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Process
This Process function shows expanded Image creation to define extra channels so there are 8 channels RGBA and Bg-RGBA.
NOTE That any number variables using any name can be passed to the functions, these do not have to be declared. In this case 3 variables gain, bright, var_C {gain = 2.0, bright=-0.3, var_C=1.5} are passed to the function.
MultiProcessPixels will use the defined function and apply it to the images.
function Process(req)
local img1 = InImage1:GetValue(req) local img2 = InImage2:GetValue(req)
local operation = InOperation:GetValue(req).Value+1 if img2 == nil then
img2 = img1
end
--This creates an image with 4 extra channels for function 5 local imgattrs = {
IMG_Document = self.Comp,
{ IMG_Channel = "Red", },
{ IMG_Channel = "Green", },
{ IMG_Channel = "Blue", },
{ IMG_Channel = "Alpha", },
{ IMG_Channel = "BgGreen", },
{ IMG_Channel = "BgBlue", },
{ IMG_Channel = "BgAlpha", }, IMG_Width = img1.Width, IMG_Height = img1.Height, IMG_XScale = img1.XAspect, IMG_YScale = img1.YAspect,
IMAT_OriginalWidth = img1.realwidth, IMAT_OriginalHeight = img1.realheight, IMG_Quality = not req:IsQuick(), IMG_MotionBlurQuality = not req:IsNoMotionBlur(),
}
if not req:IsStampOnly() then imgattrs.IMG_ProxyScale = 1
end
if SourceDepth ~= 0 then imgattrs.IMG_Depth = SourceDepth
end
local out = Image(imgattrs)
local func = op_funcs[operation] -- get pointer to the function from the table
-- Must have a valid operation function, and images must be same dimensions
if func and (img1.Width == img2.Width) and (img1.Height == img2.Height) then out = Image({IMG_Like = img1})
out:MultiProcessPixels(nil, {gain = 2.0, bright=-0.3, var_C=1.5}, 0,0, img1.Width, img1.Height, img1, img2, func)
end
OutImage:Set(req, out)
end