private static void SaveMesh(StringBuilder writer, STGenericObject mesh, STGenericMaterial mat, int VertexCount)
{
writer.AppendLine($"o {mesh.Text}");
writer.AppendLine($"g {mesh.Text}");
foreach (var v in mesh.vertices)
{
writer.AppendLine($"v {v.pos.X} {v.pos.Y} {v.pos.Z}");
writer.AppendLine($"vn {v.nrm.X} {v.nrm.Y} {v.nrm.Z}");
writer.AppendLine($"vt {v.uv0.X} {v.uv0.Y}");
}
if (mat != null)
{
writer.AppendLine($"usemtl {mat.Text}");
}
for (int i = 0; i < mesh.faces.Count; i++)
{
int[] indices = new int[3]
{
mesh.faces[i++],
mesh.faces[i++],
mesh.faces[i]
};
writer.AppendLine($"f {indices[0] + VertexCount}/{indices[0] + VertexCount}/{indices[0] + VertexCount}" +
$" {indices[1] + VertexCount}/{indices[1] + VertexCount}/{indices[1] + VertexCount}" +
$" {indices[2] + VertexCount}/{indices[2] + VertexCount}/{indices[2] + VertexCount}");
}
VertexCount += mesh.vertices.Count;
}
private List <STGenericObject> CreateGenericObjects(string Name, library_geometries Geometries)
{
List <STGenericObject> objects = new List <STGenericObject>();
foreach (var geom in Geometries.geometry)
{
var daeMesh = geom.Item as mesh;
if (daeMesh == null)
{
continue;
}
STGenericObject mesh = new STGenericObject();
mesh.ObjectName = Name;
foreach (var source in daeMesh.source)
{
var float_array = source.Item as float_array;
if (float_array == null)
{
continue;
}
}
objects.Add(mesh);
}
return(objects);
}
public List<Vertex> GetVertices(Mesh msh, Matrix4 transform, STGenericObject STobj)
{
List<Vertex> vertices = new List<Vertex>();
for (int v = 0; v < msh.VertexCount; v++)
{
Vertex vert = new Vertex();
if (msh.HasVertices)
vert.pos = Vector3.TransformPosition(FromVector(msh.Vertices[v]), transform);
if (msh.HasNormals)
vert.nrm = Vector3.TransformNormal(FromVector(msh.Normals[v]), transform);
if (msh.HasTextureCoords(0))
vert.uv0 = new Vector2(msh.TextureCoordinateChannels[0][v].X, msh.TextureCoordinateChannels[0][v].Y);
if (msh.HasTextureCoords(1))
vert.uv1 = new Vector2(msh.TextureCoordinateChannels[1][v].X, msh.TextureCoordinateChannels[1][v].Y);
if (msh.HasTextureCoords(2))
vert.uv2 = new Vector2(msh.TextureCoordinateChannels[2][v].X, msh.TextureCoordinateChannels[2][v].Y);
if (msh.HasTangentBasis)
vert.tan = new Vector4(msh.Tangents[v].X, msh.Tangents[v].Y, msh.Tangents[v].Z, 1);
if (msh.HasVertexColors(0))
vert.col = new Vector4(msh.VertexColorChannels[0][v].R, msh.VertexColorChannels[0][v].G, msh.VertexColorChannels[0][v].B, msh.VertexColorChannels[0][v].A);
if (msh.HasTangentBasis)
vert.bitan = new Vector4(msh.BiTangents[v].X, msh.BiTangents[v].Y, msh.BiTangents[v].Z, 1);
if (msh.HasBones)
{
foreach (Bone bn in msh.Bones)
{
}
}
vertices.Add(vert);
}
if (msh.HasBones)
{
for (int i = 0; i < msh.BoneCount; i++)
{
Bone bn = msh.Bones[i];
Console.WriteLine($"Bone Info {bn.VertexWeightCount} {bn.Name}");
Vertex.Bone bone = new Vertex.Bone();
