From 39db179b8266186afaaca1df65642debd877058f Mon Sep 17 00:00:00 2001
From: alteredq <postfilter@gmail.com>
Date: Sat, 22 Dec 2012 04:26:22 +0100
Subject: [PATCH] WebGLDeferredRenderer: made attenuation parameters properties
 of AreaLight instead of hardcoded constants.

---
 build/three.js                                 |  4 ++++
 build/three.min.js                             |  2 +-
 examples/js/ShaderDeferred.js                  | 17 +++++++++++------
 examples/js/renderers/WebGLDeferredRenderer.js |  4 ++++
 src/lights/AreaLight.js                        |  4 ++++
 5 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/build/three.js b/build/three.js
index 685f5c4012..a41ddb91e7 100644
--- a/build/three.js
+++ b/build/three.js
@@ -7991,6 +7991,10 @@ THREE.AreaLight = function ( hex, intensity ) {
 	this.width = 1.0;
 	this.height = 1.0;
 
+	this.constantAttenuation = 1.5;
+	this.linearAttenuation = 0.5;
+	this.quadraticAttenuation = 0.1;
+
 };
 
 THREE.AreaLight.prototype = Object.create( THREE.Light.prototype );
diff --git a/build/three.min.js b/build/three.min.js
index 746f708db3..92efee085c 100644
--- a/build/three.min.js
+++ b/build/three.min.js
@@ -163,7 +163,7 @@ this.attributes.uv)console.warn("Missing required attributes (index, position, n
 var n,p,m,r,s,l,q,u,B,x,t,F,C,z,A,f=new THREE.Vector3,g=new THREE.Vector3,H,G,I,$,D,L,y,K=this.offsets;I=0;for($=K.length;I<$;++I){G=K[I].start;D=K[I].count;var J=K[I].index;H=G;for(G+=D;H<G;H+=3)D=J+b[H],L=J+b[H+1],y=J+b[H+2],n=c[3*D],p=c[3*D+1],m=c[3*D+2],r=c[3*L],s=c[3*L+1],l=c[3*L+2],q=c[3*y],u=c[3*y+1],B=c[3*y+2],x=e[2*D],t=e[2*D+1],F=e[2*L],C=e[2*L+1],z=e[2*y],A=e[2*y+1],r-=n,n=q-n,s-=p,p=u-p,l-=m,m=B-m,F-=x,x=z-x,C-=t,t=A-t,A=1/(F*t-x*C),f.set((t*r-C*n)*A,(t*s-C*p)*A,(t*l-C*m)*A),g.set((F*
 n-x*r)*A,(F*p-x*s)*A,(F*m-x*l)*A),i[D].addSelf(f),i[L].addSelf(f),i[y].addSelf(f),k[D].addSelf(g),k[L].addSelf(g),k[y].addSelf(g)}var R=new THREE.Vector3,P=new THREE.Vector3,ca=new THREE.Vector3,xa=new THREE.Vector3,M,pa,ya;I=0;for($=K.length;I<$;++I){G=K[I].start;D=K[I].count;J=K[I].index;H=G;for(G+=D;H<G;H+=3)D=J+b[H],L=J+b[H+1],y=J+b[H+2],a(D),a(L),a(y)}this.tangentsNeedUpdate=this.hasTangents=!0}},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.Camera=function(){THREE.Object3D.call(this);this.matrixWorldInverse=new THREE.Matrix4;this.projectionMatrix=new THREE.Matrix4;this.projectionMatrixInverse=new THREE.Matrix4};THREE.Camera.prototype=Object.create(THREE.Object3D.prototype);THREE.Camera.prototype.lookAt=function(a){this.matrix.lookAt(this.position,a,this.up);!0===this.rotationAutoUpdate&&(!1===this.useQuaternion?this.rotation.setEulerFromRotationMatrix(this.matrix,this.eulerOrder):this.quaternion.copy(this.matrix.decompose()[1]))};THREE.OrthographicCamera=function(a,b,c,d,e,f){THREE.Camera.call(this);this.left=a;this.right=b;this.top=c;this.bottom=d;this.near=void 0!==e?e:0.1;this.far=void 0!==f?f:2E3;this.updateProjectionMatrix()};THREE.OrthographicCamera.prototype=Object.create(THREE.Camera.prototype);THREE.OrthographicCamera.prototype.updateProjectionMatrix=function(){this.projectionMatrix.makeOrthographic(this.left,this.right,this.top,this.bottom,this.near,this.far)};THREE.PerspectiveCamera=function(a,b,c,d){THREE.Camera.call(this);this.fov=void 0!==a?a:50;this.aspect=void 0!==b?b:1;this.near=void 0!==c?c:0.1;this.far=void 0!==d?d:2E3;this.updateProjectionMatrix()};THREE.PerspectiveCamera.prototype=Object.create(THREE.Camera.prototype);THREE.PerspectiveCamera.prototype.setLens=function(a,b){void 0===b&&(b=24);this.fov=2*THREE.Math.radToDeg(Math.atan(b/(2*a)));this.updateProjectionMatrix()};
