red.prototype.color = { /* red.color.to_rgb("rgb(255,255,255)"),[255,255,255] oder "#cccccc" oder farbname*/ to_rgb : function(color){ if(color.charAt(0) == '#'){ if(color.length == 4){ color_tmp = color.charAt(1) +color.charAt(2)+color.charAt(3); color_tmp += color_tmp; color = '#'+color_tmp; return red.prototype.color.hex2rgb(color); } else if(color.length == 7){ return red.prototype.color.hex2rgb(color); } else{ return false; } } else if (red.prototype.is_string(color)) { var result = color.match(/^\s*rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*/); if (result == null) { var farbname = red.prototype.array.in_array(red.prototype.color.farbarray,color,'farbe'); if(farbname){ var hex = farbname['hex']; return red.prototype.color.hex2rgb(hex); } else{ return false; } } else{ return [result[1],result[2],result[3]]; } } else if (red.prototype.is_array(color)) { var result = [color[0],color[1],color[2]]; } else{ return false; } }, rgb2hex : function ( value ) { var rgb = +value[0] << 16 | +value[1] << 8 | +value[2]; var hex = ""; var digits = "0123456789abcdef"; while (rgb != 0) { hex = digits.charAt(rgb&0xf) + hex; rgb >>>= 4; } while (hex.length < 6) { hex = '0' + hex; } return "#" + hex; }, hex2rgb : function ( hex ) { R = hexToR("#FFFFFF"); G = hexToG("#FFFFFF"); B = hexToB("#FFFFFF"); function removeHexMark(hex) { return (hex.charAt(0)=="#") ? hex.substring(1,7) : hex} function hexToR(hex) { return parseInt((removeHexMark(hex)).substring(0,2),16) } function hexToG(hex) { return parseInt((removeHexMark(hex)).substring(2,4),16) } function hexToB(hex) { return parseInt((removeHexMark(hex)).substring(4,6),16) } return rgb = [hexToR(hex) ,hexToG(hex),hexToB(hex)]; }, rgb2hsb : function (v) { var max = Math.max(Math.max(v[0], v[1]), v[2]); var min = Math.min(Math.min(v[0], v[1]), v[2]); var brightness = Math.round(max*20/51); if (min == max) return new Array(0, 0, brightness); var saturation = Math.round((1 - min/max)*100); var d = max - min; var hue = Math.round((max == v[0] ? 6 + (v[1] - v[2])/d : max == v[1] ? 2 + (v[2] - v[0])/d : 4 + (v[0] - v[1])/d )*60) % 360; return new Array(hue, saturation, brightness); }, /* // using integer ranges: // hue: 0 .. 360 // saturation, brightness: 0 .. 100 */ hsb2rgb : function (v) { var max = Math.round(v[2]*51/20); var min = Math.round(max*(1 - v[1]/100)); if (min == max) return new Array(max, max, max); var d = max - min; var h6 = v[0]/60; if (h6 <= 1) return new Array(max, Math.round(min + h6*d), min); if (h6 <= 2) return new Array(Math.round(min - (h6 - 2)*d), max, min); if (h6 <= 3) return new Array(min, max, Math.round(min + (h6 - 2)*d)); if (h6 <= 4) return new Array(min, Math.round(min - (h6 - 4)*d), max); if (h6 <= 5) return new Array(Math.round(min + (h6 - 4)*d), min, max); return new Array(max, min, Math.round(min - (h6 - 6)*d)); }, hex2hsb : function(hex){ var rgb = red.prototype.color.hex2rgb(hex); return red.prototype.color.rgb2hsb(rgb); }, hsb2hex : function (hsb){ var rgb = red.prototype.color.hsb2rgb(hsb); return red.prototype.color.rgb2hex(rgb); }, merge : function (a, b, f) { if (f == 0) return b; if (a == b) return a; return Math.round(a + f/(f + 1)*(b - a)); }, mergecolors : function (h1, h2, f) { if (f == 0) return h2; var c1 = red.prototype.color.hex2rgb(h1); var c2 = red.prototype.color.hex2rgb(h2); return red.prototype.color.rgb2hex(new Array( red.prototype.color.merge(c1[0], c2[0], f), red.prototype.color.merge(c1[1], c2[1], f), red.prototype.color.merge(c1[2], c2[2], f))); }, invertcolor : function (v) { v = red.prototype.color.to_rgb(v); return red.prototype.color.rgb2hex([255 - v[0], 255 - v[1], 255 - v[2]]); }, randcolor : function(hue,sat,bri){ if(hue == null){ hue = red.prototype.randint(0,360); } if(sat == null){ sat = red.prototype.randint(0,100); } if(bri == null){ bri = red.prototype.randint(0,100); } var hex = r.color.hsb2hex([hue,sat,bri]) return hex; }, /*color: hex o. rgb, schritte : int, grad : 0-360, richtung : 'l' o. 'r' */ farbkreis : function (color,schritte,grad,richtung) { if(color==null){ color = '#ff0000'; } if(schritte==null){ schritte = 5; } if(grad==null){ grad = 360; } if(richtung==null){ richtung = 'r'; } var rgb = red.prototype.color.to_rgb(color); var hsb = red.prototype.color.rgb2hsb(rgb); var farbarray = new Array(); var starthue = hsb[0]; var hueweite = grad/(schritte); farbarray[farbarray.length] = red.prototype.color.rgb2hex(rgb); for(var i=1;i 360){ huewert = huewert-360; } else if(huewert < 0){ huewert = huewert+360; } farbarray[farbarray.length] = red.prototype.color.hsb2hex([huewert,hsb[1],hsb[2]]); } return farbarray; }, /* typ : 'hsb' oder 'rgb' */ /* nur 2 farben : von, bis*/ farbverlauf1 : function (von,bis,schritte,typ){ schritte = schritte-1; if(typ == null){typ = 'rgb';} var vonrgb = red.prototype.color.to_rgb(von); var bisrgb = red.prototype.color.to_rgb(bis); var verlaufsarray = new Array(); if(typ == 'hsb'){ var vonhsb = red.prototype.color.rgb2hsb(vonrgb); var bishsb = red.prototype.color.rgb2hsb(bisrgb); var vonhue = vonhsb[0]; var vonsat = vonhsb[1]; var vonbri = vonhsb[2]; var bishue = bishsb[0]; var bissat = bishsb[1]; var bisbri = bishsb[2]; } for(var i=0;i<=schritte;i++){ if(typ == 'hsb'){ var hue = red.prototype.util.fromto(vonhue,bishue,schritte,i,360); var sat = red.prototype.util.fromto(vonsat,bissat,schritte,i); var bri = red.prototype.util.fromto(vonbri,bisbri,schritte,i); verlaufsarray[verlaufsarray.length] = red.prototype.color.hsb2hex([hue,sat,bri]); } else if(typ == 'rgb'){ var r = red.prototype.util.fromto(vonrgb[0],bisrgb[0],schritte,i); var g = red.prototype.util.fromto(vonrgb[1],bisrgb[1],schritte,i); var b = red.prototype.util.fromto(vonrgb[2],bisrgb[2],schritte,i); verlaufsarray[verlaufsarray.length] = red.prototype.color.rgb2hex([r,g,b]); } } return verlaufsarray; }, /* typ : 'hsb' oder 'rgb' */ /* beliebig viele farben als array reingeben*/ farbverlauf : function (farbarray,schritte,typ){ if(typ == null){typ = 'rgb';} var schritt_pro_farbe = Math.floor(schritte/(farbarray.length-1)); var rest = (schritte%schritt_pro_farbe); var verlaufsarray = new Array(); for(var i=0;i