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-<?php
-//=======================================================================
-// File: JPGRAPH_RGB.INC.PHP
-// Description: Class to handle RGb color space specification and
-// named colors
-// Created: 2001-01-08 (Refactored to separate file 2008-08-01)
-// Ver: $Id: jpgraph_rgb.inc.php 1893 2009-10-02 23:15:25Z ljp $
-//
-// Copyright (c) Asial Corporation. All rights reserved.
-//========================================================================
-
-
-/*===================================================
-// CLASS RGB
-// Description: Color definitions as RGB triples
-//===================================================
-*/
-
-class RGB {
- public $rgb_table;
- public $img;
-
- function __construct($aImg=null) {
- $this->img = $aImg;
-
- // Conversion array between color names and RGB
- $this->rgb_table = array(
- 'aqua'=> array(0,255,255),
- 'lime'=> array(0,255,0),
- 'teal'=> array(0,128,128),
- 'whitesmoke'=>array(245,245,245),
- 'gainsboro'=>array(220,220,220),
- 'oldlace'=>array(253,245,230),
- 'linen'=>array(250,240,230),
- 'antiquewhite'=>array(250,235,215),
- 'papayawhip'=>array(255,239,213),
- 'blanchedalmond'=>array(255,235,205),
- 'bisque'=>array(255,228,196),
- 'peachpuff'=>array(255,218,185),
- 'navajowhite'=>array(255,222,173),
- 'moccasin'=>array(255,228,181),
- 'cornsilk'=>array(255,248,220),
- 'ivory'=>array(255,255,240),
- 'lemonchiffon'=>array(255,250,205),
- 'seashell'=>array(255,245,238),
- 'mintcream'=>array(245,255,250),
- 'azure'=>array(240,255,255),
- 'aliceblue'=>array(240,248,255),
- 'lavender'=>array(230,230,250),
- 'lavenderblush'=>array(255,240,245),
- 'mistyrose'=>array(255,228,225),
- 'white'=>array(255,255,255),
- 'black'=>array(0,0,0),
- 'darkslategray'=>array(47,79,79),
- 'dimgray'=>array(105,105,105),
- 'slategray'=>array(112,128,144),
- 'lightslategray'=>array(119,136,153),
- 'gray'=>array(190,190,190),
- 'lightgray'=>array(211,211,211),
- 'midnightblue'=>array(25,25,112),
- 'navy'=>array(0,0,128),
- 'indigo'=>array(75,0,130),
- 'electricindigo'=>array(102,0,255),
- 'deepindigo'=>array(138,43,226),
- 'pigmentindigo'=>array(75,0,130),
- 'indigodye'=>array(0,65,106),
- 'cornflowerblue'=>array(100,149,237),
- 'darkslateblue'=>array(72,61,139),
- 'slateblue'=>array(106,90,205),
- 'mediumslateblue'=>array(123,104,238),
- 'lightslateblue'=>array(132,112,255),
- 'mediumblue'=>array(0,0,205),
- 'royalblue'=>array(65,105,225),
- 'blue'=>array(0,0,255),
- 'dodgerblue'=>array(30,144,255),
- 'deepskyblue'=>array(0,191,255),
- 'skyblue'=>array(135,206,235),
- 'lightskyblue'=>array(135,206,250),
- 'steelblue'=>array(70,130,180),
- 'lightred'=>array(211,167,168),
- 'lightsteelblue'=>array(176,196,222),
- 'lightblue'=>array(173,216,230),
- 'powderblue'=>array(176,224,230),
- 'paleturquoise'=>array(175,238,238),
- 'darkturquoise'=>array(0,206,209),
- 'mediumturquoise'=>array(72,209,204),
- 'turquoise'=>array(64,224,208),
- 'cyan'=>array(0,255,255),
- 'lightcyan'=>array(224,255,255),
