public VertexBuffer GetVertexBuffer(IMeshPart meshPart)
{
var e = getEntry(meshPart);
if (e.VertexBuffer == null)
{
var geomData = meshPart.GetGeometryData();
var positions = geomData.GetSourceVector3(MeshPartGeometryData.Semantic.Position);
var normals = geomData.GetSourceVector3(MeshPartGeometryData.Semantic.Normal);
var texcoords = geomData.GetSourceVector2(MeshPartGeometryData.Semantic.Texcoord); // This might not work when no texcoords
var vertices = new TangentVertex[positions.Length];
for (int j = 0; j < vertices.Length; j++)
{
vertices[j].pos = positions[j];
vertices[j].normal = normals[j];
if (texcoords != null)
{
vertices[j].uv = texcoords[j];
}
//TODO: tangent
}
var vb = new VertexBuffer(game.GraphicsDevice, typeof(TangentVertex), vertices.Length, BufferUsage.None);
vb.SetData(vertices);
e.VertexBuffer = vb;
}
return(e.VertexBuffer);
}
private Entry getEntry(IMeshPart meshPart)
{
Entry ret;
if (!entries.TryGetValue(meshPart, out ret))
{
ret = new Entry();
entries[meshPart] = ret;
}
return(ret);
}
public MeshPartRenderData GetMeshPartRenderData(IMeshPart part)
{
if (pool.ContainsKey(part))
{
return((MeshPartRenderData)pool[part]);
}
var ret = meshFactory.CreateMeshPartData(part);
pool.Add(part, ret);
return(ret);
}
private void addPartToPart(IMeshPart source, IMeshPart dest, Matrix sourceTransform)
{
var sPositions = source.GetGeometryData().GetSourceVector3(MeshPartGeometryData.Semantic.Position);
var sNormals = source.GetGeometryData().GetSourceVector3(MeshPartGeometryData.Semantic.Normal);
var sTexcoords = source.GetGeometryData().GetSourceVector2(MeshPartGeometryData.Semantic.Texcoord);
var dPositions = dest.GetGeometryData().GetSourceVector3(MeshPartGeometryData.Semantic.Position);
if (dPositions == null)
{
dPositions = new Vector3[0];
}
var dNormals = dest.GetGeometryData().GetSourceVector3(MeshPartGeometryData.Semantic.Normal);
if (dNormals == null)
{
dNormals = new Vector3[0];
}
var dTexcoords = dest.GetGeometryData().GetSourceVector2(MeshPartGeometryData.Semantic.Texcoord);
if (dTexcoords == null)
{
dTexcoords = new Vector2[0];
}
var nPositions = new Vector3[sPositions.Length + dPositions.Length];
var nNormals = new Vector3[sNormals.Length + dNormals.Length];
var nTexcoords = new Vector2[sTexcoords.Length + dTexcoords.Length];
dPositions.CopyTo(nPositions, 0);
dNormals.CopyTo(nNormals, 0);
dTexcoords.CopyTo(nTexcoords, 0);
Vector3.Transform(sPositions, 0, ref sourceTransform, nPositions, dPositions.Length, sPositions.Length);
Vector3.TransformNormal(sNormals, 0, ref sourceTransform, nNormals, dNormals.Length, sNormals.Length);
sTexcoords.CopyTo(nTexcoords, dTexcoords.Length);
dest.GetGeometryData().SetSource(MeshPartGeometryData.Semantic.Position, nPositions);
dest.GetGeometryData().SetSource(MeshPartGeometryData.Semantic.Normal, nNormals);
dest.GetGeometryData().SetSource(MeshPartGeometryData.Semantic.Texcoord, nTexcoords);
}
public IndexBuffer GetIndexBuffer(IMeshPart meshPart)
{
var e = getEntry(meshPart);
if (e.IndexBuffer == null)
{
var geomData = meshPart.GetGeometryData();
var positions = geomData.GetSourceVector3(MeshPartGeometryData.Semantic.Position);
var indices = new int[positions.Length];
for (int j = 0; j < indices.Length; j++)
{
indices[j] = j;
}
var ib = new IndexBuffer(game.GraphicsDevice, typeof(int), indices.Length, BufferUsage.None);
ib.SetData(indices);
e.IndexBuffer = ib;
}
return(e.IndexBuffer);
}
public static BoundingSphere CalculateBoundingSphere(IMeshPart mesh)
{
var positions = mesh.GetGeometryData().GetSourceVector3(MeshPartGeometryData.Semantic.Position);
return(Microsoft.Xna.Framework.BoundingSphere.CreateFromPoints(positions).dx());
}
private MeshPartRenderData createRenderData(IMeshPart part)
{
return(renderDataFactory.CreateMeshPartData(part));
}
public MeshPartRenderData CreateMeshPartData(IMeshPart part)
{
return(CreateMeshPartData(part.GetGeometryData().ToRawMeshData()));
}
