Mesh: Add support for second set of uvs in raycast().

src/objects/Mesh.js

@@ -168,7 +168,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 
 		}
 
-		function checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, uv, a, b, c ) {
+		function checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, uv, uv2, a, b, c ) {
 
 			vA.fromBufferAttribute( position, a );
 			vB.fromBufferAttribute( position, b );
@@ -219,6 +219,16 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 
 				}
 
+				if ( uv2 ) {
+
+					uvA.fromBufferAttribute( uv2, a );
+					uvB.fromBufferAttribute( uv2, b );
+					uvC.fromBufferAttribute( uv2, c );
+
+					intersection.uv2 = Triangle.getUV( intersectionPoint, vA, vB, vC, uvA, uvB, uvC, new Vector2() );
+
+				}
+
 				var face = new Face3( a, b, c );
 				Triangle.getNormal( vA, vB, vC, face.normal );
 
@@ -269,6 +279,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 				var position = geometry.attributes.position;
 				var morphPosition = geometry.morphAttributes.position;
 				var uv = geometry.attributes.uv;
+				var uv2 = geometry.attributes.uv2;
 				var groups = geometry.groups;
 				var drawRange = geometry.drawRange;
 				var i, j, il, jl;
@@ -295,7 +306,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 								b = index.getX( j + 1 );
 								c = index.getX( j + 2 );
 
-								intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, ray, position, morphPosition, uv, a, b, c );
+								intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, ray, position, morphPosition, uv, uv2, a, b, c );
 
 								if ( intersection ) {
 
@@ -320,7 +331,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 							b = index.getX( i + 1 );
 							c = index.getX( i + 2 );
 
-							intersection = checkBufferGeometryIntersection( this, material, raycaster, ray, position, morphPosition, uv, a, b, c );
+							intersection = checkBufferGeometryIntersection( this, material, raycaster, ray, position, morphPosition, uv, uv2, a, b, c );
 
 							if ( intersection ) {
 
@@ -353,7 +364,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 								b = j + 1;
 								c = j + 2;
 
-								intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, ray, position, morphPosition, uv, a, b, c );
+								intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, ray, position, morphPosition, uv, uv2, a, b, c );
 
 								if ( intersection ) {
 
@@ -378,7 +389,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 							b = i + 1;
 							c = i + 2;
 
-							intersection = checkBufferGeometryIntersection( this, material, raycaster, ray, position, morphPosition, uv, a, b, c );
+							intersection = checkBufferGeometryIntersection( this, material, raycaster, ray, position, morphPosition, uv, uv2, a, b, c );
 
 							if ( intersection ) {