public BasicModel(Device device, TextureManager texMgr, string filename, string texturePath, bool flipUV = false)
{
var importer = new AssimpImporter();
if (!importer.IsImportFormatSupported(Path.GetExtension(filename)))
{
throw new ArgumentException("Model format " + Path.GetExtension(filename) + " is not supported! Cannot load {1}", "filename");
}
#if DEBUG
importer.AttachLogStream(new ConsoleLogStream());
importer.VerboseLoggingEnabled = true;
#endif
var postProcessFlags = PostProcessSteps.GenerateSmoothNormals | PostProcessSteps.CalculateTangentSpace;
if (flipUV)
{
postProcessFlags |= PostProcessSteps.FlipUVs;
}
var model = importer.ImportFile(filename, postProcessFlags);
var min = new Vector3(float.MaxValue);
var max = new Vector3(float.MinValue);
foreach (var mesh in model.Meshes)
{
var verts = new List <PosNormalTexTan>();
var subset = new MeshGeometry.Subset {
VertexCount = mesh.VertexCount,
VertexStart = Vertices.Count,
FaceStart = Indices.Count / 3,
FaceCount = mesh.FaceCount
};
Subsets.Add(subset);
// bounding box corners
for (var i = 0; i < mesh.VertexCount; i++)
{
var pos = mesh.HasVertices ? mesh.Vertices[i].ToVector3() : new Vector3();
min = Vector3.Minimize(min, pos);
max = Vector3.Maximize(max, pos);
var norm = mesh.HasNormals ? mesh.Normals[i] : new Vector3D();
var texC = mesh.HasTextureCoords(0) ? mesh.GetTextureCoords(0)[i] : new Vector3D();
var tan = mesh.HasTangentBasis ? mesh.Tangents[i] : new Vector3D();
var v = new PosNormalTexTan(pos, norm.ToVector3(), texC.ToVector2(), tan.ToVector3());
verts.Add(v);
}
Vertices.AddRange(verts);
var indices = mesh.GetIndices().Select(i => (short)(i + (uint)subset.VertexStart)).ToList();
Indices.AddRange(indices);
var mat = model.Materials[mesh.MaterialIndex];
var material = mat.ToMaterial();
Materials.Add(material);
var diffusePath = mat.GetTexture(TextureType.Diffuse, 0).FilePath;
if (Path.GetExtension(diffusePath) == ".tga")
{
// DirectX doesn't like to load tgas, so you will need to convert them to pngs yourself with an image editor
diffusePath = diffusePath.Replace(".tga", ".png");
}
if (!string.IsNullOrEmpty(diffusePath))
{
DiffuseMapSRV.Add(texMgr.CreateTexture(Path.Combine(texturePath, diffusePath)));
}
var normalPath = mat.GetTexture(TextureType.Normals, 0).FilePath;
if (!string.IsNullOrEmpty(normalPath))
{
NormalMapSRV.Add(texMgr.CreateTexture(Path.Combine(texturePath, normalPath)));
}
else
{
var normalExt = Path.GetExtension(diffusePath);
normalPath = Path.GetFileNameWithoutExtension(diffusePath) + "_nmap" + normalExt;
NormalMapSRV.Add(texMgr.CreateTexture(Path.Combine(texturePath, normalPath)));
}
}
BoundingBox = new BoundingBox(min, max);
ModelMesh.SetSubsetTable(Subsets);
ModelMesh.SetVertices(device, Vertices);
ModelMesh.SetIndices(device, Indices);
}
public void TestSupportedFormats()
{
AssimpImporter importer = new AssimpImporter();
ExportFormatDescription[] exportDescs = importer.GetSupportedExportFormats();
String[] importFormats = importer.GetSupportedImportFormats();
Assert.IsNotNull(exportDescs);
Assert.IsNotNull(importFormats);
Assert.IsTrue(exportDescs.Length >= 1);
Assert.IsTrue(importFormats.Length >= 1);
Assert.IsTrue(importer.IsExportFormatSupported(exportDescs[0].FileExtension));
Assert.IsTrue(importer.IsImportFormatSupported(importFormats[0]));
}