 THREE.PerspectiveCamera.prototype.setViewOffset=function(a,b,c,d,e,f){this.fullWidth=a;this.fullHeight=b;this.x=c;this.y=d;this.width=e;this.height=f;this.updateProjectionMatrix()};
-THREE.PerspectiveCamera.prototype.updateProjectionMatrix=function(){if(this.fullWidth){var a=this.fullWidth/this.fullHeight,b=Math.tan(THREE.Math.degToRad(0.5*this.fov))*this.near,c=-b,d=a*c,a=Math.abs(a*b-d),c=Math.abs(b-c);this.projectionMatrix.makeFrustum(d+this.x*a/this.fullWidth,d+(this.x+this.width)*a/this.fullWidth,b-(this.y+this.height)*c/this.fullHeight,b-this.y*c/this.fullHeight,this.near,this.far)}else this.projectionMatrix.makePerspective(this.fov,this.aspect,this.near,this.far)};THREE.Light=function(a){THREE.Object3D.call(this);this.color=new THREE.Color(a)};THREE.Light.prototype=Object.create(THREE.Object3D.prototype);THREE.AmbientLight=function(a){THREE.Light.call(this,a)};THREE.AmbientLight.prototype=Object.create(THREE.Light.prototype);THREE.AreaLight=function(a,b){THREE.Light.call(this,a);this.normal=new THREE.Vector3(0,-1,0);this.right=new THREE.Vector3(1,0,0);this.intensity=void 0!==b?b:1;this.height=this.width=1};THREE.AreaLight.prototype=Object.create(THREE.Light.prototype);THREE.DirectionalLight=function(a,b){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,1,0);this.target=new THREE.Object3D;this.intensity=void 0!==b?b:1;this.onlyShadow=this.castShadow=!1;this.shadowCameraNear=50;this.shadowCameraFar=5E3;this.shadowCameraLeft=-500;this.shadowCameraTop=this.shadowCameraRight=500;this.shadowCameraBottom=-500;this.shadowCameraVisible=!1;this.shadowBias=0;this.shadowDarkness=0.5;this.shadowMapHeight=this.shadowMapWidth=512;this.shadowCascade=!1;this.shadowCascadeOffset=
+THREE.PerspectiveCamera.prototype.updateProjectionMatrix=function(){if(this.fullWidth){var a=this.fullWidth/this.fullHeight,b=Math.tan(THREE.Math.degToRad(0.5*this.fov))*this.near,c=-b,d=a*c,a=Math.abs(a*b-d),c=Math.abs(b-c);this.projectionMatrix.makeFrustum(d+this.x*a/this.fullWidth,d+(this.x+this.width)*a/this.fullWidth,b-(this.y+this.height)*c/this.fullHeight,b-this.y*c/this.fullHeight,this.near,this.far)}else this.projectionMatrix.makePerspective(this.fov,this.aspect,this.near,this.far)};THREE.Light=function(a){THREE.Object3D.call(this);this.color=new THREE.Color(a)};THREE.Light.prototype=Object.create(THREE.Object3D.prototype);THREE.AmbientLight=function(a){THREE.Light.call(this,a)};THREE.AmbientLight.prototype=Object.create(THREE.Light.prototype);THREE.AreaLight=function(a,b){THREE.Light.call(this,a);this.normal=new THREE.Vector3(0,-1,0);this.right=new THREE.Vector3(1,0,0);this.intensity=void 0!