Tag: light

/ **
* Function that defines if a color, given the values ​​of the red, green and blue components on a scale of 0 to 1, is clear or dark.
* @param {int} r - Value of the red component on a scale of 0 to 1.
* @param {int} g - Value of the green component on a scale of 0 to 1.
* @param {int} b - Value of the blue component on a scale of 0 to 1.
* /
(), () () () () () () ()
return Math.sqrt (r * r * 0.299 + g * g * 0.587 + b * b * 0.114)> = 0.5;
}

// Map common names of colors. Source: http://www.w3schools.com/cssref/css_colors.asp
: "# FFFFFF", "AQUAMARINE": "# FFFFF", "AQUAMARINE": "# FFFFDF", "AQUAMARINE": "# F00F5DC", "BISQUE": "# FFE4C4", "BLACK": "# 000000" , "BLANCHEDALMOND": "#FFEBCD", "BLUE": "# 0000FF", "BLUEVIOLET": "#" "BOTLY": "# A52A2A", "BURLYWOOD": "# DEB887", "CADETBLUE": "# 5F9EA0 "," CHARTREUSE ":" # 7FFF00 "," CHOCOLATE ":" # D2691E "," CORAL ":" # FF7F50 "," CORNFLOWERBLUE ":" # 6495ED "," CORNSILK ":" # FFF8DC "," CRIMSON ":" # DC143C "," CYAN ":" # 00FFFF "," DARKBLUE ":" # 00008B "" DARKGREEN ":" # 008B8B "," DARKGOLDENROD ":" # B8860B "," DARKGRAY ":" # A9A9A9 " , "DARKGREY": "# A9A9A9", "DARKGREEN": "# 0064B": "# BDB76B", "DARKMAGENTA": "# 8B008B", "DARKOLIVEGREEN": "# 556B2F", "DARKORANGE": "# FF8C00" , "DARKORCHID": "# 9932CC", "DARKRED": "# 8B0000", "DARK", "DARK", "DARK", "DARKS", "DARK", "DARK", "DARK", "DARK" , "DARK" "# 00CED1", "DARKVIOLET": "# 9400D3", "DEEPPINK": "# FF1493", "DEEPSKYBLUE": "# 00BFFF", "DIMGRAY": "# 696969", "DIMGREY": " # 696969 "," DODGERBLUE ":" # 1E90FF "," FIREBRICK ":" # B22222 "," F LORALWHITE ":" "" FF00FF "," GHOSTWHITE "," GHOSTWHITE "," GHOSTWHITE ":" # F8F8FF "," GOLD ":" # FF00FF "," GFOS "" GOLDENROD ":" # DAA520 "," GRAY " : "# 808080", "GRAY": "# 808080", "GREEN": "# 008000", "GREENYELLOW": "# ADFF2F", "HONEYDEW": "" # FBB "," DIVISION ":" # FBB "," INDIVIDUAL ":" # FB "," INDICATOR "" LAVENDERBLUSH ":" # FFF0F5 "," LAWNGREEN ":" # 7CFC00 "," LEMONCHIFFON ":" #FFFACD "," LIGHTBLUE ":" # ADD8E6 ", "LIGHTCORAL": "#" "LIGHTGREEN", "LIGHTGREEN", "LIGHTGREEN", "LIGHTGREEN", "LIGHTGREEN": "# D2D3D3": "# FFB6C1", "LIGHTSALMON": "# FFA07A", "LIGHTSEAGREEN": "# 20B2AA", "LIGHTSKYBLUE": "# 87CEFA", "LIGHTSLATEGRAY": "# 778899", "LIGHTSLATEGREY": "# 778899" "," LIGHTSTEELBLUE ":" # B0C4DE "," LIGHTYELLOW ":" #FFFFE 0 "," LIME ":" # 00FF00 "," LIMEGREEN ":" # 32CD32 "," LINEN ":" # FAF0E6 "," MAGENTA ":" # FF00FF "," MAROON ":" # 800000 "," MEDIUMAQUAMARINE: "# 66CDAA", "MEDIUMBLUE": "# 0000CD", "MEDIUMORCHID": "# BA55D3", "MEDIUMPURPLE": "# 9370DB", "MEDIUMSEAGREEN": "# 3CB371", " MEDIUMSLATEBLUE ":" # 7B68EEE "", "MEDIUMSPRINGGREEN": "# 00FA9A", "MEDIUMTURQUOISE": "# 48D1CC", "MEDIUMVIOLETRED": "# C71585", "MIDNIGHTBLUE": "# 191970", "MINTCREAM": " # F5FFFA "," MISTYROSE ":" # FFE4E1 "," MOCCASIN ":" # FFE4B5 "," NAVAJOWHITE ":" #FFDEAD "," NAVY ":" # 000080 "," OLDLACE ":" # FDF5E6 "," OLIVE ":" # 808000 "," OLIVEDRAB ":" # 6B8E23 "," ORANGE ":" # FFA500 "," ORANGERED ":" # FF4500 "," ORCHID ":" # DA70D6 "," PALEGOLDENROD ":" # EEE8AA "," PALEGREEN ":": "# FFEFD5", "PEACHPUFF": "# FFDAB9", "PERU": "# CD853F": "# FFEFD5", "PF", "MOVIE" "PINK": "# FFC0CB "," PLUM ":" # DDA0DD "," POWDERBLUE ":" # B0E0E6 "," PURPLE ":" # 800080 "," REBECCAPURPLE ":" # 663399 "," RED ":" # "# FF0000", "ROSYBROWN": "# BC8F8F", "ROYALBLUE": "# 4169E1", "" SADDLEBROWN ":" # 2B4513 "," SALMON ":" # FA8072 "," SANDYBROWN ":" # F4A460 "," SEAGREEN ": "# 2E8B57", "SEASHELL": "# FFF5EE", "SIENNA": "": "# 708090", "SLATBLRE": "# 708090", "SLATBLRE": "# 708090", "SLATBLRE": "# 708090 "," SLATBLRE "" SNO W ":" #FFFAFA "," SPRINGGREEN ":" # 00FF7F "," STEELBLUE ":" # 4682B4 "," SO ":" # D2B48C "," TEAL ":" # 008080 "," THISTLE ":" # : "D", "TOMATO": "# FF6347", "TURQUOISE": "# 40E0D0", "VIOLET": "# EE82EE", "WHEAT": "# F5DEB3", "WHITE": "#FFFFFF", "WHITESMOKE" ":" # F5F5F5 "," YELLOW ":" # FFFF00 "," YELLOWGREEN ":" # 9ACD32 "};

