Clean up.

Author: linbingquan

examples/jsm/lines/LineGeometry.js

@@ -7,6 +7,8 @@ class LineGeometry extends LineSegmentsGeometry {
 
 		super();
 
+		Object.defineProperty( this, 'isLineGeometry', { value: true } );
+
 		this.type = 'LineGeometry';
 
 	}
@@ -91,6 +93,4 @@ class LineGeometry extends LineSegmentsGeometry {
 
 }
 
-LineGeometry.prototype.isLineGeometry = true;
-
 export { LineGeometry };

examples/jsm/lines/LineSegmentsGeometry.js

@@ -18,6 +18,8 @@ class LineSegmentsGeometry extends InstancedBufferGeometry {
 
 		super();
 
+		Object.defineProperty( this, 'isLineSegmentsGeometry', { value: true } );
+
 		this.type = 'LineSegmentsGeometry';
 
 		var positions = [ - 1, 2, 0, 1, 2, 0, - 1, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 0, - 1, - 1, 0, 1, - 1, 0 ];
@@ -244,6 +246,4 @@ class LineSegmentsGeometry extends InstancedBufferGeometry {
 
 }
 
-LineSegmentsGeometry.prototype.isLineSegmentsGeometry = true;
-
 export { LineSegmentsGeometry };

examples/jsm/lines/WireframeGeometry2.js

@@ -9,6 +9,8 @@ class WireframeGeometry2 extends LineSegmentsGeometry {
 
 		super();
 
+		Object.defineProperty( this, 'isWireframeGeometry2', { value: true } );
+
 		this.type = 'WireframeGeometry2';
 
 		this.fromWireframeGeometry( new WireframeGeometry( geometry ) );
@@ -19,6 +21,4 @@ class WireframeGeometry2 extends LineSegmentsGeometry {
 
 }
 
-WireframeGeometry.prototype.isWireframeGeometry2 = true;
-
 export { WireframeGeometry2 };

src/core/BufferAttribute.js

@@ -17,6 +17,8 @@ class BufferAttribute {
 
 		}
 
+		Object.defineProperty( this, 'isBufferAttribute', { value: true } );
+
 		this.name = '';
 
 		this.array = array;
@@ -401,8 +403,6 @@ class BufferAttribute {
 
 }
 
-BufferAttribute.prototype.isBufferAttribute = true;
-
 //
 
 class Int8BufferAttribute extends BufferAttribute {

src/core/Geometry.js

@@ -21,6 +21,7 @@ class Geometry extends EventDispatcher {
 
 		super();
 
+		Object.defineProperty( this, 'isGeometry', { value: true } );
 		Object.defineProperty( this, 'id', { value: _geometryId += 2 } );
 
 		this.uuid = MathUtils.generateUUID();
@@ -1376,6 +1377,4 @@ class Geometry extends EventDispatcher {
 
 }
 
-Geometry.prototype.isGeometry = true;
-
 export { Geometry };

src/core/InstancedBufferAttribute.js

@@ -6,6 +6,8 @@ class InstancedBufferAttribute extends BufferAttribute {
 
 		super( array, itemSize, normalized );
 
+		Object.defineProperty( this, 'isInstancedBufferAttribute', { value: true } );
+
 		if ( typeof ( normalized ) === 'number' ) {
 
 			meshPerAttribute = normalized;
@@ -44,6 +46,4 @@ class InstancedBufferAttribute extends BufferAttribute {
 
 }
 
-InstancedBufferAttribute.prototype.isInstancedBufferAttribute = true;
-
 export { InstancedBufferAttribute };

src/core/InstancedBufferGeometry.js

@@ -6,6 +6,8 @@ class InstancedBufferGeometry extends BufferGeometry {
 
 		super();
 
+		Object.defineProperty( this, 'isInstancedBufferGeometry', { value: true } );
+
 		this.type = 'InstancedBufferGeometry';
 		this.instanceCount = Infinity;
 
@@ -41,6 +43,4 @@ class InstancedBufferGeometry extends BufferGeometry {
 
 }
 
-InstancedBufferGeometry.prototype.isInstancedBufferGeometry = true;
-
 export { InstancedBufferGeometry };

src/core/InstancedInterleavedBuffer.js

@@ -6,6 +6,8 @@ class InstancedInterleavedBuffer extends InterleavedBuffer {
 
 		super( array, stride );
 
+		Object.defineProperty( this, 'isInstancedInterleavedBuffer', { value: true } );
+
 		this.meshPerAttribute = meshPerAttribute || 1;
 
 	}
@@ -43,6 +45,4 @@ class InstancedInterleavedBuffer extends InterleavedBuffer {
 
 }
 
-InstancedInterleavedBuffer.prototype.isInstancedInterleavedBuffer = true;
-
 export { InstancedInterleavedBuffer };

src/core/InterleavedBufferAttribute.js

@@ -7,6 +7,8 @@ class InterleavedBufferAttribute {
 
 	constructor( interleavedBuffer, itemSize, offset, normalized ) {
 
+		Object.defineProperty( this, 'isInterleavedBufferAttribute', { value: true } );
+
 		this.name = '';
 
 		this.data = interleavedBuffer;
@@ -247,6 +249,4 @@ class InterleavedBufferAttribute {
 
 }
 
-InterleavedBufferAttribute.prototype.isInterleavedBufferAttribute = true;
-
 export { InterleavedBufferAttribute };