public override void Import (Stream input, Stream output, string filename) {
using (var importer = new AssimpContext()) {
var scene = importer.ImportFileFromStream(input,
PostProcessSteps.Triangulate | PostProcessSteps.SortByPrimitiveType | PostProcessSteps.GenerateNormals,
Path.GetExtension(filename));
using (var tw = new TarWriter(output)) {
var textures = new Dictionary<string, string>();
using (var ms = new MemoryStream()) {
using (var bw = new BinaryWriter(ms)) {
this.WriteModel(scene, bw, textures);
bw.Flush();
//this.PrintNode(scene, scene.RootNode, 0);
ms.Position = 0;
tw.Write(ms, ms.Length, "model.bin");
}
}
this.WriteTextures(scene, tw, textures);
}
}
}
public static MeshModel Load(Stream stream, string formatHint)
{
using (AssimpContext importer = new AssimpContext())
{
var scene = importer.ImportFileFromStream(
stream,
PostProcessSteps.Triangulate |
// PostProcessSteps.PreTransformVertices |
PostProcessSteps.GenerateUVCoords |
PostProcessSteps.GenerateNormals,
formatHint);
List<Mesh> meshes = new List<Mesh>();
for (int i = 0; i < scene.MeshCount; i++)
{
var mesh = scene.Meshes[i];
var indices = mesh.GetIndices();
int texture = 6;
BlockVertex[] vertices = new BlockVertex[mesh.VertexCount];
var src = mesh.Vertices;
var normals = mesh.HasNormals ? mesh.Normals : null;
var uvs = mesh.HasTextureCoords(0) ? mesh.TextureCoordinateChannels[0] : null;
for (int v = 0; v < vertices.Length; v++)
{
vertices[v].position = src[v].TK();
vertices[v].color = Vector3.One;
if (normals != null)
vertices[v].normal = normals[v].TK();
if (uvs != null)
vertices[v].uv = uvs[v].TK();
else
vertices[v].uv = 0.5f * Vector3.One;
// Set texture ID of the model
vertices[v].uv.Z = texture;
}
meshes.Add(new Mesh(indices, vertices, texture));
}
return new MeshModel(meshes);
}
}
