Added frontface direction constants.

These replace frontFaceDirection parameter strings in renderer.setFaceCulling( cullFace, frontFaceDirection ):

"cw"  => THREE.FrontFaceDirectionCW
"ccw" => THREE.FrontFaceDirectionCCW

See related cullFace constants changes in #2683

build/three.js

@@ -88,6 +88,9 @@ THREE.CullFaceBack = 1;
 THREE.CullFaceFront = 2;
 THREE.CullFaceFrontBack = 3;
 
+THREE.FrontFaceDirectionCW = 0;
+THREE.FrontFaceDirectionCCW = 1;
+
 // MATERIAL CONSTANTS
 
 // side
@@ -21558,7 +21561,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	// GL state setting
 
-	this.setFaceCulling = function ( cullFace, frontFace ) {
+	this.setFaceCulling = function ( cullFace, frontFaceDirection ) {
 
 		if ( cullFace === THREE.CullFaceNone ) {
 
@@ -21566,13 +21569,13 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		} else {
 
-			if ( !frontFace || frontFace === "ccw" ) {
+			if ( frontFaceDirection === THREE.FrontFaceDirectionCW ) {
 
-				_gl.frontFace( _gl.CCW );
+				_gl.frontFace( _gl.CW );
 
 			} else {
 
-				_gl.frontFace( _gl.CW );
+				_gl.frontFace( _gl.CCW );
 
 			}
 

src/Three.js

@@ -88,6 +88,9 @@ THREE.CullFaceBack = 1;
 THREE.CullFaceFront = 2;
 THREE.CullFaceFrontBack = 3;
 
+THREE.FrontFaceDirectionCW = 0;
+THREE.FrontFaceDirectionCCW = 1;
+
 // MATERIAL CONSTANTS
 
 // side

src/renderers/WebGLRenderer.js

@@ -5938,7 +5938,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	// GL state setting
 
-	this.setFaceCulling = function ( cullFace, frontFace ) {
+	this.setFaceCulling = function ( cullFace, frontFaceDirection ) {
 
 		if ( cullFace === THREE.CullFaceNone ) {
 
@@ -5946,13 +5946,13 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		} else {
 
-			if ( !frontFace || frontFace === "ccw" ) {
+			if ( frontFaceDirection === THREE.FrontFaceDirectionCW ) {
 
-				_gl.frontFace( _gl.CCW );
+				_gl.frontFace( _gl.CW );
 
 			} else {
 
-				_gl.frontFace( _gl.CW );
+				_gl.frontFace( _gl.CCW );
 
 			}