root / trunk / web / dojo / dojox / gfx3d / lighting.js
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| 1 | 9 | andrej.cim | /*
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| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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| 4 | see: http://dojotoolkit.org/license for details
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| 5 | */
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| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.gfx3d.lighting"]){ |
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| 9 | dojo._hasResource["dojox.gfx3d.lighting"]=true; |
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| 10 | dojo.provide("dojox.gfx3d.lighting");
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| 11 | dojo.require("dojox.gfx._base");
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| 12 | (function(){
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| 13 | var _1=dojox.gfx3d.lighting;
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| 14 | dojo.mixin(dojox.gfx3d.lighting,{black:function(){
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| 15 | return {r:0,g:0,b:0,a:1}; |
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| 16 | },white:function(){ |
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| 17 | return {r:1,g:1,b:1,a:1}; |
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| 18 | },toStdColor:function(c){ |
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| 19 | c=dojox.gfx.normalizeColor(c); |
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| 20 | return {r:c.r/255,g:c.g/255,b:c.b/255,a:c.a}; |
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| 21 | },fromStdColor:function(c){ |
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| 22 | return new dojo.Color([Math.round(255*c.r),Math.round(255*c.g),Math.round(255*c.b),c.a]); |
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| 23 | },scaleColor:function(s,c){ |
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| 24 | return {r:s*c.r,g:s*c.g,b:s*c.b,a:s*c.a}; |
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| 25 | },addColor:function(a,b){ |
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| 26 | return {r:a.r+b.r,g:a.g+b.g,b:a.b+b.b,a:a.a+b.a}; |
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| 27 | },multiplyColor:function(a,b){ |
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| 28 | return {r:a.r*b.r,g:a.g*b.g,b:a.b*b.b,a:a.a*b.a}; |
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| 29 | },saturateColor:function(c){ |
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| 30 | return {r:c.r<0?0:c.r>1?1:c.r,g:c.g<0?0:c.g>1?1:c.g,b:c.b<0?0:c.b>1?1:c.b,a:c.a<0?0:c.a>1?1:c.a}; |
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| 31 | },mixColor:function(c1,c2,s){ |
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| 32 | return _1.addColor(_1.scaleColor(s,c1),_1.scaleColor(1-s,c2)); |
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| 33 | },diff2Color:function(c1,c2){ |
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| 34 | var r=c1.r-c2.r;
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| 35 | var g=c1.g-c2.g;
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| 36 | var b=c1.b-c2.b;
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| 37 | var a=c1.a-c2.a;
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| 38 | return r*r+g*g+b*b+a*a;
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| 39 | },length2Color:function(c){ |
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| 40 | return c.r*c.r+c.g*c.g+c.b*c.b+c.a*c.a;
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| 41 | },dot:function(a,b){ |
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| 42 | return a.x*b.x+a.y*b.y+a.z*b.z;
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| 43 | },scale:function(s,v){ |
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| 44 | return {x:s*v.x,y:s*v.y,z:s*v.z}; |
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| 45 | },add:function(a,b){ |
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| 46 | return {x:a.x+b.x,y:a.y+b.y,z:a.z+b.z}; |
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| 47 | },saturate:function(v){ |
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| 48 | return Math.min(Math.max(v,0),1); |
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| 49 | },length:function(v){ |
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| 50 | return Math.sqrt(dojox.gfx3d.lighting.dot(v,v));
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| 51 | },normalize:function(v){ |
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| 52 | return _1.scale(1/_1.length(v),v); |
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| 53 | },faceforward:function(n,i){ |
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| 54 | var p=dojox.gfx3d.lighting;
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| 55 | var s=p.dot(i,n)<0?1:-1; |
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| 56 | return p.scale(s,n);
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| 57 | },reflect:function(i,n){ |
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| 58 | var p=dojox.gfx3d.lighting;
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| 59 | return p.add(i,p.scale(-2*p.dot(i,n),n)); |
