Page MenuHomeCode
Files F881989

Generator.js
No OneTemporary
Actions

Generator.js
View Options

if(!dojo._hasResource["dojox.color.Generator"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.color.Generator"] = true;
dojo.provide("dojox.color.Generator");
dojox.color.Generator = new (function(){
var dxc=dojox.color;
// common helper functions
var prep=function(obj, fnName){
if(!obj){
console.warn("dojox.color.Generator::", fnName, ": no base color was passed. ", obj);
return null;
}
if(!obj.toHsv){
// either a raw string or object, return a Color.
obj=new dxc.Color(obj);
}
return obj;
};
var factors=function(n, high, low){
var ret=[];
var i, step=(high-low)/n, cur=high;
for(i=0; i<n; i++,cur-=step){ ret.push(cur); }
return ret;
};
var fill=function(color, num, factors){
var c=factors.length-1, a=[], r, g, b;
for(var i=0; i<num; i++){
if(i<factors.length){
r=color.r+(255-color.r)*factors[i],
g=color.g+(255-color.g)*factors[i],
b=color.b+(255-color.b)*factors[i];
a.push(new dxc.Color({ r:r, g:g, b:b }));
}
else if(i==factors.length){
a.push(color);
}
else {
if(c<0){ c=factors.length-1; } // just in case.
r=color.r*(1-factors[c]),
g=color.g*(1-factors[c]),
b=color.b*(1-factors[c--]);
a.push(new dxc.Color({ r:r, g:g, b:b }));
}
}
return a;
};
var flatten=function(matrix, limit, ord){
// todo: set up the ordering thing.
var ret=[];
for(var i=0; i<matrix[0].length; i++){
for(var j=0; j<matrix.length; j++){
ret.push(matrix[j][i]);
}
}
ret.length=limit;
return ret;
};
// the color generator
this.analogous= function(kwArgs){
// summary
// generates n colors based on a base color, based on a fixed hue angle delta
// (relative to the base hue) with slight variations in saturation.
kwArgs=dojo.mixin({
series:4, // number of analogous lines to generate
num:32, // number of colors to derive
order:"bottom up", // the order of the returned color array
angle:30, // the angle of difference to use
high:0.5, // high part of range to generate tints and shades
low:0.15 // low part of range to generate tints and shades
}, kwArgs||{});
var base=prep(kwArgs.base, "analogous");
if(!base){ return []; }
// let start the generation. We use series to move further away from the center.
var num=kwArgs.num, hsv=base.toHsv();
var rows=kwArgs.series+1, cols=Math.ceil(num/rows);
var fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
var m=[], cur=hsv.h-(kwArgs.angle*(kwArgs.series/2));
for(var i=0; i<rows; i++,cur+=kwArgs.angle){
if(cur<0) { cur+=360 ; }
if(cur>=360){ cur-=360; }
m.push(fill(dxc.fromHsv({ h: cur, s:hsv.s, v:hsv.v }), cols, fs));
}
return flatten(m, num, kwArgs.order); // Array
};
this.monochromatic = function(kwArgs){
// summary
// generates n colors based on a base color, using alterations to the RGB model only.
kwArgs=dojo.mixin({
num:32, // number of colors to derive
high:0.5, // high factor to generate tints and shades
low:0.15 // low factor to generate tints and shades
}, kwArgs||{});
var base=prep(kwArgs.base, "monochromatic");
if(!base){ return []; }
var fs=factors(Math.floor(kwArgs.num/2), kwArgs.high, kwArgs.low);
var a=fill(base, kwArgs.num, fs);
return a; // Array
};
this.triadic = function(kwArgs){
// summary
// generates n colors from a base color, using the triadic rules, rough
// approximation from kuler.adobe.com.
kwArgs=dojo.mixin({
num:32, // number of colors to derive
order:"bottom up", // the order of the returned color array
high:0.5, // high factor to generate tints and shades
low:0.15 // low factor to generate tints and shades
}, kwArgs||{});
var base=prep(kwArgs.base, "triadic");
if(!base){ return []; }
var num=kwArgs.num, rows=3, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
var m=[], hsv=base.toHsv();
// hue calculations
var h1=hsv.h+57, h2=hsv.h-157;
if(h1>360){ h1-=360; }
if(h2<0){ h2+=360; }
// sat calculations
var s1=(hsv.s>=20) ? hsv.s-10 : hsv.s+10;
var s2=(hsv.s>=95) ? hsv.s-5 : hsv.s+5;
// value calcs
var v2=(hsv.v>=70) ? hsv.v-30 : hsv.v+30;
m.push(fill(dojox.color.fromHsv({ h:h1, s:s1, v:hsv.v }), cols, fs));
