public static OptFile An8ToOpt(string an8Path, bool scale)
{
string an8Directory = Path.GetDirectoryName(an8Path);
var an8 = An8File.FromFile(an8Path);
var opt = new OptFile();
foreach (var mesh in an8.Objects
.SelectMany(t => t.Components)
.SelectMany(t => Converter.EnumMeshes(t)))
{
var optMesh = new Mesh();
opt.Meshes.Add(optMesh);
if (scale)
{
foreach (var v in mesh.Points)
{
optMesh.Vertices.Add(new Vector(v.X / OptFile.ScaleFactor, v.Z / OptFile.ScaleFactor, v.Y / OptFile.ScaleFactor));
}
}
else
{
foreach (var v in mesh.Points)
{
optMesh.Vertices.Add(new Vector(v.X, v.Z, v.Y));
}
}
foreach (var v in mesh.TexCoords)
{
optMesh.TextureCoordinates.Add(new TextureCoordinates(v.U, -v.V));
}
foreach (var v in mesh.Normals)
{
optMesh.VertexNormals.Add(new Vector(v.X, v.Z, v.Y));
}
optMesh.TextureCoordinates.Add(new TextureCoordinates(0, 0));
optMesh.TextureCoordinates.Add(new TextureCoordinates(1, 0));
optMesh.TextureCoordinates.Add(new TextureCoordinates(1, 1));
optMesh.TextureCoordinates.Add(new TextureCoordinates(0, 1));
var optLod = new MeshLod();
optMesh.Lods.Add(optLod);
foreach (var face in mesh.Faces)
{
if (face.PointIndexes.Length < 3)
{
continue;
}
bool isQuad = face.PointIndexes.Length > 3;
var optFaceGroup = new FaceGroup();
optLod.FaceGroups.Add(optFaceGroup);
var materialName = mesh.MaterialList.ElementAtOrDefault(face.MaterialIndex);
if (!string.IsNullOrEmpty(materialName))
{
optFaceGroup.Textures.Add(materialName);
}
Index verticesIndex = new Index(
face.PointIndexes[0],
face.PointIndexes[1],
face.PointIndexes[2],
isQuad ? face.PointIndexes[3] : -1);
if (verticesIndex.A >= optMesh.Vertices.Count)
{
verticesIndex.A = 0;
}
if (verticesIndex.B >= optMesh.Vertices.Count)
{
verticesIndex.B = 0;
}
if (verticesIndex.C >= optMesh.Vertices.Count)
{
verticesIndex.C = 0;
}
if (verticesIndex.D >= optMesh.Vertices.Count)
{
verticesIndex.D = 0;
}
Index textureCoordinatesIndex = new Index(
face.TexCoordIndexes[0],
face.TexCoordIndexes[1],
face.TexCoordIndexes[2],
isQuad ? face.TexCoordIndexes[3] : -1);
if (textureCoordinatesIndex.A >= optMesh.TextureCoordinates.Count)
{
textureCoordinatesIndex.A = 0;
}
if (textureCoordinatesIndex.B >= optMesh.TextureCoordinates.Count)
{
textureCoordinatesIndex.B = 0;
}
if (textureCoordinatesIndex.C >= optMesh.TextureCoordinates.Count)
{
textureCoordinatesIndex.C = 0;
}
if (textureCoordinatesIndex.D >= optMesh.TextureCoordinates.Count)
{
textureCoordinatesIndex.D = 0;
}
Index vertexNormalsIndex = new Index(
face.NormalIndexes[0],
face.NormalIndexes[1],
face.NormalIndexes[2],
isQuad ? face.NormalIndexes[3] : -1);
if (vertexNormalsIndex.A >= optMesh.VertexNormals.Count)
{
vertexNormalsIndex.A = 0;
}
if (vertexNormalsIndex.B >= optMesh.VertexNormals.Count)
{
vertexNormalsIndex.B = 0;
}
if (vertexNormalsIndex.C >= optMesh.VertexNormals.Count)
{
vertexNormalsIndex.C = 0;
}
if (vertexNormalsIndex.D >= optMesh.VertexNormals.Count)
{
vertexNormalsIndex.D = 0;
}
if (textureCoordinatesIndex.A < 0 || textureCoordinatesIndex.B < 0 || textureCoordinatesIndex.C < 0 || (verticesIndex.D >= 0 && textureCoordinatesIndex.D < 0))
{
textureCoordinatesIndex.A = optMesh.TextureCoordinates.Count - 4;
textureCoordinatesIndex.B = optMesh.TextureCoordinates.Count - 3;
