eometry) {
                return 0;
            }
            const count = geometry.elements.length / 3;
            if (count < 1) {
                return 0;
            }
            const positions = geometry.data['POSITION'];
            let totalArea = 0;
            for (let i = 0; i < count; i++) {
                const triangleIndex = [geometry.elements[i * 3], geometry.elements[i * 3 + 1], geometry.elements[i * 3 + 2]];
                const triangle = [
                    [positions[triangleIn