m.push(fill(base, cols, fs));
m.push(fill(dojox.color.fromHsv({ h:h2, s:s2, v:v2 }), cols, fs));
return flatten(m, num, kwArgs.order); // Array
};
this.complementary = function(kwArgs){
// summary
// generates n colors from a base color, using complimentary rules.
kwArgs=dojo.mixin({
num:32, // number of colors to derive
order:"bottom up", // the order of the returned color array
high:0.5, // high factor to generate tints and shades
low:0.15 // low factor to generate tints and shades
}, kwArgs||{});
var base=prep(kwArgs.base, "complimentary");
if(!base){ return []; }
var num=kwArgs.num, rows=2, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
var m=[], hsv=base.toHsv();
var compliment=(hsv.h+120)%360;
m.push(fill(base, cols, fs));
m.push(fill(dojox.color.fromHsv({ h:compliment, s:hsv.s, v:hsv.v }), cols, fs));
return flatten(m, num, kwArgs.order); // Array
};
this.splitComplementary = function(kwArgs){
// summary
// generates n colors from a base color, using split complimentary rules.
kwArgs=dojo.mixin({
num:32, // number of colors to derive
order:"bottom up", // the order of the returned color array
angle:30, // the angle of difference to use
high:0.5, // high factor to generate tints and shades
low:0.15 // low factor to generate tints and shades
}, kwArgs||{});
var base=prep(kwArgs.base, "splitComplementary");
if(!base){ return []; }
var num=kwArgs.num, rows=3, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
var m=[], hsv=base.toHsv();
var compliment=(hsv.h+120)%360;
var comp1=compliment-kwArgs.angle, comp2=(compliment+kwArgs.angle)%360;
if(comp1<0){ comp1+=360; }
m.push(fill(base, cols, fs));
m.push(fill(dojox.color.fromHsv({ h:comp1, s:hsv.s, v:hsv.v }), cols, fs));
m.push(fill(dojox.color.fromHsv({ h:comp2, s:hsv.s, v:hsv.v }), cols, fs));
return flatten(m, num, kwArgs.order); // Array
};
this.compound = function(kwArgs){
// summary
// generates n colors from a base color, using a *very* rough approximation
// of the Compound rules at http://kuler.adobe.com
kwArgs=dojo.mixin({
num:32, // number of colors to derive
order:"bottom up", // the order of the returned color array
angle:30, // the angle of difference to use
high:0.5, // high factor to generate tints and shades
low:0.15 // low factor to generate tints and shades
}, kwArgs||{});
var base=prep(kwArgs.base, "compound");
if(!base){ return []; }
var num=kwArgs.num, rows=4, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
var m=[], hsv=base.toHsv();
var comp=(hsv.h+120)%360; // other base angle.
// hue calculations
var h1=(hsv.h+kwArgs.angle)%360, h2=comp-kwArgs.angle, h3=comp-(kwArgs.angle/2);
if(h2<0){ h2+=360; }
if(h3<0){ h3+=360; }
// saturation calculations
var s1=(hsv.s>=90 && hsv.s<=100)? hsv.s-10 : hsv.s+10;
var s2=(hsv.s<=35) ? hsv.s+25 : hsv.s-25;
// value calculations
var v1=hsv.v-20;
var v2=hsv.v;
m.push(fill(base, cols, fs));
m.push(fill(dojox.color.fromHsv({ h:h1, s:s1, v:v1 }), cols, fs));
m.push(fill(dojox.color.fromHsv({ h:h2, s:s1, v:v1 }), cols, fs));
m.push(fill(dojox.color.fromHsv({ h:h3, s:s2, v:v2 }), cols, fs));
return flatten(m, num, kwArgs.order); // Array
};
this.shades = function(kwArgs){
// summary
// generates n colors based on a base color using only changes
// in value. Similar to monochromatic but a bit more linear.
kwArgs=dojo.mixin({
num:32, // number of colors to derive
high:1.5, // high factor to generate tints and shades
low:0.5 // low factor to generate tints and shades
}, kwArgs||{});
var base=prep(kwArgs.base, "shades");
if(!base){ return []; }
var num=kwArgs.num, hsv=base.toHsv();
var step=(kwArgs.high-kwArgs.low)/num, cur=kwArgs.low;
var a=[];
for(var i=0; i<num; i++,cur+=step){
a.push(dxc.fromHsv({ h:hsv.h, s:hsv.s, v:Math.min(Math.round(hsv.v*cur),100) }));
}
console.log("generated color list from shades: ", a);
return a; // Array
};
})();
}

File Metadata

Mime Type
text/plain
Expires
Wed, Apr 2, 13:34 (4 w, 8 h ago)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
24012
Default Alt Text
Generator.js (8 KB)

Event Timeline