GoaLitiuM/FlaxEngine
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add cloth painting tools to Editor

Browse Source
This commit is contained in:
Wojtek Figat
2023-07-13 23:30:37 +02:00
parent 3b90e75307
commit 24c03c0e4b
15 changed files with 873 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
Source/Engine/Physics/PhysX/PhysicsBackendPhysX.cpp
View File

@@ -129,7 +129,7 @@ public:
}
};
class ProfilerPhysX : public physx::PxProfilerCallback
class ProfilerPhysX : public PxProfilerCallback
{
public:
void* zoneStart(const char* eventName, bool detached, uint64_t contextId) override
@@ -162,6 +162,7 @@ struct ClothSettings
const PxVec3& clothBoundsSize = clothPhysX->getBoundingBoxScale();
BoundingBox localBounds;
BoundingBox::FromPoints(P2C(clothBoundsPos - clothBoundsSize), P2C(clothBoundsPos + clothBoundsSize), localBounds);
CHECK(!localBounds.Minimum.IsNanOrInfinity() && !localBounds.Maximum.IsNanOrInfinity());
// Transform local-space bounds into world-space
const PxTransform clothPose(clothPhysX->getTranslation(), clothPhysX->getRotation());
@@ -3340,12 +3341,14 @@ void* PhysicsBackend::CreateCloth(const PhysicsClothDesc& desc)
meshDesc.points.data = desc.VerticesData;
meshDesc.points.stride = desc.VerticesStride;
meshDesc.points.count = desc.VerticesCount;
meshDesc.invMasses.data = desc.InvMassesData;
meshDesc.invMasses.stride = desc.InvMassesStride;
meshDesc.invMasses.count = desc.InvMassesData ? desc.VerticesCount : 0;
meshDesc.triangles.data = desc.IndicesData;
meshDesc.triangles.stride = desc.IndicesStride * 3;
meshDesc.triangles.count = desc.IndicesCount / 3;
if (desc.IndicesStride == sizeof(uint16))
meshDesc.flags |= nv::cloth::MeshFlag::e16_BIT_INDICES;
// TODO: provide invMasses data
const Float3 gravity(PhysicsSettings::Get()->DefaultGravity);
nv::cloth::Vector<int32_t>::Type phaseTypeInfo;
// TODO: automatically reuse fabric from existing cloths (simply check for input data used for computations to improve perf when duplicating cloths or with prefab)
@@ -3359,10 +3362,17 @@ void* PhysicsBackend::CreateCloth(const PhysicsClothDesc& desc)
// Create cloth object
static_assert(sizeof(Float4) == sizeof(PxVec4), "Size mismatch");
Array<Float4> initialState;
// TODO: provide initial state for cloth from the owner (eg. current skinned mesh position)
initialState.Resize((int32)desc.VerticesCount);
for (uint32 i = 0; i < desc.VerticesCount; i++)
initialState.Get()[i] = Float4(*(Float3*)((byte*)desc.VerticesData + i * desc.VerticesStride), 1.0f); // TODO: set .w to invMass of that vertex
if (desc.InvMassesData)
{
for (uint32 i = 0; i < desc.VerticesCount; i++)
initialState.Get()[i] = Float4(*(Float3*)((byte*)desc.VerticesData + i * desc.VerticesStride), *(float*)((byte*)desc.InvMassesData + i * desc.InvMassesStride));
}
else
{
for (uint32 i = 0; i < desc.VerticesCount; i++)
initialState.Get()[i] = Float4(*(Float3*)((byte*)desc.VerticesData + i * desc.VerticesStride), 1.0f);
}
const nv::cloth::Range<PxVec4> initialParticlesRange((PxVec4*)initialState.Get(), (PxVec4*)initialState.Get() + initialState.Count());
nv::cloth::Cloth* clothPhysX = ClothFactory->createCloth(initialParticlesRange, *fabric);
