Add support for changing the attribute buffer type for TypedBackedArray

src/core/TypeBackedArray.js

@@ -26,7 +26,7 @@ export class TypeBackedArray {
 
 		if ( this.length !== 0 ) {
 
-			throw new Error();
+			throw new Error( 'TypeBackedArray: Cannot change the type while there is used data in the buffer.' );
 
 		}
 
@@ -38,7 +38,7 @@ export class TypeBackedArray {
 
 	setSize( size ) {
 
-		if ( size === this.array.length ) {
+		if ( this.array && size === this.array.length ) {
 
 			return;
 

src/core/TypedAttributeData.js

@@ -88,7 +88,17 @@ export class TypedAttributeData {
 
 			if ( referenceAttr.type !== type ) {
 
-				throw new Error( `TypedAttributeData: Array ${ name } already initialized with a different type.` );
+				for ( let i = 0, l = groupAttributes.length; i < l; i ++ ) {
+
+					groupAttributes[ i ][ name ].setType( type );
+
+				}
+
+				// } else {
+
+				// 	throw new Error( `TypedAttributeData: Array ${ name } already initialized with a different type.` );
+
+				// }
 
 			}
 

tests/BVH.Evaluator.test.js

@@ -22,8 +22,9 @@ describe( 'Evaluator', () => {
 		const result1 = evaluator.evaluate( brush1A, brush1B, SUBTRACTION );
 		const result2 = evaluator.evaluate( brush2A, brush2B, SUBTRACTION );
 
+		expect( result1.geometry.attributes.uv.array.constructor ).toBe( Float32Array );
+		expect( result2.geometry.attributes.uv.array.constructor ).toBe( Uint8Array );
 
 	} );
 
-
 } );

tests/Utils.TypeBackedArray.test.js

@@ -0,0 +1,5 @@
+describe( 'TypeBackedArray', () => {
+
+	it.todo( 'make tests' );
+
+} );

tests/Utils.TypedAttributeData.test.js

@@ -0,0 +1,5 @@
+describe( 'TypedAttributeData', () => {
+
+	it.todo( 'make tests' );
+
+} );