CSS147色をHSVの順番で並べてみる。
CSS147色を並べる – wonderfl build flash online
プログラムで色を出すときには、RGBの方が扱いやすいんだけど、「もうちょっと明るい色」みたいに調整する時にはHSVでの値指定の方が明らかに扱いやすい。
ちょっとはHSVに慣れておいた方がいいかなと思っていじってみた。
調べていくと色を扱うのは、不合理なところが多いのでめんどくさかったり、面白かったりする。
今回扱ったCSS147色では白系が多すぎる気がするし、名前は違うのに同じ色を指していたり、grayとgreyが混在していて、文化というか歴史的経緯の塊であることがわかる。
でも、コンピューターで色を扱うこと自体に、妥協というか限界があったりもするのでしょうがないよね、という気もしてくる。そもそも人間の光の感じ方が不均一だったり、人によって違っている。人間が使うものだから、文化に規定されるのは当たり前の話だ。
ところで、当初このコードでやりたかったのは、そんな話じゃなくて、構造体の使い方だったりする。
よく、命名規則の話で（アプリケーション）ハンガリアン記法の例として、priceDolとpriceYenを足すようなことを防止するため、という例が出てくる。もちろんそれは良いと思うけど、そもそもDolクラスやYenクラスでしかお金を扱えないようにしておけば、足すような事故が起きない。
RGBを例として作り出した、はずなのにぜんぜん違うものになってしまった（RGBColorクラス辺りがその残骸）。まあ、その不合理なところが面白い、はず。
参考
Converting between RGB and HSV color space
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package { import flash.display.Sprite; import flash.events.Event; /** * ... * @author umhr */ [SWF(width = 465, height = 465, backgroundColor = 0x777777, frameRate = 30)] public class WonderflMain extends Sprite { public function WonderflMain():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point graphics.beginFill(0x777777); graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight); graphics.endFill(); addChild(new ColorCanvas()); } } } import a24.tween.Ease24; import a24.tween.Tween24; import com.bit101.components.RadioButton; import com.bit101.components.Style; import flash.display.Sprite; import flash.events.Event; import flash.events.MouseEvent; import flash.filters.DropShadowFilter; import flash.geom.Point; /** * ... * @author umhr */ class ColorCanvas extends Sprite { private var _centerInformation:CenterInformation = new CenterInformation(); private var _colorChipList:Vector.<ColorChip> = new Vector.<ColorChip>(); private var _currentRadio:String; public function ColorCanvas() { init(); } private function init():void { if (stage) onInit(); else addEventListener(Event.ADDED_TO_STAGE, onInit); } private function onInit(event:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, onInit); // entry point var rgbColorList:Vector.<RGBColor> = ColorPalette.rgbColorList; _centerInformation.x = stage.stageWidth * 0.5; _centerInformation.y = stage.stageHeight * 0.5; addChild(_centerInformation); var n:int = rgbColorList.length; for (var i:int = 0; i < n; i++) { addColorCircle(rgbColorList[i]); } setPosition("Hue"); addRadioButton(); stage.addEventListener(MouseEvent.MOUSE_MOVE, stage_mouseMove); } private function addRadioButton():void { Style.embedFonts = false; Style.fontSize = 12; Style.BACKGROUND = 0xFF0000; Style.LABEL_TEXT = 0xFFFFFF; new RadioButton(this, 8, 10, "Hue(色相)", true, onRadio); new RadioButton(this, 8, 30, "Saturation(彩度)", false, onRadio); new RadioButton(this, 8, 50, "Value(明度)", false, onRadio); new RadioButton(this, 8, 70, "Name", false, onRadio); } private function onRadio(event:MouseEvent):void { var radioButton:RadioButton = event.target as RadioButton; var name:String = radioButton.label; name = name.split("(")[0]; setPosition(name); } private function stage_mouseMove(e:MouseEvent):void { var object:* = getObjectsUnderPoint(new Point(mouseX, mouseY)).pop(); if (object == "[object ColorChip]") { var n:int = _colorChipList.length; for (var i:int = 0; i < n; i++) { _colorChipList[i].filters = []; } var colorChip:ColorChip = object as