- 'cadetblue'=>array(95,158,160),
- 'mediumaquamarine'=>array(102,205,170),
- 'aquamarine'=>array(127,255,212),
- 'darkgreen'=>array(0,100,0),
- 'darkolivegreen'=>array(85,107,47),
- 'darkseagreen'=>array(143,188,143),
- 'seagreen'=>array(46,139,87),
- 'mediumseagreen'=>array(60,179,113),
- 'lightseagreen'=>array(32,178,170),
- 'palegreen'=>array(152,251,152),
- 'springgreen'=>array(0,255,127),
- 'lawngreen'=>array(124,252,0),
- 'green'=>array(0,255,0),
- 'chartreuse'=>array(127,255,0),
- 'mediumspringgreen'=>array(0,250,154),
- 'greenyellow'=>array(173,255,47),
- 'limegreen'=>array(50,205,50),
- 'yellowgreen'=>array(154,205,50),
- 'forestgreen'=>array(34,139,34),
- 'olivedrab'=>array(107,142,35),
- 'darkkhaki'=>array(189,183,107),
- 'khaki'=>array(240,230,140),
- 'palegoldenrod'=>array(238,232,170),
- 'lightgoldenrodyellow'=>array(250,250,210),
- 'lightyellow'=>array(255,255,200),
- 'yellow'=>array(255,255,0),
- 'gold'=>array(255,215,0),
- 'lightgoldenrod'=>array(238,221,130),
- 'goldenrod'=>array(218,165,32),
- 'darkgoldenrod'=>array(184,134,11),
- 'rosybrown'=>array(188,143,143),
- 'indianred'=>array(205,92,92),
- 'saddlebrown'=>array(139,69,19),
- 'sienna'=>array(160,82,45),
- 'peru'=>array(205,133,63),
- 'burlywood'=>array(222,184,135),
- 'beige'=>array(245,245,220),
- 'wheat'=>array(245,222,179),
- 'sandybrown'=>array(244,164,96),
- 'tan'=>array(210,180,140),
- 'chocolate'=>array(210,105,30),
- 'firebrick'=>array(178,34,34),
- 'brown'=>array(165,42,42),
- 'darksalmon'=>array(233,150,122),
- 'salmon'=>array(250,128,114),
- 'lightsalmon'=>array(255,160,122),
- 'orange'=>array(255,165,0),
- 'darkorange'=>array(255,140,0),
- 'coral'=>array(255,127,80),
- 'lightcoral'=>array(240,128,128),
- 'tomato'=>array(255,99,71),
- 'orangered'=>array(255,69,0),
- 'red'=>array(255,0,0),
- 'hotpink'=>array(255,105,180),
- 'deeppink'=>array(255,20,147),
- 'pink'=>array(255,192,203),
- 'lightpink'=>array(255,182,193),
- 'palevioletred'=>array(219,112,147),
- 'maroon'=>array(176,48,96),
- 'mediumvioletred'=>array(199,21,133),
- 'violetred'=>array(208,32,144),
- 'magenta'=>array(255,0,255),
- 'violet'=>array(238,130,238),
- 'plum'=>array(221,160,221),
- 'orchid'=>array(218,112,214),
- 'mediumorchid'=>array(186,85,211),
- 'darkorchid'=>array(153,50,204),
- 'darkviolet'=>array(148,0,211),
- 'blueviolet'=>array(138,43,226),
- 'purple'=>array(160,32,240),
- 'mediumpurple'=>array(147,112,219),
- 'thistle'=>array(216,191,216),
- 'snow1'=>array(255,250,250),
- 'snow2'=>array(238,233,233),
- 'snow3'=>array(205,201,201),
- 'snow4'=>array(139,137,137),
- 'seashell1'=>array(255,245,238),
- 'seashell2'=>array(238,229,222),
- 'seashell3'=>array(205,197,191),
- 'seashell4'=>array(139,134,130),
- 'AntiqueWhite1'=>array(255,239,219),
- 'AntiqueWhite2'=>array(238,223,204),
- 'AntiqueWhite3'=>array(205,192,176),
- 'AntiqueWhite4'=>array(139,131,120),
- 'bisque1'=>array(255,228,196),
- 'bisque2'=>array(238,213,183),
- 'bisque3'=>array(205,183,158),
- 'bisque4'=>array(139,125,107),
- 'peachPuff1'=>array(255,218,185),