==b?b:1;this.height=this.width=1;this.constantAttenuation=1.5;this.linearAttenuation=0.5;this.quadraticAttenuation=0.1};THREE.AreaLight.prototype=Object.create(THREE.Light.prototype);THREE.DirectionalLight=function(a,b){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,1,0);this.target=new THREE.Object3D;this.intensity=void 0!==b?b:1;this.onlyShadow=this.castShadow=!1;this.shadowCameraNear=50;this.shadowCameraFar=5E3;this.shadowCameraLeft=-500;this.shadowCameraTop=this.shadowCameraRight=500;this.shadowCameraBottom=-500;this.shadowCameraVisible=!1;this.shadowBias=0;this.shadowDarkness=0.5;this.shadowMapHeight=this.shadowMapWidth=512;this.shadowCascade=!1;this.shadowCascadeOffset=
 new THREE.Vector3(0,0,-1E3);this.shadowCascadeCount=2;this.shadowCascadeBias=[0,0,0];this.shadowCascadeWidth=[512,512,512];this.shadowCascadeHeight=[512,512,512];this.shadowCascadeNearZ=[-1,0.99,0.998];this.shadowCascadeFarZ=[0.99,0.998,1];this.shadowCascadeArray=[];this.shadowMatrix=this.shadowCamera=this.shadowMapSize=this.shadowMap=null};THREE.DirectionalLight.prototype=Object.create(THREE.Light.prototype);THREE.HemisphereLight=function(a,b,c){THREE.Light.call(this,a);this.groundColor=new THREE.Color(b);this.position=new THREE.Vector3(0,100,0);this.intensity=void 0!==c?c:1};THREE.HemisphereLight.prototype=Object.create(THREE.Light.prototype);THREE.PointLight=function(a,b,c){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,0,0);this.intensity=void 0!==b?b:1;this.distance=void 0!==c?c:0};THREE.PointLight.prototype=Object.create(THREE.Light.prototype);THREE.SpotLight=function(a,b,c,d,e){THREE.Light.call(this,a);this.position=new THREE.Vector3(0,1,0);this.target=new THREE.Object3D;this.intensity=void 0!==b?b:1;this.distance=void 0!==c?c:0;this.angle=void 0!==d?d:Math.PI/2;this.exponent=void 0!==e?e:10;this.onlyShadow=this.castShadow=!1;this.shadowCameraNear=50;this.shadowCameraFar=5E3;this.shadowCameraFov=50;this.shadowCameraVisible=!1;this.shadowBias=0;this.shadowDarkness=0.5;this.shadowMapHeight=this.shadowMapWidth=512;this.shadowMatrix=this.shadowCamera=
 this.shadowMapSize=this.shadowMap=null};THREE.SpotLight.prototype=Object.create(THREE.Light.prototype);THREE.Loader=function(a){this.statusDomElement=(this.showStatus=a)?THREE.Loader.prototype.addStatusElement():null;this.onLoadStart=function(){};this.onLoadProgress=function(){};this.onLoadComplete=function(){}};
 THREE.Loader.prototype={constructor:THREE.Loader,crossOrigin:"anonymous",addStatusElement:function(){var a=document.createElement("div");a.style.position="absolute";a.style.right="0px";a.style.top="0px";a.style.fontSize="0.8em";a.style.textAlign="left";a.style.background="rgba(0,0,0,0.25)";a.style.color="#fff";a.style.width="120px";a.style.padding="0.5em 0.5em 0.5em 0.5em";a.style.zIndex=1E3;a.innerHTML="Loading ...";return a},updateProgress:function(a){var b="Loaded ",b=a.total?b+((100*a.loaded/
diff --git a/examples/js/ShaderDeferred.js b/examples/js/ShaderDeferred.js
index df1ce85d6f..21f052ad97 100644
--- a/examples/js/ShaderDeferred.js
+++ b/examples/js/ShaderDeferred.js
@@ -842,8 +842,12 @@ THREE.ShaderDeferred = {
 			lightColor: 	{ type: "c", value: new THREE.Color( 0x000000 ) },
 			lightIntensity: { type: "f", value: 1.0 },
 
