指定画像の指定座標の色情報をRGBで取得

指定画像の指定座標のピクセルの色を8ビットRGB値で返すAppleScriptです。

使用する座標系は左上が{0,0}です。

AppleScript名：指定画像の指定座標の色情報をRGBで取得.scptd

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–　　Created by: Takaaki Naganoya
–　　Created on: 2018/11/15
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–　　Copyright © 2018 Piyomaru Software, All Rights Reserved
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use AppleScript version "2.4" — Yosemite (10.10) or later
use framework "Cocoa" –Foundation + AppKit
use scripting additions

property NSImage : a reference to current application’s NSImage
property NSBitmapImageRep : a reference to current application’s NSBitmapImageRep

set aFile to POSIX path of (choose file of type {"public.image"})
set {xNum, yNum} to {0, 0}

set cRes to getColorRGBNumFromImageByPosition(aFile, xNum, yNum) of me
–> {255, 0, 0}

on getColorRGBNumFromImageByPosition(aFilePath, xPos as integer, yPos as integer)
　　set anNSImage to NSImage’s alloc()’s initWithContentsOfFile:aFilePath
　　set aRawimg to NSBitmapImageRep’s imageRepWithData:(anNSImage’s TIFFRepresentation())
　　
　　set aColor to (aRawimg’s colorAtX:xPos y:yPos)
　　set aRed to (aColor’s redComponent()) * 255
　　set aGreen to (aColor’s greenComponent()) * 255
　　set aBlue to (aColor’s blueComponent()) * 255
　　
　　return {aRed as integer, aGreen as integer, aBlue as integer}
end getColorRGBNumFromImageByPosition