From 41ca8b9e59f1b5d6f7e7a4cd62de92bae1d1e587 Mon Sep 17 00:00:00 2001
From: Xuchen Han <xuchenhan2015@u.northwestern.edu>
Date: Fri, 6 Mar 2020 16:29:32 -0800
Subject: [PATCH] More parameter tuning for cloth-like behavior

---
 examples/DeformableDemo/DeformableSelfCollision.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/examples/DeformableDemo/DeformableSelfCollision.cpp b/examples/DeformableDemo/DeformableSelfCollision.cpp
index 7b8fd9c3a..a5999084c 100644
--- a/examples/DeformableDemo/DeformableSelfCollision.cpp
+++ b/examples/DeformableDemo/DeformableSelfCollision.cpp
@@ -155,8 +155,7 @@ void DeformableSelfCollision::addCloth(btVector3 origin)
 
     
     psb->getCollisionShape()->setMargin(0.0075);
-    psb->generateBendingConstraints(2);
-    psb->generateBendingConstraints(2);
+    psb->generateBendingConstraints(3);
     psb->setTotalMass(.5);
     psb->m_cfg.kKHR = 1; // collision hardness with kinematic objects
     psb->m_cfg.kCHR = 1; // collision hardness with rigid body
@@ -171,8 +170,8 @@ void DeformableSelfCollision::addCloth(btVector3 origin)
     getDeformableDynamicsWorld()->addSoftBody(psb);
     psb->setSelfCollision(true);
     
-    btDeformableMassSpringForce* mass_spring = new btDeformableMassSpringForce(3,0.2, true);
-    psb->setSpringStiffness(3);
+    btDeformableMassSpringForce* mass_spring = new btDeformableMassSpringForce(1.5,0.1, true);
+    psb->setSpringStiffness(1);
     getDeformableDynamicsWorld()->addForce(psb, mass_spring);
     m_forces.push_back(mass_spring);
     btVector3 gravity = btVector3(0, -9.8, 0);