textureCoordinatesIndex.C = optMesh.TextureCoordinates.Count - 2;
textureCoordinatesIndex.D = verticesIndex.D < 0 ? -1 : optMesh.TextureCoordinates.Count - 1;
}
Vector normal = Vector.Normal(
optMesh.Vertices.ElementAtOrDefault(verticesIndex.A),
optMesh.Vertices.ElementAtOrDefault(verticesIndex.B),
optMesh.Vertices.ElementAtOrDefault(verticesIndex.C));
if (vertexNormalsIndex.A < 0 || vertexNormalsIndex.B < 0 || vertexNormalsIndex.C < 0 || (verticesIndex.D >= 0 && vertexNormalsIndex.D < 0))
{
optMesh.VertexNormals.Add(normal);
vertexNormalsIndex.A = optMesh.VertexNormals.Count - 1;
vertexNormalsIndex.B = optMesh.VertexNormals.Count - 1;
vertexNormalsIndex.C = optMesh.VertexNormals.Count - 1;
vertexNormalsIndex.D = verticesIndex.D < 0 ? -1 : optMesh.VertexNormals.Count - 1;
}
var optFace = new Face()
{
VerticesIndex = verticesIndex,
TextureCoordinatesIndex = textureCoordinatesIndex,
VertexNormalsIndex = vertexNormalsIndex,
Normal = normal
};
optFaceGroup.Faces.Add(optFace);
}
}
opt.CompactBuffers();
opt.ComputeHitzones();
foreach (var material in an8.Materials
.Concat(an8.Objects.SelectMany(t => t.Materials))
.Where(t => t.FrontSurface != null)
.Select(t => new
{
Name = t.Name,
Diffuse = t.FrontSurface.Diffuse,
Alpha = t.FrontSurface.Alpha
}))
{
Texture texture;
var an8Texture = material.Diffuse.TextureName != null ?
an8.Textures.FirstOrDefault(t => string.Equals(t.Name, material.Diffuse.TextureName, StringComparison.Ordinal)) :
null;
if (an8Texture == null)
{
byte r = material.Diffuse.Red;
byte g = material.Diffuse.Green;
byte b = material.Diffuse.Blue;
int width = 8;
int height = 8;
int length = width * height;
byte[] data = new byte[length * 4];
for (int i = 0; i < length; i++)
{
data[i * 4 + 0] = b;
data[i * 4 + 1] = g;
data[i * 4 + 2] = r;
data[i * 4 + 3] = 255;
}
texture = new Texture();
texture.Name = material.Name;
texture.Width = width;
texture.Height = height;
texture.ImageData = data;
}
else
{
string colorFileName = Path.Combine(an8Directory, Path.GetFileName(an8Texture.Files[0]));
texture = Texture.FromFile(colorFileName);
texture.Name = material.Name;
}
if (material.Alpha > 0 && material.Alpha < 255)
{
byte alpha = (byte)material.Alpha;
int length = texture.Width * texture.Height;
byte[] alphaData = new byte[length];
var data = texture.ImageData;
for (int i = 0; i < length; i++)
{
alphaData[i] = alpha;
data[i * 4 + 3] = alpha;
}
texture.AlphaData = alphaData;
}
opt.Textures.Add(texture.Name, texture);
}
opt.GenerateTexturesMipmaps();
return opt;
}
public static OptFile RhinoToOpt(string rhinoPath, bool scale)
{
string rhinoDirectory = Path.GetDirectoryName(rhinoPath);
var opt = new OptFile();
using (var file = Rhino.FileIO.File3dm.Read(rhinoPath))
{
float scaleFactor = scale ? (1.0f / OptFile.ScaleFactor) : 1.0f;
if (file.Settings.ModelUnitSystem != Rhino.UnitSystem.Meters)
{
scaleFactor *= (float)Rhino.RhinoMath.UnitScale(file.Settings.ModelUnitSystem, Rhino.UnitSystem.Meters);
scale = true;
}
var groups = file.Objects
.Where(t =>
{
using (var geometry = t.Geometry)
{
return geometry.ObjectType == Rhino.DocObjects.ObjectType.Mesh;
}
})
.GroupBy(t =>
{
using (var attributes = t.Attributes)
{
return attributes.LayerIndex;
}
})
.ToList();
foreach (var group in groups)
{
var mesh = new Mesh();
opt.Meshes.Add(mesh);
