public SMMesh(IEnumerable <SMVertex> vertices, IEnumerable <SMTriangle> triangles, DICTObjShape shape, int vertexBufferIndex, SMTexture texture)
{
Vertices = vertices.ToList();
Triangles = triangles.ToList();
Shape = shape;
VertexBufferIndex = vertexBufferIndex;
Texture = texture;
}
public static PICAVertex[] GetVertices(DICTObjShape shape, int vertexBufferIndex)
{
if (!(shape.VertexBuffers[vertexBufferIndex] is VertexBufferInterleaved))
{
throw new InvalidOperationException($"Currently only supports VertexBufferInterleaved, but this is a {shape.VertexBuffers[vertexBufferIndex].GetType().Name}");
}
var vertexBuffer = (VertexBufferInterleaved)shape.VertexBuffers[vertexBufferIndex];
if (vertexBuffer.RawBuffer.Length == 0)
{
return(new PICAVertex[0]);
}
float[] Elems = new float[4];
PICAVertex[] Output = new PICAVertex[vertexBuffer.RawBuffer.Length / vertexBuffer.VertexStride];
using (MemoryStream MS = new MemoryStream(vertexBuffer.RawBuffer))
{
BinaryReader Reader = new BinaryReader(MS);
for (int Index = 0; Index < Output.Length; Index++)
{
PICAVertex Out = new PICAVertex();
MS.Seek(Index * vertexBuffer.VertexStride, SeekOrigin.Begin);
int bi = 0;
int wi = 0;
foreach (PICAAttribute Attrib in vertexBuffer.Attributes.Select(a => PICAAttribute.GetPICAAttribute(a)))
{
AlignStream(MS, Attrib.Format);
for (int Elem = 0; Elem < Attrib.Elements; Elem++)
{
switch (Attrib.Format)
{
case PICAAttributeFormat.Byte: Elems[Elem] = Reader.ReadSByte(); break;
case PICAAttributeFormat.Ubyte: Elems[Elem] = Reader.ReadByte(); break;
case PICAAttributeFormat.Short: Elems[Elem] = Reader.ReadInt16(); break;
case PICAAttributeFormat.Float: Elems[Elem] = Reader.ReadSingle(); break;
}
}
Vector4 v = new Vector4(Elems[0], Elems[1], Elems[2], Elems[3]);
v *= Attrib.Scale;
if (Attrib.Name == VertexBuffer.PICAAttributeName.Position)
{
v.X += shape.PositionOffset.X;
v.Y += shape.PositionOffset.Y;
v.Z += shape.PositionOffset.Z;
}
switch (Attrib.Name)
{
case VertexBuffer.PICAAttributeName.Position: Out.Position = v; break;
case VertexBuffer.PICAAttributeName.Normal: Out.Normal = v; break;
case VertexBuffer.PICAAttributeName.Tangent: Out.Tangent = v; break;
case VertexBuffer.PICAAttributeName.Color: Out.Color = v; break;
case VertexBuffer.PICAAttributeName.TexCoord0: Out.TexCoord0 = v; break;
case VertexBuffer.PICAAttributeName.TexCoord1: Out.TexCoord1 = v; break;
case VertexBuffer.PICAAttributeName.TexCoord2: Out.TexCoord2 = v; break;
case VertexBuffer.PICAAttributeName.BoneIndex:
Out.Indices[bi++] = (int)v.X; if (Attrib.Elements == 1)
{
break;
}
Out.Indices[bi++] = (int)v.Y; if (Attrib.Elements == 2)
{
break;
}
Out.Indices[bi++] = (int)v.Z; if (Attrib.Elements == 3)
{
break;
}
Out.Indices[bi++] = (int)v.W; break;
case VertexBuffer.PICAAttributeName.BoneWeight:
Out.Weights[wi++] = v.X; if (Attrib.Elements == 1)
{
break;
}
Out.Weights[wi++] = v.Y; if (Attrib.Elements == 2)
{
break;
}
Out.Weights[wi++] = v.Z; if (Attrib.Elements == 3)
{
break;
}
Out.Weights[wi++] = v.W; break;
}
}
// TODO -- missing FixedAttribute support
//if (Mesh.FixedAttributes != null)
//{
// bool HasFixedIndices = Mesh.FixedAttributes.Any(x => x.Name == VertexBuffer.PICAAttributeName.BoneIndex);
// bool HasFixedWeights = Mesh.FixedAttributes.Any(x => x.Name == VertexBuffer.PICAAttributeName.BoneWeight);
// if (HasFixedIndices || HasFixedWeights)
// {
// foreach (PICAFixedAttribute Attr in Mesh.FixedAttributes)
// {
// switch (Attr.Name)
// {
// case VertexBuffer.PICAAttributeName.BoneIndex:
// Out.Indices[0] = (int)Attr.Value.X;
// Out.Indices[1] = (int)Attr.Value.Y;
// Out.Indices[2] = (int)Attr.Value.Z;
// break;
// case VertexBuffer.PICAAttributeName.BoneWeight:
// Out.Weights[0] = Attr.Value.X;
// Out.Weights[1] = Attr.Value.Y;
// Out.Weights[2] = Attr.Value.Z;
// break;
// }
// }
// }
//}
Output[Index] = Out;
}
}
return(Output);
}