/**
* Format (everything little endian):
*
* UINT8[80] – Header
* UINT32 – Number of triangles
*
* foreach triangle
* REAL32[3] – Normal vector
* REAL32[3] – Vertex 1
* REAL32[3] – Vertex 2
* REAL32[3] – Vertex 3
* UINT16 – Attribute byte count
* end
*/
public static TriangleMeshModel Parse(string f)
{
using (var reader = new BinaryReader(new FileStream(f, FileMode.Open, FileAccess.Read)))
{
reader.ReadBytes(80); // skipping header
int triangleCount = reader.ReadInt32();
var triangleEdgeData = new List <I3DObject>(triangleCount);
for (int i = 0; i < triangleCount; i++)
{
triangleEdgeData[i] = new MinimalTriangle(
new Vect3
{
X = reader.ReadSingle(),
Y = reader.ReadSingle(),
Z = reader.ReadSingle()
},
new Vect3
{
X = reader.ReadSingle(),
Y = reader.ReadSingle(),
Z = reader.ReadSingle()
},
new Vect3
{
X = reader.ReadSingle(),
Y = reader.ReadSingle(),
Z = reader.ReadSingle()
},
new Vect3
{
X = reader.ReadSingle(),
Y = reader.ReadSingle(),
Z = reader.ReadSingle()
}
);
reader.ReadUInt16(); // skip the 2 attribute bytes
}
return(new TriangleMeshModel(triangleEdgeData));
}
}
public static void AddTraceables(this Mesh mesh, MaterialAbstract material, Matrix4X4 matrix, List <ITraceable> tracePrimitives)
{
for (int faceIndex = 0; faceIndex < mesh.Faces.Count; faceIndex++)
{
var face = mesh.Faces[faceIndex];
ITraceable triangle;
if (material != null)
{
triangle = new TriangleShape(
mesh.Vertices[face.v0].Transform(matrix),
mesh.Vertices[face.v1].Transform(matrix),
mesh.Vertices[face.v2].Transform(matrix),
material, faceIndex);
}
else
{
triangle = new MinimalTriangle((fi, vi) =>
{
switch (vi)
{
case 0:
return(mesh.Vertices[mesh.Faces[fi].v0]);
case 1:
return(mesh.Vertices[mesh.Faces[fi].v1]);
default:
return(mesh.Vertices[mesh.Faces[fi].v2]);
}
}, faceIndex);
}
tracePrimitives.Add(triangle);
}
}
