public Model(MeshVertex[] vertices, uint[] indices = null, MeshMaterial material = default, Matrix4 state = default, string name = "", RenderFlags renderFlags = RenderFlags.Solid)
{
Meshes.Add(new Mesh(name, vertices, indices ?? new uint[0], new MeshTexture[0], material)); // TODO: perhaps replace empty array with nulls?
State = state == default ? Matrix4.Identity : state;
RenderFlags = renderFlags;
}
public Mesh(string name, MeshVertex[] vertices, uint[] indices, MeshTexture[] textures, MeshMaterial material)
{
Name = name;
Vertices = vertices;
Indices = indices;
Textures = textures;
Material = material;
// setup can be done only on the main thread, holding the GL context
if (Thread.CurrentThread == MainWindow.MainThread)
{
SetupMesh();
}
else
{
// send necessary actions to dispatcher
Dispatcher.RenderActions.Enqueue(() =>
{
SetupMesh();
});
}
}
private Mesh ProcessMesh(Assimp.Mesh mesh, Scene scene)
{
var vertices = new List <MeshVertex>();
var indices = new List <uint>();
var textures = new List <MeshTexture>();
var color = new MeshMaterial();
for (int i = 0; i < mesh.VertexCount; i++)
{
var vertex = new MeshVertex();
// process vertex positions, normals and texture coordinates
var pos = mesh.Vertices[i];
vertex.Position = new Vector3(pos.X, pos.Y, pos.Z);
var norm = mesh.Normals[i];
vertex.Normal = new Vector3(norm.X, norm.Y, norm.Z);
if (mesh.HasTextureCoords(0)) // does the mesh contain texture coordinates?
{
var tex = mesh.TextureCoordinateChannels[0][i];
vertex.TexCoords = new Vector2(tex.X, tex.Y);
}
vertices.Add(vertex);
}
// process indices
for (int i = 0; i < mesh.FaceCount; i++)
{
Face face = mesh.Faces[i];
for (int j = 0; j < face.IndexCount; j++)
{
indices.Add((uint)face.Indices[j]);
}
}
// process material
if (mesh.MaterialIndex >= 0)
{
Material material = scene.Materials[mesh.MaterialIndex];
// get all the needed material textures
if (material.HasTextureDiffuse)
{
List <MeshTexture> diffuseMaps = LoadMaterialTextures(material, TextureType.Diffuse, "texture_diffuse");
textures.AddRange(diffuseMaps);
}
if (material.HasTextureSpecular)
{
List <MeshTexture> specularMaps = LoadMaterialTextures(material, TextureType.Specular, "texture_specular");
textures.AddRange(specularMaps);
}
// get all the needed material colors (default values if they're not presented)
color.Ambient = new Vector4(
material.ColorAmbient.R,
material.ColorAmbient.G,
material.ColorAmbient.B,
material.ColorAmbient.A);
color.Diffuse = new Vector4(
material.ColorDiffuse.R,
material.ColorDiffuse.G,
material.ColorDiffuse.B,
material.ColorDiffuse.A);
color.Specular = new Vector4(
material.ColorSpecular.R,
material.ColorSpecular.G,
material.ColorSpecular.B,
material.ColorSpecular.A);
color.Shininess = material.Shininess;
}
return(new Mesh(mesh.Name, vertices.ToArray(), indices.ToArray(), textures.ToArray(), color));
}
