Rev 20 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 20 | reyssat | 1 | /* |
| 2 | DynAPI Distribution |
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| 10534 | obado | 3 | dynapi.functions.Color extension |
| 20 | reyssat | 4 | */ |
| 5 | |||
| 6 | var f = dynapi.functions; |
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| 7 | f.Color = Color = {}; // used by dynapi.library |
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| 8 | |||
| 9 | // Color Functions --------------------------- |
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| 10 | |||
| 11 | f.DecToHex = function(val){ |
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| 12 | lo=val%16; |
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| 13 | val-=lo; |
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| 14 | lo+=48; |
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| 15 | if (lo>57) lo+=7; |
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| 16 | hi=val/16; |
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| 17 | hi+=48; |
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| 18 | if (hi>57) hi+=7; |
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| 19 | return String.fromCharCode(hi,lo); |
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| 20 | }; |
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| 10534 | obado | 21 | f.getColor = function(r,g,b) { |
| 20 | reyssat | 22 | return '#'+dynapi.functions.DecToHex(r)+dynapi.functions.DecToHex(g)+dynapi.functions.DecToHex(b); |
| 23 | }; |
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| 24 | f.getRandomColor = function() { |
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| 25 | var s = ''; |
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| 26 | for (var i=0;i<3;i++) s += dynapi.functions.DecToHex(Math.floor(255*Math.random())); |
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| 27 | return s; |
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| 28 | }; |
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| 29 | f.createRedPal = function(pal) { |
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| 30 | var r=g=b=0; |
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| 31 | for (var i=0; i<256; i++){ |
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| 32 | pal[i]=dynapi.functions.getColor(r,g,b); |
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| 33 | r+=8; |
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| 34 | if (r>255) { r=255; g+=6; b+=2; } |
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| 35 | if (g>255) { g=255; b+=2; } |
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| 36 | if (b>255) { b=255; } |
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| 37 | } |
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| 38 | }; |
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| 39 | f.createGrayPal = function(pal) { |
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| 40 | var r=0; |
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| 41 | for (var i=0; i<256; i++){ |
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| 42 | pal[i]=dynapi.functions.getColor(r,r,r); |
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| 43 | r+=4; |
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| 44 | if (r>255) { r=255; } |
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| 45 | } |
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| 46 | }; |
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| 47 | f.createBluePal = function(pal){ |
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| 48 | var r=g=b=0; |
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| 49 | for (var i=0; i<256; i++){ |
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| 50 | pal[i]=dynapi.functions.getColor(r,g,b); |
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| 51 | b+=6; |
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| 52 | if (b>255) { b=255; g+=2; } |
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| 53 | if (g>255) { g=255; r+=2; } |
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| 54 | } |
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| 55 | }; |
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| 56 | f.createGreenPal = function(pal) { |
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| 57 | var r=g=b=0; |
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| 58 | for (var i=0; i<256; i++){ |
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| 59 | pal[i]=dynapi.functions.getColor(r,g,b); |
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| 60 | g+=6; |
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| 61 | if (g>255) { g=255; b+=2; } |
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| 62 | if (b>255) { b=255; r+=2; } |
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| 63 | } |
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| 64 | }; |
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| 65 | f.fadeColor = function(from, to, percent){ |
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| 66 | if(!from || !to) return; |
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| 67 | if(percent<0) return from; |
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| 68 | else if(percent>100) to; |
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| 10534 | obado | 69 | |
| 20 | reyssat | 70 | if(from.substring(0,1)!='#') from='#'+from; |
| 71 | if(to.substring(0,1)!='#') to='#'+to; |
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| 72 | |||
| 73 | from = { |
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| 74 | red:parseInt(from.substring(1,3),16), |
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| 75 | green:parseInt(from.substring(3,5),16), |
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| 76 | blue:parseInt(from.substring(5,7),16) |
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| 77 | } |
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| 78 | |||
| 79 | to = { |
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| 80 | red:parseInt(to.substring(1,3),16), |
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| 81 | green:parseInt(to.substring(3,5),16), |
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| 82 | blue:parseInt(to.substring(5,7),16) |
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| 83 | } |
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| 84 | |||
| 85 | var r=from.red+Math.round((percent/100)*(to.red-from.red)); |
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| 86 | var g=from.green+Math.round((percent/100)*(to.green-from.green)); |
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| 87 | var b=from.blue+Math.round((percent/100)*(to.blue-from.blue)); |
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| 88 | |||
| 89 | r = (r < 16 ? '0' : '') + r.toString(16); |
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| 90 | g = (g < 16 ? '0' : '') + g.toString(16); |
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| 91 | b = (b < 16 ? '0' : '') + b.toString(16); |
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| 92 | |||
| 93 | return '#' + r + g + b; |
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| 94 | }; |