/// <summary>
/// Generates a basic mesh structure from a primitive
/// A 'SimpleMesh' is just the prim's overall shape with no material information.
/// </summary>
/// <param name="prim">Primitive to generate the mesh from</param>
/// <param name="lod">Level of detail to generate the mesh at</param>
/// <returns>The generated mesh or null on failure</returns>
public OMVR.SimpleMesh GenerateSimpleMesh(OMV.Primitive prim, OMVR.DetailLevel lod)
{
LibreMetaverse.PrimMesher.PrimMesh newPrim = GeneratePrimMesh(prim, lod, false);
if (newPrim == null)
{
return(null);
}
SimpleMesh mesh = new SimpleMesh
{
Path = new Path(),
Prim = prim,
Profile = new Profile(),
Vertices = new List <Vertex>(newPrim.coords.Count)
};
foreach (Coord c in newPrim.coords)
{
mesh.Vertices.Add(new Vertex {
Position = new Vector3(c.X, c.Y, c.Z)
});
}
mesh.Indices = new List <ushort>(newPrim.faces.Count * 3);
foreach (LibreMetaverse.PrimMesher.Face face in newPrim.faces)
{
mesh.Indices.Add((ushort)face.v1);
mesh.Indices.Add((ushort)face.v2);
mesh.Indices.Add((ushort)face.v3);
}
return(mesh);
}
/// <summary>
/// Create a faceted mesh from prim shape parameters.
/// Generates a a series of faces, each face containing a mesh and
/// material metadata.
/// A prim will turn into multiple faces with each being independent
/// meshes and each having different material information.
/// </summary>
/// <param name="prim">Primitive to generate the mesh from</param>
/// <param name="lod">Level of detail to generate the mesh at</param>
/// <returns>The generated mesh</returns >
public FacetedMesh GenerateFacetedMesh(Primitive prim, DetailLevel lod)
{
bool isSphere = ((OMV.ProfileCurve)(prim.PrimData.profileCurve & 0x07) == OMV.ProfileCurve.HalfCircle);
LibreMetaverse.PrimMesher.PrimMesh newPrim = GeneratePrimMesh(prim, lod, true);
if (newPrim == null)
{
return(null);
}
// copy the vertex information into OMVR.IRendering structures
var omvrmesh = new OMVR.FacetedMesh
{
Faces = new List <OMVR.Face>(),
Prim = prim,
Profile = new OMVR.Profile
{
Faces = new List <OMVR.ProfileFace>(),
Positions = new List <OMV.Vector3>()
},
Path = new OMVR.Path {
Points = new List <OMVR.PathPoint>()
}
};
var indexer = newPrim.GetVertexIndexer();
for (int i = 0; i < indexer.numPrimFaces; i++)
{
OMVR.Face oface = new OMVR.Face
{
Vertices = new List <OMVR.Vertex>(),
Indices = new List <ushort>(),
TextureFace = prim.Textures.GetFace((uint)i)
};
for (int j = 0; j < indexer.viewerVertices[i].Count; j++)
{
var vert = new OMVR.Vertex();
var m = indexer.viewerVertices[i][j];
vert.Position = new Vector3(m.v.X, m.v.Y, m.v.Z);
vert.Normal = new Vector3(m.n.X, m.n.Y, m.n.Z);
vert.TexCoord = new OMV.Vector2(m.uv.U, 1.0f - m.uv.V);
oface.Vertices.Add(vert);
}
for (int j = 0; j < indexer.viewerPolygons[i].Count; j++)
{
var p = indexer.viewerPolygons[i][j];
// Skip "degenerate faces" where the same vertex appears twice in the same tri
if (p.v1 == p.v2 || p.v1 == p.v2 || p.v2 == p.v3)
{
continue;
}
oface.Indices.Add((ushort)p.v1);
oface.Indices.Add((ushort)p.v2);
oface.Indices.Add((ushort)p.v3);
}
omvrmesh.Faces.Add(oface);
}
return(omvrmesh);
}