- 'peachpuff2'=>array(238,203,173),
- 'peachpuff3'=>array(205,175,149),
- 'peachpuff4'=>array(139,119,101),
- 'navajowhite1'=>array(255,222,173),
- 'navajowhite2'=>array(238,207,161),
- 'navajowhite3'=>array(205,179,139),
- 'navajowhite4'=>array(139,121,94),
- 'lemonchiffon1'=>array(255,250,205),
- 'lemonchiffon2'=>array(238,233,191),
- 'lemonchiffon3'=>array(205,201,165),
- 'lemonchiffon4'=>array(139,137,112),
- 'ivory1'=>array(255,255,240),
- 'ivory2'=>array(238,238,224),
- 'ivory3'=>array(205,205,193),
- 'ivory4'=>array(139,139,131),
- 'honeydew'=>array(193,205,193),
- 'lavenderblush1'=>array(255,240,245),
- 'lavenderblush2'=>array(238,224,229),
- 'lavenderblush3'=>array(205,193,197),
- 'lavenderblush4'=>array(139,131,134),
- 'mistyrose1'=>array(255,228,225),
- 'mistyrose2'=>array(238,213,210),
- 'mistyrose3'=>array(205,183,181),
- 'mistyrose4'=>array(139,125,123),
- 'azure1'=>array(240,255,255),
- 'azure2'=>array(224,238,238),
- 'azure3'=>array(193,205,205),
- 'azure4'=>array(131,139,139),
- 'slateblue1'=>array(131,111,255),
- 'slateblue2'=>array(122,103,238),
- 'slateblue3'=>array(105,89,205),
- 'slateblue4'=>array(71,60,139),
- 'royalblue1'=>array(72,118,255),
- 'royalblue2'=>array(67,110,238),
- 'royalblue3'=>array(58,95,205),
- 'royalblue4'=>array(39,64,139),
- 'dodgerblue1'=>array(30,144,255),
- 'dodgerblue2'=>array(28,134,238),
- 'dodgerblue3'=>array(24,116,205),
- 'dodgerblue4'=>array(16,78,139),
- 'steelblue1'=>array(99,184,255),
- 'steelblue2'=>array(92,172,238),
- 'steelblue3'=>array(79,148,205),
- 'steelblue4'=>array(54,100,139),
- 'deepskyblue1'=>array(0,191,255),
- 'deepskyblue2'=>array(0,178,238),
- 'deepskyblue3'=>array(0,154,205),
- 'deepskyblue4'=>array(0,104,139),
- 'skyblue1'=>array(135,206,255),
- 'skyblue2'=>array(126,192,238),
- 'skyblue3'=>array(108,166,205),
- 'skyblue4'=>array(74,112,139),
- 'lightskyblue1'=>array(176,226,255),
- 'lightskyblue2'=>array(164,211,238),
- 'lightskyblue3'=>array(141,182,205),
- 'lightskyblue4'=>array(96,123,139),
- 'slategray1'=>array(198,226,255),
- 'slategray2'=>array(185,211,238),
- 'slategray3'=>array(159,182,205),
- 'slategray4'=>array(108,123,139),
- 'lightsteelblue1'=>array(202,225,255),
- 'lightsteelblue2'=>array(188,210,238),
- 'lightsteelblue3'=>array(162,181,205),
- 'lightsteelblue4'=>array(110,123,139),
- 'lightblue1'=>array(191,239,255),
- 'lightblue2'=>array(178,223,238),
- 'lightblue3'=>array(154,192,205),
- 'lightblue4'=>array(104,131,139),
- 'lightcyan1'=>array(224,255,255),
- 'lightcyan2'=>array(209,238,238),
- 'lightcyan3'=>array(180,205,205),
- 'lightcyan4'=>array(122,139,139),
- 'paleturquoise1'=>array(187,255,255),
- 'paleturquoise2'=>array(174,238,238),
- 'paleturquoise3'=>array(150,205,205),
- 'paleturquoise4'=>array(102,139,139),
- 'cadetblue1'=>array(152,245,255),
- 'cadetblue2'=>array(142,229,238),
- 'cadetblue3'=>array(122,197,205),
- 'cadetblue4'=>array(83,134,139),
- 'turquoise1'=>array(0,245,255),
- 'turquoise2'=>array(0,229,238),
- 'turquoise3'=>array(0,197,205),
