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Add automatic cloth rebuild when simulation fails with NaN

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This commit is contained in:
Wojtek Figat
2023-07-17 15:17:22 +02:00
parent 1af076f180
commit 868084286c
1 changed files with 11 additions and 3 deletions
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14
Source/Engine/Physics/PhysX/PhysicsBackendPhysX.cpp
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@@ -186,14 +186,17 @@ struct ClothSettings
float CollisionThickness = 0.0f;
Cloth* Actor;
void UpdateBounds(const nv::cloth::Cloth* clothPhysX) const
bool UpdateBounds(const nv::cloth::Cloth* clothPhysX) const
{
// Get cloth particles bounds (in local-space)
const PxVec3& clothBoundsPos = clothPhysX->getBoundingBoxCenter();
const PxVec3& clothBoundsSize = clothPhysX->getBoundingBoxScale();
BoundingBox localBounds;
BoundingBox::FromPoints(P2C(clothBoundsPos - clothBoundsSize), P2C(clothBoundsPos + clothBoundsSize), localBounds);
CHECK(!localBounds.Minimum.IsNanOrInfinity() && !localBounds.Maximum.IsNanOrInfinity());
// Automatic cloth reset when simulation fails (eg. ends with NaN)
if (localBounds.Minimum.IsNanOrInfinity() || localBounds.Maximum.IsNanOrInfinity())
return true;
// Transform local-space bounds into world-space
const PxTransform clothPose(clothPhysX->getTranslation(), clothPhysX->getRotation());
@@ -206,6 +209,7 @@ struct ClothSettings
// Setup bounds
BoundingBox::FromPoints(boundsCorners, 8, const_cast<BoundingBox&>(Actor->GetBox()));
BoundingSphere::FromBox(Actor->GetBox(), const_cast<BoundingSphere&>(Actor->GetSphere()));
return false;
}
};
@@ -1677,14 +1681,18 @@ void PhysicsBackend::EndSimulateScene(void* scene)
{
PROFILE_CPU_NAMED("Post");
ScopeLock lock(ClothLocker);
Array<Cloth*> brokenCloths;
for (auto clothPhysX : scenePhysX->ClothsList)
{
const auto& clothSettings = Cloths[clothPhysX];
if (clothSettings.Culled)
continue;
clothSettings.UpdateBounds(clothPhysX);
if (clothSettings.UpdateBounds(clothPhysX))
brokenCloths.Add(clothSettings.Actor);
clothSettings.Actor->OnPostUpdate();
}
for (auto cloth : brokenCloths)
cloth->Rebuild();
}
}