res, &query_window ind_dim_qry, cast(null as sdo_mbr) other_dim_qry from dual
new 11: select 2 min_res, 5 max_res, SDO_GEOMETRY(2003,NULL,NULL,SDO_ELEM_INFO_ARRAY(1,1003,3),SDO_ORDINATE_ARRAY(100,100,102,102)) ind_dim_qry, cast(null as sdo_mbr) other_dim_qry from dual
OBJ_ID BLK_ID PT_ID PT_X PT_Y PT_Z NEIGHBOR_RANK NEIGHBOR_DIST NEIGHBOR_BLK_ID NEIGHBOR_PT_ID NEIGHBOR_X NEIGHBOR_Y NEIGHBOR_Z
---------- ---------- ---------- ---------- ---------- ---------- ------------- ------------- --------------- -------------- ---------- ---------- ----------
1 2 272 100 100 200 1 0 2 272 100 100 200
1 2 272 100 100 200 2 1.41421356 2 268 99 101 200
1 2 272 100 100 200 3 1.41421356 2 271 99 100 199
1 2 272 100 100 200 4 1.41421356 2 293 100 99 199
1 2 272 100 100 200 5 1.41421356 2 275 100 101 201
1 2 272 100 100 200 6 1.41421356 2 273 101 100 201
1 2 272 100 100 200 7 1.41421356 2 292 101 99 200
1 2 272 100 100 200 8 2.44948974 2 269 98 101 199
1 2 272 100 100 200 9 2.44948974 2 250 99 99 198
1 2 272 100 100 200 10 2.44948974 2 267 99 102 201
1 2 273 101 100 201 1 0 2 273 101 100 201
1 2 273 101 100 201 2 1.41421356 2 272 100 100 200
1 2 273 101 100 201 3 1.41421356 2 275 100 101 201
1 2 273 101 100 201 4 1.41421356 2 292 101 99 200
1 2 273 101 100 201 5 1.41421356 2 274 101 101 202
1 2 273 101 100 201 6 1.41421356 2 291 102 99 201
1 2 273 101 100 201 7 1.41421356 2 286 102 100 202
1 2 273 101 100 201 8 2.44948974 2 268 99 101 200
1 2 273 101 100 201 9 2.44948974 2 293 100 99 199
1 2 273 101 100 201 10 2.44948974 2 276 100 102 202
1 2 274 101 101 202 1 0 2 274 101 101 202
1 2 274 101 101 202 2 1.41421356 2 276 100 102 202
1 2 274 101 101 202 3 1.41421356 2 275 100 101 201
1 2 274 101 101 202 4 1.41421356 2 273 101 100 201
1 2 274 101 101 202 5 1.41421356 2 279 101 102 203
1 2 274 101 101 202 6 1.41421356 2 286 102 100 202
1 2 274 101 101 202 7 1.41421356 2 285 102 101 203
1 2 274 101 101 202 8 2.44948974 2 267 99 102 201
1 2 274 101 101 202 9 2.44948974 2 272 100 100 200
1 2 274 101 101 202 10 2.44948974 2 277 100 103 203
1 2 275 100 101 201 1 0 2 275 100 101 201
1 2 275 100 101 201 2 1.41421356 2 267 99 102 201
1 2 275 100 101 201 3 1.41421356 2 268 99 101 200
1 2 275 100 101 201 4 1.41421356 2 272 100 100 200
1 2 275 100 101 201 5 1.41421356 2 276 100 102 202
1 2 275 100 101 201 6 1.41421356 2 273 101 100 201
1 2 275 100 101 201 7 1.41421356 2 274 101 101 202
1 2 275 100 101 201 8 2.44948974 2 264 98 102 200
1 2 275 100 101 201 9 2.44948974 2 266 99 103 202
1 2 275 100 101 201 10 2.44948974 2 271 99 100 199
1 2 276 100 102 202 1 0 2 276 100 102 202
1 2 276 100 102 202 2 1.41421356 2 266 99 103 202
1 2 276 100 102 202 3 1.41421356 2 267 99 102 201
1 2 276 100 102 202 4 1.41421356 2 277 100 103 203
1 2 276 100 102 202 5 1.41421356 2 275 100 101 201
1 2 276 100 102 202 6 1.41421356 2 274 101 101 202
1 2 276 100 102 202 7 1.41421356 2 279 101 102 203
1 2 276 100 102 202 8 2.44948974 2 265 98 103 201
1 2 276 100 102 202 9 2.44948974 2 469 99 104 203
1 2 276 100 102 202 10 2.44948974 2 268 99 101 200
1 2 279 101 102 203 1 0 2 279 101 102 203
1 2 279 101 102 203 2 1.41421356 2 277 100 103 203
1 2 279 101 102 203 3 1.41421356 2 276 100 102 202
1 2 279 101 102 203 4 1.41421356 2 274 101 101 202
1 2 279 101 102 203 5 1.41421356 2 278 101 103 204
1 2 279 101 102 203 6 1.41421356 2 280 102 102 204
1 2 279 101 102 203 7 1.41421356 2 285 102 101 203
1 2 279 101 102 203 8 2.44948974 2 266 99 103 202
1 2 279 101 102 203 9 2.44948974 2 458 100 104 204
1 2 279 101 102 203 10 2.44948974 2 275 100 101 201
1 2 280 102 102 204 1 0 2 280 102 102 204
1 2 280 102 102 204 2 1.41421356 2 278 101 103 204
1 2 280 102 102 204 3 1.41421356 2 279 101 102 203
1 2 280 102 102 204 4 1.41421356 2 285 102 101 203
1 2 280 102 102 204 5 1.41421356 2 281 102 103 205
1 2 280 102 102 204 6 1.41421356 2 283 103 102 205
1 2 280 102 102 204 7 1.41421356 2 284 103 101 204
1 2 280 102 102 204 8 2.44948974 2 277 100 103 203
1 2 280 102 102 204 9 2.44948974 2 457 101 104 205
1 2 280 102 102 204 10 2.44948974 2 274 101 101 202
1 2 285 102 101 203 1 0 2 285 102 101 203
1 2 285 102 101 203 2 1.41421356 2 274 101 101 202
1 2 285 102 101 203 3 1.41421356 2 279 101 102 203
1 2 285 102 101 203 4 1.41421356 2 280 102 102 204
1 2 285 102 101 203 5 1.41421356 2 286 102 100 202
1 2 285 102 101 203 6 1.41421356 2 284 103 101 204
1 2 285 102 101 203 7 1.41421356 2 287 103 100 203
1 2 285 102 101 203 8 2.44948974 2 276 100 102 202
1 2 285 102 101 203 9 2.44948974 2 273 101 100 201
1 2 285 102 101 203 10 2.44948974 2 278 101 103 204
1 2 286 102 100 202 1 0 2 286 102 100 202
1 2 286 102 100 202 2 1.41421356 2 273 101 100 201
1 2 286 102 100 202 3 1.41421356 2 274 101 101 202
1 2 286 102 100 202 4 1.41421356 2 291 102 99 201
1 2 286 102 100 202 5 1.41421356 2 285 102 101 203
1 2 286 102 100 202 6 1.41421356 2 287 103 100 203
1 2 286 102 100 202 7 1.41421356 2 288 103 99 202
1 2 286 102 100 202 8 2.44948974 2 275 100 101 201
1 2 286 102 100 202 9 2.44948974 2 292 101 99 200
1 2 286 102 100 202 10 2.44948974 2 279 101 102 203
90 rows selected.
Elapsed: 00:00:03.02Parent topic: SDO_PC_PKG Package (Point Clouds)