public Assimp.Scene ConvertToScene(Model model, Config config)
{
// Start building scene
var aiScene = AssimpHelper.CreateDefaultScene();
// Convert materials
for (var i = 0; i < model.Materials.Count; i++)
{
var material = model.Materials[i];
var aiMaterial = new Assimp.Material {
Name = FormatMaterialName(material, i)
};
if (material.TextureId != null)
{
aiMaterial.TextureDiffuse = new Assimp.TextureSlot
{
TextureType = Assimp.TextureType.Diffuse,
FilePath = Path.Combine("textures", FormatTextureName(material.TextureId.Value))
};
}
aiScene.Materials.Add(aiMaterial);
}
// Convert nodes
var aiNodeLookup = new Dictionary <Node, Assimp.Node>();
for (var i = 0; i < model.Nodes.Count; i++)
{
var node = model.Nodes[i];
var aiNode = new Assimp.Node(FormatNodeName(node, i), node.Parent != null ? aiNodeLookup[node.Parent] : aiScene.RootNode);
aiNodeLookup[node] = aiNode;
aiNode.Transform = node.Transform.ToAssimp();
if (node.Geometry != null)
{
ConvertMeshList(node.Geometry.Meshes, node, i, model.Nodes, aiScene, aiNode);
if (node.Geometry.TranslucentMeshes != null)
{
ConvertMeshList(node.Geometry.TranslucentMeshes, node, i, model.Nodes, aiScene, aiNode);
}
}
aiNode.Parent.Children.Add(aiNode);
}
return(aiScene);
}
public void ExportCollada(string filepath)
{
var aiScene = AssimpHelper.CreateDefaultScene();
foreach (var geometry in Geometries)
{
for (var meshIndex = 0; meshIndex < geometry.Meshes.Count; meshIndex++)
{
var aiMeshNode = new Assimp.Node(geometry.Meshes.Count > 1 ? $"{geometry.Name}_mesh_{meshIndex}" : geometry.Name,
aiScene.RootNode);
aiScene.RootNode.Children.Add(aiMeshNode);
var mesh = geometry.Meshes[meshIndex];
var aiMesh = new Assimp.Mesh();
var aiMaterial = new Assimp.Material
{
Name = mesh.Material.Name,
//ColorDiffuse = AssimpHelper.ToAssimp( mesh.Material.Diffuse ),
//ColorSpecular = AssimpHelper.ToAssimp( mesh.Material.Specular ),
//ColorAmbient = AssimpHelper.ToAssimp( mesh.Material.Ambient ),
Shininess = 0,
ShininessStrength = 0,
Reflectivity = 0,
TextureDiffuse = new Assimp.TextureSlot
{
TextureType = Assimp.TextureType.Diffuse,
FilePath = mesh.Material.TextureName,
WrapModeU = Assimp.TextureWrapMode.Wrap,
WrapModeV = Assimp.TextureWrapMode.Wrap,
}
};
aiMesh.MaterialIndex = aiScene.MaterialCount;
aiScene.Materials.Add(aiMaterial);
foreach (var vertex in mesh.Vertices)
{
aiMesh.Vertices.Add(AssimpHelper.ToAssimp(vertex.Position));
aiMesh.Normals.Add(AssimpHelper.ToAssimp(vertex.Normal));
aiMesh.VertexColorChannels[0].Add(AssimpHelper.ToAssimp(vertex.Color));
aiMesh.TextureCoordinateChannels[0].Add(AssimpHelper.ToAssimp(vertex.UV));
}
for (int i = 0; i < mesh.Indices.Length; i += 3)
{
var aiFace = new Assimp.Face();
for (int j = 0; j < 3; j++)
{
aiFace.Indices.Add(mesh.Indices[i + j]);
}
aiMesh.Faces.Add(aiFace);
}
aiMeshNode.MeshIndices.Add(aiScene.MeshCount);
aiScene.Meshes.Add(aiMesh);
}
}
AssimpHelper.ExportCollada(aiScene, filepath);
}
