static public SphereShapeDesc CreateSphereShapeFromMesh(StaticModel mesh, float scale)
{
List <Vector3> verts = mesh.GetModelVertices(scale);
float largestSquareLength = 0.0f;
foreach (Vector3 vertex in verts)
{
float vertSqrLng = vertex.LengthSquared();
if (vertSqrLng > largestSquareLength)
{
largestSquareLength = vertSqrLng;
}
}
SphereShapeDesc shape = new SphereShapeDesc();
shape.Radius = (float)Math.Sqrt(largestSquareLength);
return(shape);
}
/// <summary>
/// Create a shape from a <seealso cref="ShapeType"/> and the BaseEntity information.
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
protected ShapeDesc CreateShapeFromType(ShapeType type)
{
float scale = this.parentEntity.Scale;
this.height *= scale;
this.width *= scale;
this.depth *= scale;
this.diameter *= scale;
switch (type)
{
case ShapeType.Box:
{
if (null == this.physMesh)
{
var shape = new BoxShapeDesc();
shape.Extents = new Vector3(this.width, this.height, this.depth);
return(shape);
}
else
{
return(CreateBoxShapeFromMesh(this.physMesh, scale));
}
}
case ShapeType.Sphere:
{
if (null == this.physMesh)
{
var shape = new SphereShapeDesc();
shape.Radius = this.diameter / 2.0f;
return(shape);
}
else
{
return(CreateSphereShapeFromMesh(this.physMesh, scale));
}
}
case ShapeType.Heightfield:
{
// Unsupported by this method, use CreateHeightfieldShape()
return(null);
}
case ShapeType.Capsule:
{
var shape = new CapsuleShapeDesc();
shape.Radius = this.diameter / 2.0f;
shape.Length = this.height;
return(shape);
}
case ShapeType.Cylinder:
{
var shape = new CylinderShapeDesc();
shape.Height = this.height;
shape.Radius = this.diameter / 2.0f;
return(shape);
}
case ShapeType.Cone:
{
var shape = new ConeShapeDesc();
shape.Height = this.height;
shape.Radius = this.diameter / 2.0f;
return(shape);
}
case ShapeType.TriangleMesh:
{
if (isDynamic)
{
throw new Exception("Triangle Mesh shapes do not support dynamic physics");
}
TriangleMeshShapeDesc shape = new TriangleMeshShapeDesc();
if (this.physMesh == null)
{
MsgGetModelVertices msgGetVerts = ObjectPool.Aquire <MsgGetModelVertices>();
msgGetVerts.UniqueTarget = this.parentEntity.UniqueID;
this.parentEntity.Game.SendMessage(msgGetVerts);
shape.Vertices = msgGetVerts.Vertices;
MsgGetModelIndices msgGetInds = ObjectPool.Aquire <MsgGetModelIndices>();
msgGetInds.UniqueTarget = this.parentEntity.UniqueID;
this.parentEntity.Game.SendMessage(msgGetInds);
shape.Indices = msgGetInds.Indices;
}
else
{
shape.Vertices = physMesh.GetModelVertices(this.parentEntity.Scale);
shape.Indices = physMesh.GetModelIndices();
}
if ((shape.Vertices.Count == 0) || (shape.Indices.Count == 0))
{
return(null);
}
return(shape);
}
default:
// Throw exception
return(null);
}
;
}
