public static Polyline[] ExportRhinoPolylines(ITurtleMesh ngons)
{
var polylines = new Polyline[ngons.FaceCount];
for (int i = 0; i < ngons.FaceCount; i++)
{
var f = ngons.FaceAt(i);
Polyline p = new Polyline(f.EdgesVerticesCount + 1);
for (int j = 0; j < f.EdgesVerticesCount; j++)
{
var v = ngons.VertexAt(f[j]);
p.Add(v.X, v.Y, v.Z);
}
var closure = ngons.VertexAt(f[0]);
p.Add(closure.X, closure.Y, closure.Z);
polylines[i] = p;
}
return(polylines);
}
public static Polyline[] ExportRhinoPolylines(ITurtleMesh ngons)
{
var polylines = new Polyline[ngons.FaceCount];
for (int i = 0; i < ngons.FaceCount; i++)
{
var f = ngons.FaceAt(i);
Polyline p = new Polyline(f.EdgesVerticesCount + 1);
for (int j = 0; j < f.EdgesVerticesCount; j++)
{
var v = ngons.VertexAt(f[j]);
p.Add(v.X, v.Y, v.Z);
}
var closure = ngons.VertexAt(f[0]);
p.Add(closure.X, closure.Y, closure.Z);
polylines[i] = p;
}
return polylines;
}
public TurtleMesh(ITurtleMesh other)
{
if (other == null) throw new ArgumentNullException("other");
for (int i = 0; i < other.VertexCount; i++)
{
AddVertex(new TurtleVertex(other.VertexAt(i)));
}
for (int i = 0; i < other.FaceCount; i++)
{
AddFace(new TurtleFace(other.FaceAt(i)));
}
}
public TurtleMesh(ITurtleMesh other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
for (int i = 0; i < other.VertexCount; i++)
{
AddVertex(new TurtleVertex(other.VertexAt(i)));
}
for (int i = 0; i < other.FaceCount; i++)
{
AddFace(new TurtleFace(other.FaceAt(i)));
}
}
public static TurtleMesh ExportFaceAt(ITurtleMesh m, int index)
{
var nm = new TurtleMesh();
var f = m.FaceAt(index);
var nf = new TurtleFace(f.EdgesVerticesCount);
for (int i = 0; i < f.EdgesVerticesCount; i++)
{
nm.AddVertex(new TurtleVertex(m.VertexAt(f[i])));
nf.Add(i);
}
nm.AddFace(nf);
return(nm);
}
public static TurtleMesh ExportFaceAt(ITurtleMesh m, int index)
{
var nm = new TurtleMesh();
var f = m.FaceAt(index);
var nf = new TurtleFace(f.EdgesVerticesCount);
for (int i = 0; i < f.EdgesVerticesCount; i++)
{
nm.AddVertex(new TurtleVertex(m.VertexAt(f[i])));
nf.Add(i);
}
nm.AddFace(nf);
return nm;
}
public static ITurtleVertex ComputeFaceVertexAvarage(ITurtleMesh t, int faceIndex)
{
var f = t.FaceAt(faceIndex);
double x = 0, y = 0, z = 0;
for (int i = 0; i < f.EdgesVerticesCount; i++)
{
var v = t.VertexAt(f[i]);
x += v.X;
y += v.Y;
z += v.Z;
}
double inv = 1.0 / f.EdgesVerticesCount;
return(new TurtleVertex(
(float)(x * inv), (float)(y * inv), (float)(z * inv)));
}
public static Mesh ExportTriangolatedRhinoMesh(ITurtleMesh ngons)
{
Mesh mesh = new Mesh();
var vs = mesh.Vertices;
for (int i = 0; i < ngons.VertexCount; i++)
{
var v = ngons.VertexAt(i);
vs.Add(v.X, v.Y, v.Z);
}
var fs = mesh.Faces;
for (int i = 0; i < ngons.FaceCount; i++)
{
var f = ngons.FaceAt(i);
switch (f.EdgesVerticesCount)
{
case 3:
fs.AddFace(f[0], f[1], f[2]);
break;
case 4:
fs.AddFace(f[0], f[1], f[2], f[3]);
break;
default:
if (f.EdgesVerticesCount > 2)
{
var av = SpacialAnalysis.ComputeFaceVertexAvarage(ngons, i);
int newIndex = vs.Count;
vs.Add(av.X, av.Y, av.Z);
for (int j = 0; j < f.EdgesVerticesCount; j++)
{
fs.AddFace(f[j], f[(j + 1) % f.EdgesVerticesCount], newIndex);
}
}
break;
}
}
return(mesh);
}
public void AppendOther(ITurtleMesh other)
{
int s = _vertices.Count;
for (int i = 0; i < other.VertexCount; i++)
{
_vertices.Add(new TurtleVertex(other.VertexAt(i)));
}
for (int i = 0; i < other.FaceCount; i++)
{
