public static MaterialPrimitivePair CreatePair(ref Primitive primitive, ref int materialID, ref MaterialProperties materialProperties)
{
MaterialPrimitivePair newPair = new MaterialPrimitivePair();
newPair.Primitive = primitive;
newPair.MaterialProperties = materialProperties;
return newPair;
}
/// <summary>
/// Adds a primitive to this collision skin - the primitive is
/// copied (so you can pass in something on the stack, or delete
/// the original) - perhaps using reference counting. Returns the
/// primitive index, or -1 if failure Also takes that material ID
/// and the properties used when a collision ID is USER_DEFINED
/// </summary>
private int AddPrimitive(Primitive prim, int matID, MaterialProperties matProps)
{
Primitive newPrim = prim.Clone();
if (newPrim == null)
throw new ArgumentException("Not able to clone primitive!");
materialIDs.Add(matID);
materialProperties.Add(matProps);
primitivesOldWorld.Add(prim.Clone());
primitivesNewWorld.Add(prim.Clone());
primitivesLocal.Add(newPrim);
UpdateWorldBoundingBox();
return materialIDs.Count - 1;
}
/// <summary>
/// Sets the material properties for a primitive. In this case the
/// material ID will be automatically set to USER_DEFINED
/// </summary>
/// <param name="prim"></param>
/// <param name="matProperties"></param>
public void SetMaterialProperties(int prim, MaterialProperties matProperties)
{
materialProperties[prim] = matProperties;
materialIDs[prim] = (int)MaterialTable.MaterialID.UserDefined;
}
public int AddPrimitive(Primitive prim, MaterialProperties matProps)
{
return AddPrimitive(prim, (int)MaterialTable.MaterialID.UserDefined, matProps);
}
public static MaterialPrimitivePair CreatePair(Primitive primitive, int materialID, ref MaterialProperties materialProperties)
{
return CreatePair(ref primitive, ref materialID, ref materialProperties);
}
public void Add(Primitive primitive, MaterialProperties materialProperties)
{
_materialPrimitivePairs.Add(MaterialPrimitivePair.CreatePair(primitive, (int)MaterialTable.MaterialID.UserDefined, ref materialProperties));
}
public void Add(Primitive primitive, int materialID, MaterialProperties materialProperties)
{
_materialPrimitivePairs.Add(MaterialPrimitivePair.CreatePair(primitive, materialID, ref materialProperties));
}
private void Initialize(Primitive primitive, MaterialProperties materialProperties, PrimitiveProperties primitiveProperties, bool enableBody)
{
float mass;
Vector3 centerOfMass;
Matrix inertiaTensor;
Matrix inertiaTensorCoM;
// Set variables ...
_primitive = primitive;
_primitiveProperties = primitiveProperties;
_materialProperties = materialProperties;
// Create and link Body and CollisionSkin.
_body = new Body();
_skin = new CollisionSkin(_body);
_body.CollisionSkin = _skin;
// Add primitive to CollisionSkin.
_skin.AddPrimitive(primitive, materialProperties);
// Set body properties.
_skin.GetMassProperties(primitiveProperties, out mass, out centerOfMass, out inertiaTensor, out inertiaTensorCoM);
_body.BodyInertia = inertiaTensorCoM;
_body.Mass = mass;
// Sync CollisionSkin and Body.
_body.MoveTo(Vector3.Zero, Matrix.Identity);
_skin.ApplyLocalTransform(new Transform(-centerOfMass, Matrix.Identity));
// Enable Body.
if (enableBody)
{
_body.EnableBody();
}
else
{
_body.DisableBody();
}
}
/// <summary>
/// This adds/overrides a material, and sets all the pairs for
/// existing materials using some sensible heuristic
/// </summary>
/// <param name="id"></param>
/// <param name="properties"></param>
public void SetMaterialProperties(int id, MaterialProperties properties)
{
materials[id] = properties;
foreach (KeyValuePair<int, MaterialProperties> it in materials)
{
int otherID = it.Key;
MaterialProperties mat = it.Value;
int key01 = otherID << 16 | id;
int key10 = id << 16 | otherID;
materialPairs[key01] = materialPairs[key10] =
new MaterialPairProperties(properties.Elasticity * mat.Elasticity,
properties.StaticRoughness * mat.StaticRoughness,
properties.DynamicRoughness * mat.DynamicRoughness);
}
}
/// <summary>
/// Initializes a new BasicObject.
/// </summary>
/// <param name="primitive">Primitive that will define the CollisionSkin.</param>
/// <param name="materialProperties"></param>
/// <param name="primitiveProperties"></param>
/// <param name="enableBody"></param>
public BasicObject(Primitive primitive, MaterialProperties materialProperties, PrimitiveProperties primitiveProperties, bool enableBody)
{
Initialize(primitive, materialProperties, primitiveProperties, enableBody);
}
/// <summary>
/// Initializes a new BasicObject. Body is enabled by default.
/// </summary>
/// <param name="primitive">Primitive that will define the CollisionSkin.</param>
/// <param name="materialProperties"></param>
/// <param name="primitiveProperties"></param>
public BasicObject(Primitive primitive, MaterialProperties materialProperties, PrimitiveProperties primitiveProperties)
{
Initialize(primitive, materialProperties, primitiveProperties, true);
}
/// <summary>
///
/// </summary>
/// <param name="type">Only AABox, Box, Capsule & Sphere will be accepted.</param>
/// <param name="color"></param>
public CollisionPrimitiveInfo(PrimitiveType type, MaterialProperties materialProperties, Color4 color)
{
Initialize(type, materialProperties, color);
}
/// <summary>
///
/// </summary>
/// <param name="type">Only AABox, Box, Capsule & Sphere will be accepted.</param>
public CollisionPrimitiveInfo(PrimitiveType type, MaterialProperties materialProperties)
{
Random random = new Random();
Initialize(type, materialProperties, new Color4((float)random.NextDouble() * 0.5f + 0.5f, (float)random.NextDouble() * 0.5f + 0.5f, (float)random.NextDouble() * 0.5f + 0.5f));
}
/// <summary>
///
/// </summary>
/// <param name="type">Only AABox, Box, Capsule & Sphere will be accepted.</param>
/// <param name="color"></param>
private void Initialize(PrimitiveType type, MaterialProperties materialProperties, Color4 color)
{
switch(type)
{
case PrimitiveType.AABox:
_primitive = new AABox(new Vector3(-0.5f), new Vector3(0.5f));
break;
case PrimitiveType.Box:
_primitive = new Box(Vector3.Zero, Matrix.Identity, new Vector3(1f));
break;
case PrimitiveType.Capsule:
_primitive = new Capsule(Vector3.Zero, Matrix.Identity, 1f, 1f);
break;
case PrimitiveType.Sphere:
_primitive = new Sphere(Vector3.Zero, 1f);
break;
default:
goto case PrimitiveType.Box;
}
_materialProperties = materialProperties;
_color = color;
}
