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Performance optimization to cellContains() in RTREE.

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FossilOrigin-Name: 43cde22bf3f36687df231eddf642581d1d4f4102ad8568d31f5b2ff0302ca800
This commit is contained in:
drh 2023-09-13 14:07:07 +00:00
parent cdae00b3e8
commit f9967cb302
3 changed files with 18 additions and 15 deletions
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19
ext/rtree/rtree.c
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@ -2162,14 +2162,17 @@ static void cellUnion(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){
*/
static int cellContains(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){
int ii;
int isInt = (pRtree->eCoordType==RTREE_COORD_INT32);
for(ii=0; ii<pRtree->nDim2; ii+=2){
RtreeCoord *a1 = &p1->aCoord[ii];
RtreeCoord *a2 = &p2->aCoord[ii];
if( (!isInt && (a2[0].f<a1[0].f || a2[1].f>a1[1].f))
|| ( isInt && (a2[0].i<a1[0].i || a2[1].i>a1[1].i))
){
return 0;
if( pRtree->eCoordType==RTREE_COORD_INT32 ){
for(ii=0; ii<pRtree->nDim2; ii+=2){
RtreeCoord *a1 = &p1->aCoord[ii];
RtreeCoord *a2 = &p2->aCoord[ii];
if( a2[0].i<a1[0].i || a2[1].i>a1[1].i ) return 0;
}
}else{
for(ii=0; ii<pRtree->nDim2; ii+=2){
RtreeCoord *a1 = &p1->aCoord[ii];
RtreeCoord *a2 = &p2->aCoord[ii];
if( a2[0].f<a1[0].f || a2[1].f>a1[1].f ) return 0;
}
}
return 1;

12
manifest
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@ -1,5 +1,5 @@
C In\sthe\sChooseLeaf\salgorithm\sof\sRTREE,\sdo\san\sinitial\spass\sthrough\sthe\scells\nof\sa\snode\slooking\sfor\ssolutions\sthat\sinvolve\sno\scell\senlargement.\s\sOnly\slook\nfor\sthe\sminimum\scell\senlargement\sif\sthe\senlargement\sis\snon-zero\sfor\sall\scells.\nThis\sresults\sin\sa\sperformance\simprovement\sby\sreducing\sthe\snumber\sof\scalls\nto\scellUnion().
D 2023-09-13T13:12:08.325
C Performance\soptimization\sto\scellContains()\sin\sRTREE.
D 2023-09-13T14:07:07.116
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -471,7 +471,7 @@ F ext/repair/test/checkindex01.test b530f141413b587c9eb78ff734de6bb79bc3515c3350
F ext/repair/test/test.tcl 686d76d888dffd021f64260abf29a55c57b2cedfa7fc69150b42b1d6119aac3c
F ext/rtree/README 6315c0d73ebf0ec40dedb5aa0e942bc8b54e3761
F ext/rtree/geopoly.c 971e0b5bd9adaf0811feb8c0842a310811159da10319eb0e74fdb42bf26b99ca
F ext/rtree/rtree.c 14e745969e69f128b27c3106318fd9bb5f87eb00c5bfdd5ccbb60a1872deb5b7
F ext/rtree/rtree.c 461502ef5fa031e5fc7837377b23bfae24934414a88f6bf5505921864aae788f
F ext/rtree/rtree.h 4a690463901cb5e6127cf05eb8e642f127012fd5003830dbc974eca5802d9412
F ext/rtree/rtree1.test 877d40b8b61b1f88cec9d4dc0ff8334f5b05299fac12a35141532e2881860e9d
F ext/rtree/rtree2.test 9d9deddbb16fd0c30c36e6b4fdc3ee3132d765567f0f9432ee71e1303d32603d
@ -2119,8 +2119,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P c633fe6be0edc07a0aa1ac819d58b6c629b7c95b47b63516ae1b0a937f6a2b89
R c022f3599d3f41d22b9b1469e98905ec
P 59f0e239d19393190911ea3bd89b5a24be0d85d64ccf51906efc9537ad5d7298
R e9b5b4a1842b9ceb8d187565fea4e7e6
U drh
Z 4cc63f132e0276d1f1f57289f0e4433b
Z cf6aeb5bc7687975d4feb7bd21780d1c
# Remove this line to create a well-formed Fossil manifest.

2
manifest.uuid
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@ -1 +1 @@
59f0e239d19393190911ea3bd89b5a24be0d85d64ccf51906efc9537ad5d7298
43cde22bf3f36687df231eddf642581d1d4f4102ad8568d31f5b2ff0302ca800