Version: 2019.2

Cloth.bendingStiffness

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public float bendingStiffness ;

Description

Жёсткость сгибания ткани.

Must be between zero and one. Setting the value to zero disables bending stiffness simulation.
In many cases, when you want a cloth to be more stiff, actually reducing the number of vertices will get you better results - and performance.

using UnityEngine;

public class Example : MonoBehaviour { void Start() { GetComponent<Cloth>().bendingStiffness = 1; } }