/ **
* Function that defines if a color, given its name, is light or dark.
In the event that the name of the color, it may have one of the following formats: & # 39; # abcdef & # 39 ;, & # 39; # abc & # 39 ;, & # 39; rgb (a, b, c) & # 39 ;, & # 39; rgba (a, b, c) & # 39 ;, or be a common color name, such as & # 39; network & # 39; or & # 39; yellow & # 39 ;.
* /
color function Clara (color) {
var r, g, b;
test {
var rgb = color.trim (). toUpperCase ();
(colorMap[rgb]) rgb = colorMap[rgb];
if (rgb.startsWith ("#") && rgb.length === 7) {
r = parseInt (rgb.substring (1, 3), 16) / 255;
g = parseInt (rgb.substring (3, 5), 16) / 255;
b = parseInt (rgb.substring (5, 7), 16) / 255;
} else if (rgb.startsWith ("#") && rgb.length === 4) {
r = parseInt (rgb.substring (1, 2), 16) * 17/255;
g = parseInt (rgb.substring (2, 3), 16) * 17/255;
b = parseInt (rgb.substring (3, 4), 16) * 17/255;
} else if (rgb.startsWith ("RGB") && rgb.endsWith (")")) {
rgb = rgb.substring (3);
var a = rgb.charAt (0) === & # 39; A & # 39 ;;
yes (a) RGB = rgb.substring (1);
rgb = rgb.trim ();
if (! rgb.startsWith ("(")) throw new error ();
rgb = rgb.substring (1, rgb.length - 1);
var x = rgb.split (& # 39;, & # 39;);
if (x.length! == (a? 4: 3)) throw new error ();
r = parseInt (x)[0].trim ());
g = parseInt (x)[1].trim ());
b = parseInt (x)[2].trim ());
aa = a? parseFloat (x[3].trim ()): 0.0;
(isNaN (r) || isNaN (g) || isNaN (b) || isNaN (a) || r < 0 || r > 255 || g < 0 || g > 255 || b < 0 || b > 255 || aa < 0.0 || aa > 1.0) throw new error ();
r / = 255;
g / = 255;
b / = 255;
}} else {
returns a new error ();
}
return colorClaraRgb (r, g, b);
} catch (x) {
the new error ("Color") + color + "has not been recognized.
}
}

// Test
test function (x) {
test {
document.write ("Color" + x + "& # 39; is a color" + (colorClare (x)? "light": "dark") + ".
");
} catch (e) {
document.write (e.message + "
");
}
}

document.write ("
These colors must be valid
");
Test ("# 102030");
test ("# 0000ff");
test ("# 00f");
Test ("# 00ff00");
Test ("# FF00FF");
Test ("# 808080");
Test ("# 888");
test ("#ffffff");
test ("# fff");
Test ("# 000000");
Test ("# 000");
test ("# a000A0");
Test ("# A0A");
test ("yellow");
test ("blue");
test ("Powderblue");
test ("rgb (20, 40, 60)");
test ("rgb (100, 180, 250)");
test ("rgb (100, 180, 250)");
test ("rgb (255, 255, 255)");
test ("rgba (20, 40, 60, 0.4)");
test ("rgba (100, 180, 250, 0.7)");
test ("rgba (100, 180, 250, 0.9)");
test ("rgba (255, 255, 255, 0.33)");

document.write ("
These colors must all be invalid
");
test ("lol");
test ("donkey color when he flees");
test ("rgba (255, 255, 255)");
test ("rgb (255, 255, 255, 255)");
("rgb (255, 255)");
test ("rgba (255, 255, 255, 0, 0)");
test ("rgb (256, 0, 0)");
test ("rgb (-1, 0, 0)");
test ("rgba (256, 0, 0, 0.0)");
test ("rgba (-1, 0, 0, 0.0)");
test ("rgba (255, 0, 0, -1.0)");
test ("rgba (255, 0, 0, 1.1)");
test ({});
Test (1245);
test ([]);
test (undefined);
test (null);