hkpStiffSpringConstraintData* spring= new hkpStiffSpringConstraintData(); 
for (l1 = 0; l1 < v; l1++)	// v
	for (l2 = 0; l2 < (u - 1); l2++) {
		int index0 = (l1 * u) + l2;
		int index1 = (l1 * u) + l2 + 1;
 		hkpRigidBody* r0 = masses[index0];
		hkpRigidBody* r1 = masses[index1];
		hkVector4f r0Pos = r0->getTransform().getTranslation();
		hkVector4f r1Pos = r1->getTransform().getTranslation();
		spring->setInWorldSpace(r0->getTransform(), r1->getTransform(), r0Pos, r1Pos);
		hkpConstraintInstance* constraint = new hkpConstraintInstance(r0, r1, spring);
			g_pWorld->addConstraint(constraint);
		constraint->removeReference(); 
		indices.push_back(index0);
		indices.push_back(index1);
	}

// Vertical
for (l1 = 0; l1 < (u); l1++)
	for (l2 = 0; l2 < (v - 1); l2++) { 
		int index0 = (l2 * u) + l1;
		int index1 = ((l2 + 1) * u) + l1;
 		hkpRigidBody* r0 = masses[index0];
		hkpRigidBody* r1 = masses[index1];
		hkVector4f r0Pos = r0->getTransform().getTranslation();
		hkVector4f r1Pos = r1->getTransform().getTranslation();
		spring->setInWorldSpace(r0->getTransform(), r1->getTransform(), r0Pos, r1Pos);
		hkpConstraintInstance* constraint = new hkpConstraintInstance(r0, r1, spring);
			g_pWorld->addConstraint(constraint);
		constraint->removeReference(); 

		indices.push_back(index0);
		indices.push_back(index1);
	} 

spring->removeReference();