ColorChip; colorChip.filters = [new DropShadowFilter(0)]; var rgbColor:RGBColor = colorChip.rgbColor; _centerInformation.setRGBColor(rgbColor); } } private function addColorCircle(rgbColor:RGBColor):void { var colorChip:ColorChip = new ColorChip(rgbColor); colorChip.x = stage.stageWidth * 0.5; colorChip.y = stage.stageHeight * 0.5; addChild(colorChip); _colorChipList.push(colorChip); } private function setPosition(name:String):void { if (_currentRadio == name) { return; } _currentRadio = name; var colorChip:ColorChip; var d:Number; var n:int = _colorChipList.length; var num:Number; var indexList:Vector.<int> = ColorPalette["indexListBy" + name]; var tweenList:Array/*Tween24*/ = []; var k:int; for (var i:int = 0; i < n; i++) { d = i % 3; num = i / n; k = indexList[i]; tweenList[i] = Tween24.tween(_colorChipList[k], 0.5, Ease24._2_QuadOut); tweenList[i].x(stage.stageWidth * 0.5 + Math.cos(num * 2 * Math.PI) * (170 + d * 22)); tweenList[i].y(stage.stageHeight * 0.5 + Math.sin(num * 2 * Math.PI) * (170 + d * 22)); tweenList[i].delay(d * 0.1); } Tween24.parallel.apply(null, tweenList).play(); } } import flash.display.Sprite; import flash.events.Event; import flash.filters.DropShadowFilter; import flash.text.TextField; import flash.text.TextFormat; import flash.text.TextFormatAlign; /** * ... * @author umhr */ class CenterInformation extends Sprite { public var _textField:TextField = new TextField(); public function CenterInformation() { init(); } private function init():void { if (stage) onInit(); else addEventListener(Event.ADDED_TO_STAGE, onInit); } private function onInit(event:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, onInit); // entry point addTextField(); } private function addTextField():void { var textFormat:TextFormat = new TextFormat("_sans", 12, 0xFFFFFF); textFormat.align = TextFormatAlign.CENTER; _textField.defaultTextFormat = textFormat; _textField.text = "\n\n\n\n"; _textField.wordWrap = true; _textField.multiline = true; _textField.width = 200; _textField.autoSize = "center"; _textField.x = -_textField.width * 0.5; _textField.y = -_textField.height * 0.5; _textField.filters = [new DropShadowFilter(0, 0, 0x000000, 1, 4, 4, 2)]; addChild(_textField); } public function setRGBColor(rgbColor:RGBColor):void { graphics.clear(); graphics.beginFill(rgbColor.rgb); graphics.drawCircle(0, 0, 100); graphics.endFill(); var text:String = ""; text += "Name:" + rgbColor.name + "\n"; text += "RGB:0x" + rgbColor.rgb.toString(16).toUpperCase() + "\n"; text += "Hue:" + Math.floor(rgbColor.hue) + "\n"; text += "Saturation:" + Math.floor(rgbColor.saturation) + "\n"; text += "Value:" + Math.floor(rgbColor.value) + "\n"; _textField.text = text; } } /** * CSS色 * http://www.color-sample.com/popular/htmlcolor/ * ... * @author umhr */ class ColorPalette { static public const ALICE_BLUE:int = 0xF0F8FF; static public const ANTIQUE_WHITE:int = 0xFAEBD7; static public const AQUA:int = 0x00FFFF; static public const AQUAMARINE:int = 0x7FFFD4; static public const AZURE:int = 0xF0FFFF; static public const BEIGE:int = 0xF5F5DC; static public const BISQUE:int = 0xFFE4C4; static public const BLACK:int = 0x000000; static public const BLANCHED_ALMOND:int = 0xFFEBCD; static public const BLUE:int = 0x0000FF; static public const BLUE_VIOLET:int = 0x8A2BE2; static