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docs for swizzle

db4
Joe Groff 2009-02-04 20:05:26 -06:00
parent ccdd8999e1
commit 91c0634451
1 changed files with 6 additions and 1 deletions
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7
extra/quadtrees/quadtrees-docs.factor
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@ -10,7 +10,9 @@ ARTICLE: "quadtrees" "Quadtrees"
"The following words are provided to help write quadtree algorithms:"
{ $subsection descend }
{ $subsection each-quadrant }
{ $subsection map-quadrant } ;
{ $subsection map-quadrant }
"Quadtrees can be used to \"swizzle\" a sequence to improve the locality of spatial data in memory:"
{ $subsection swizzle } ;
ABOUT: "quadtrees"
@ -38,3 +40,6 @@ HELP: map-quadrant
{ $values { "node" quadtree } { "quot" quotation } { "array" array } }
{ $description "Calls " { $snippet "quot" } " with each subnode of " { $snippet "node" } " on the top of the stack in turn, collecting the four results into " { $snippet "array" } "." } ;
HELP: swizzle
{ $values { "sequence" sequence } { "quot" quotation } { "sequence'" sequence } }
{ $description "Swizzles " { $snippet "sequence" } " based on the two-dimensional vector values returned by calling " { $snippet "quot" } " on each element of " { $snippet "sequence" } "." } ;