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)
{
// Create a grid of triangles to be our cloth
var clothGrid = new VertexGrid(25, 25);
// Setup the grid for cooking
var clothMeshDesc = new ClothMeshDesc()
{
Points = clothGrid.Points,
Triangles = clothGrid.Indices
};
// Cook
var clothFabricStream = new MemoryStream();
using (var cooking = scene.Physics.CreateCooking())
{
bool result = cooking.CookClothFabric(clothMeshDesc, new Vector3(0, -1, 0), clothFabricStream);
if (!result)
{
throw new Exception("Failed to cook deformable mesh");
}
}
// 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 collisionData = new ClothCollisionData();
var particles = from p in clothGrid.Points
select new ClothParticle()
{
Position = p,
InverseWeight = 0.1f
};
// Create the cloth mesh from the cooked stream
var cloth = scene.Physics.CreateCloth(
Matrix.Identity,
clothFabric,
particles.ToArray(),
collisionData,
0);
scene.AddActor(cloth);
return(cloth);
}
private Cloth CreateCloth(Scene scene)
{
// Create a grid of triangles to be our cloth
var clothGrid = new VertexGrid(25, 25);
// Setup the grid for cooking
var clothMeshDesc = new ClothMeshDesc()
{
Points = clothGrid.Points,
Triangles = clothGrid.Indices
};
// Cook
var clothFabricStream = new MemoryStream();
using (var cooking = scene.Physics.CreateCooking())
{
bool result = cooking.CookClothFabric(clothMeshDesc, new Vector3(0, -1, 0), clothFabricStream);
if (!result)
throw new Exception("Failed to cook deformable mesh");
}
// 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 collisionData = new ClothCollisionData();
var particles = from p in clothGrid.Points
select new ClothParticle()
{
Position = p,
InverseWeight = 0.1f
};
// Create the cloth mesh from the cooked stream
var cloth = scene.Physics.CreateCloth(
Matrix.Identity,
clothFabric,
particles.ToArray(),
collisionData,
0);
scene.AddActor(cloth);
return cloth;
}
//private void CreateFlagPole(Cloth cloth)
//{
// var polePosition = new Vector3(0, 30, 0);
// // Create a flag pole to attach the cloth to
// var material = this.Scene.Physics.CreateMaterial(0.1f, 0.1f, 0.1f);
// var rigidActor = this.Scene.Physics.CreateRigidStatic();
// var boxGeom = new BoxGeometry(2, 30, 2);
// var boxShape = rigidActor.CreateShape(boxGeom, material);
// rigidActor.GlobalPose = Matrix.Translation(polePosition);
// //rigidActor.SetMassAndUpdateInertia(10);
// //rigidActor.Flags = RigidDynamicFlags.Kinematic;
// this.Scene.AddActor(rigidActor);
// // Attach the cloth
// var clothGrid = new VertexGrid(25, 25);
// // TODO: Clean up the below code
// // I'd like this to use the FindPointsInsideBoxGeom method instead (more generic)
// Vector3[] p;
// int[] i;
// FindPointsInsideBoxGeom(boxGeom, polePosition, clothGrid, out p, out i);
// p = clothGrid.Points.Take(75).ToArray();
// i = Enumerable.Range(0, 75).ToArray();
// var f = new int[p.Length];
// var attachment = this.Scene.Physics.CreateAttachment(cloth, boxShape, i, p, f);
//}
private void FindPointsInsideBoxGeom(BoxGeometry box, Vector3 boxPosition, VertexGrid grid, out Vector3[] points, out int[] indices)
{
var i = new List <Vector3>();
var j = new List <int>();
foreach (int index in grid.Indices)
{
Vector3 p = grid.Points[index] + new Vector3(0, 5, 0);
if (IsPointInBox(box, boxPosition, p))
{
i.Add(p);
j.Add(index);
}
}
points = i.ToArray();
indices = j.ToArray();
}
//private void CreateFlagPole(Cloth cloth)
//{
// var polePosition = new Vector3(0, 30, 0);
// // Create a flag pole to attach the cloth to
// var material = this.Scene.Physics.CreateMaterial(0.1f, 0.1f, 0.1f);
// var rigidActor = this.Scene.Physics.CreateRigidStatic();
// var boxGeom = new BoxGeometry(2, 30, 2);
// var boxShape = rigidActor.CreateShape(boxGeom, material);
// rigidActor.GlobalPose = Matrix.Translation(polePosition);
// //rigidActor.SetMassAndUpdateInertia(10);
// //rigidActor.Flags = RigidDynamicFlags.Kinematic;
// this.Scene.AddActor(rigidActor);
// // Attach the cloth
// var clothGrid = new VertexGrid(25, 25);
// // TODO: Clean up the below code
// // I'd like this to use the FindPointsInsideBoxGeom method instead (more generic)
// Vector3[] p;
// int[] i;
// FindPointsInsideBoxGeom(boxGeom, polePosition, clothGrid, out p, out i);
// p = clothGrid.Points.Take(75).ToArray();
// i = Enumerable.Range(0, 75).ToArray();
// var f = new int[p.Length];
// var attachment = this.Scene.Physics.CreateAttachment(cloth, boxShape, i, p, f);
//}
private void FindPointsInsideBoxGeom(BoxGeometry box, Vector3 boxPosition, VertexGrid grid, out Vector3[] points, out int[] indices)
{
var i = new List<Vector3>();
var j = new List<int>();
foreach (int index in grid.Indices)
{
Vector3 p = grid.Points[index] + new Vector3(0, 5, 0);
if (IsPointInBox(box, boxPosition, p))
{
i.Add(p);
j.Add(index);
}
}
points = i.ToArray();
indices = j.ToArray();
}