- 'turquoise4'=>array(0,134,139),
- 'cyan1'=>array(0,255,255),
- 'cyan2'=>array(0,238,238),
- 'cyan3'=>array(0,205,205),
- 'cyan4'=>array(0,139,139),
- 'darkslategray1'=>array(151,255,255),
- 'darkslategray2'=>array(141,238,238),
- 'darkslategray3'=>array(121,205,205),
- 'darkslategray4'=>array(82,139,139),
- 'aquamarine1'=>array(127,255,212),
- 'aquamarine2'=>array(118,238,198),
- 'aquamarine3'=>array(102,205,170),
- 'aquamarine4'=>array(69,139,116),
- 'darkseagreen1'=>array(193,255,193),
- 'darkseagreen2'=>array(180,238,180),
- 'darkseagreen3'=>array(155,205,155),
- 'darkseagreen4'=>array(105,139,105),
- 'seagreen1'=>array(84,255,159),
- 'seagreen2'=>array(78,238,148),
- 'seagreen3'=>array(67,205,128),
- 'seagreen4'=>array(46,139,87),
- 'palegreen1'=>array(154,255,154),
- 'palegreen2'=>array(144,238,144),
- 'palegreen3'=>array(124,205,124),
- 'palegreen4'=>array(84,139,84),
- 'springgreen1'=>array(0,255,127),
- 'springgreen2'=>array(0,238,118),
- 'springgreen3'=>array(0,205,102),
- 'springgreen4'=>array(0,139,69),
- 'chartreuse1'=>array(127,255,0),
- 'chartreuse2'=>array(118,238,0),
- 'chartreuse3'=>array(102,205,0),
- 'chartreuse4'=>array(69,139,0),
- 'olivedrab1'=>array(192,255,62),
- 'olivedrab2'=>array(179,238,58),
- 'olivedrab3'=>array(154,205,50),
- 'olivedrab4'=>array(105,139,34),
- 'darkolivegreen1'=>array(202,255,112),
- 'darkolivegreen2'=>array(188,238,104),
- 'darkolivegreen3'=>array(162,205,90),
- 'darkolivegreen4'=>array(110,139,61),
- 'khaki1'=>array(255,246,143),
- 'khaki2'=>array(238,230,133),
- 'khaki3'=>array(205,198,115),
- 'khaki4'=>array(139,134,78),
- 'lightgoldenrod1'=>array(255,236,139),
- 'lightgoldenrod2'=>array(238,220,130),
- 'lightgoldenrod3'=>array(205,190,112),
- 'lightgoldenrod4'=>array(139,129,76),
- 'yellow1'=>array(255,255,0),
- 'yellow2'=>array(238,238,0),
- 'yellow3'=>array(205,205,0),
- 'yellow4'=>array(139,139,0),
- 'gold1'=>array(255,215,0),
- 'gold2'=>array(238,201,0),
- 'gold3'=>array(205,173,0),
- 'gold4'=>array(139,117,0),
- 'goldenrod1'=>array(255,193,37),
- 'goldenrod2'=>array(238,180,34),
- 'goldenrod3'=>array(205,155,29),
- 'goldenrod4'=>array(139,105,20),
- 'darkgoldenrod1'=>array(255,185,15),
- 'darkgoldenrod2'=>array(238,173,14),
- 'darkgoldenrod3'=>array(205,149,12),
- 'darkgoldenrod4'=>array(139,101,8),
- 'rosybrown1'=>array(255,193,193),
- 'rosybrown2'=>array(238,180,180),
- 'rosybrown3'=>array(205,155,155),
- 'rosybrown4'=>array(139,105,105),
- 'indianred1'=>array(255,106,106),
- 'indianred2'=>array(238,99,99),
- 'indianred3'=>array(205,85,85),
- 'indianred4'=>array(139,58,58),
- 'sienna1'=>array(255,130,71),
- 'sienna2'=>array(238,121,66),
- 'sienna3'=>array(205,104,57),
- 'sienna4'=>array(139,71,38),
- 'burlywood1'=>array(255,211,155),
- 'burlywood2'=>array(238,197,145),
- 'burlywood3'=>array(205,170,125),
- 'burlywood4'=>array(139,115,85),
- 'wheat1'=>array(255,231,186),
- 'wheat2'=>array(238,216,174),
- 'wheat3'=>array(205,186,150),
- 'wheat4'=>array(139,126,102),
- 'tan1'=>array(255,165,79),
- 'tan2'=>array(238,154,73),