public const BRASS:int = 0xB5A642; static public const BROWN:int = 0xA52A2A; static public const BURLY_WOOD:int = 0xDEB887; static public const CADET_BLUE:int = 0x5F9EA0; static public const CHARTREUSE:int = 0x7FFF00; static public const CHOCOLATE:int = 0xD2691E; static public const COOLCOPPER:int = 0xD98719; static public const COPPER:int = 0xBF00DF; static public const CORAL:int = 0xFF7F50; static public const CORNFLOWER:int = 0xBFEFDF; static public const CORNFLOWER_BLUE:int = 0x6495ED; static public const CORNSILK:int = 0xFFF8DC; static public const CRIMSON:int = 0xDC143C; static public const CYAN:int = 0x00FFFF; static public const DARK_BLUE:int = 0x00008B; static public const DARK_BROWN:int = 0xDA0B00; static public const DARK_CYAN:int = 0x008B8B; static public const DARK_GOLDENROD:int = 0xB8860B; static public const DARK_GRAY:int = 0xA9A9A9; static public const DARK_GREEN:int = 0x006400; static public const DARK_KHAKI:int = 0xBDB76B; static public const DARK_MAGENTA:int = 0x8B008B; static public const DARK_OLIVE_GREEN:int = 0x556B2F; static public const DARK_ORANGE:int = 0xFF8C00; static public const DARK_ORCHID:int = 0x9932CC; static public const DARK_RED:int = 0x8B0000; static public const DARK_SALMON:int = 0xE9967A; static public const DARK_SEA_GREEN:int = 0x8FBC8F; static public const DARK_SLATE_BLUE:int = 0x483D8B; static public const DARK_SLATE_GRAY:int = 0x2F4F4F; static public const DARK_TURQUOISE:int = 0x00CED1; static public const DARK_VIOLET:int = 0x9400D3; static public const DEEP_PINK:int = 0xFF1493; static public const DEEP_SKY_BLUE:int = 0x00BFFF; static public const DIM_GRAY:int = 0x696969; static public const DODGER_BLUE:int = 0x1E90FF; static public const FELDSPER:int = 0xFED0E0; static public const FIRE_BRICK:int = 0xB22222; static public const FLORAL_WHITE:int = 0xFFFAF0; static public const FOREST_GREEN:int = 0x228B22; static public const FUCHSIA:int = 0xFF00FF; static public const GAINSBORO:int = 0xDCDCDC; static public const GHOST_WHITE:int = 0xF8F8FF; static public const GOLD:int = 0xFFD700; static public const GOLDENROD:int = 0xDAA520; static public const GRAY:int = 0x808080; static public const GREEN:int = 0x008000; static public const GREEN_YELLOW:int = 0xADFF2F; static public const HONEYDEW:int = 0xF0FFF0; static public const HOT_PINK:int = 0xFF69B4; static public const INDIAN_RED:int = 0xCD5C5C; static public const INDIGO:int = 0x4B0082; static public const IVORY:int = 0xFFFFF0; static public const KHAKI:int = 0xF0E68C; static public const LAVENDER:int = 0xE6E6FA; static public const LAVENDER_BLUSH:int = 0xFFF0F5; static public const LAWN_GREEN:int = 0x7CFC00; static public const LEMON_CHIFFON:int = 0xFFFACD; static public const LIGHT_BLUE:int = 0xADD8E6; static public const LIGHT_CORAL:int = 0xF08080; static public const LIGHT_CYAN:int = 0xE0FFFF; static public const LIGHT_GOLDENROD_YELLOW:int = 0xFAFAD2; static public const LIGHT_GREEN:int = 0x90EE90; static public const LIGHT_GREY:int = 0xD3D3D3; static public const LIGHT_PINK:int = 0xFFB6C1; static public const LIGHT_SALMON:int = 0xFFA07A; static public const LIGHT_SEA_GREEN:int = 0x20B2AA; static public const LIGHT_SKY_BLUE:int = 0x87CEFA; static public const LIGHT_SLATE_GRAY:int = 0x778899; static public const LIGHT_STEEL_BLUE:int = 0xB0C4DE; static