Color wheel: Difference between revisions

 

void local fn BuildWindow

CGRect r = fn CGRectMake( 0, 0, 400, 400 )

window _window, @"ColorWheel", r, NSWindowStyleMaskTitled + NSWindowStyleMaskClosable

 

local fn CIImageToImageRef( ciImage as CIImageRef ) as ImageRef

CIImageRepRef rep = fn CIImageRepWithCIImage( ciImage )

CGSize size = fn ImageRepSize( rep )

 

local fn ColorWheelImage( colorSpace as CGColorSpaceRef, dither as CFNumberRef, radius as CFNumberRef, softness as CFNumberRef, lightness as CFNumberRef ) as CIImageRef

CIFilterRef filter = fn CIFilterWithName( @"CIHueSaturationValueGradient" )

ObjectSetValueForkey( filter, colorSpace, @"inputColorSpace" )

 

local fn BuildColorWheel

CIImageRef colorWheelCIImage = fn ColorWheelImage( fn CGColorSpaceCreateDeviceRGB, @0, @160, @0, @1 )

ImageRef colorWheelImage = fn CIImageToImageRef( colorWheelCIImage )