CT3

function ct3(clip c)
{ ## (c) MWilson 2017
c=c.converttoyv12()
v=c.gaussresize(512,512).converttoyv12()
y=interleave(v,v.turnright())
b=y.f2quiver(1,3,70,127,24,frad=16)
g=y.f2quiver(1,3,32,110,0,frad=16)
r=y.f2quiver(1,3,90,115,0,frad=16)
mergergb(r,g,b)
merge(last.selecteven(),last.selectodd().turnleft())
autogamma()
converttoyv12()
uu_mt_blend(v,last,mode="gmerge",cmode=5)
gaussresize(width(c),height(c))
invert("V")
converttorgb()
subtract(last,showred)
subtract(showgreen,last)
subtract(showblue,last)
converttoyv12()
gaussresize(120,120,p=1)
gaussresize(width(c),height(c))
coloryuv(autowhite=true)
mergeluma(c)
return last
}