public const LIGHT_YELLOW:int = 0xFFFFE0; static public const LIME:int = 0x00FF00; static public const LIME_GREEN:int = 0x32CD32; static public const LINEN:int = 0xFAF0E6; static public const MAGENTA:int = 0xFF00FF; static public const MAROON:int = 0x800000; static public const MEDIUM_AQUAMARINE:int = 0x66CDAA; static public const MEDIUM_BLUE:int = 0x0000CD; static public const MEDIUM_ORCHID:int = 0xBA55D3; static public const MEDIUM_PURPLE:int = 0x9370DB; static public const MEDIUM_SEA_GREEN:int = 0x3CB371; static public const MEDIUM_SLATE_BLUE:int = 0x7B68EE; static public const MEDIUM_SPRING_GREEN:int = 0x00FA9A; static public const MEDIUM_TURQUOISE:int = 0x48D1CC; static public const MEDIUM_VIOLET_RED:int = 0xC71585; static public const MIDNIGHT_BLUE:int = 0x191970; static public const MINT_CREAM:int = 0xF5FFFA; static public const MISTY_ROSE:int = 0xFFE4E1; static public const MOCCASIN:int = 0xFFE4B5; static public const NAVAJO_WHITE:int = 0xFFDEAD; static public const NAVY:int = 0x000080; static public const OLD_LACE:int = 0xFDF5E6; static public const OLIVE:int = 0x808000; static public const OLIVE_DRAB:int = 0x6B8E23; static public const ORANGE:int = 0xFFA500; static public const ORANGE_RED:int = 0xFF4500; static public const ORCHID:int = 0xDA70D6; static public const PALE_GOLDENROD:int = 0xEEE8AA; static public const PALE_GREEN:int = 0x98FB98; static public const PALE_TURQUOISE:int = 0xAFEEEE; static public const PALE_VIOLET_RED:int = 0xDB7093; static public const PAPAYA_WHIP:int = 0xFFEFD5; static public const PEACH_PUFF:int = 0xFFDAB9; static public const PERU:int = 0xCD853F; static public const PINK:int = 0xFFC0CB; static public const PLUM:int = 0xDDA0DD; static public const POWDER_BLUE:int = 0xB0E0E6; static public const PURPLE:int = 0x800080; static public const RED:int = 0xFF0000; static public const RICHBLUE:int = 0x0CB0E0; static public const ROSY_BROWN:int = 0xBC8F8F; static public const ROYAL_BLUE:int = 0x4169E1; static public const SADDLE_BROWN:int = 0x8B4513; static public const SALMON:int = 0xFA8072; static public const SANDY_BROWN:int = 0xF4A460; static public const SEA_GREEN:int = 0x2E8B57; static public const SEASHELL:int = 0xFFF5EE; static public const SIENNA:int = 0xA0522D; static public const SILVER:int = 0xC0C0C0; static public const SKY_BLUE:int = 0x87CEEB; static public const SLATE_BLUE:int = 0x6A5ACD; static public const SLATE_GRAY:int = 0x708090; static public const SNOW:int = 0xFFFAFA; static public const SPRING_GREEN:int = 0x00FF7F; static public const STEEL_BLUE:int = 0x4682B4; static public const TAN:int = 0xD2B48C; static public const TEAL:int = 0x008080; static public const THISTLE:int = 0xD8BFD8; static public const TOMATO:int = 0xFF6347; static public const TURQUOISE:int = 0x40E0D0; static public const VIOLET:int = 0xEE82EE; static public const WHEAT:int = 0xF5DEB3; static public const WHITE:int = 0xFFFFFF; static public const WHITE_SMOKE:int = 0xF5F5F5; static public const YELLOW:int = 0xFFFF00; static public const YELLOW_GREEN:int = 0x9ACD32; /** * 名前順リスト */ static public const NAME_LIST:Vector.<String> = Vector.