bone.Name = bn.Name;
bone.HasWeights = bn.HasVertexWeights;
if (bn.HasVertexWeights)
{
foreach (VertexWeight w in bn.VertexWeights)
{
vertices[w.VertexID].pos = Vector3.TransformPosition(vertices[w.VertexID].pos, FromMatrix( bn.OffsetMatrix));
vertices[w.VertexID].weights.Add(w.Weight);
vertices[w.VertexID].boneNames.Add(bn.Name);
}
}
}
}
return vertices;
}
public static void ExportMesh(string FileName, STGenericObject genericMesh)
{
string fileNoExt = Path.GetFileNameWithoutExtension(FileName);
string fileMtlPath = FileName.Replace("obj", "mtl");
//Write mesh
StringBuilder writer = new StringBuilder();
SaveMesh(writer, genericMesh, null, 0);
File.WriteAllText(FileName, writer.ToString());
}
public STGenericObject CreateGenericObject(Mesh msh, int Index, Matrix4 transform)
{
STGenericObject obj = new STGenericObject();
Console.WriteLine(msh.MaterialIndex);
if (msh.MaterialIndex != -1)
{
obj.MaterialIndex = msh.MaterialIndex;
}
else
{
scene.Materials.Add(new Material()
{
Name = msh.Name
});
}
if (scene.Materials[msh.MaterialIndex].Name == "")
{
scene.Materials[msh.MaterialIndex].Name = msh.Name;
}
obj.HasPos = msh.HasVertices;
obj.HasNrm = msh.HasNormals;
obj.HasUv0 = msh.HasTextureCoords(0);
obj.HasUv1 = msh.HasTextureCoords(1);
obj.HasUv2 = msh.HasTextureCoords(2);
obj.HasIndices = msh.HasBones;
if (msh.HasBones)
{
obj.HasWeights = msh.Bones[0].HasVertexWeights;
}
obj.HasTans = msh.HasTangentBasis;
obj.HasBitans = msh.HasTangentBasis;
obj.HasVertColors = msh.HasVertexColors(0);
obj.ObjectName = msh.Name;
obj.boneList = GetBoneList(msh);
obj.MaxSkinInfluenceCount = GetVertexSkinCount(msh);
GenericObject.LOD_Mesh lod = new GenericObject.LOD_Mesh();
lod.faces = GetFaces(msh);
lod.IndexFormat = STIndexFormat.UInt16;
lod.PrimitiveType = STPolygonType.Triangle;
lod.GenerateSubMesh();
obj.lodMeshes.Add(lod);
obj.vertices = GetVertices(msh, transform, obj);
obj.VertexBufferIndex = Index;
return(obj);
}
public void SaveFromObject(STGenericObject genericObject, string FileName)
{
Scene scene = new Scene();
scene.RootNode = new Node("Root");
var mesh = SaveMesh(genericObject, 0, null, null);
mesh.MaterialIndex = 0;
scene.Meshes.Add(mesh);
Material material = new Material();
material.Name = "NewMaterial";
scene.Materials.Add(material);
SaveScene(FileName, scene, new List <STGenericObject>()
{
genericObject
});
}
public List <Vertex> GetVertices(Mesh msh, Matrix4 transform, STGenericObject STobj)
{
List <Vertex> vertices = new List <Vertex>();
for (int v = 0; v < msh.VertexCount; v++)
{
Vertex vert = new Vertex();
if (msh.HasVertices)
{
vert.pos = Vector3.TransformPosition(AssimpHelper.FromVector(msh.Vertices[v]), transform);
}
if (msh.HasNormals)
{
vert.nrm = Vector3.TransformNormal(AssimpHelper.FromVector(msh.Normals[v]), transform);
}
if (msh.HasTextureCoords(0))
{
vert.uv0 = new Vector2(msh.TextureCoordinateChannels[0][v].X, msh.TextureCoordinateChannels[0][v].Y);