fabric->decRefCount();
@@ -3371,6 +3381,14 @@ void* PhysicsBackend::CreateCloth(const PhysicsClothDesc& desc)
LOG(Error, "createCloth failed");
return nullptr;
}
if (desc.MaxDistancesData)
{
nv::cloth::Range<PxVec4> motionConstraints = clothPhysX->getMotionConstraints();
ASSERT(motionConstraints.size() == desc.VerticesCount);
for (uint32 i = 0; i < desc.VerticesCount; i++)
motionConstraints.begin()[i] = PxVec4(*(PxVec3*)((byte*)desc.VerticesData + i * desc.VerticesStride), *(float*)((byte*)desc.MaxDistancesData + i * desc.MaxDistancesStride));
}
clothPhysX->setUserData(desc.Actor);
// Setup settings
FabricSettings fabricSettings;
@@ -3438,6 +3456,7 @@ void PhysicsBackend::SetClothSimulationSettings(void* cloth, const void* setting
auto clothPhysX = (nv::cloth::Cloth*)cloth;
const auto& settings = *(const Cloth::SimulationSettings*)settingsPtr;
clothPhysX->setSolverFrequency(settings.SolverFrequency);
clothPhysX->setMotionConstraintScaleBias(settings.MaxDistance, 0.0f);
clothPhysX->setWindVelocity(C2P(settings.WindVelocity));
}
@@ -3510,13 +3529,65 @@ void PhysicsBackend::UnlockClothParticles(void* cloth)
clothPhysX->unlockParticles();
}
Span<const Float4> PhysicsBackend::GetClothCurrentParticles(void* cloth)
Span<const Float4> PhysicsBackend::GetClothParticles(void* cloth)
{
auto clothPhysX = (const nv::cloth::Cloth*)cloth;
const nv::cloth::MappedRange<const PxVec4> range = clothPhysX->getCurrentParticles();
return Span<const Float4>((const Float4*)range.begin(), (int32)range.size());
}
void PhysicsBackend::SetClothParticles(void* cloth, Span<const Float4> value, Span<const Float3> positions, Span<const float> invMasses)
{
auto clothPhysX = (nv::cloth::Cloth*)cloth;
nv::cloth::MappedRange<PxVec4> range = clothPhysX->getCurrentParticles();
const uint32_t size = range.size();
PxVec4* dst = range.begin();
if (value.IsValid())
{
// Set XYZW
CHECK((uint32_t)value.Length() >= size);
Platform::MemoryCopy(dst, value.Get(), size * sizeof(Float4));
}
if (positions.IsValid())
{
// Set XYZ
CHECK((uint32_t)positions.Length() >= size);
const Float3* src = positions.Get();
for (uint32 i = 0; i < size; i++)
dst[i] = PxVec4(C2P(src[i]), dst[i].w);
}
if (invMasses.IsValid())
{
// Set W
CHECK((uint32_t)invMasses.Length() >= size);
const float* src = invMasses.Get();
for (uint32 i = 0; i < size; i++)
dst[i].w = src[i];
// Apply previous particles too
nv::cloth::MappedRange<PxVec4> range2 = clothPhysX->getPreviousParticles();
for (uint32 i = 0; i < size; i++)
range2.begin()[i].w = src[i];
}
}
void PhysicsBackend::SetClothPaint(void* cloth, Span<const float> value)
{
auto clothPhysX = (nv::cloth::Cloth*)cloth;
if (value.IsValid())
{
const nv::cloth::MappedRange<const PxVec4> range = ((const nv::cloth::Cloth*)clothPhysX)->getCurrentParticles();
nv::cloth::Range<PxVec4> motionConstraints = clothPhysX->getMotionConstraints();
ASSERT(motionConstraints.size() <= (uint32)value.Length());
for (int32 i = 0; i < value.Length(); i++)
motionConstraints.begin()[i] = PxVec4(range[i].getXYZ(), value[i]);
}
else
{
clothPhysX->clearMotionConstraints();
}
}
void PhysicsBackend::AddCloth(void* scene, void* cloth)
{
auto scenePhysX = (ScenePhysX*)scene;