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| 60 | },diffuse:function(_2,_3){ |
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| 61 | var c=_1.black();
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| 62 | for(var i=0;i<_3.length;++i){ |
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| 63 | var l=_3[i],d=_1.dot(_1.normalize(l.direction),_2);
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| 64 | c=_1.addColor(c,_1.scaleColor(d,l.color)); |
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| 65 | } |
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| 66 | return _1.saturateColor(c);
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| 67 | },specular:function(_4,v,_5,_6){ |
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| 68 | var c=_1.black();
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| 69 | for(var i=0;i<_6.length;++i){ |
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| 70 | var l=_6[i],h=_1.normalize(_1.add(_1.normalize(l.direction),v)),s=Math.pow(Math.max(0,_1.dot(_4,h)),1/_5); |
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| 71 | c=_1.addColor(c,_1.scaleColor(s,l.color)); |
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| 72 | } |
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| 73 | return _1.saturateColor(c);
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| 74 | },phong:function(_7,v,_8,_9){ |
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| 75 | _7=_1.normalize(_7); |
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| 76 | var c=_1.black();
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| 77 | for(var i=0;i<_9.length;++i){ |
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| 78 | var l=_9[i],r=_1.reflect(_1.scale(-1,_1.normalize(v)),_7),s=Math.pow(Math.max(0,_1.dot(r,_1.normalize(l.direction))),_8); |
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| 79 | c=_1.addColor(c,_1.scaleColor(s,l.color)); |
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| 80 | } |
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| 81 | return _1.saturateColor(c);
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| 82 | }}); |
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| 83 | dojo.declare("dojox.gfx3d.lighting.Model",null,{constructor:function(_a,_b,_c,_d){ |
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| 84 | this.incident=_1.normalize(_a);
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| 85 | this.lights=[];
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| 86 | for(var i=0;i<_b.length;++i){ |
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| 87 | var l=_b[i];
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| 88 | this.lights.push({direction:_1.normalize(l.direction),color:_1.toStdColor(l.color)}); |
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| 89 | } |
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| 90 | this.ambient=_1.toStdColor(_c.color?_c.color:"white"); |
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| 91 | this.ambient=_1.scaleColor(_c.intensity,this.ambient); |
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| 92 | this.ambient=_1.scaleColor(this.ambient.a,this.ambient); |
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| 93 | this.ambient.a=1; |
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| 94 | this.specular=_1.toStdColor(_d?_d:"white"); |
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| 95 | this.specular=_1.scaleColor(this.specular.a,this.specular); |
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| 96 | this.specular.a=1; |
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| 97 | this.npr_cool={r:0,g:0,b:0.4,a:1}; |
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| 98 | this.npr_warm={r:0.4,g:0.4,b:0.2,a:1}; |
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| 99 | this.npr_alpha=0.2; |
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| 100 | this.npr_beta=0.6; |
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| 101 | this.npr_scale=0.6; |
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| 102 | },constant:function(_e,_f,_10){ |
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| 103 | _10=_1.toStdColor(_10); |
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| 104 | var _11=_10.a,_12=_1.scaleColor(_11,_10);
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| 105 | _12.a=_11; |
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| 106 | return _1.fromStdColor(_1.saturateColor(_12));
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| 107 | },matte:function(_13,_14,_15){ |
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| 108 | if(typeof _14=="string"){ |
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| 109 | _14=_1.finish[_14]; |
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| 110 | } |
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| 111 | _15=_1.toStdColor(_15); |
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| 112 | _13=_1.faceforward(_1.normalize(_13),this.incident);
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| 113 | var _16=_1.scaleColor(_14.Ka,this.ambient),_17=_1.saturate(-4*_1.dot(_13,this.incident)),_18=_1.scaleColor(_17*_14.Kd,_1.diffuse(_13,this.lights)),_19=_1.scaleColor(_15.a,_1.multiplyColor(_15,_1.addColor(_16,_18))); |
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| 114 | _19.a=_15.a; |