<String>(["ALICE_BLUE", "ANTIQUE_WHITE", "AQUA", "AQUAMARINE", "AZURE", "BEIGE", "BISQUE", "BLACK", "BLANCHED_ALMOND", "BLUE", "BLUE_VIOLET", "BRASS", "BROWN", "BURLY_WOOD", "CADET_BLUE", "CHARTREUSE", "CHOCOLATE", "COOLCOPPER", "COPPER", "CORAL", "CORNFLOWER", "CORNFLOWER_BLUE", "CORNSILK", "CRIMSON", "CYAN", "DARK_BLUE", "DARK_BROWN", "DARK_CYAN", "DARK_GOLDENROD", "DARK_GRAY", "DARK_GREEN", "DARK_KHAKI", "DARK_MAGENTA", "DARK_OLIVE_GREEN", "DARK_ORANGE", "DARK_ORCHID", "DARK_RED", "DARK_SALMON", "DARK_SEA_GREEN", "DARK_SLATE_BLUE", "DARK_SLATE_GRAY", "DARK_TURQUOISE", "DARK_VIOLET", "DEEP_PINK", "DEEP_SKY_BLUE", "DIM_GRAY", "DODGER_BLUE", "FELDSPER", "FIRE_BRICK", "FLORAL_WHITE", "FOREST_GREEN", "FUCHSIA", "GAINSBORO", "GHOST_WHITE", "GOLD", "GOLDENROD", "GRAY", "GREEN", "GREEN_YELLOW", "HONEYDEW", "HOT_PINK", "INDIAN_RED", "INDIGO", "IVORY", "KHAKI", "LAVENDER", "LAVENDER_BLUSH", "LAWN_GREEN", "LEMON_CHIFFON", "LIGHT_BLUE", "LIGHT_CORAL", "LIGHT_CYAN", "LIGHT_GOLDENROD_YELLOW", "LIGHT_GREEN", "LIGHT_GREY", "LIGHT_PINK", "LIGHT_SALMON", "LIGHT_SEA_GREEN", "LIGHT_SKY_BLUE", "LIGHT_SLATE_GRAY", "LIGHT_STEEL_BLUE", "LIGHT_YELLOW", "LIME", "LIME_GREEN", "LINEN", "MAGENTA", "MAROON", "MEDIUM_AQUAMARINE", "MEDIUM_BLUE", "MEDIUM_ORCHID", "MEDIUM_PURPLE", "MEDIUM_SEA_GREEN", "MEDIUM_SLATE_BLUE", "MEDIUM_SPRING_GREEN", "MEDIUM_TURQUOISE", "MEDIUM_VIOLET_RED", "MIDNIGHT_BLUE", "MINT_CREAM", "MISTY_ROSE", "MOCCASIN", "NAVAJO_WHITE", "NAVY", "OLD_LACE", "OLIVE", "OLIVE_DRAB", "ORANGE", "ORANGE_RED", "ORCHID", "PALE_GOLDENROD", "PALE_GREEN", "PALE_TURQUOISE", "PALE_VIOLET_RED", "PAPAYA_WHIP", "PEACH_PUFF", "PERU", "PINK", "PLUM", "POWDER_BLUE", "PURPLE", "RED", "RICHBLUE", "ROSY_BROWN", "ROYAL_BLUE", "SADDLE_BROWN", "SALMON", "SANDY_BROWN", "SEA_GREEN", "SEASHELL", "SIENNA", "SILVER", "SKY_BLUE", "SLATE_BLUE", "SLATE_GRAY", "SNOW", "SPRING_GREEN", "STEEL_BLUE", "TAN", "TEAL", "THISTLE", "TOMATO", "TURQUOISE", "VIOLET", "WHEAT", "WHITE", "WHITE_SMOKE", "YELLOW", "YELLOW_GREEN"]); static private var _rgbColorList:Vector.<RGBColor>; static private var _rgbListByName:Vector.<int>; static private var _rgbListByValue:Vector.<int>; static private var _rgbListBySaturation:Vector.<int>; static private var _rgbListByHue:Vector.<int>; static private var _indexListByValue:Vector.<int>; static private var _indexListBySaturation:Vector.<int>; static private var _indexListByHue:Vector.<int>; static private var _indexListByName:Vector.<int>; /** * 明度順リスト */ static public function get rgbListByName():Vector.<int> { if (_rgbListByName) { return _rgbListByName; } var n:int = rgbColorList.length; _rgbListByName = new Vector.<int>(n, true); _indexListByName = new Vector.<int>(n, true); for (var i:int = 0; i < n; i++) { _rgbListByName[i] = _rgbColorList[i].rgb; _indexListByName[i] = i; } return _rgbListByName; } static public function get rgbListByValue():Vector.<int> { if (_rgbListByValue) { return _rgbListByValue; } return setList(_rgbListByValue, "value", "_indexListByValue"); } static public function get rgbListByHue():Vector.<int> { if (_rgbListByHue) { return _rgbListByHue; } return setList(_rgbListByHue, "hue", "_indexListByHue"); } static public function get rgbListBySaturation():Vector.<int> { if (_rgbListBySaturation) { return _rgbListBySaturation; } return setList(_rgbListBySaturation, "saturation", "_indexListBySaturation"); } static private function setList(list:Vector.<int>, prop:String, indexName:String):Vector.<int> { var valueList:Array = []; var indexList:Vector.