- 'tan3'=>array(205,133,63),
- 'tan4'=>array(139,90,43),
- 'chocolate1'=>array(255,127,36),
- 'chocolate2'=>array(238,118,33),
- 'chocolate3'=>array(205,102,29),
- 'chocolate4'=>array(139,69,19),
- 'firebrick1'=>array(255,48,48),
- 'firebrick2'=>array(238,44,44),
- 'firebrick3'=>array(205,38,38),
- 'firebrick4'=>array(139,26,26),
- 'brown1'=>array(255,64,64),
- 'brown2'=>array(238,59,59),
- 'brown3'=>array(205,51,51),
- 'brown4'=>array(139,35,35),
- 'salmon1'=>array(255,140,105),
- 'salmon2'=>array(238,130,98),
- 'salmon3'=>array(205,112,84),
- 'salmon4'=>array(139,76,57),
- 'lightsalmon1'=>array(255,160,122),
- 'lightsalmon2'=>array(238,149,114),
- 'lightsalmon3'=>array(205,129,98),
- 'lightsalmon4'=>array(139,87,66),
- 'orange1'=>array(255,165,0),
- 'orange2'=>array(238,154,0),
- 'orange3'=>array(205,133,0),
- 'orange4'=>array(139,90,0),
- 'darkorange1'=>array(255,127,0),
- 'darkorange2'=>array(238,118,0),
- 'darkorange3'=>array(205,102,0),
- 'darkorange4'=>array(139,69,0),
- 'coral1'=>array(255,114,86),
- 'coral2'=>array(238,106,80),
- 'coral3'=>array(205,91,69),
- 'coral4'=>array(139,62,47),
- 'tomato1'=>array(255,99,71),
- 'tomato2'=>array(238,92,66),
- 'tomato3'=>array(205,79,57),
- 'tomato4'=>array(139,54,38),
- 'orangered1'=>array(255,69,0),
- 'orangered2'=>array(238,64,0),
- 'orangered3'=>array(205,55,0),
- 'orangered4'=>array(139,37,0),
- 'deeppink1'=>array(255,20,147),
- 'deeppink2'=>array(238,18,137),
- 'deeppink3'=>array(205,16,118),
- 'deeppink4'=>array(139,10,80),
- 'hotpink1'=>array(255,110,180),
- 'hotpink2'=>array(238,106,167),
- 'hotpink3'=>array(205,96,144),
- 'hotpink4'=>array(139,58,98),
- 'pink1'=>array(255,181,197),
- 'pink2'=>array(238,169,184),
- 'pink3'=>array(205,145,158),
- 'pink4'=>array(139,99,108),
- 'lightpink1'=>array(255,174,185),
- 'lightpink2'=>array(238,162,173),
- 'lightpink3'=>array(205,140,149),
- 'lightpink4'=>array(139,95,101),
- 'palevioletred1'=>array(255,130,171),
- 'palevioletred2'=>array(238,121,159),
- 'palevioletred3'=>array(205,104,137),
- 'palevioletred4'=>array(139,71,93),
- 'maroon1'=>array(255,52,179),
- 'maroon2'=>array(238,48,167),
- 'maroon3'=>array(205,41,144),
- 'maroon4'=>array(139,28,98),
- 'violetred1'=>array(255,62,150),
- 'violetred2'=>array(238,58,140),
- 'violetred3'=>array(205,50,120),
- 'violetred4'=>array(139,34,82),
- 'magenta1'=>array(255,0,255),
- 'magenta2'=>array(238,0,238),
- 'magenta3'=>array(205,0,205),
- 'magenta4'=>array(139,0,139),
- 'mediumred'=>array(140,34,34),
- 'orchid1'=>array(255,131,250),
- 'orchid2'=>array(238,122,233),
- 'orchid3'=>array(205,105,201),
- 'orchid4'=>array(139,71,137),
- 'plum1'=>array(255,187,255),
- 'plum2'=>array(238,174,238),
- 'plum3'=>array(205,150,205),
- 'plum4'=>array(139,102,139),
- 'mediumorchid1'=>array(224,102,255),
- 'mediumorchid2'=>array(209,95,238),
- 'mediumorchid3'=>array(180,82,205),
- 'mediumorchid4'=>array(122,55,139),
- 'darkorchid1'=>array(191,62,255),
- 'darkorchid2'=>array(178,58,238),
- 'darkorchid3'=>array(154,50,205),
