Fix PMX parse bug of MMDLoader (#9127)

examples/js/loaders/MMDLoader.js

@@ -989,7 +989,7 @@ THREE.MMDLoader.prototype.parsePmx = function ( buffer ) {
 		var parseFace = function () {
 
 			var p = {};
-			p.indices = dv.getIndexArray( metadata.vertexIndexSize, 3 );
+			p.indices = dv.getIndexArray( metadata.vertexIndexSize, 3, true );
 			return p;
 
 		};
@@ -1214,7 +1214,7 @@ THREE.MMDLoader.prototype.parsePmx = function ( buffer ) {
 				} else if ( p.type === 1 ) {  // vertex morph
 
 					var m = {};
-					m.index = dv.getIndex( pmx.metadata.vertexIndexSize );
+					m.index = dv.getIndex( pmx.metadata.vertexIndexSize, true );
 					m.position = dv.getFloat32Array( 3 );
 					p.elements.push( m );
 
@@ -1229,7 +1229,7 @@ THREE.MMDLoader.prototype.parsePmx = function ( buffer ) {
 				} else if ( p.type === 3 ) {  // uv morph
 
 					var m = {};
-					m.index = dv.getIndex( pmx.metadata.vertexIndexSize );
+					m.index = dv.getIndex( pmx.metadata.vertexIndexSize, true );
 					m.uv = dv.getFloat32Array( 4 );
 					p.elements.push( m );
 
@@ -1268,7 +1268,6 @@ THREE.MMDLoader.prototype.parsePmx = function ( buffer ) {
 
 		}
 
-
 	};
 
 	var parseFrames = function () {
@@ -3449,18 +3448,18 @@ THREE.MMDLoader.DataView.prototype = {
 
 	},
 
-	getIndex: function ( type ) {
+	getIndex: function ( type, isUnsigned ) {
 
 		switch ( type ) {
 
 			case 1:
-				return this.getInt8();
+				return ( isUnsigned === true ) ? this.getUint8() : this.getInt8();
 
 			case 2:
-				return this.getInt16();
+				return ( isUnsigned === true ) ? this.getUint16() : this.getInt16();
 
 			case 4:
-				return this.getInt32();
+				return this.getInt32(); // No Uint32
 
 			default:
 				throw 'unknown number type ' + type + ' exception.';
@@ -3469,13 +3468,13 @@ THREE.MMDLoader.DataView.prototype = {
 
 	},
 
-	getIndexArray: function ( type, size ) {
+	getIndexArray: function ( type, size, isUnsigned ) {
 
 		var a = [];
 
 		for ( var i = 0; i < size; i++ ) {
 
-			a.push( this.getIndex( type ) );
+			a.push( this.getIndex( type, isUnsigned ) );
 
 		}