var lod = new MeshLod();
mesh.Lods.Add(lod);
foreach (var obj in group)
{
var faceGroup = new FaceGroup();
lod.FaceGroups.Add(faceGroup);
int baseIndex = mesh.Vertices.Count;
using (var geometry = (Rhino.Geometry.Mesh)obj.Geometry)
{
if (scale)
{
foreach (var vertex in geometry.Vertices)
{
mesh.Vertices.Add(new Vector(vertex.X * scaleFactor, vertex.Y * scaleFactor, vertex.Z * scaleFactor));
}
}
else
{
foreach (var vertex in geometry.Vertices)
{
mesh.Vertices.Add(new Vector(vertex.X, vertex.Y, vertex.Z));
}
}
foreach (var texCoords in geometry.TextureCoordinates)
{
mesh.TextureCoordinates.Add(new TextureCoordinates(texCoords.X, -texCoords.Y));
}
foreach (var normal in geometry.Normals)
{
mesh.VertexNormals.Add(new Vector(normal.X, normal.Y, normal.Z));
}
foreach (var geoFace in geometry.Faces)
{
var face = new Face();
faceGroup.Faces.Add(face);
Index index = geoFace.IsTriangle ?
new Index(baseIndex + geoFace.C, baseIndex + geoFace.B, baseIndex + geoFace.A) :
new Index(baseIndex + geoFace.D, baseIndex + geoFace.C, baseIndex + geoFace.B, baseIndex + geoFace.A);
face.VerticesIndex = index;
face.VertexNormalsIndex = index;
face.TextureCoordinatesIndex = index;
face.Normal = Vector.Normal(mesh.Vertices[index.A], mesh.Vertices[index.B], mesh.Vertices[index.C]);
}
}
using (var attributes = obj.Attributes)
{
if (attributes.MaterialIndex != -1)
{
using (var material = file.Materials[attributes.MaterialIndex])
{
faceGroup.Textures.Add(material.Name);
}
}
}
}
}
opt.CompactBuffers();
opt.ComputeHitzones();
for (int materialIndex = 0; materialIndex < file.Materials.Count; materialIndex++)
{
using (var material = file.Materials[materialIndex])
{
if (opt.Textures.ContainsKey(material.Name))
{
continue;
}
string colorMap = null;
string alphaMap = null;
using (var tex = material.GetBitmapTexture())
{
if (tex != null && !string.IsNullOrEmpty(tex.FileName))
{
colorMap = Path.GetFileName(tex.FileName);
}
}
using (var tex = material.GetTransparencyTexture())
{
if (tex != null && !string.IsNullOrEmpty(tex.FileName))
{
alphaMap = Path.GetFileName(tex.FileName);
}
}
Texture texture;
if (colorMap == null)
{
var color = material.DiffuseColor;
byte r = color.R;
byte g = color.G;
byte b = color.B;
int width = 8;
int height = 8;
int length = width * height;
byte[] data = new byte[length * 4];
for (int i = 0; i < length; i++)
{
data[i * 4 + 0] = b;
data[i * 4 + 1] = g;
data[i * 4 + 2] = r;
data[i * 4 + 3] = 255;
}
texture = new Texture();
texture.Name = material.Name;
texture.Width = width;
texture.Height = height;
texture.ImageData = data;
}
else
{
string colorFileName = Path.Combine(rhinoDirectory, colorMap);
texture = Texture.FromFile(colorFileName);
texture.Name = material.Name;
}
if (alphaMap != null)
{
string alphaFileName = Path.Combine(rhinoDirectory, alphaMap);
texture.SetAlphaMap(alphaFileName);
}
else if (material.Transparency > 0.0 && material.Transparency < 1.0)
{
byte alpha = (byte)(material.Transparency * 255.0f);
int length = texture.Width * texture.Height;
byte[] alphaData = new byte[length];
var data = texture.ImageData;
for (int i = 0; i < length; i++)
{
alphaData[i] = alpha;
data[i * 4 + 3] = alpha;
}
texture.AlphaData = alphaData;
}
opt.Textures.Add(texture.Name, texture);
}
}
opt.GenerateTexturesMipmaps();
}
return opt;
}