public OBJInterpreter(ObjImporter importedFile, ITextureFactory textureFactory)
{
this.importer = importedFile;
this.textureFactory = textureFactory;
createMaterials();
}
private void convertCollisionData(ObjImporter importer, RAMMesh mesh)
{
//var boxMaterial = importer.Materials.Find(o => o.Name == "TW-Physics-Box");
for (int i = 0; i < importer.Groups.Count; i++)
{
var group = importer.Groups[i];
for (int j = 0; j < group.SubObjects.Count; j++)
{
var subObj = group.SubObjects[j];
if (subObj.Material.Name == materialNamePhysicsBox)
{
convertSubObjectPhysicsBox(importer, subObj, mesh);
}
}
}
var data = mesh.GetCollisionData();
if (!meshHasCollisionData(mesh))
{
//Load triangle mesh from positions
MeshCollisionData.TriangleMeshData tm = createTriangleMeshForAllObjects(importer);
data.TriangleMesh = tm;
}
}
public List <RAMMesh> CreateMeshesFromObjects(ObjImporter importer)
{
var meshes = new List <RAMMesh>();
Dictionary <OBJMaterial, MeshCoreData.Material> materials = convertMaterials(importer);
for (int i = 0; i < importer.Groups.Count; i++)
{
var group = importer.Groups[i];
var mesh = new RAMMesh();
meshes.Add(mesh);
for (int j = 0; j < group.SubObjects.Count; j++)
{
var sub = group.SubObjects[j];
convertSubObject(importer, sub, materials, mesh);
}
if (!meshHasCollisionData(mesh))
{
mesh.GetCollisionData().TriangleMesh = createTriangleMeshForGroup(importer, group);
}
}
return(meshes);
}
private MeshCollisionData.TriangleMeshData createTriangleMeshForAllObjects(ObjImporter importer)
{
var positions = new List <Vector3>();
for (int i = 0; i < importer.Groups.Count; i++)
{
var group = importer.Groups[i];
for (int j = 0; j < group.SubObjects.Count; j++)
{
var subObj = group.SubObjects[j];
addPositionsFromSubObject(importer, subObj, positions);
}
}
var indices = new int[positions.Count * 3];
for (int k = 0; k < indices.Length; k++)
{
indices[k] = k;
}
var tm = new MeshCollisionData.TriangleMeshData();
tm.Positions = positions.ToArray();
tm.Indices = indices;
return(tm);
}
private Dictionary <OBJMaterial, MeshCoreData.Material> convertMaterials(ObjImporter importer)
{
var materials = new Dictionary <OBJMaterial, MeshCoreData.Material>();
for (int i = 0; i < importer.Materials.Count; i++)
{
var mat = importer.Materials[i];
var meshMat = new MeshCoreData.Material();
if (mat.DiffuseMap != null)
{
meshMat.DiffuseMap = CreateOrFindIdenticalTexture(mat.DiffuseMap);
}
if (mat.BumpMap != null)
{
meshMat.NormalMap = CreateOrFindIdenticalTexture(mat.BumpMap);
}
if (mat.SpecularMap != null)
{
meshMat.SpecularMap = CreateOrFindIdenticalTexture(mat.SpecularMap);
}
meshMat.ColoredMaterial = mat.DiffuseMap == null;
meshMat.DiffuseColor = mat.DiffuseColor;
meshMat.Name = mat.Name;
materials[mat] = meshMat;
}
return(materials);
}
private void addPositionsFromSubObject(ObjImporter importer, OBJGroup.SubObject subObj, List <Vector3> positions)
{
for (int k = 0; k < subObj.Faces.Count; k++)
{
var f = subObj.Faces[k];
positions.Add(importer.Vertices[f.V1.Position]);
positions.Add(importer.Vertices[f.V2.Position]);
positions.Add(importer.Vertices[f.V3.Position]);
}
}
public List <Vector3> GetPositions(ObjImporter importer)
{
var positions = new List <Vector3>();
foreach (var f in Faces)
{
positions.Add(importer.Vertices[f.V1.Position]);
positions.Add(importer.Vertices[f.V2.Position]);
positions.Add(importer.Vertices[f.V3.Position]);
}
return(positions);
}
private void convertSubObjectPhysicsConvexMesh(ObjImporter importer, OBJGroup.SubObject sub, RAMMesh mesh)
{
var positions = new List <Vector3>();
addPositionsFromSubObject(importer, sub, positions);
var convex = new MeshCollisionData.Convex();
convex.Positions = positions;
mesh.GetCollisionData().ConvexMeshes.Add(convex);
}
private void convertSubObjectPhysicsTriangleMesh(ObjImporter importer, OBJGroup.SubObject sub, RAMMesh mesh)
{
if (mesh.GetCollisionData().TriangleMesh != null)
{
throw new InvalidOperationException("Multiple Physics triangle meshes found in an object!");
}
var positions = new List <Vector3>();
addPositionsFromSubObject(importer, sub, positions);
var indices = createIndices(positions.Count * 3);
var tm = new MeshCollisionData.TriangleMeshData();
tm.Positions = positions.ToArray();
tm.Indices = indices;
mesh.GetCollisionData().TriangleMesh = tm;
}
private void convertSubObject(ObjImporter importer, OBJGroup.SubObject sub, Dictionary <OBJMaterial, MeshCoreData.Material> materials, RAMMesh mesh)
{
if (sub.Material.Name == materialNamePhysicsBox)
{
convertSubObjectPhysicsBox(importer, sub, mesh);
}
else if (sub.Material.Name == materialNameTriangleMesh)
{
