library-mirrors/hump
1
0
Fork 0
mirror of https://github.com/vrld/hump.git synced 2024-11-23 12:24:19 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add projection and perpendicular

Browse Source
This commit is contained in:
Matthias Richter 2010-08-17 13:17:01 +02:00
parent 6315155955
commit 66c0f92a30
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
vector.lua
View File

@ -102,3 +102,12 @@ end
function Vector:rotated(phi)
return self:clone():rotate_inplace(phi)
end
function Vector:perpendicular()
return vector(-self.y, self.x)
end
function Vector:projectOn(v)
assert(isvector(v), "invalid argument: cannot project onto anything other than a vector.")
return (self * v) * v / v:len2()
end