- 'darkorchid4'=>array(104,34,139),
- 'purple1'=>array(155,48,255),
- 'purple2'=>array(145,44,238),
- 'purple3'=>array(125,38,205),
- 'purple4'=>array(85,26,139),
- 'mediumpurple1'=>array(171,130,255),
- 'mediumpurple2'=>array(159,121,238),
- 'mediumpurple3'=>array(137,104,205),
- 'mediumpurple4'=>array(93,71,139),
- 'thistle1'=>array(255,225,255),
- 'thistle2'=>array(238,210,238),
- 'thistle3'=>array(205,181,205),
- 'thistle4'=>array(139,123,139),
- 'gray1'=>array(10,10,10),
- 'gray2'=>array(40,40,30),
- 'gray3'=>array(70,70,70),
- 'gray4'=>array(100,100,100),
- 'gray5'=>array(130,130,130),
- 'gray6'=>array(160,160,160),
- 'gray7'=>array(190,190,190),
- 'gray8'=>array(210,210,210),
- 'gray9'=>array(240,240,240),
- 'darkgray'=>array(100,100,100),
- 'darkblue'=>array(0,0,139),
- 'darkcyan'=>array(0,139,139),
- 'darkmagenta'=>array(139,0,139),
- 'darkred'=>array(139,0,0),
- 'silver'=>array(192, 192, 192),
- 'eggplant'=>array(144,176,168),
- 'lightgreen'=>array(144,238,144));
- }
-
-
- //----------------
- // PUBLIC METHODS
- // Colors can be specified as either
- // 1. #xxxxxx HTML style
- // 2. "colorname" as a named color
- // 3. array(r,g,b) RGB triple
- // This function translates this to a native RGB format and returns an
- // RGB triple.
-
- function Color($aColor) {
- if (is_string($aColor)) {
- $matches = array();
- // this regex will parse a color string and fill the $matches array as such:
- // 0: the full match if any
- // 1: a hex string preceded by a hash, can be 3 characters (#fff) or 6 (#ffffff) (4 or 5 also accepted but...)
- // 2,3,4: r,g,b values in hex if the first character of the string is #
- // 5: all alpha-numeric characters at the beginning of the string if string does not start with #
- // 6: alpha value prefixed by @ if supplied
- // 7: alpha value with @ stripped
- // 8: adjust value prefixed with : if supplied
- // 9: adjust value with : stripped
- $regex = '/(#([0-9a-fA-F]{1,2})([0-9a-fA-F]{1,2})([0-9a-fA-F]{1,2}))?([\w]+)?(@([\d\.,]+))?(:([\d\.,]+))?/';
- if(!preg_match($regex, $aColor, $matches)) {
- JpGraphError::RaiseL(25078,$aColor);//(" Unknown color: $aColor");
- }
- if(empty($matches[5])) {
- $r = strlen($matches[2]) == 1 ? $matches[2].$matches[2] : $matches[2];
- $g = strlen($matches[3]) == 1 ? $matches[3].$matches[3] : $matches[3];
- $b = strlen($matches[4]) == 1 ? $matches[4].$matches[4] : $matches[4];
- $r = hexdec($r);
- $g = hexdec($g);
- $b = hexdec($b);
- }else {
- if(!isset($this->rgb_table[$matches[5]]) ) {
- JpGraphError::RaiseL(25078,$aColor);//(" Unknown color: $aColor");
- }
- $r = $this->rgb_table[$matches[5]][0];
- $g = $this->rgb_table[$matches[5]][1];
- $b = $this->rgb_table[$matches[5]][2];
- }
- $alpha = isset($matches[7]) ? str_replace(',','.',$matches[7]) : 0;
- $adj = isset($matches[9]) ? str_replace(',','.',$matches[9]) : 1.0;
-
- if( $adj < 0 ) {
- JpGraphError::RaiseL(25077);//('Adjustment factor for color must be > 0');
- }
-
- // Scale adj so that an adj=2 always
- // makes the color 100% white (i.e. 255,255,255.
