From 4392cf14a9d0fc447cd2df82cdeb0e2520c1059c Mon Sep 17 00:00:00 2001
From: Fernando Serrano <fernandojsg@gmail.com>
Date: Fri, 23 Feb 2018 01:59:40 +0100
Subject: [PATCH] GLTFExporter: Add forceIndices

---
 examples/js/exporters/GLTFExporter.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/examples/js/exporters/GLTFExporter.js b/examples/js/exporters/GLTFExporter.js
index 49758cee37..4cb200c6b0 100644
--- a/examples/js/exporters/GLTFExporter.js
+++ b/examples/js/exporters/GLTFExporter.js
@@ -68,7 +68,8 @@ THREE.GLTFExporter.prototype = {
 			onlyVisible: true,
 			truncateDrawRange: true,
 			embedImages: true,
-			animations: []
+			animations: [],
+			forceIndices: false
 		};
 
 		options = Object.assign( {}, DEFAULT_OPTIONS, options );
@@ -809,6 +810,18 @@ THREE.GLTFExporter.prototype = {
 
 				gltfMesh.primitives[ 0 ].indices = processAccessor( geometry.index, geometry );
 
+			} else if ( options.forceIndices ) {
+
+				var numFaces = geometry.attributes.position.count;
+				var indices = new Uint32Array( numFaces );
+				for ( var i = 0; i < numFaces; i ++ ) {
+
+					indices[ i ] = i;
+
+				}
+
+				gltfMesh.primitives[ 0 ].indices = processAccessor( new THREE.Uint32BufferAttribute( indices, 1 ), geometry );
+
 			}
 
 			// We've just one primitive per mesh
-- 
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