var of = other.FaceAt(i);
var nf = new TurtleFace(of.EdgesVerticesCount);
for (int j = 0; j < of.EdgesVerticesCount; j++)
{
nf.Add(of[j] + s);
}
_faces.Add(nf);
}
}
public static Mesh ExportTriangolatedRhinoMesh(ITurtleMesh ngons)
{
Mesh mesh = new Mesh();
var vs = mesh.Vertices;
for (int i = 0; i < ngons.VertexCount; i++)
{
var v = ngons.VertexAt(i);
vs.Add(v.X, v.Y, v.Z);
}
var fs = mesh.Faces;
for (int i = 0; i < ngons.FaceCount; i++)
{
var f = ngons.FaceAt(i);
switch (f.EdgesVerticesCount)
{
case 3:
fs.AddFace(f[0], f[1], f[2]);
break;
case 4:
fs.AddFace(f[0], f[1], f[2], f[3]);
break;
default:
if(f.EdgesVerticesCount > 2)
{
var av = SpacialAnalysis.ComputeFaceVertexAvarage(ngons, i);
int newIndex = vs.Count;
vs.Add(av.X, av.Y, av.Z);
for (int j = 0; j < f.EdgesVerticesCount; j++)
{
fs.AddFace(f[j], f[(j + 1) % f.EdgesVerticesCount], newIndex);
}
}
break;
}
}
return mesh;
}
public static void ComputeBoundingBox(ITurtleMesh m, out ITurtleVertex min, out ITurtleVertex max)
{
var minV = new TurtleVertex(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
var maxV = new TurtleVertex(float.NegativeInfinity, float.NegativeInfinity, float.NegativeInfinity);
for (int i = 0; i < m.VertexCount; i++)
{
var v = m.VertexAt(i);
if (minV.X > v.X)
{
minV.X = v.X;
}
if (minV.Y > v.Y)
{
minV.Y = v.Y;
}
if (minV.Z > v.Z)
{
minV.Z = v.Z;
}
if (maxV.X < v.X)
{
maxV.X = v.X;
}
if (maxV.Y < v.Y)
{
maxV.Y = v.Y;
}
if (maxV.Z < v.Z)
{
maxV.Z = v.Z;
}
}
min = minV;
max = maxV;
}
public static void Write(ITurtleMesh mesh, TextWriter sw)
{
sw.WriteLine("# OBJ file written by TurtleMesh");
var ci = System.Globalization.CultureInfo.InvariantCulture;
sw.WriteLine("# " + mesh.VertexCount.ToString(ci) + " vertices");
for (int i = 0; i < mesh.VertexCount; i++)
{
var v = mesh.VertexAt(i);
sw.Write("v ");
sw.Write(v.X.ToString("r", ci));
sw.Write(" ");
sw.Write(v.Y.ToString("r", ci));
sw.Write(" ");
sw.WriteLine(v.Z.ToString("r", ci));
}
sw.WriteLine("# " + mesh.FaceCount.ToString(ci) + " faces");
for (int i = 0; i < mesh.FaceCount; i++)
{
var f = mesh.FaceAt(i);
sw.Write("f");
for (int j = 0; j < f.EdgesVerticesCount; j++)
{
sw.Write(" ");
sw.Write((f[j] + 1).ToString(ci));
}
sw.WriteLine();
}
sw.WriteLine("# end of OBJ file");
sw.Flush();
sw.Close();
}
public void AppendOther(ITurtleMesh other)
{
int s = _vertices.Count;
for (int i = 0; i < other.VertexCount; i++)
_vertices.Add(new TurtleVertex(other.VertexAt(i)));
for (int i = 0; i < other.FaceCount; i++)
{
var of = other.FaceAt(i);
var nf = new TurtleFace(of.EdgesVerticesCount);
for(int j=0; j<of.EdgesVerticesCount; j++)
{
nf.Add(of[j] + s);
}
_faces.Add(nf);
}
}
public static void Write(ITurtleMesh mesh, TextWriter sw)
{
sw.WriteLine("# OBJ file written by TurtleMesh");
var ci = System.Globalization.CultureInfo.InvariantCulture;
sw.WriteLine("# " + mesh.VertexCount.ToString(ci) + " vertices");
for (int i = 0; i < mesh.VertexCount; i++)
{
var v = mesh.VertexAt(i);
sw.Write("v ");
sw.Write(v.X.ToString("r", ci));
sw.Write(" ");
sw.Write(v.Y.ToString("r", ci));
sw.Write(" ");
sw.WriteLine(v.Z.ToString("r", ci));
}
sw.WriteLine("# " + mesh.FaceCount.ToString(ci) + " faces");
for (int i = 0; i < mesh.FaceCount; i++)
{
var f = mesh.FaceAt(i);
sw.Write("f");
for (int j = 0; j < f.EdgesVerticesCount; j++)
{
sw.Write(" ");
sw.Write((f[j] + 1).ToString(ci));
}
sw.WriteLine();
}
sw.WriteLine("# end of OBJ file");
sw.Flush();
sw.Close();
}