convertSubObjectPhysicsTriangleMesh(importer, sub, mesh);
}
else if (sub.Material.Name == materialNameConvex)
{
convertSubObjectPhysicsConvexMesh(importer, sub, mesh);
}
else
{
convertSubObjectRenderPart(mesh, sub, importer, materials);
}
}
private MeshCollisionData.TriangleMeshData createTriangleMeshForGroup(ObjImporter importer, OBJGroup group)
{
var positions = new List <Vector3>();
for (int j = 0; j < group.SubObjects.Count; j++)
{
var subObj = group.SubObjects[j];
addPositionsFromSubObject(importer, subObj, positions);
}
int[] indices = createIndices(positions.Count * 3);
var tm = new MeshCollisionData.TriangleMeshData();
tm.Positions = positions.ToArray();
tm.Indices = indices;
return(tm);
}
private void convertSubObjectPhysicsBox(ObjImporter importer, OBJGroup.SubObject subObj, RAMMesh mesh)
{
var data = mesh.GetCollisionData();
var positions = new List <Vector3>();
for (int i = 0; i < subObj.Faces.Count; i++)
{
var face = subObj.Faces[i];
positions.Add(importer.Vertices[face.V1.Position]);
positions.Add(importer.Vertices[face.V2.Position]);
positions.Add(importer.Vertices[face.V3.Position]);
}
var bb = BoundingBox.CreateFromPoints(positions);
var box = new MeshCollisionData.Box();
box.Dimensions = bb.Max - bb.Min;
box.Orientation = Matrix.CreateTranslation((bb.Max + bb.Min) * 0.5f);
data.Boxes.Add(box);
}
public RAMMesh CreateMesh(ObjImporter importer)
{
var mesh = new RAMMesh();
//TODO: additional data
/*var meshAdditionalData = new MeshAdditionalData();
* meshAdditionalData.ImportedDate = DateTime.Now;
* meshAdditionalData.ImporterDescription = "Imported by the OBJToRAMMeshConverter using the OBJImporter";*/
var meshCoreData = mesh.GetCoreData();
Dictionary <OBJMaterial, MeshCoreData.Material> materials = convertMaterials(importer);
for (int i = 0; i < importer.Groups.Count; i++)
{
var group = importer.Groups[i];
for (int j = 0; j < group.SubObjects.Count; j++)
{
var sub = group.SubObjects[j];
if (sub.Faces.Count == 0)
{
continue;
}
if (sub.Material.Name == materialNamePhysicsBox)
{
continue;
}
convertSubObject(importer, sub, materials, mesh);
}
}
convertCollisionData(importer, mesh);
return(mesh);
}
private void convertSubObjectRenderPart(RAMMesh mesh, OBJGroup.SubObject sub, ObjImporter importer, Dictionary <OBJMaterial, MeshCoreData.Material> materials)
{
if (sub.Faces.Count == 0)
{
return;
}
var meshCoreData = mesh.GetCoreData();
Vector3[] positions = new Vector3[sub.Faces.Count * 3];
Vector3[] normals = new Vector3[sub.Faces.Count * 3];
Vector2[] texcoords = new Vector2[sub.Faces.Count * 3];
for (int k = 0; k < sub.Faces.Count; k++)
{
var face = sub.Faces[k];
positions[k * 3 + 0] = importer.Vertices[face.V1.Position];
positions[k * 3 + 1] = importer.Vertices[face.V2.Position];
positions[k * 3 + 2] = importer.Vertices[face.V3.Position];
normals[k * 3 + 0] = importer.Normals[face.V1.Normal];
normals[k * 3 + 1] = importer.Normals[face.V2.Normal];
normals[k * 3 + 2] = importer.Normals[face.V3.Normal];
texcoords[k * 3 + 0] = new Vector2(importer.TexCoords[face.V1.TextureCoordinate].X, 1 - importer.TexCoords[face.V1.TextureCoordinate].Y);
texcoords[k * 3 + 1] = new Vector2(importer.TexCoords[face.V2.TextureCoordinate].X, 1 - importer.TexCoords[face.V2.TextureCoordinate].Y);
texcoords[k * 3 + 2] = new Vector2(importer.TexCoords[face.V3.TextureCoordinate].X, 1 - importer.TexCoords[face.V3.TextureCoordinate].Y);
}
TangentSolver solver = new TangentSolver();
var tangents = solver.GenerateTangents(positions, normals, texcoords).Select(f => new Vector3(f.X, f.Y, f.Z)).ToArray();
var positionsSource = new MeshPartGeometryData.Source();
positionsSource.DataVector3 = positions;
positionsSource.Semantic = MeshPartGeometryData.Semantic.Position;
var normalsSource = new MeshPartGeometryData.Source();
normalsSource.DataVector3 = normals;
normalsSource.Semantic = MeshPartGeometryData.Semantic.Normal;
var texcoordsSource = new MeshPartGeometryData.Source();
texcoordsSource.DataVector2 = texcoords;
texcoordsSource.Semantic = MeshPartGeometryData.Semantic.Texcoord;
var tangentsSource = new MeshPartGeometryData.Source();
tangentsSource.DataVector3 = tangents;
tangentsSource.Semantic = MeshPartGeometryData.Semantic.Tangent;
var part = new MeshCoreData.Part();
part.MeshMaterial = materials[sub.Material];
var meshPart = new RAMMeshPart();
meshPart.GetGeometryData().Sources.Add(positionsSource);
meshPart.GetGeometryData().Sources.Add(normalsSource);
meshPart.GetGeometryData().Sources.Add(texcoordsSource);
meshPart.GetGeometryData().Sources.Add(tangentsSource);
part.MeshPart = meshPart;
part.ObjectMatrix = Matrix.Identity;
meshCoreData.Parts.Add(part);
}