-			lightWidth: { type: "f", value: 1.0 },
-			lightHeight: { type: "f", value: 1.0 }
+			lightWidth:  { type: "f", value: 1.0 },
+			lightHeight: { type: "f", value: 1.0 },
+
+			constantAttenuation:  { type: "f", value: 1.5 },
+			linearAttenuation:    { type: "f", value: 0.5 },
+			quadraticAttenuation: { type: "f", value: 0.1 }
 
 		},
 
@@ -860,6 +864,10 @@ THREE.ShaderDeferred = {
 			"uniform float lightWidth;",
 			"uniform float lightHeight;",
 
+			"uniform float constantAttenuation;",
+			"uniform float linearAttenuation;",
+			"uniform float quadraticAttenuation;",
+
 			"uniform float lightIntensity;",
 			"uniform vec3 lightColor;",
 
@@ -890,10 +898,7 @@ THREE.ShaderDeferred = {
 
 			"float calculateAttenuation( float dist ) {",
 
-				"float constAtten = 1.5;",
-				"float linAtten = 0.5;",
-				"float quadAtten = 0.1;",
-				"return ( 1.0 / ( constAtten + linAtten * dist + quadAtten * dist * dist ) );",
+				"return ( 1.0 / ( constantAttenuation + linearAttenuation * dist + quadraticAttenuation * dist * dist ) );",
 
 			"}",
 
diff --git a/examples/js/renderers/WebGLDeferredRenderer.js b/examples/js/renderers/WebGLDeferredRenderer.js
index 25451eb372..94ab05142b 100644
--- a/examples/js/renderers/WebGLDeferredRenderer.js
+++ b/examples/js/renderers/WebGLDeferredRenderer.js
@@ -650,6 +650,10 @@ THREE.WebGLDeferredRenderer = function ( parameters ) {
 		uniforms[ "lightWidth" ].value = light.width;
 		uniforms[ "lightHeight" ].value = light.height;
 
+		uniforms[ "constantAttenuation" ].value = light.constantAttenuation;
+		uniforms[ "linearAttenuation" ].value = light.linearAttenuation;
+		uniforms[ "quadraticAttenuation" ].value = light.quadraticAttenuation;
+
 		// linear space colors
 
 		var intensity = light.intensity * light.intensity;
diff --git a/src/lights/AreaLight.js b/src/lights/AreaLight.js
index 120efea5a1..28e466681d 100644
--- a/src/lights/AreaLight.js
+++ b/src/lights/AreaLight.js
@@ -15,6 +15,10 @@ THREE.AreaLight = function ( hex, intensity ) {
 	this.width = 1.0;
 	this.height = 1.0;
 
+	this.constantAttenuation = 1.5;
+	this.linearAttenuation = 0.5;
+	this.quadraticAttenuation = 0.1;
+
 };
 
 THREE.AreaLight.prototype = Object.create( THREE.Light.prototype );
-- 
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