ios - Setting up CIFilter in Swift -

ios - Setting up CIFilter in Swift -

how 1 translate lastly line of next objc code swift:

cgaffinetransform transform = cgaffinetransformidentity; cifilter *clampfilter = [cifilter filterwithname:@"ciaffineclamp"]; [clampfilter setvalue:[nsvalue valuewithbytes:&transform objctype:@encode(cgaffinetransform)] forkey:@"inputtransform"];

the next line

clampfilter.setvalue(transform, forkey: "inputtransform")

produces

type 'cgaffinetransform' not conform protocol 'anyobject'

nsvalue has constructor takes cgaffinetransform argument:

let transform = cgaffinetransformidentity allow clampfilter = cifilter(name: "ciaffineclamp") allow val = nsvalue(cgaffinetransform: transform) clampfilter.setvalue(val, forkey: "inputtransform")

ios objective-c swift core-image