private Cloth CreateCloth(Scene scene, RigidActor poleActor)
{
// Create a grid of triangles to be our cloth
var clothGrid = VertexGrid.CreateGrid(40, 40, 0.4f);
// Setup the grid for cooking
var clothMeshDesc = new ClothMeshDesc()
{
Points = clothGrid.Points,
Triangles = ArrayUtil.ToByteArray(clothGrid.Indices)
};
// Cook
var clothFabricStream = new MemoryStream();
using (var cooking = scene.Physics.CreateCooking())
{
cooking.CookClothFabric(clothMeshDesc, new Vector3(0, -1, 0), clothFabricStream);
}
// Reset the seek position of the stream so we can read it form the beginning
clothFabricStream.Position = 0;
var clothFabric = scene.Physics.CreateClothFabric(clothFabricStream);
var poleBoxGeom = poleActor.GetShape(0).GetBoxGeometry();
var boxPosition = new Vector3(poleActor.GlobalPose.M41, poleActor.GlobalPose.M42, poleActor.GlobalPose.M43);
var particles = from p in clothGrid.Points
select new ClothParticle()
{
Position = p,
// Setting the inverse weight of a particle to 0 will pin it in place, any other value will be its weight
InverseWeight = IsPointInBox(poleBoxGeom, boxPosition, p) ? 0 : 1
};
// Create the cloth mesh from the cooked stream
var cloth = scene.Physics.CreateCloth
(
Matrix4x4.CreateTranslation(0, 30, 0),
clothFabric,
particles.ToArray(),
0
);
// Enable collision with other scene geometry
//cloth.Flags |= ClothFlag.SceneCollision;
// GPU cloth if desired
// The Engine class needs to create a CudaContextManager for this to work. Define 'GPU' on
// the Engine project to enable it.
cloth.Flags |= ClothFlag.GPU;
scene.AddActor(cloth);
return(cloth);
}
private Cloth CreateCloth(Scene scene, RigidActor poleActor)
{
// Create a grid of triangles to be our cloth
var clothGrid = VertexGrid.CreateGrid(40, 40, 0.4f);
// Setup the grid for cooking
var clothMeshDesc = new ClothMeshDesc()
{
Points = clothGrid.Points,
Triangles = ArrayUtil.ToByteArray(clothGrid.Indices)
};
// Cook
var clothFabricStream = new MemoryStream();
using (var cooking = scene.Physics.CreateCooking())
{
cooking.CookClothFabric(clothMeshDesc, new Vector3(0, -1, 0), clothFabricStream);
}
// Reset the seek position of the stream so we can read it form the beginning
clothFabricStream.Position = 0;
var clothFabric = scene.Physics.CreateClothFabric(clothFabricStream);
var poleBoxGeom = poleActor.GetShape(0).GetBoxGeometry();
var boxPosition = new Vector3(poleActor.GlobalPose.M41, poleActor.GlobalPose.M42, poleActor.GlobalPose.M43);
var particles = from p in clothGrid.Points
select new ClothParticle()
{
Position = p,
// Setting the inverse weight of a particle to 0 will pin it in place, any other value will be its weight
InverseWeight = IsPointInBox(poleBoxGeom, boxPosition, p) ? 0 : 1
};
// Create the cloth mesh from the cooked stream
var cloth = scene.Physics.CreateCloth
(
Matrix4x4.CreateTranslation(0, 30, 0),
clothFabric,
particles.ToArray(),
0
);
// Enable collision with other scene geometry
//cloth.Flags |= ClothFlag.SceneCollision;
// GPU cloth if desired
// The Engine class needs to create a CudaContextManager for this to work. Define 'GPU' on
// the Engine project to enable it.
cloth.Flags |= ClothFlag.GPU;
scene.AddActor(cloth);
return cloth;
}
private void AddCollider(RigidActor actor, ICollider collider)
{
if (collider is AggregateCollider agg)
{
foreach (var c in agg.ColliderComponents)
{
AddCollider(actor, c);
}
}
else if (collider is TriangleMeshCollider triCollider)
{
var desc = triCollider.GetDescriptor(GetMaterialIndices);
// Avoiding offline cook path for now because
// 1. Comments in Physx.Net imply memory leak using streams
// 2. I don't want to deal with disk caching cooks yet
var finalMesh = this.physxPhysics.CreateTriangleMesh(cooker, desc);
var meshGeom = new TriangleMeshGeometry(finalMesh);
RigidActorExt.CreateExclusiveShape(actor, meshGeom, globalMaterials, null);
}
else if (collider is TriangleModelCollider triModelCollider)
{
foreach (var mesh in triModelCollider.MeshColliders)
{
var desc = mesh.GetDescriptor(GetMaterialIndices);
// Avoiding offline cook path for now because
// 1. Comments in Physx.Net imply memory leak using streams
// 2. I don't want to deal with disk caching cooks yet
var finalMesh = this.physxPhysics.CreateTriangleMesh(cooker, desc);
var meshGeom = new TriangleMeshGeometry(finalMesh);
RigidActorExt.CreateExclusiveShape(actor, meshGeom, globalMaterials, null);
}
}
else if (collider is IVertexBasedCollider vertCollider)
{
var desc = new ConvexMeshDesc()
{
Flags = ConvexFlag.ComputeConvex
};
desc.SetPositions(vertCollider.GetTransformedVertices());
var mesh = this.physxPhysics.CreateConvexMesh(this.cooker, desc);
var geom = new ConvexMeshGeometry(mesh);
var mat = this.GetOrCreateMaterial(vertCollider.PhysicsMaterial);
// TODO: re-use shared shapes instead of creating exclusive
RigidActorExt.CreateExclusiveShape(actor, geom, mat);
}
else if (collider is ConvexModelCollider modelCollider)
{
foreach (var verts in modelCollider.Meshes)
{
var desc = new ConvexMeshDesc()
{
Flags = ConvexFlag.ComputeConvex
};
desc.SetPositions(verts);
var mesh = this.physxPhysics.CreateConvexMesh(this.cooker, desc);
var geom = new ConvexMeshGeometry(mesh);
var mat = this.GetOrCreateMaterial(modelCollider.PhysicsMaterial);
// TODO: re-use shared shapes instead of creating exclusive
RigidActorExt.CreateExclusiveShape(actor, geom, mat);
}
}
}
/// <summary>
/// A convenience/backwards-compatability method.
/// </summary>
public static Shape CreateShape(this RigidActor actor, PhysX.Geometry geometry, Material material)
{
return(RigidActorExt.CreateExclusiveShape(actor, geometry, material));
}
public void GetObjectHandlesNull()
{
RigidActor actor = ObjectTable.Instance.GetObject <RigidActor>(0);
Assert.IsNull(actor);
}