- // and adj=1 neutral and adj=0 black.
- if( $adj == 1) {
- return array($r,$g,$b,$alpha);
- }
- elseif( $adj > 1 ) {
- $m = ($adj-1.0)*(255-min(255,min($r,min($g,$b))));
- return array(min(255,$r+$m), min(255,$g+$m), min(255,$b+$m),$alpha);
- }
- elseif( $adj < 1 ) {
- $m = ($adj-1.0)*max(255,max($r,max($g,$b)));
- return array(max(0,$r+$m), max(0,$g+$m), max(0,$b+$m),$alpha);
- }
- } elseif( is_array($aColor) ) {
- if(!isset($aColor[3])) $aColor[3] = 0;
- return $aColor;
- }
- else {
- JpGraphError::RaiseL(25079,$aColor,count($aColor));//(" Unknown color specification: $aColor , size=".count($aColor));
- }
- }
-
- // Compare two colors
- // return true if equal
- function Equal($aCol1,$aCol2) {
- $c1 = $this->Color($aCol1);
- $c2 = $this->Color($aCol2);
- return $c1[0]==$c2[0] && $c1[1]==$c2[1] && $c1[2]==$c2[2] ;
- }
-
- // Allocate a new color in the current image
- // Return new color index, -1 if no more colors could be allocated
- function Allocate($aColor,$aAlpha=0.0) {
- list ($r, $g, $b, $a) = $this->color($aColor);
- // If alpha is specified in the color string then this
- // takes precedence over the second argument
- if( $a > 0 ) {
- $aAlpha = $a;
- }
- if( $aAlpha < 0 || $aAlpha > 1 ) {
- JpGraphError::RaiseL(25080);//('Alpha parameter for color must be between 0.0 and 1.0');
- }
- return imagecolorresolvealpha($this->img, $r, $g, $b, round($aAlpha * 127));
- }
-
- // Try to convert an array with three valid numbers to the corresponding hex array
- // This is currenly only used in processing the colors for barplots in order to be able
- // to handle the case where the color might be specified as an array of colros as well.
- // In that case we must be able to find out if an array of values should be interpretated as
- // a single color (specifeid as an RGB triple)
- static function tryHexConversion($aColor) {
- if( is_array( $aColor ) ) {
- if( count( $aColor ) == 3 ) {
- if( is_numeric($aColor[0]) && is_numeric($aColor[1]) && is_numeric($aColor[2]) ) {
- if( ($aColor[0] >= 0 && $aColor[0] <= 255) &&
- ($aColor[1] >= 0 && $aColor[1] <= 255) &&
- ($aColor[2] >= 0 && $aColor[2] <= 255) ) {
- return sprintf('#%02x%02x%02x',$aColor[0],$aColor[1],$aColor[2]);
- }
- }
- }
- }
- return $aColor;
- }
-
- // Return a RGB tripple corresponding to a position in the normal light spectrum
- // The argumen values is in the range [0, 1] where a value of 0 correponds to blue and
- // a value of 1 corresponds to red. Values in betwen is mapped to a linear interpolation
- // of the constituting colors in the visible color spectra.
- // The $aDynamicRange specified how much of the dynamic range we shold use
- // a value of 1.0 give the full dyanmic range and a lower value give more dark
- // colors. In the extreme of 0.0 then all colors will be black.
- static function GetSpectrum($aVal,$aDynamicRange=1.0) {
- if( $aVal < 0 || $aVal > 1.0001 ) {
- return array(0,0,0); // Invalid case - just return black
- }
-
- $sat = round(255*$aDynamicRange);
- $a = 0.25;
- if( $aVal <= 0.25 ) {
- return array(0, round($sat*$aVal/$a), $sat);
- }
- elseif( $aVal <= 0.5 ) {
- return array(0, $sat, round($sat-$sat*($aVal-0.25)/$a));
- }
- elseif( $aVal <= 0.75 ) {
- return array(round($sat*($aVal-0.5)/$a), $sat, 0);
- }
- else {
- return array($sat, round($sat-$sat*($aVal-0.75)/$a), 0);
- }
- }
-
-} // Class
-
-?>
generated by cgit (git 2.34.1) at 2025-06-15 22:08:08 +0000