}
if (msh.HasTextureCoords(1))
{
vert.uv1 = new Vector2(msh.TextureCoordinateChannels[1][v].X, msh.TextureCoordinateChannels[1][v].Y);
}
if (msh.HasTextureCoords(2))
{
vert.uv2 = new Vector2(msh.TextureCoordinateChannels[2][v].X, msh.TextureCoordinateChannels[2][v].Y);
}
if (msh.HasTangentBasis)
{
vert.tan = new Vector4(msh.Tangents[v].X, msh.Tangents[v].Y, msh.Tangents[v].Z, 1);
}
if (msh.HasVertexColors(0))
{
vert.col = new Vector4(msh.VertexColorChannels[0][v].R, msh.VertexColorChannels[0][v].G, msh.VertexColorChannels[0][v].B, msh.VertexColorChannels[0][v].A);
}
if (msh.HasTangentBasis)
{
vert.bitan = new Vector4(msh.BiTangents[v].X, msh.BiTangents[v].Y, msh.BiTangents[v].Z, 1);
}
vertices.Add(vert);
}
if (msh.HasBones)
{
for (int i = 0; i < msh.BoneCount; i++)
{
Bone bn = msh.Bones[i];
if (bn.HasVertexWeights)
{
foreach (VertexWeight w in bn.VertexWeights)
{
// vertices[w.VertexID].pos = Vector3.TransformPosition(vertices[w.VertexID].pos, AssimpHelper.TKMatrix(bn.OffsetMatrix));
vertices[w.VertexID].boneWeights.Add(w.Weight);
vertices[w.VertexID].boneNames.Add(bn.Name);
BoneNames.Add(bn.Name);
}
}
}
}
return(vertices);
}
private Mesh SaveMesh(STGenericObject genericObj, int index, STSkeleton skeleton, List <int> NodeArray)
{
//Assimp is weird so use mesh_# for the name. We'll change it back after save
Mesh mesh = new Mesh($"mesh_{ index }", PrimitiveType.Triangle);
mesh.MaterialIndex = genericObj.MaterialIndex;
List <Vector3D> textureCoords0 = new List <Vector3D>();
List <Vector3D> textureCoords1 = new List <Vector3D>();
List <Vector3D> textureCoords2 = new List <Vector3D>();
List <Color4D> vertexColors = new List <Color4D>();
int vertexID = 0;
foreach (Vertex v in genericObj.vertices)
{
mesh.Vertices.Add(new Vector3D(v.pos.X, v.pos.Y, v.pos.Z));
mesh.Normals.Add(new Vector3D(v.nrm.X, v.nrm.Y, v.nrm.Z));
textureCoords0.Add(new Vector3D(v.uv0.X, v.uv0.Y, 0));
textureCoords1.Add(new Vector3D(v.uv1.X, v.uv1.Y, 0));
textureCoords2.Add(new Vector3D(v.uv2.X, v.uv2.Y, 0));
vertexColors.Add(new Color4D(v.col.X, v.col.Y, v.col.Z, v.col.W));
mesh.TextureCoordinateChannels[0] = textureCoords0;
mesh.TextureCoordinateChannels[1] = textureCoords1;
mesh.TextureCoordinateChannels[2] = textureCoords2;
mesh.VertexColorChannels[0] = vertexColors;
if (skeleton != null)
{
for (int j = 0; j < v.boneIds.Count; j++)
{
if (j < genericObj.VertexSkinCount)
{
//Get the bone via the node array and bone index from the vertex
STBone STbone = skeleton.bones[NodeArray[v.boneIds[j]]];
//Find the index of a bone. If it doesn't exist then we add it
int boneInd = mesh.Bones.FindIndex(x => x.Name == STbone.Text);
if (boneInd == -1)
{
var matrices = Switch_Toolbox.Library.IO.MatrixExenstion.CalculateInverseMatrix(STbone);
//Set the inverse matrix
Matrix4x4 transform = matrices.inverse.FromNumerics();
//Create a new assimp bone
