VTKLoader: Remove usage of Geometry

examples/js/loaders/VTKLoader.js

@@ -250,77 +250,51 @@ Object.assign( THREE.VTKLoader.prototype, THREE.EventDispatcher.prototype, {
 
 			}
 
-			var geometry;
-			var stagger = 'point';
+			var geometry = new THREE.BufferGeometry();
+			geometry.setIndex( indices );
+			geometry.addAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
 
-			if ( colors.length === indices.length ) {
+			if ( normals.length === positions.length ) {
 
-				stagger = 'cell';
+				geometry.addAttribute( 'normal', new THREE.Float32BufferAttribute( normals, 3 ) );
 
 			}
 
-			if ( stagger === 'point' ) {
+			if ( colors.length !== indices.length ) {
 
-				// Nodal. Use BufferGeometry
-				geometry = new THREE.BufferGeometry();
-				geometry.setIndex( new THREE.BufferAttribute( new Uint32Array( indices ), 1 ) );
-				geometry.addAttribute( 'position', new THREE.BufferAttribute( new Float32Array( positions ), 3 ) );
+				// stagger
 
 				if ( colors.length === positions.length ) {
 
-					geometry.addAttribute( 'color', new THREE.BufferAttribute( new Float32Array( colors ), 3 ) );
-
-				}
-
-				if ( normals.length === positions.length ) {
-
-					geometry.addAttribute( 'normal', new THREE.BufferAttribute( new Float32Array( normals ), 3 ) );
+					geometry.addAttribute( 'color', new THREE.Float32BufferAttribute( colors, 3 ) );
 
 				}
 
 			} else {
 
-				// Cell centered colors. The only way to attach a solid color to each triangle
-				// is to use Geometry, which is less efficient than BufferGeometry
-				geometry = new THREE.Geometry();
-
-				var numTriangles = indices.length / 3;
-				var numPoints = positions.length / 3;
-				var face;
-				var ia, ib, ic;
-				var x, y, z;
-				var r, g, b;
+				// cell
 
-				for ( var j = 0; j < numPoints; ++ j ) {
+				geometry = geometry.toNonIndexed();
+				var numTriangles = geometry.attributes.position.count / 3;
 
-					x = positions[ 3 * j + 0 ];
-					y = positions[ 3 * j + 1 ];
-					z = positions[ 3 * j + 2 ];
-					geometry.vertices.push( new THREE.Vector3( x, y, z ) );
+				if ( colors.length === ( numTriangles * 3 ) ) {
 
-				}
-
-				for ( var i = 0; i < numTriangles; ++ i ) {
-
-					ia = indices[ 3 * i + 0 ];
-					ib = indices[ 3 * i + 1 ];
-					ic = indices[ 3 * i + 2 ];
-					geometry.faces.push( new THREE.Face3( ia, ib, ic ) );
+					var newColors = [];
 
-				}
-
-				if ( colors.length === numTriangles * 3 ) {
+					for ( var i = 0; i < numTriangles; i ++ ) {
 
-					for ( var i = 0; i < numTriangles; ++ i ) {
+						var r = colors[ 3 * i + 0 ];
+						var g = colors[ 3 * i + 1 ];
+						var b = colors[ 3 * i + 2 ];
 
-						face = geometry.faces[ i ];
-						r = colors[ 3 * i + 0 ];
-						g = colors[ 3 * i + 1 ];
-						b = colors[ 3 * i + 2 ];
-						face.color = new THREE.Color().setRGB( r, g, b );
+						newColors.push( r, g, b );
+						newColors.push( r, g, b );
+						newColors.push( r, g, b );
 
 					}
 
+					geometry.addAttribute( 'color', new THREE.Float32BufferAttribute( newColors, 3 ) );
+
 				}
 
 			}