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| 115 | return _1.fromStdColor(_1.saturateColor(_19));
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| 116 | },metal:function(_1a,_1b,_1c){ |
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| 117 | if(typeof _1b=="string"){ |
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| 118 | _1b=_1.finish[_1b]; |
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| 119 | } |
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| 120 | _1c=_1.toStdColor(_1c); |
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| 121 | _1a=_1.faceforward(_1.normalize(_1a),this.incident);
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| 122 | var v=_1.scale(-1,this.incident),_1d,_1e,_1f=_1.scaleColor(_1b.Ka,this.ambient),_20=_1.saturate(-4*_1.dot(_1a,this.incident)); |
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| 123 | if("phong" in _1b){ |
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| 124 | _1d=_1.scaleColor(_20*_1b.Ks*_1b.phong,_1.phong(_1a,v,_1b.phong_size,this.lights));
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| 125 | }else{
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| 126 | _1d=_1.scaleColor(_20*_1b.Ks,_1.specular(_1a,v,_1b.roughness,this.lights));
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| 127 | } |
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| 128 | _1e=_1.scaleColor(_1c.a,_1.addColor(_1.multiplyColor(_1c,_1f),_1.multiplyColor(this.specular,_1d)));
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| 129 | _1e.a=_1c.a; |
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| 130 | return _1.fromStdColor(_1.saturateColor(_1e));
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| 131 | },plastic:function(_21,_22,_23){ |
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| 132 | if(typeof _22=="string"){ |
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| 133 | _22=_1.finish[_22]; |
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| 134 | } |
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| 135 | _23=_1.toStdColor(_23); |
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| 136 | _21=_1.faceforward(_1.normalize(_21),this.incident);
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| 137 | var v=_1.scale(-1,this.incident),_24,_25,_26=_1.scaleColor(_22.Ka,this.ambient),_27=_1.saturate(-4*_1.dot(_21,this.incident)),_28=_1.scaleColor(_27*_22.Kd,_1.diffuse(_21,this.lights)); |
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| 138 | if("phong" in _22){ |
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| 139 | _24=_1.scaleColor(_27*_22.Ks*_22.phong,_1.phong(_21,v,_22.phong_size,this.lights));
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| 140 | }else{
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| 141 | _24=_1.scaleColor(_27*_22.Ks,_1.specular(_21,v,_22.roughness,this.lights));
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| 142 | } |
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| 143 | _25=_1.scaleColor(_23.a,_1.addColor(_1.multiplyColor(_23,_1.addColor(_26,_28)),_1.multiplyColor(this.specular,_24)));
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| 144 | _25.a=_23.a; |
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| 145 | return _1.fromStdColor(_1.saturateColor(_25));
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| 146 | },npr:function(_29,_2a,_2b){ |
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| 147 | if(typeof _2a=="string"){ |
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| 148 | _2a=_1.finish[_2a]; |
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| 149 | } |
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| 150 | _2b=_1.toStdColor(_2b); |
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| 151 | _29=_1.faceforward(_1.normalize(_29),this.incident);
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| 152 | var _2c=_1.scaleColor(_2a.Ka,this.ambient),_2d=_1.saturate(-4*_1.dot(_29,this.incident)),_2e=_1.scaleColor(_2d*_2a.Kd,_1.diffuse(_29,this.lights)),_2f=_1.scaleColor(_2b.a,_1.multiplyColor(_2b,_1.addColor(_2c,_2e))),_30=_1.addColor(this.npr_cool,_1.scaleColor(this.npr_alpha,_2f)),_31=_1.addColor(this.npr_warm,_1.scaleColor(this.npr_beta,_2f)),d=(1+_1.dot(this.incident,_29))/2,_2f=_1.scaleColor(this.npr_scale,_1.addColor(_2f,_1.mixColor(_30,_31,d))); |
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| 153 | _2f.a=_2b.a; |
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| 154 | return _1.fromStdColor(_1.saturateColor(_2f));
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| 155 | }}); |
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| 156 | })(); |
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| 157 | dojox.gfx3d.lighting.finish={defaults:{Ka:0.1,Kd:0.6,Ks:0,roughness:0.05},dull:{Ka:0.1,Kd:0.6,Ks:0.5,roughness:0.15},shiny:{Ka:0.1,Kd:0.6,Ks:1,roughness:0.001},glossy:{Ka:0.1,Kd:0.6,Ks:1,roughness:0.0001},phong_dull:{Ka:0.1,Kd:0.6,Ks:0.5,phong:0.5,phong_size:1},phong_shiny:{Ka:0.1,Kd:0.6,Ks:1,phong:1,phong_size:200},phong_glossy:{Ka:0.1,Kd:0.6,Ks:1,phong:1,phong_size:300},luminous:{Ka:1,Kd:0,Ks:0,roughness:0.05},metalA:{Ka:0.35,Kd:0.3,Ks:0.8,roughness:1/20},metalB:{Ka:0.3,Kd:0.4,Ks:0.7,roughness:1/60},metalC:{Ka:0.25,Kd:0.5,Ks:0.8,roughness:1/80},metalD:{Ka:0.15,Kd:0.6,Ks:0.8,roughness:1/100},metalE:{Ka:0.1,Kd:0.7,Ks:0.8,roughness:1/120}};
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| 158 | } |