Bone bone = new Bone();
bone.Name = STbone.Text;
bone.OffsetMatrix = STbone.invert.ToMatrix4x4();
mesh.Bones.Add(bone);
BoneNames.Add(bone.Name);
boneInd = mesh.Bones.IndexOf(bone); //Set the index of the bone for the vertex weight
}
int MinWeightAmount = 0;
//Check if the max amount of weights is higher than the current bone id
if (v.boneWeights.Count > j && v.boneWeights[j] > MinWeightAmount)
{
if (v.boneWeights[j] <= 1)
{
mesh.Bones[boneInd].VertexWeights.Add(new VertexWeight(vertexID, v.boneWeights[j]));
}
else
{
mesh.Bones[boneInd].VertexWeights.Add(new VertexWeight(vertexID, 1));
}
}
else if (v.boneWeights.Count == 0 || v.boneWeights[j] > MinWeightAmount)
{
mesh.Bones[boneInd].VertexWeights.Add(new VertexWeight(vertexID, 1));
}
}
}
}
vertexID++;
}
List <int> faces = genericObj.lodMeshes[genericObj.DisplayLODIndex].faces;
for (int f = 0; f < faces.Count; f++)
{
mesh.Faces.Add(new Face(new int[] { faces[f++], faces[f++], faces[f] }));
}
mesh.TextureCoordinateChannels.SetValue(textureCoords0, 0);
return(mesh);
}
public List <Vertex> GetVertices(Mesh msh, Matrix4 transform, STGenericObject STobj)
{
Matrix4 NormalsTransform = Matrix4.CreateFromQuaternion(transform.ExtractRotation());
List <Vertex> vertices = new List <Vertex>();
for (int v = 0; v < msh.VertexCount; v++)
{
Vertex vert = new Vertex();
if (msh.HasVertices)
{
vert.pos = Vector3.TransformPosition(AssimpHelper.FromVector(msh.Vertices[v]), transform);
}
if (msh.HasNormals)
{
vert.nrm = Vector3.TransformNormal(AssimpHelper.FromVector(msh.Normals[v]), NormalsTransform);
}
if (msh.HasTextureCoords(0))
{
vert.uv0 = new Vector2(msh.TextureCoordinateChannels[0][v].X, msh.TextureCoordinateChannels[0][v].Y);
}
if (msh.HasTextureCoords(1))
{
vert.uv1 = new Vector2(msh.TextureCoordinateChannels[1][v].X, msh.TextureCoordinateChannels[1][v].Y);
}
if (msh.HasTextureCoords(2))
{
vert.uv2 = new Vector2(msh.TextureCoordinateChannels[2][v].X, msh.TextureCoordinateChannels[2][v].Y);
}
if (msh.HasTangentBasis)
{
vert.tan = new Vector4(msh.Tangents[v].X, msh.Tangents[v].Y, msh.Tangents[v].Z, 1);
}
if (msh.HasVertexColors(0))
{
vert.col = new Vector4(msh.VertexColorChannels[0][v].R, msh.VertexColorChannels[0][v].G, msh.VertexColorChannels[0][v].B, msh.VertexColorChannels[0][v].A);
Console.WriteLine("VTX Col " + vert.col);
}
if (msh.HasTangentBasis)
{
vert.bitan = new Vector4(msh.BiTangents[v].X, msh.BiTangents[v].Y, msh.BiTangents[v].Z, 1);
}
vertices.Add(vert);
}
if (msh.HasBones)
{
STConsole.WriteLine(msh.Name + " HasBones " + msh.HasBones);
STConsole.WriteLine(msh.Name + " BoneCount " + msh.BoneCount);
for (int i = 0; i < msh.BoneCount; i++)
{
Bone bn = msh.Bones[i];
if (bn.HasVertexWeights)
{
foreach (VertexWeight w in bn.VertexWeights)
{
vertices[w.VertexID].boneWeights.Add(w.Weight);
vertices[w.VertexID].boneNames.Add(bn.Name);
BoneNames.Add(bn.Name);
}
}
}
}
return(vertices);
}