<int>; var n:int = rgbColorList.length; for (var i:int = 0; i < n; i++) { valueList[i] = _rgbColorList[i][prop]; } indexList = Vector.<int>(valueList.sort(Array.NUMERIC | Array.RETURNINDEXEDARRAY)); list = new Vector.<int>(n, true); for (i = 0; i < n; i++) { list[i] = _rgbColorList[indexList[i]].rgb; } ColorPalette[indexName] = indexList; return list; } static public function get rgbColorList():Vector.<RGBColor> { if (_rgbColorList) { return _rgbColorList; } var n:int = NAME_LIST.length; _rgbColorList = new Vector.<RGBColor>(n, true); for (var i:int = 0; i < n; i++) { _rgbColorList[i] = new RGBColor(ColorPalette[NAME_LIST[i]]); _rgbColorList[i].name = NAME_LIST[i]; } return _rgbColorList; } static public function get indexListByHue():Vector.<int> { if (!_indexListByHue) { rgbListByHue; } return _indexListByHue; } static public function get indexListByName():Vector.<int> { if (!_indexListByName) { rgbListByName; } return _indexListByName; } static public function get indexListBySaturation():Vector.<int> { if (!_indexListBySaturation) { rgbListBySaturation; } return _indexListBySaturation; } static public function get indexListByValue():Vector.<int> { if (!_indexListByValue) { rgbListByValue; } return _indexListByValue; } public function ColorPalette() { } } import flash.display.Sprite; /** * ... * @author umhr */ class ColorChip extends Sprite { public var rgbColor:RGBColor; public function ColorChip(rgbColor:RGBColor) { this.rgbColor = rgbColor; name = rgbColor.name; init(); } private function init():void { graphics.beginFill(rgbColor.rgb); //graphics.drawRect(-28, -3, 56, 6); graphics.drawCircle(0, 0, 10); graphics.endFill(); } } import flash.geom.ColorTransform; /** * Converting between RGB and HSV color space * RGBとHSVの相互変換 * http://www.technotype.net/tutorial/tutorial.php?fileId=%7BImage%20processing%7D§ionId=%7B-converting-between-rgb-and-hsv-color-space%7D * ... * @author umhr */ class RGBColor { private var _alpha:Number; private var _a:int; public var red:int; public var green:int; public var blue:int; public var hue:Number; public var saturation:Number; public var value:Number; private var _rgb:int; public var name:String; public function RGBColor(rgb:int = NaN) { if (!isNaN(rgb)) { this.rgb = rgb; } } private function setHSV():void { var max:int = Math.max(red, green, blue); var min:int = Math.min(red, green, blue); // h if(max == min){ hue = 0; } else if(max == red){ hue = (60 * (green - blue) / (max - min) + 360) % 360; } else if(max == green){ hue = (60 * (blue - red) / (max - min)) + 120; } else if(max == blue){ hue = (60 * (red - green) / (max - min)) + 240; } // s if(max == 0){ saturation = 0; } else{ saturation = (255 * ((max - min) / max)); } // v value = max; } public function setByHSV(hue:int, saturation:int, value:int):void { this.hue = hue; this.saturation = saturation; this.value = value; var i:int = Math.floor(hue / 60) % 6; var f:Number = (hue / 60) - Math.floor(hue / 60); var p:int = Math.round(value * (1 - (saturation / 255))); var q:int = Math.round(value * (1 - (saturation / 255) * f)); var t:int = Math.round(value * (1 - (saturation / 255) * (1 - f))); switch(i){ case 0 : red = value; green = t; blue = p; break; case 1 : red = q; green = value; blue = p; break; case 2 : red = p; green = value; blue = t; break; case 3 : red = p; green = q; blue = value; break; case 4 : red = t; green = p; blue = value; break; case 5 : red = value; green = p; blue = q; break; } rgb = ColorUtils.rgbCombination(red, green, blue); } public function toString(radix:* = 10):String { return rgb.toString(radix); } /** * 0～1の値を返します。 */ public function get alpha():Number { return _alpha; } public function set alpha(value:Number):void { _alpha = value; _a = value * 255; } /** * 0～255の値を返します。 */ public function get a():int { return _a; } public function set a(value:int):void { _a = value; _alpha = value / 255; } public function get rgb():int { return _rgb; } public function set rgb(value:int):void { _rgb = value; red = value >> 16 & 0xFF; green = value >> 8 & 0xFF; blue = value & 0xFF; setHSV(); } } import flash.geom.ColorTransform; /** * ... * @author umhr */ class ColorUtils { public function ColorUtils() { } static public function colorTransform(rgb:int):ColorTransform { var colorTransform:ColorTransform = new ColorTransform(); colorTransform.redMultiplier = colorTransform.blueMultiplier = colorTransform.greenMultiplier = 0; colorTransform.redOffset = rgb >> 16;//16bit右にずらす。 colorTransform.greenOffset = rgb >> 8 & 0xff;//8bit右にずらして、下位8bitのみを取り出す。 colorTransform.blueOffset = rgb & 0xff;//下位8bitのみを取り出す。 return colorTransform; } static public function rgbCombination(red:int, green:int, blue:int):int { return red << 16 | green << 8 | blue; } /** * rgbをargbにして返します。 * @param rgb * @param alpha * @return */ static public function addAlpha(rgb:uint, alpha:int = 0xFF):uint { return alpha << 24 | rgb; } static public function removeAlpha(argb:uint):int { return argb & 0xFFFFFF; } static public function rgbSeparater(rgb:int):Vector.<int> { return Vector.<int>([rgb >> 16 & 0xFF, rgb >> 8 & 0xFF, rgb & 0xFF]); } static public function rgbSeparaterArray(rgb:int):Array { return [rgb >> 16 & 0xFF, rgb >> 8 & 0xFF, rgb & 0xFF]; } static public function rgbSeparaters(rgb:int, r:int, g:int, b:int):void { r = rgb >> 16 & 0xFF; g = rgb >> 8 & 0xFF; b = rgb & 0xFF; } /** * フィールドカラーに変色します. * 6桁16進数から、2桁ぶんずつを取り出す。 * 色情報は24bit。r8bit+g8bit+b8bit。24桁の二進数 * @param rgb * @param ratio * @return */ static public function colorTransformFromRGB(rgb:int, ratio:Number = 1):ColorTransform { //ratioが1以外の場合、明度変更関数へ if(ratio != 1){rgb = rgbBrightness(rgb,ratio)}; var color:ColorTransform = new ColorTransform(); color.redMultiplier = color.blueMultiplier = color.greenMultiplier = 0; color.redOffset = rgb >> 16;//16bit右にずらす。 color.greenOffset = rgb >> 8 & 0xff;//8bit右にずらして、下位8bitのみを取り出す。 color.blueOffset = rgb & 0xff;//下位8bitのみを取り出す。 return color; } /** * 色の明度を相対的に変える関数。 * rgb値と割合を与えて、結果を返す。 * rgbは、0xffffff段階の値。 * ratioが0の時に0x000000に、1の時にそのまま、2の時には0xffffffになる。 * 相対的に、ちょっと暗くしたい時には、ratioを0.8に、 * ちょっと明るくしたい時にはratioを1.2などに設定する。 */ static public function rgbBrightness(rgb:int, ratio:Number):int { if(ratio < 0 || 2 < ratio){ratio = 1;trace("function colorBrightness 範囲外")} var _r:int = rgb >> 16;//16bit右にずらす。 var _g:int = rgb >> 8 & 0xff;//8bit右にずらして、下位8bitのみを取り出す。 var _b:int = rgb & 0xff;//下位8bitのみを取り出す。 if(ratio <= 1){ _r *= ratio; _g *= ratio; _b *= ratio; }else{ _r = (255 - _r)*(ratio-1)+_r; _g = (255 - _g)*(ratio-1)+_g; _b = (255 - _b)*(ratio-1)+_b; } return _r << 16 | _g << 8 | _b; } } |
