+++ /dev/null
-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){
- if(!obj){
- console.warn("dojox.color.Generator:: 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=[], 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){
- var ret=[];
- for(var i=0; i<matrix[0].length; i++){
- for(var j=0; j<matrix.length; j++){
- ret.push(matrix[j][i]);
- }
- }
- return ret.slice(0, limit);
- };
-
- // the color generator
- this.analogous= function(/* Object */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
- angleHigh:30, // the angle of difference to use, subtracted
- angleLow:8, // the angle of difference to use, added
- 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);
-
- // generate the angle differences
- var ang=[];
- var gen=Math.floor(kwArgs.series/2);
- for(var i=1; i<=gen; i++){
- var a=hsv.h+((kwArgs.angleLow*i)+1);
- if(a>=360){ a-=360; }
- ang.push(a);
- }
- ang.push(0);
- for(i=1; i<=gen; i++){
- a=hsv.h-(kwArgs.angleHigh*i);
- if(a<0){ a+=360; }
- ang.push(a);
- }
-
- var m=[], cur=0;
- for(i=0; i<rows; i++){
- m.push(fill(dxc.fromHsv({ h: ang[cur++], s:hsv.s, v:hsv.v }), cols, fs));
- }
- return flatten(m, num); // Array
- };
-
- this.monochromatic = function(/* Object */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(/* Object */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
- 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); // Array
- };
-
- this.complementary = function(/* Object */kwArgs){
- // summary
- // generates n colors from a base color, using complimentary rules.
- 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, "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); // Array
- };
-
- this.splitComplementary = function(/* Object */kwArgs){
- // summary
- // generates n colors from a base color, using split complimentary rules.
- kwArgs=dojo.mixin({
- num:32, // number of colors to derive
- 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); // Array
- };
-
- this.compound = function(/* Object */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
- 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); // Array
- };
-
- this.shades = function(/* Object */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) }));
- }
- return a; // Array
- };
-})();
-
-}
projects / eow / blobdiff