Reuse functions

src/SilhouetteGenerator.js

@@ -1,8 +1,9 @@
 import { Path64, Clipper, FillRule } from 'clipper2-js';
-import { ShapeGeometry, Vector3, Shape, Vector2, Triangle, ShapeUtils, Line3, BufferGeometry } from 'three';
+import { ShapeGeometry, Vector3, Shape, Vector2, Triangle, ShapeUtils, BufferGeometry } from 'three';
 import { compressPoints } from './utils/compressPoints.js';
 import { triangleIsInsidePaths } from './utils/triangleIsInsidePaths.js';
 import { getSizeSortedTriList } from './utils/getSizeSortedTriList.js';
+import { getTriCount } from './utils/geometryUtils.js';
 
 const AREA_EPSILON = 1e-8;
 const UP_VECTOR = /* @__PURE__ */ new Vector3( 0, 1, 0 );
@@ -122,7 +123,7 @@ export class SilhouetteGenerator {
 
 		const index = geometry.index;
 		const posAttr = geometry.attributes.position;
-		const triCount = index ? index.count / 3 : posAttr.count / 3;
+		const triCount = getTriCount( geometry );
 		let overallPath = null;
 
 		const triList = getSizeSortedTriList( geometry );

src/utils/geometryUtils.js

@@ -0,0 +1,7 @@
+export function getTriCount( geometry ) {
+
+	const { index } = geometry;
+	const posAttr = geometry.attributes.position;
+	return index ? index.count / 3 : posAttr.count / 3;
+
+}

src/utils/getSizeSortedTriList.js

@@ -1,11 +1,12 @@
 import { Triangle } from 'three';
+import { getTriCount } from './geometryUtils.js';
 
 const _tri = new Triangle();
 export function getSizeSortedTriList( geometry ) {
 
 	const index = geometry.index;
 	const posAttr = geometry.attributes.position;
-	const triCount = index ? index.count / 3 : posAttr.count / 3;
+	const triCount = getTriCount( geometry );
 
 	return new Array( triCount )
 		.fill()